Unusual Applications Research Articles

II. Japan: Unusual applications

For pt.I see ibid., vol.16, no.10, p.71-4 (1979). This part continues the review of fibre optics applications which include power monitoring, video transmission, and data links with some unusual applications from Japan.

Development of a Documentation System for a Drug with Unusual and Ubiquitous Clinical Applications: Parlodel®

Development of a Documentation System for a Drug with Unusual and Ubiquitous Clinical Applications: Parlodel^®

An overview and literature survey of mechanical signature analysis

Operational characteristics of dynamic systems and how they have been applied to determine condition and predict failure or malfunction will be described. A literature review of applications and some of the techniques that have been used will be presented. Emphasis will be placed on unusual applications of machinery condition monitoring and failure prediction that have been well documented in the literature. Standards and criteria are mentioned and sources of noise and vibration in machinery such as bearings, and gears will be described. A discussion of known payoffs in mechanical signature analysis will be included as well.

Analytical and experimental investigation of the free vibrations of clamped plates of regular polygonal shape carrying concentrated masses

Traditionally it has been possible to approximate most printed circuit boards as flat rectangular plates with appropriate edge conditions. However, growing use of electronics in unusual new applications is bringing new challenges to packaging design. Since electronic equipment is being packed into every available inch of space in most airplanes, missiles, and even television sets, the shape of the circuit board is often dictated by the geometry of the available space. On the other hand, a proper and rational design requires knowledge of natural frequencies and mode shapes. This paper presents a comparison of frequency results obtained by means of analytical, numerical and experimental methods in the case of the fundamental mode of transverse vibration of a clamped, regular polygonal plate carrying concentrated masses. It is shown that it is also possible to obtain an approximate value of the frequency corresponding to a higher mode by using an analytical approach (with no concentrated mass acting on the plate).

Detecting Photoelectron Images with Semiconductor Arrays for Multichannel Photon Counting

The number and variety of digicon-type devices has been increasing at a rapid rate in the last year. This paper describes most of those which are new either in type of array used, design of electron optics, photocathodes, faceplates, or unusual applications. New parallel output digicons have been built using large two-dimensional arrays for UV and visible photometry. and spectrophotometry. An intensified charge coupled device with 10,000 channels will be described and test results given. Single photoelectron pulse height distributions for CCDs used in the electron bombardment mode will be shown and the first data on the use of avalanche diodes to detect photoelectrons will be given.

Hose Design for Unusual Hose Applications

Hose Design for Unusual Hose Applications

A New Center-Tapped Medium-Power Microfilm Resistor

A new center-tapped microresistor with high power density capability, good stability, and a high degree of inherent reliability is described. The resistor consists of a 0.075 in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> chip 0.022 in thick with two equal-value sputtered tantalum nitride photoetched resistors. Gold-plated copper leads are thermal pulse bonded to evaporated chrome/gold bonding pads. The resistive film is protected with an epoxy coating. Performance data include 10 000 h life at 70°C with 0.2 and 0.4-W dissipation with resistance changes generally under 1 percent. This is equivalent to 70 W/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> of substrate area and up to 1300 W/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> of resistive area. Also included are 10 000 h of 150°C thermal aging, temperature cycle, moisture performance and short time overload, and hot-spot temperature rise versus power dissipated. With heat sinking, short time overload of up to 3 W was successfully applied. Tolerance as manufactured is ±5 percent and stability is generally equivalent to M I L 10509 characteristic C. The product design, manufacturing process, fabrication equipment, and process controls are described. Included are a continuous sputtering machine, an autobonder, an autotester, and a "binstock" qualification procedure. Two unusual applications are described. In one, pairs of center-tapped resistors are used as stripline attenuators or as stripline terminations. They are useful at frequencies up to approximately 2 GHz, In the second application, they are used in an ultrahigh-speed computer. All signal conductors are treated as transmission lines and terminated with the microresistor. The computer size is such that just under 500 000 resistors are required. Operation of this computer leads to interesting conclusions regarding field failure rate and require- ments.

Assessment centres

In my first article for this journal I outlined what an assessment centre is, its history and how the method works. I shall not attempt to argue here the validity of the method nor to provide case studies of actual applications. Future articles will consider the relationship of assessment centres to psychological testing, validity and accuracy, and some case studies of unusual or unique applications.

Some Unusual Applications of Lie Algebra Representations in Quantum Theory

Several new applications of Lie algebra representations in quantum theory are discussed. These include a method of self adjoint extension of the Dirac Hamiltonian, description of continuous spectra, dynamical groups and infinite-component wave equations, induced and indecomposable representations and infinite parameter Lie algebras.

An Application of Kalman Techniques to Aircraft and Missile Radar Tracking

A real-time and postflight data reduction and error analysis program is developed with the ability to estimate either aircraft flight paths or missile trajectories with the same state vector and matrix dimension filter equations simply by input selection of the appropriate state transition matrix. A feature of the filter formulation is an analytical technique for computing the effects of measurement error parameters not explicitly included in the filter state vector on both the state vector estimate itself and the state covariance matrix. Examples of the processing of real tracking data for aircraft flight paths, missile trajectories, and some other more unusual applications are presented which illustrate both the data reduction and error analysis modes of program operation.

Scientific Foundation of Obstetrics and Gynecology.

Do you owe a Christmas gift to your wife's OB-GYN man? Give him this handsome volume, which, opened on his library table at page 240, plates 2 and 3, will add a dash of color, encourage comment, and reduce at least some of his guests to nonconversing, compulsive readers. For between these covers is very rich fare indeed. God knows the American OB-GYN man needs intellectual stimulation, and<i>refreshing</i>intellectual stimulation, and it's here (proof: about 60 of the 80 contributors are from the United Kingdom). The book is catholic and comprehensive: it starts with a model introduction to DNA, and all that, by a Belgian (P. Malpoix-Higgins), and ends with an interesting discussion on the topic of radioactive isotopes by a Japanese (H. Fujimori), who describes some unusual clinical applications. As with any compendious volume of multiple authorship there are marked differences among the chapters. Some are virtual monographs,

Unusual applications of hypnosis in anesthesiology.

Abstract While dramatic achievements with the use of hypnosis are well documented in medical literature, the less spectacular applications of hypnosis in the daily practice of anesthesiology are too often overlooked. They are nevertheless of utmost importance, as they contribute to the care, comfort, well-being, and, in many instances, the recovery of the patient. 6 cases are described which illustrate the successful application and use of hypnosis in treating malignant anxiety, preparing “patient substitution” for surgery, maintaining a nasogastric tube, treating narcotic addiction and adding in surgical diagnosis, caring for a patient with intense claustrophobia, and anesthetizing a former narcotic addict for surgery.

Optics and Instrumentation in Forensic Science

The great variety of materials examined in a forensic science laboratory requires the use of many techniques and instruments. Most of these involve optical components, and a brief description of some applications of some of these is outlined. The two most commonly used instruments are the microscope and the camera; some unusual applications of the latter are described. The paper also presents some applications of spectrophotometers, x-ray diffraction equipment, neutron activation analysis, and gas chromatography.

Control of fabry-perot interferometers and some unusual applications

A brief account is given of some of the work carried out in the C.S.I.R.O. Division of Physics, Australia, on the manufacture, control and application of Fabry-Perot interferometers. This work has resulted in the construction of very narrow band filters having spectral resolving powers of about 10 5 with a spatial resolution of about 0.125m over afield of 9m diameter.

Unusual Applications of Infrared Nondestructive Testing

Unusual Applications of Infrared Nondestructive Testing

Spark Erosion of Diamond

A spark erosion method of shaping diamond is described. The problem of the diamond being non-conductive is overcome by the formation of a thin carbon layer on the diamond surface. This layer is continuously reformed as the erosion proceeded. The apparatus and methods discussed are of an elementary nature. They demonstrate that the technique is workable and can also be adapted to many unusual applications. The cutting rate was independent of orientation and imperfections in the diamond crystal. Furthermore, no diamond dust was needed to assist abrasion.

Applications for Inertial Sensors in Space

Inertial sensors have application to all phases of spaceflight ranging from launch vehicles to lunar and planetary spacecraft. New classes of sensors such as the true free rotor gyro make new concepts in celestial-inertial instruments possible. Some unusual potential space applications and experiments, as exemplified by the proposal to verify the theory of General Relativity by a gyro in low earth orbit pose unusual inertial sensor requirements.

The chemistry of biological sulfonium compounds.

Sulfonium compounds have been known to the organic chemist for almost 90 years. During most of this period they remained curiosities, well suited for didactic purposes to illustrate certain similarities to ether adducts and to organic ammonium compounds. Their exploration remained largely in the academic realm, because no unusual practical applications were found in spite of a steady increase in the attention paid to them. An event that occasionally puts a class of compounds into the center of interest is the recognition of its occurrence in nature and of special biological significance. The first natural sulfonium compound was discovered less than 20 years ago, somewhat by chance rather than as the climax of some coveted biochemical problem. Gradually, however, the unique role of sulfonium compounds, especially of S-adenosyl-methionine, in enzymatic group transfer reactions such as transmethylation was recognized, and the recent upsurge of interest has been exceptional.KeywordsSulfonium GroupAdenosine TriphosphateMethyl IodideMethyl DonorHomoserine LactoneThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Metalforming with Pulsed Magnetic Fields

Strong, short-duration magnetic fields may be used for direct forming of metal parts. Since the energy for forming is imparted to the workpiece solely through the magnetic field, many unusual capabilities and applications exist for the process.

Paper L–2: Unusual Applications of Optical Instrumentation at NOTS

Paper L–2: Unusual Applications of Optical Instrumentation at NOTS