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1

Instability in Rotating Machinery  

NASA Technical Reports Server (NTRS)

The proceedings contain 45 papers on a wide range of subjects including flow generated instabilities in fluid flow machines, cracked shaft detection, case histories of instability phenomena in compressors, turbines, and pumps, vibration control in turbomachinery (including antiswirl techniques), and the simulation and estimation of destabilizing forces in rotating machines. The symposium was held to serve as an update on the understanding and control of rotating machinery instability problems.

1985-01-01

2

Rotating-Machinery Critical Speeds  

NASA Technical Reports Server (NTRS)

Computer program available from COSMIC provides quick, efficient, and accurate results in support of preliminary and proposed rotating-machinery designs. Advanced rotating-machinery design is iterative process in early stages of development. New program provides timely, critical-speed calculations to support preliminary rotating-machinery designs.

Beatty, R. F.; Mowers, A. L.; Mogil, E.

1983-01-01

3

Automated Rotating-Machinery Analysis  

NASA Technical Reports Server (NTRS)

Computer-controlled automatic system processes accelerometer data from rotating machines, producing mathematical description and graphical display of shaft motion. Program saves processing time, readily identifies type of motion (circular, looped, or elliptical), provides annotated assessments to assist in failure analysis, alerts user to look for distinctive characteristics of machinery, and creates informative plots.

Clark, J.

1986-01-01

4

Dynamic simulation of high speed rotating machinery  

E-print Network

DYNAMIC SIMULATION OF HIGH SPEED ROTATING MACHINERY A Thesis by EDDIE LEE MORGAN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1977 Major... Subject: Mechanical Engineering DYNAMIC SII1ULATI ON OF HIGH SPEED ROTATING MACHINERY A Thesis by EDDIE LEE MORGAN Approved as to sty1e and content by Chairman of Committee Head of artment) (Member (Member August 1977 ABSTRACT Dynam1c...

Morgan, Eddie Lee

1977-01-01

5

Active Vibration Dampers For Rotating Machinery  

NASA Technical Reports Server (NTRS)

Active dampers developed to suppress vibrations in rotating machinery. Essentially feedback control systems and reciprocating piezoelectric actuators. Similar active damper containing different actuators described in LEW-14488. Concept also applicable to suppression of vibrations in stationary structures subject to winds and earthquakes. Active damper offers adjustable suppression of vibrations. Small and lightweight and responds faster to transients.

Kascack, Albert F.; Ropchock, John J.; Lakatos, Tomas F.; Montague, Gerald T.; Palazzolo, Alan; Lin, Reng Rong

1994-01-01

6

Hindawi Publishing Corporation International Journal of Rotating Machinery  

E-print Network

Hindawi Publishing Corporation International Journal of Rotating Machinery Volume 2006, Article ID, assuring the safety of rotating machinery, has drastically increased. It was recognized that one on the dynamic behav- iour of rotating machinery [1­7]. The two major types bear- ings that are currently used

Boyer, Edmond

7

Hindawi Publishing Corporation International Journal of Rotating Machinery  

E-print Network

Hindawi Publishing Corporation International Journal of Rotating Machinery Volume 2007, Article ID, the multiple-shaft rotating machinery has drastically increased and is quite a known design solution for power the mass of the stator of multiple-shaft rotating machinery is the utilization of in- tershaft bearings

Paris-Sud XI, Université de

8

Use of Mechatronic Components in Rotating Machinery  

NASA Astrophysics Data System (ADS)

Mechatronic components are getting more and more common in mechanical systems. As an example Active Magnetic Bearings (AMB) are often used in Rotating Machinery. Besides their function of an oil-, contact- and frictionless levitation of the rotor, they are best suited to be used as an exciter and measurement instrument to extract more information from the system under observation. In this paper it is shown, how Active Magnetic Bearings can be used for identification, diagnosis and optimization purposes.

Nordmann, Rainer

9

Hindawi Publishing Corporation International Journal of Rotating Machinery  

E-print Network

Hindawi Publishing Corporation International Journal of Rotating Machinery Volume 2006, Article ID of the rotating machinery industry is to un- derstand correctly the vibration phenomena and to predict the dynamic machinery. Thus, the instability of propellers due to the interaction between the dynamics of the blades

Paris-Sud XI, Université de

10

Improved design of item in high speed rotating machinery  

NASA Technical Reports Server (NTRS)

Greater centrifugal radial growth of the preimpeller hub with respect to the impeller and nut at operating speed alleviates clamping and alignment problems in high speed rotating machinery. Design results in axial tightness and radial piloting of the preimpeller.

Dietrich, J. A.

1969-01-01

11

Precision optical angular position marker system for rotating machinery  

NASA Technical Reports Server (NTRS)

An optical system is described which generates one or more markers of the angular shaft position of rotating machinery. The system consists of a light source, an optical cable, a machinery mounted lens assembly, a light detector, and a signal conditioner. Light reflected by targets on the rotor is converted to a digital output signal. The system is highly immune to extreme environments of vibration and temperature and achieved a 0.002 percent precision under operational test conditions.

Barranger, J. P.

1983-01-01

12

Web-based Interactive Simulator for Rotating Machinery.  

ERIC Educational Resources Information Center

Baroma (Balance of Rotating Machinery), the Web-based educational engineering interactive software for teaching/learning combines didactical and software ergonomical approaches. The software in tutorial form simulates a problem using Visual Interactive Simulation in graphic display, and animation is brought about through graphical user interface

Sirohi, Vijayalaxmi

1999-01-01

13

Vibration-Based Damage Detection in Rotating Machinery  

SciTech Connect

Damage detection as determined from changes in the vibration characteristics of a system has been a popular research topic for the last thirty years. Numerous damage identification algorithms have been proposed for detecting and locating damage in structural and mechanical systems. To date, these damage-detection methods have shown mixed results. A particular application of vibration-based damage detection that has perhaps enjoyed the greatest success is that of damage detection in rotating machinery. This paper summarizes the state of technology in vibration-based damage detection applied to rotating machinery. The review interprets the damage detection process in terms of a statistical pattern recognition paradigm that encompasses all vibration-based damage detection methods and applications. The motivation for the study reported herein is to identify the reasons that vibration-based damage detection has been successfully applied to rotating machinery, but has yet to show robust applications to civil engineering infrastructure. The paper concludes by comparing and contrasting the vibration-based damage detection applied to rotating machinery with large civil engineering infrastructure applications.

Farrar, C.R.; Duffey, T.A.

1999-06-28

14

Rotating electric machinery and transformer technology  

SciTech Connect

Increasing use is now being made of solid-state motor controls. The vast majority of installed motors continue to use the traditional electromagnetic relays and contactors, but newly-designed installations are turning more and more frequently to solid-state controls. Since the use of diodes, transistors, SCRs, DIACs, and TRIACs has moved from the laboratory to the commercially recognized product, it is necessary that the emerging technician and engineer understand their applications in motor control. The major changes in this edition are devoted to solid-state control technology as applied to motors. At the same time, the new methods for efficiency determination and calibration of motors that have been presented from the first edition have found commercial recognition. The determination of armature circuit losses under dynamic conditions with what we call Forgue's method has been successfully applied to diesel electric locomotive traction motors in the 900 horsepower range. When combined with rotational loss determinations as described in this book, the operating efficiency of a motor under locomotive conditions has been measured without the need for a dynamometer installation.

Richardson, D.V.; Caisse, A.J.

1987-01-01

15

Fault Detection of Rotating Machinery using the Spectral Distribution Function  

NASA Technical Reports Server (NTRS)

The spectral distribution function is introduced to characterize the process leading to faults in rotating machinery. It is shown to be a more robust indicator than conventional power spectral density estimates, but requires only slightly more computational effort. The method is illustrated with examples from seeded gearbox transmission faults and an analytical model of a defective bearing. Procedures are suggested for implementation in realistic environments.

Davis, Sanford S.

1997-01-01

16

Elements of active vibration control for rotating machinery  

NASA Technical Reports Server (NTRS)

The success or failure of active vibration control is determined by the availability of suitable actuators, modeling of the entire system including all active elements, positioning of the actuators and sensors, and implementation of problem-adapted control concepts. All of these topics are outlined and their special problems are discussed in detail. Special attention is given to efficient modeling of systems, especially for considering the active elements. Finally, design methods for and the application of active vibration control on rotating machinery are demonstrated by several real applications.

Ulbrich, Heinz

1990-01-01

17

Failure Accommodation Tested in Magnetic Suspension Systems for Rotating Machinery  

NASA Technical Reports Server (NTRS)

The NASA Glenn Research Center at Lewis Field and Texas A&M University are developing techniques for accommodating certain types of failures in magnetic suspension systems used in rotating machinery. In recent years, magnetic bearings have become a viable alternative to rolling element bearings for many applications. For example, industrial machinery such as machine tool spindles and turbomolecular pumps can today be bought off the shelf with magnetically supported rotating components. Nova Gas Transmission Ltd. has large gas compressors in Canada that have been running flawlessly for years on magnetic bearings. To help mature this technology and quiet concerns over the reliability of magnetic bearings, NASA researchers have been investigating ways of making the bearing system tolerant to faults. Since the potential benefits from an oil-free, actively controlled bearing system are so attractive, research that is focused on assuring system reliability and safety is justifiable. With support from the Fast Quiet Engine program, Glenn's Structural Mechanics and Dynamics Branch is working to demonstrate fault-tolerant magnetic suspension systems targeted for aerospace engine applications. The Flywheel Energy Storage Program is also helping to fund this research.

Provenza, Andy J.

2000-01-01

18

7th IFToMM-Conference on Rotor Dynamics, Vienna, Austria, 25-28 September 2006 Mechatronics in Rotating Machinery  

E-print Network

in Rotating Machinery Chong-Won Lee Center for Noise and Vibration Control (NOVIC) Department of Mechanical In this survey paper, we discuss the recent progress in researches on mechatronics in rotating machinery. Even has already been made in rotating machinery. Automatic balancer, for example, is a typical

Kim, Yong Jung

19

Low Power Magnetic Bearing Design for High Speed Rotating Machinery  

NASA Technical Reports Server (NTRS)

Magnetic suspension technology has advanced to the point of being able to offer a number of advantages to a variety of applications in the rotating machinery and aerospace fields. One strong advantage is the decrease in power consumption. The design and construction of a set of permanent magnet biased, actively controlled magnetic bearing for a flexible rotor are presented. Both permanent magnets and electromagnets are used in a configuration which effectively provides the necessary fluxes in the appropriate air gaps, while simultaneously keeping the undesirable destabilizing forces to a minimum. The design includes two radial bearings and a thrust bearing. The theoretical development behind the design is briefly discussed. Experimental performance results for a set of operating prototype bearings is presented. The results include measurements of load capacity, bearing stiffness and damping, and the dynamic response of the rotor. With few exceptions, the experimental results matched very well with the predicted performance. The power consumption of these bearings was found to be significantly reduced from that for a comparable set of all electromagnetic bearings.

Allaire, P. E.; Maslen, E. H.; Humphris, R. R.; Sortore, C. K.; Studer, P. A.

1992-01-01

20

Analysis and experimental study of a plate-type hydraulic vibration damper for cryogenic rotating machinery  

E-print Network

ANALYSIS AND EXPERIMENTAL STUDY OF A PLATE-TYPE HYDRAULIC VIBRATION DAMPER FOR CRYOGENIC ROTATING MACHINERY A Thesis by EMMANUEL ANGUSTIA OLAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1991 Major Subject: Mechanical Engineering ANALYSIS AND EXPERIMENTAL STUDY OF A PLATE-TYPE HYDRAULIC VIBRATION DAMPER FOR CRYOGENIC ROTATING MACHINERY A Thesis by EMMANUEL ANGUSTIA OLAN Approved...

Olan, Emmanuel Angustia

1991-01-01

21

International Journal of Rotating Machinery 2005:3, 179189 c 2005 J.-J. Sinou et al.  

E-print Network

International Journal of Rotating Machinery 2005:3, 179­189 c 2005 J.-J. Sinou et al. Experimental of industrial plants. Effectively, due to the fact that most of the rotating machinery operate above the first in order to undertake the influence of the support flexibility of rotor machinery. Effectively, the dynamic

Boyer, Edmond

22

Centrifugally activated bearing for high-speed rotating machinery  

DOEpatents

A centrifugally activated bearing is disclosed. The bearing includes an annular member that extends laterally and radially from a central axis. A rotating member that rotates about the central axis relative to the annular member is also included. The rotating member has an interior chamber that surrounds the central axis and in which the annular member is suspended. Furthermore, the interior chamber has a concave shape for retaining a lubricant therein while the rotating member is at rest and for retaining a lubricant therein while the rotating member is rotating. The concave shape is such that while the rotating member is rotating a centrifugal force causes a lubricant to be forced away from the central axis to form a cylindrical surface having an axis collinear with the central axis. This centrifugally displaced lubricant provides restoring forces to counteract lateral displacement during operation.

Post, Richard F. (Walnut Creek, CA)

1994-01-01

23

Centrifugally activated bearing for high-speed rotating machinery  

DOEpatents

A centrifugally activated bearing is disclosed. The bearing includes an annular member that extends laterally and radially from a central axis. A rotating member that rotates about the central axis relative to the annular member is also included. The rotating member has an interior chamber that surrounds the central axis and in which the annular member is suspended. Furthermore, the interior chamber has a concave shape for retaining a lubricant therein while the rotating member is at rest and for retaining a lubricant therein while the rotating member is rotating. The concave shape is such that while the rotating member is rotating a centrifugal force causes a lubricant to be forced away from the central axis to form a cylindrical surface having an axis collinear with the central axis. This centrifugally displaced lubricant provides restoring forces to counteract lateral displacement during operation. 4 figures.

Post, R.F.

1994-02-15

24

Rotating machinery - Dynamics; Proceedings of the 3rd International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-3), Honolulu, HI, Apr. 1-4, 1990  

NASA Astrophysics Data System (ADS)

Topics addressed include rotordynamic software, blade loss dynamics of a magnetically supported rotor, flow visualization in a single simulated brush seal, an analytical investigation of a cryogenic journal bearing, vibration protection of aeration turbine gear motor, a simple procedure for assessing rotor stability, and stability of rotating cylindrical shells including nonlinear stiffening. Attention is also given to aeroelastic analysis of vertical axis wind turbines, an active chamber system for vibration control of rotating machinery, a computer system for multibearing rotor design, equations of motion of a flexible rotor with axially loose disc, and simulation research on the dynamic characteristics of a steam-injected gas turbine.

Kim, J. H.; Yang, W.-J.

25

EVALUATING MANUFACTURING AND ASSEMBLY ERRORS IN ROTATING MACHINERY TO ENHANCE COMPONENT PERFORMANCE  

Microsoft Academic Search

Manufacturing and assembly phases play a crucial role in providing products that meet the strict functional specifications associated with rotating machinery components. The errors re- sulting during the production of such components are correlated with the vibration and noise emanating from the final system dur- ing its operational lifetime. Vibration and noise are especially unacceptable elements in high-risk systems such

Irem Y. Tumer; Edward M. Huff

26

Mechanical design handbook for elastomers. [the design of elastomer dampers for application in rotating machinery  

NASA Technical Reports Server (NTRS)

A comprehensive guide for the design of elastomer dampers for application in rotating machinery is presented. Theoretical discussions, a step by step procedure for the design of elastomer dampers, and detailed examples of actual elastomer damper applications are included. Dynamic and general physical properties of elastomers are discussed along with measurement techniques.

Darlow, M.; Zorzi, E.

1981-01-01

27

Lubrication and wear characteristics of power plant rotating machinery. (Latest citations from Fluidex). Published Search  

SciTech Connect

The bibliography contains citations concerning the lubrication and wear of rotating machinery parts. Topics include the effects of lubricants on bearings and the resulting friction effects on fuel consumption. The use of hard surfacing for wear resistance is considered. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1996-03-01

28

ARTIFICIAL NEURAL NETWORK BASED FAULT DIAGNOSTICS OF ROTATING MACHINERY USING WAVELET TRANSFORMS AS A PREPROCESSOR  

Microsoft Academic Search

The purpose of condition monitoring and fault diagnostics are to detect and distinguish faults occurring in machinery, in order to provide a significant improvement in plant economy, reduce operational and maintenance costs and improve the level of safety. The condition of a model drive-line, consisting of various interconnected rotating parts, including an actual vehicle gearbox, two bearing housings, and an

B. A. Paya; I. I. Esat; M. N. M. Badi

1997-01-01

29

Determination of Saturated Values of Rotating Machinery Incremental and Apparent Inductances by an Energy Perturbation Method  

Microsoft Academic Search

Energy and winding current perturbations form the basis of a method for calculation of the saturated apparent and incremental inductances of rotating machinery as functions of rotor position and machine winding excitation currents. The method is totally general and utilizes numerical field calculation techniques in obtaining stored energy in the magnetic circuits of such machines. Thus, it can be applied

T. W. Nehl; F. A. Fouad; N. A. Demerdash

1982-01-01

30

LMD method and multi-class RWSVM of fault diagnosis for rotating machinery using condition monitoring information.  

PubMed

Timely and accurate condition monitoring and fault diagnosis of rotating machinery are very important to maintain a high degree of availability, reliability and operational safety. This paper presents a novel intelligent method based on local mean decomposition (LMD) and multi-class reproducing wavelet support vector machines (RWSVM), which is applied to diagnose rotating machinery faults. First, the sensor-based vibration signals measured from the rotating machinery are preprocessed by the LMD method and product functions (PFs) are produced. Second, statistic features are extracted to acquire more fault characteristic information from the sensitive PF. Finally, these features are fed into a multi-class RWSVM to identify the rotating machinery health conditions. The experimental results validate the effectiveness of the proposed RWSVM method in identifying rotating machinery fault patterns accurately and effectively and its superiority over that based on the general SVM. PMID:23881133

Liu, Zhiwen; Chen, Xuefeng; He, Zhengjia; Shen, Zhongjie

2013-01-01

31

Vibration monitoring of EDF rotating machinery using artificial neural networks  

SciTech Connect

Vibration monitoring of components in nuclear power plants has been used for a number of years. This technique involves the analysis of vibration data coming from vital components of the plant to detect features which reflect the operational state of machinery. The analysis leads to the identification of potential failures and their causes, and makes it possible to perform efficient preventive maintenance. Earlydetection is important because it can decrease the probability of catastrophic failures, reduce forced outgage, maximize utilization of available assets, increase the life of the plant, and reduce maintenance costs. This paper documents our work on the design of a vibration monitoring methodology based on neural network technology. This technology provides an attractive complement to traditional vibration analysis because of the potential of neural networks to operate in real-time mode and to handle data which may be distorted or noisy. Our efforts have been concentrated on the analysis and classification of vibration signatures collected by Electricite de France (EDF). Two neural networks algorithms were used in our project: the Recirculation algorithm and the Backpropagation algorithm. Although this project is in the early stages of development it indicates that neural networks may provide a viable methodology for monitoring and diagnostics of vibrating components. Our results are very encouraging.

Alguindigue, I.E.; Loskiewicz-Buczak, A.; Uhrig, R.E. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering; Hamon, L.; Lefevre, F. [Electricite de France, 78 - Chatou (France). Direction des Etudes et Recherches

1991-12-31

32

Vibration monitoring of EDF rotating machinery using artificial neural networks  

SciTech Connect

Vibration monitoring of components in nuclear power plants has been used for a number of years. This technique involves the analysis of vibration data coming from vital components of the plant to detect features which reflect the operational state of machinery. The analysis leads to the identification of potential failures and their causes, and makes it possible to perform efficient preventive maintenance. Earlydetection is important because it can decrease the probability of catastrophic failures, reduce forced outgage, maximize utilization of available assets, increase the life of the plant, and reduce maintenance costs. This paper documents our work on the design of a vibration monitoring methodology based on neural network technology. This technology provides an attractive complement to traditional vibration analysis because of the potential of neural networks to operate in real-time mode and to handle data which may be distorted or noisy. Our efforts have been concentrated on the analysis and classification of vibration signatures collected by Electricite de France (EDF). Two neural networks algorithms were used in our project: the Recirculation algorithm and the Backpropagation algorithm. Although this project is in the early stages of development it indicates that neural networks may provide a viable methodology for monitoring and diagnostics of vibrating components. Our results are very encouraging.

Alguindigue, I.E.; Loskiewicz-Buczak, A.; Uhrig, R.E. (Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering); Hamon, L.; Lefevre, F. (Electricite de France, 78 - Chatou (France). Direction des Etudes et Recherches)

1991-01-01

33

Fault diagnosis of rotating machinery with a novel statistical feature extraction and evaluation method  

NASA Astrophysics Data System (ADS)

Fault diagnosis of rotating machinery is receiving more and more attentions. Vibration signals of rotating machinery are commonly analyzed to extract features of faults, and the features are identified with classifiers, e.g. artificial neural networks (ANNs) and support vector machines (SVMs). Due to nonlinear behaviors and unknown noises in machinery, the extracted features are varying from sample to sample, which may result in false classifications. It is also difficult to analytically ensure the accuracy of fault diagnosis. In this paper, a feature extraction and evaluation method is proposed for fault diagnosis of rotating machinery. Based on the central limit theory, an extraction procedure is given to obtain the statistical features with the help of existing signal processing tools. The obtained statistical features approximately obey normal distributions. They can significantly improve the performance of fault classification, and it is verified by taking ANN and SVM classifiers as examples. Then the statistical features are evaluated with a decoupling technique and compared with thresholds to make the decision on fault classification. The proposed evaluation method only requires simple algebraic computation, and the accuracy of fault classification can be analytically guaranteed in terms of the so-called false classification rate (FCR). An experiment is carried out to verify the effectiveness of the proposed method, where the unbalanced fault of rotor, inner race fault, outer race fault and ball fault of bearings are considered.

Li, Wei; Zhu, Zhencai; Jiang, Fan; Zhou, Gongbo; Chen, Guoan

2015-01-01

34

SHIRTBUTTON-SIZED GAS TURBINES: THE ENGINEERING CHALLENGES OF MICRO HIGH SPEED ROTATING MACHINERY  

Microsoft Academic Search

MIT is developing micro-electro-mechanical systems (MEMS)-based gas turbine engines, turbogenerators, and rocket engines. Fabricated in large numbers in parallel using semicon- ductor manufacturing techniques, these engines-on-a-chip are based on micro-high speed rotating machinery with power den- sities approaching those of their more familiar, full-sized breth- ren. The micro-gas turbine is a 2 cm diameter by 3 mm thick Si or

Alan H. Epstein; Stuart A. Jacobson; Jon M. Protz; Luc G. Frechette

2000-01-01

35

Fault Diagnosis of Rotating Machinery Based on an Adaptive Ensemble Empirical Mode Decomposition  

PubMed Central

The vibration based signal processing technique is one of the principal tools for diagnosing faults of rotating machinery. Empirical mode decomposition (EMD), as a time-frequency analysis technique, has been widely used to process vibration signals of rotating machinery. But it has the shortcoming of mode mixing in decomposing signals. To overcome this shortcoming, ensemble empirical mode decomposition (EEMD) was proposed accordingly. EEMD is able to reduce the mode mixing to some extent. The performance of EEMD, however, depends on the parameters adopted in the EEMD algorithms. In most of the studies on EEMD, the parameters were selected artificially and subjectively. To solve the problem, a new adaptive ensemble empirical mode decomposition method is proposed in this paper. In the method, the sifting number is adaptively selected, and the amplitude of the added noise changes with the signal frequency components during the decomposition process. The simulation, the experimental and the application results demonstrate that the adaptive EEMD provides the improved results compared with the original EEMD in diagnosing rotating machinery. PMID:24351666

Lei, Yaguo; Li, Naipeng; Lin, Jing; Wang, Sizhe

2013-01-01

36

International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-8) Honolulu, Hawaii, March 26-30, 2000 (in press)  

E-print Network

8th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-8@engr.sc.edu KEYWORDS: MEMS, reliability, quality control, micro-rotating machinery, optical inspection. ABSTRACT Micro of structures and machinery is a major concern of the engineering community. Flaw identification, early damage

Giurgiutiu, Victor

37

Test and theory for piezoelectric actuator-active vibration control of rotating machinery  

NASA Technical Reports Server (NTRS)

The application of piezoelectric actuators for active vibration control (AVC) of rotating machinery is examined. Theory is derived and the resulting predictions are shown to agree closely with results of tests performed on an air turbine driven-overhung rotor. The test results show significant reduction in unbalance, transient and sub-synchronous responses. Results from a 30-hour endurance test support the AVD system reliability. Various aspects of the electro-mechanical stability of the control system are also discussed and illustrated. Finally, application of the AVC system to an actual jet engine is discussed.

Palazzolo, A. B.; Lin, R. R.; Alexander, R. M.; Kascak, A. F.; Montague, J.

1989-01-01

38

Damage detection in rotating machinery by means of entropy-based parameters  

NASA Astrophysics Data System (ADS)

The paper is proposing two new entropy-based parameters, namely Renyi Entropy Index (REI) and Sharma-Mittal Entropy Index (SMEI), for detecting the presence of failures (or damages) in rotating machinery, namely: belt structural damage, belt wheels misalignment, failure of the fixing bolt of the machine to its baseplate and eccentricities (i.e.: due to detaching a small piece of material or bad mounting of the rotating components of the machine). The algorithms to obtain the proposed entropy-based parameters are described and test data is used in order to assess their sensitivity. A vibration test bench is used for measuring the levels of vibration while artificially inducing damage. The deviation of the two entropy-based parameters is compared in two states of the vibration test bench: not damaged and damaged. At the end of the study, their sensitivity is compared to Shannon Entropic Index.

Tocarciuc, Alexandru; Bereteu, Liviu; ?g?nescu, Gheorghe Eugen, Dr

2014-11-01

39

Multivariate EMD and full spectrum based condition monitoring for rotating machinery  

NASA Astrophysics Data System (ADS)

Early assessment of machinery health condition is of paramount importance today. A sensor network with sensors in multiple directions and locations is usually employed for monitoring the condition of rotating machinery. Extraction of health condition information from these sensors for effective fault detection and fault tracking is always challenging. Empirical mode decomposition (EMD) is an advanced signal processing technology that has been widely used for this purpose. Standard EMD has the limitation in that it works only for a single real-valued signal. When dealing with data from multiple sensors and multiple health conditions, standard EMD faces two problems. First, because of the local and self-adaptive nature of standard EMD, the decomposition of signals from different sources may not match in either number or frequency content. Second, it may not be possible to express the joint information between different sensors. The present study proposes a method of extracting fault information by employing multivariate EMD and full spectrum. Multivariate EMD can overcome the limitations of standard EMD when dealing with data from multiple sources. It is used to extract the intrinsic mode functions (IMFs) embedded in raw multivariate signals. A criterion based on mutual information is proposed for selecting a sensitive IMF. A full spectral feature is then extracted from the selected fault-sensitive IMF to capture the joint information between signals measured from two orthogonal directions. The proposed method is first explained using simple simulated data, and then is tested for the condition monitoring of rotating machinery applications. The effectiveness of the proposed method is demonstrated through monitoring damage on the vane trailing edge of an impeller and rotor-stator rub in an experimental rotor rig.

Zhao, Xiaomin; Patel, Tejas H.; Zuo, Ming J.

2012-02-01

40

A novel torsional exciter for modal vibration testing of large rotating machinery  

NASA Astrophysics Data System (ADS)

A novel exciter for applying a dynamic torsional force to a rotating structure is presented in this paper. It has been developed at IPP in order to perform vibration tests with shaft assemblies of large flywheel generators (synchronous machines). The electromagnetic exciter (shaker) needs no fixture to the rotating shaft because the torque is applied by means of the stator winding of an electrical machine. Therefore, the exciter can most easily be applied in cases where a three-phase electrical machine (a motor or generator) is part of the shaft assembly. The oscillating power for the shaker is generated in a separate current-controlled DC circuit with an inductor acting as a buffer storage of magnetic energy. An AC component with adjustable frequency is superimposed on the inductor current in order to generate pulsating torques acting on the rotating shaft with the desired waveform and frequency. Since this torsional exciter does not require an external power source, can easily be installed (without contact to the rotating structure) and provides dynamic torsional forces which are sufficient for multi-megawatt applications, it is best suited for on-site tests of large rotating machinery.

Sihler, Christof

2006-10-01

41

Adaptive multiwavelets via two-scale similarity transforms for rotating machinery fault diagnosis  

NASA Astrophysics Data System (ADS)

Fault diagnosis of rotating machinery is very important and critical to avoid serious accidents. However, the complex and non-stationary vibration signals with a large amount of noise make the fault detection to be challenging, especially at the early stage. Based on the inner product principle, fault detection using wavelet transforms is to match fault features most correlative to basis functions, and its effectiveness is determined by the construction and choice of wavelet basis function. In this paper, a new method based on adaptive multiwavelets via two-scale similarity transforms (TSTs) is proposed. Multiwavelets can offer multiple wavelet basis functions and so have the possibility of matching various fault features preferably. TSTs are simple and straightforward methods to design a series of new biorthogonal multiwavelets with some desirable properties. Using TSTs, a changeable and adaptive multiwavelet library is established so as to provide various ascendant multiple basis functions for inner product operation. By the rule of kurtosis maximization principle, optimal multiwavelets most similar to the fault features of a given signal are searched for. The applications to a rolling bearing of outer-race fault and a flue gas turbine unit of rub-impact fault show that the proposed method is an effective approach to detecting the impulse feature components hidden in vibration signals and performs well for rotating machinery fault diagnosis.

Yuan, Jing; He, Zhengjia; Zi, Yanyang; Lei, Yaguo; Li, Zhen

2009-07-01

42

Feature extraction using adaptive multiwavelets and synthetic detection index for rotor fault diagnosis of rotating machinery  

NASA Astrophysics Data System (ADS)

State identification to diagnose the condition of rotating machinery is often converted to a classification problem of values of non-dimensional symptom parameters (NSPs). To improve the sensitivity of the NSPs to the changes in machine condition, a novel feature extraction method based on adaptive multiwavelets and the synthetic detection index (SDI) is proposed in this paper. Based on the SDI maximization principle, optimal multiwavelets are searched by genetic algorithms (GAs) from an adaptive multiwavelets library and used for extracting fault features from vibration signals. By the optimal multiwavelets, more sensitive NSPs can be extracted. To examine the effectiveness of the optimal multiwavelets, conventional methods are used for comparison study. The obtained NSPs are fed into K-means classifier to diagnose rotor faults. The results show that the proposed method can effectively improve the sensitivity of the NSPs and achieve a higher discrimination rate for rotor fault diagnosis than the conventional methods.

Lu, Na; Xiao, Zhihuai; Malik, O. P.

2015-02-01

43

Anion Rotational Disorder in Sodium Nitrate  

Microsoft Academic Search

The photographic study of X-ray diffuse scattering from a single crystal was made in order to determine the rotational disorder of NO3 groups above the critical temperature 275C. The rounded diffuse maxima which appear at the positions of super-lattice reflections of the ordered lattice are identified with those due to the disorder of NO3 groups. It is concluded that the

Yasuhiro Shinnaka

1964-01-01

44

Fault diagnosis of rotating machinery using an intelligent order tracking system  

NASA Astrophysics Data System (ADS)

This research focuses on the development of an intelligent diagnostic system for rotating machinery. The system is composed of a signal processing module and a state inference module. In the signal processing module, the recursive least square (RLS) algorithm and the Kalman filter are exploited to extract the order amplitudes of vibration signals, followed by fault classification using the fuzzy state inference module. The RLS algorithm and Kalman filter provide advantages in order tracking over conventional Fourier-based techniques in that they are insensitive to smearing problems arising from closely spaced orders or crossing orders. On the basis of thus obtained order features, the potential fault types are then deduced with the aid of a state inference engine. Human diagnostic rules are fuzzified for various common faults, including the single fault and double fault situations. This system is implemented on the platform of a floating point digital signal processor, where a photo switch and an accelerometer supply the shaft speed and acceleration signals, respectively. Experiments were carried out for a rotor kit and a practical four-cylinder engine to show the effectiveness of the proposed system in tracking the rotating order with precise inference.

Bai, Mingsian; Huang, Jiamin; Hong, Minghong; Su, Fucheng

2005-02-01

45

Analysis of the vibratory excitation of gear systems for fault detection in rotating machinery  

SciTech Connect

The concepts of model-based fault detection for vibration condition monitoring of rotating machinery are discussed and presented in this paper. The mathematical model presented and fully developed in the earlier works is further modified so it incorporates a typical gear tooth irregularity fault. This fault was simulated on the contact line of the gear model. The results obtained from this analytical model are compared with the ones obtained from a model drive-line. The drive-line consists of a number of rotating parts including an electric motor, a gear system, and a disk brake. The gear system has two meshing spur gears which is equivalent to the analytical model. The comparison of the results are very good as some vibration frequencies of the analytical results correlates with the experimental ones. it is shown that certain vibration frequencies of a real experimental model gear system can be obtained from its analytical counterpart. It is also shown that it is possible to model a typical gear tooth fault by simulating a forcing function as a shock to the modelled system.

Paya, B.A.; Esat, I.I. [Brunel Univ., Uxbridge (United Kingdom); Badi, M.N.M. [Univ. of Hertfordshire, Hatfield (United Kingdom)

1997-07-01

46

EEMD Independent Extraction for Mixing Features of Rotating Machinery Reconstructed in Phase Space.  

PubMed

Empirical Mode Decomposition (EMD), due to its adaptive decomposition property for the non-linear and non-stationary signals, has been widely used in vibration analyses for rotating machinery. However, EMD suffers from mode mixing, which is difficult to extract features independently. Although the improved EMD, well known as the ensemble EMD (EEMD), has been proposed, mode mixing is alleviated only to a certain degree. Moreover, EEMD needs to determine the amplitude of added noise. In this paper, we propose Phase Space Ensemble Empirical Mode Decomposition (PSEEMD) integrating Phase Space Reconstruction (PSR) and Manifold Learning (ML) for modifying EEMD. We also provide the principle and detailed procedure of PSEEMD, and the analyses on a simulation signal and an actual vibration signal derived from a rubbing rotor are performed. The results show that PSEEMD is more efficient and convenient than EEMD in extracting the mixing features from the investigated signal and in optimizing the amplitude of the necessary added noise. Additionally PSEEMD can extract the weak features interfered with a certain amount of noise. PMID:25871723

Ma, Zaichao; Wen, Guangrui; Jiang, Cheng

2015-01-01

47

An approach to performance assessment and fault diagnosis for rotating machinery equipment  

NASA Astrophysics Data System (ADS)

Predict and prevent maintenance is routinely carried out. However, how to address the problem of performance assessment maximizing the use of available monitoring data, and how to build a framework that integrates performance assessment, fault detection, and diagnosis are still a significant challenge. For this purpose, this article introduces an approach to performance assessment and fault diagnosis for rotating machinery, including wavelet packet decomposition for extracting energy feature samples from vibration signals acquired during normal and faulty conditions; clustering analysis for demonstrating the separability of the samples; and Fisher discriminant analysis for providing an optimal lower-dimensional representation, in terms of maximizing the separability among different populations, by projecting the samples into a new space. In the new low-dimensional space, the Mahalanobis distance (MD) between the new measurement data and normal population can be calculated for performance assessment. Moreover, this model for performance assessment only requires data to be available in normal conditions and any one of all possible fault conditions, without the necessity for the full life cycle of condition monitoring data. In addition, if monitoring data under different fault conditions are available, the fault mode can be identified accurately by comparing the MDs between the new measurement data and each fault population. Finally, the proposed method was verified to be successful on performance assessment and fault diagnosis via a hydraulic pump test and a ball bearing test.

Tao, Xiaochuang; Lu, Chen; Lu, Chuan; Wang, Zili

2013-12-01

48

Evaluating Manufacturing and Assembly Errors in Rotating Machinery to Enhance Component Performance  

NASA Technical Reports Server (NTRS)

Manufacturing and assembly phases play a crucial role in providing products that meet the strict functional specifications associated with rotating machinery components. The errors resulting during the manufacturing and assembly of such components are correlated with the vibration and noise emanating from the final system during its operational lifetime. Vibration and noise are especially unacceptable elements in high-risk systems such as helicopters, resulting in premature component degradation and an unsafe flying environment. In such applications, individual components often are subject to 100% inspection prior to assembly, as well as during operation through rigorous maintenance, resulting in increased product development cycles and high production and operation costs. In this work, we focus on providing designers and manufacturing engineers with a technique to evaluate vibration modes and levels for each component or subsystem prior to putting them into operation. This paper presents a preliminary investigation of the correlation between vibrations and manufacturing and assembly errors using an experimental test rig, which simulates a simple bearing and shaft arrangement. A factorial design is used to study the effects of: 1) different manufacturing instances; 2) different assembly instances; and, 3) varying shaft speeds. The results indicate a correlation between manufacturing or assembly errors and vibrations measured from accelerometers. Challenges in developing a tool for DFM are identified, followed by a discussion of future work, including a real-world application to helicopter transmission vibrations.

Tumer, Irem Y.; Huff, Edward M.; Swanson, Keith (Technical Monitor)

2001-01-01

49

Rotating machinery dynamics simulation. I. Rigid systems with ball bearing nonlinearities and outer ring ovality under rotating unbalance excitation  

PubMed

The radial clearance in rolling bearing systems, required to compensate for dimensional changes associated with thermal expansion of the various parts during operation, may cause dimensional attrition and comprise bearing life, if unloaded operation occurs and balls skid [D. Childs and D. Moyer, ASME J. Eng. Gas Turb. Power 107, 152-159 (1985)]. Also, it can cause jumps in the response to unbalance excitation. These undesirable effects may be eliminated by introducing two or more loops into one of the bearing races so that at least two points of the ring circumference provide a positive zero clearance [D. Childs, Handbook of Rotordynamics, edited by F. Ehrich (McGraw-Hill, NY, 1992)]. The deviation of the outer ring with two loops, known as ovality, is one of the bearing distributed defects. Although this class of imperfections has received much work, none of the available studies has simulated the effect of the outer ring ovality on the dynamic behavior of rotating machinery under rotating unbalance with consideration of ball bearing nonlinearities, shaft elasticity, and speed of rotation. To fill this gap, the equations of motion of a rotor-ball bearing system are formulated using finite-elements (FE) discretization and Lagrange's equations. The analyses are specialized to a rigid-rotor system, by retaining the rigid body modes only in the FE solution. Samples of the results are presented in both time domain and frequency domain for a system with and without outer ring ovality. It is found that with ideal bearings (no ovality), the vibration spectrum is qualitatively and quantitatively the same in both the horizontal and vertical directions. When the ring ovality is introduced, however, the spectrum in both orthogonal planes is no longer similar. And magnitude of the bearing load has increased in the form of repeated random impacts, between balls and rings, in the horizontal direction (direction of maximum clearance) compared to a continuous contact along the vertical direction (direction of positive zero clearance). This underlines the importance of the vibration measuring probe's direction, with respect to the outer ring axes, to capture impact-induced vibrations. Moreover, when the harmonic excitation is increased for a system with ideal bearings, the spectral peaks above forcing frequency have shifted to a higher-frequency region, indicating some sort of a hard spring mechanism inherent in the system. Another observation, is that for the same external excitation, vibration amplitude at forcing frequency in the bearing force spectrum is the same for systems with or without outer ring ovality. PMID:10687695

el-Saeidy

2000-02-01

50

Application of the largest Lyapunov exponent for the diagnosis of rotor-to-stator rub in rotating machinery  

NASA Astrophysics Data System (ADS)

Vibration based diagnosis has played a vital role in the crucial analysis of faults in rotating machinery. The conventional vibration techniques currently being used in the industry are however not able to effectively identify nonlinear or complex signals due to, for example, rotor-to-stator rub. This paper reports on the application of the largest Lyapunov Exponent ?1 to diagnose the severity of rotor-to-stator rub in rotating machinery. The method of time delay was employed to reconstruct the vibration signal obtained from numerical simulation of a Jeffcott rotor subjected to rotor-to-stator rub. Numerical results show clear correlation between the increase of rub severity with the invariant quantity ?1 investigated in this work. Two different algorithms for the computation of ?1 were employed in this research, namely the Wolf algorithm and the Rosenstein algorithm.

ChangJie, Colin Heng; Inayat-Hussain, Jawaid I.

2014-10-01

51

Theory of translation-rotation coupling in sodium azide  

NASA Astrophysics Data System (ADS)

A microscopic theory of softening of elastic modulii in ?-NaN3, the high temperature phase of solid sodium azide, is given. The softening of the elastic modulii occurs due to coupling of the rotational degrees of freedom of an azide ion to the translational degrees of freedom of the neighboring ions. The softening of elastic modulus C44 is found to be more pronounced than that of C66, while C14 is found to be independent of temperature. The contribution of fourth order angular momentum terms l=4 to softening are found to be negligible for C44, but are appreciable for C66. A good fit to the Brillouin data of Kushida and Terhune (Ref. 1) is obtained by reducing both the electric charge on the end N atoms of N-3 and the strength of the Born-Mayer repulsive interaction from their values available in the literature. The experimental value of the extrapolated transition temperature Texpc =18 C agrees well with the calculated transition temperature of Tc =24 C.

Sahu, D.

1986-11-01

52

Some in-field experiences of non-synchronous vibrations in large rotating machinery  

NASA Technical Reports Server (NTRS)

Some problems associated with non-synchronous vibrations are analyzed by describing three cases experienced with fairly large rotating machines in operating conditions. In each case, a brief description is first given of the machine and of the instrumentation used. The experimental results are then presented, with reference to time or frequency domain recordings. The lines followed in diagnosis are then discussed and, lastly, the corrective action undertaken is presented.

Colnago, Giuseppe; Frigeri, Claudio; Vallini, Andrea; Zanetta, Gian Antonio

1989-01-01

53

Rotor Blade Pressure Measurement in a Rotating Machinery Using Pressure and Temperature Sensitive Paints  

NASA Technical Reports Server (NTRS)

Pressure and temperature sensitive paints have been utilized for the measurement of blade surface pressure and temperature distributions in a high speed axial compressor and an Allied Signal F109 gas turbine engine. Alternate blades were painted with temperature sensitive paints and then pressure sensitive paint. This combination allows temperature distributions to be accounted for when determining the blade suction surface pressure distribution. Measurements were taken and pressure maps on the suction surface of a blade were obtained over a range of rotational speeds. Pressure maps of the suction surface show-strong shock waves at the higher speeds.

Torgerson, S.; Liu, T.; Sullivan, J.

1998-01-01

54

Modeling of multi-rotor torsional vibrations in rotating machinery using substructuring  

NASA Technical Reports Server (NTRS)

The application of FEM modeling techniques to the analysis of torsional vibrations in complex rotating systems is described and demonstrated, summarizing results reported by Soares (1985). A substructuring approach is used for determination of torsional natural frequencies and resonant-mode shapes, steady-state frequency-sweep analysis, identification of dynamically unstable speed ranges, and characterization of transient linear and nonlinear systems. Results for several sample problems are presented in diagrams, graphs, and tables. STORV, a computer code based on this approach, is in use as a preliminary design tool for drive-train torsional analysis in the High Altitude Wind Tunnel at NASA Lewis.

Soares, Fola R.

1986-01-01

55

Bragg grating sensor for torsion and temperature measurements in rotating machinery  

NASA Astrophysics Data System (ADS)

Torque sensing on rotating shafts is important for monitoring electrical and internal combustion machines, especially for real-time computer control. Optical fiber sensors are ideally suited to this application because of many desirable properties such as immunity to electromagnetic interference, their multiplexing capability and small size. This paper discusses a dual fiber Bragg grating sensor for the independent measurement of temperature and torsion in a rotating shaft. It shows theoretically that whereas torsion affects the differential wavelength of the gratings in the proposed configuration, temperature changes in principle only the common-mode wavelength. These characteristics of the system allow one to measure both torsion and temperature with the same sensing system. For the particular system investigated experimentally, the differential wavelength change was 19.4 pm/Nm, and the corresponding temperature sensitivity was -0.67 pm/°C. In contrast to these values, the temperature sensitivity of the common-mode wavelength was 25.4 pm/°C, and its torque cross-sensitivity was -0.19 pm/Nm.

Swart, Pieter L.; Chtcherbakov, Anatoli A.; van Wyk, A. J.

2005-02-01

56

Numerical modeling of multidimensional flow in seals and bearings used in rotating machinery  

NASA Technical Reports Server (NTRS)

The rotordynamic behavior of turbomachinery is critically dependent on fluid dynamic rotor forces developed by various types of seals and bearings. The occurrence of self-excited vibrations often depends on the rotor speed and load. Misalignment and rotor wobbling motion associated with differential clearance were often attributed to stability problems. In general, the rotative character of the flowfield is a complex three dimensional system with secondary flow patterns that significantly alter the average fluid circumferential velocity. A multidimensional, nonorthogonal, body-fitted-grid fluid flow model is presented that describes the fluid dynamic forces and the secondary flow pattern development in seals and bearings. Several numerical experiments were carried out to demonstrate the characteristics of this complex flowfield. Analyses were performed by solving a conservation form of the three dimensional Navier-Stokes equations transformed to those for a rotating observer and using the general-purpose computer code PHOENICS with the assumptions that the rotor orbit is circular and that static eccentricity is zero. These assumptions have enabled a precise steady-state analysis to be used. Fluid injection from ports near the seal or bearing center increased fluid-film direct dynamic stiffness and, in some cases, significantly increased quadrature dynamic stiffness. Injection angle and velocity could be used for active rotordynamic control; for example, injection, when compared with no injection, increased direct dynamic stiffness, which is an important factor for hydrostatic bearings.

Hendricks, R. C.; Tam, L. T.; Przekwas, A.; Muszynska, A.; Braun, M. J.; Mullen, R. L.

1988-01-01

57

Use of piezoelectric actuators in active vibration control of rotating machinery  

NASA Technical Reports Server (NTRS)

Theoretical and test results for the development of piezoelectric-actuator-based active vibration control (AVC) are presented. The evolution of this technology starts with an ideal model of the actuator and progresses to a more sophisticated model where the pushers force the squirrel cage ball bearing supports of a rotating shaft. The piezoelectric pushers consist of a stack of piezoelectric ceramic disks that are arranged on top of one another and connected in parallel electrically. This model consists of a prescribed displacement that is proportional to the input voltage and a spring that represents the stiffness of the stack of piezoelectric disks. System tests were carried out to stabilize the AVC system, verify its effectiveness in controlling vibration, and confirm the theory presented.

Lin, Reng Rong; Palazzolo, Alan B.; Kascak, Albert F.; Montague, Gerald

1990-01-01

58

Putative Channel Components for the Fast-Rotating Sodium Driven Flagellar Motor of a Marine Bacterium  

Microsoft Academic Search

The polar flagellum of Vibrio alginolyticus rotates remarkably fast (up to 1,700 revolutions per second) by using a motor driven by sodium ions. Two genes, motX and motY, for the sodium-driven flagellar motor have been identified in marine bacteria, Vibrio parahaemolyticus and V. alginolyticus. They have no similarity to the genes for proton-driven motors, motA and motB, whose products constitute

YUKAKO ASAI; SEIJI KOJIMA; HARUKI KATO; NORIKO NISHIOKA; IKURO KAWAGISHI; MICHIO HOMMA

1997-01-01

59

Thermal image enhancement using bi-dimensional empirical mode decomposition in combination with relevance vector machine for rotating machinery fault diagnosis  

NASA Astrophysics Data System (ADS)

In this study, a novel fault diagnosis system for rotating machinery using thermal imaging is proposed. This system consists of bi-dimensional empirical mode decomposition (BEMD) for image enhancement, a generalized discriminant analysis (GDA) for feature reduction, and a relevance vector machine (RVM) for fault classification. Firstly, the thermal image obtained from machine conditions is decomposed into intrinsic mode functions (IMFs) by using BEMD. At each decomposed level, the IMF is expanded and fused with the residue by gray-scale transformation and principal component analysis fusion technique, respectively. The enhanced image is then formed by the improved IMFs in reconstruction process. Subsequently, feature extraction is applied for the enhanced images to obtain histogram features which characterize the thermal image and contain useful information for diagnosis. The high dimensionality of the achieved feature set can be reduced by GDA implementation. Moreover, GDA also assists in the increase of the feature cluster separation. Finally, the diagnostic results are performed by RVM. The proposed system is applied and validated with the thermal images of a fault simulator. A comparative study of the classification results obtained from RVM, support vector machines, and adaptive neuro-fuzzy inference system is also performed to appraise the accuracy of these models. The results show that the proposed diagnosis system is capable of improving the classification accuracy and efficiently assisting in rotating machinery fault diagnosis.

Tran, Van Tung; Yang, Bo-Suk; Gu, Fengshou; Ball, Andrew

2013-07-01

60

Two Redundant Sodium-Driven Stator Motor Proteins Are Involved in Aeromonas hydrophila Polar Flagellum Rotation?  

PubMed Central

Motility is an essential characteristic for mesophilic Aeromonas strains. We identified a new polar flagellum region (region 6) in the A. hydrophila AH-3 (serotype O34) chromosome that contained two additional polar stator genes, named pomA2 and pomB2. A. hydrophila PomA2 and PomB2 are highly homologous to other sodium-conducting polar flagellum stator motors as well as to the previously described A. hydrophila AH-3 PomA and PomB. pomAB and pomA2B2 were present in all the mesophilic Aeromonas strains tested and were independent of the strains' ability to produce lateral flagella. Unlike MotX, which is a stator protein that is essential for polar flagellum rotation, here we demonstrate that PomAB and PomA2B2 are redundant sets of proteins, as neither set on its own is essential for polar flagellum motility in either aqueous or high-viscosity environments. Both PomAB and PomA2B2 are sodium-coupled stator complexes, although PomA2B2 is more sensitive to low concentrations of sodium than PomAB. Furthermore, the level of transcription in aqueous and high-viscosity environments of pomA2B2 is reduced compared to that of pomAB. The A. hydrophila AH-3 polar flagellum is the first case described in which two redundant sodium-driven stator motor proteins (PomAB and PomA2B2) are found. PMID:19181813

Wilhelms, Markus; Vilches, Silvia; Molero, Raquel; Shaw, Jonathan G.; Toms, Juan M.; Merino, Susana

2009-01-01

61

Hybrid Motor with H1- and Na1Driven Components Can Rotate Vibrio Polar Flagella by Using Sodium Ions  

Microsoft Academic Search

The bacterial flagellar motor is a molecular machine that converts ion flux across the membrane into flagellar rotation. The coupling ion is either a proton or a sodium ion. The polar flagellar motor of the marine bacterium Vibrio alginolyticus is driven by sodium ions, and the four protein components, PomA, PomB, MotX, and MotY, are essential for motor function. Among

YUKAKO ASAI; IKURO KAWAGISHI; R. ELIZABETH SOCKETT; MICHIO HOMMA

62

Output-only cyclo-stationary linear-parameter time-varying stochastic subspace identification method for rotating machinery and spinning structures  

NASA Astrophysics Data System (ADS)

Economical maintenance and operation are critical issues for rotating machinery and spinning structures containing blade elements, especially large slender dynamic beams (e.g., wind turbines). Structural health monitoring systems represent promising instruments to assure reliability and good performance from the dynamics of the mechanical systems. However, such devices have not been completely perfected for spinning structures. These sensing technologies are typically informed by both mechanistic models coupled with data-driven identification techniques in the time and/or frequency domain. Frequency response functions are popular but are difficult to realize autonomously for structures of higher order, especially when overlapping frequency content is present. Instead, time-domain techniques have shown to possess powerful advantages from a practical point of view (i.e. low-order computational effort suitable for real-time or embedded algorithms) and also are more suitable to differentiate closely-related modes. Customarily, time-varying effects are often neglected or dismissed to simplify this analysis, but such cannot be the case for sinusoidally loaded structures containing spinning multi-bodies. A more complex scenario is constituted when dealing with both periodic mechanisms responsible for the vibration shaft of the rotor-blade system and the interaction of the supporting substructure. Transformations of the cyclic effects on the vibrational data can be applied to isolate inertial quantities that are different from rotation-generated forces that are typically non-stationary in nature. After applying these transformations, structural identification can be carried out by stationary techniques via data-correlated eigensystem realizations. In this paper, an exploration of a periodic stationary or cyclo-stationary subspace identification technique is presented here for spinning multi-blade systems by means of a modified Eigensystem Realization Algorithm (ERA) via stochastic subspace identification (SSI) and linear parameter time-varying (LPTV) techniques. Structural response is assumed to be stationary ambient excitation produced by a Gaussian (white) noise within the operative range bandwidth of the machinery or structure in study. ERA-OKID analysis is driven by correlation-function matrices from the stationary ambient response aiming to reduce noise effects. Singular value decomposition (SVD) and eigenvalue analysis are computed in a last stage to identify frequencies and complex-valued mode shapes. Proposed assumptions are carefully weighted to account for the uncertainty of the environment. A numerical example is carried out based a spinning finite element (SFE) model, and verified using ANSYS Ver. 12. Finally, comments and observations are provided on how this subspace realization technique can be extended to the problem of modal-parameter identification using only ambient vibration data.

Velazquez, Antonio; Swartz, R. Andrew

2015-02-01

63

Control of hysteretic instability in rotating machinery by elastic suspension systems subject to dry and viscous friction  

NASA Astrophysics Data System (ADS)

Most of the undesired whirling motions of rotating machines can be efficiently reduced by supporting journal boxes elastically and controlling their movement by viscous dampers or by dry friction surfaces normal to the shaft axis, which rub against the frame. In the case of dry dampers, resonance ranges of the floating support configuration can be easily cut off by planning a motionless adhesive state of the friction surfaces. On the contrary, the dry friction contact must change automatically into sliding conditions when the fixed support resonances are to be feared. Moreover, the whirl amplitude can be restrained throughout the speed range by a proper choice of the suspension-to-shaft stiffness ratio and of the support-to-rotor mass ratio. This theoretical research deals firstly with the natural precession speeds and looks for Campbell plots in dependence on the shaft angular speed, for several rotor-suspension systems. Then, the steady response to unbalance is investigated, in terms of rotor and support orbits and of conical path of the rotor axis. In this search, the ranges of adhesive or sliding contact are identified in particular for system with dry friction damping. At last, the destabilizing influence of the shaft hysteresis in the supercritical regime is focalized and the counterbalancing effect of the other dissipative sources is verified. In the nonlinear case of dry friction dampers, the control of linear stability is fulfilled by a perturbation procedure, checking the magnitude of Floquet characteristic multipliers on the complex plane. Moreover, the nonlinear stability far from steady motion is tested by the direct numerical solution of the full motion equations. The comparison configuration of suspension systems with viscous dampers and no dry friction is examined through an analytical first approximation approach and closed-form results for stability thresholds are derived in particular for the symmetric case.

Sorge, Francesco; Cammalleri, Marco

2010-05-01

64

Rotational diffusion of bovine serum albumin denaturated by sodium dodecylsulfate, According to data from tryptophan fluorescence  

NASA Astrophysics Data System (ADS)

The rotational diffusion of bovine serum albumin (BSA) molecules in solutions with different concentrations of the anionic detergent sodium dodecylsulfate (SDS) at different pH values is investigated, yielding information on the denaturation of BSA under the action of SDS. It is found from the increased degree of polarization in the tryptophan fluorescence of BSA and the registered parameters for the rotational diffusion of BSA molecules that the denaturation of BSA under the action of SDS at pH values less than the isoelectric point (pI) of BSA (4-9) is a two-stage process. It is shown that the first stage of BSA denaturation common for all pH values is the decondensation of BSA globules, while the second stage of BSA denaturation at pH greater than the pI of BSA is the unfolding of the protein's amino acid chain. It is concluded that the denaturation of BSA under the action of SDS proceeds more deeply at pH values greater than the pI of BSA.

Vlasova, I. M.; Zhuravleva, V. V.; Saletskii, A. M.

2014-03-01

65

Shaft voltages and rotating machinery  

Microsoft Academic Search

In order to determine whether a machine is experiencing shaft voltage and current problems, recognition of the four types of damage is imperative. The four distinct types of shaft current damage, frosting, spark tracks, pitting, and welding are described. The four shaft voltage sources and their means of generation are discussed in detail. Methods for correction and\\/or elimination of these

Michael J. Costello

1993-01-01

66

An SVM-Based Classifier for Estimating the State of Various Rotating Components in Agro-Industrial Machinery with a Vibration Signal Acquired from a Single Point on the Machine Chassis  

PubMed Central

The goal of this article is to assess the feasibility of estimating the state of various rotating components in agro-industrial machinery by employing just one vibration signal acquired from a single point on the machine chassis. To do so, a Support Vector Machine (SVM)-based system is employed. Experimental tests evaluated this system by acquiring vibration data from a single point of an agricultural harvester, while varying several of its working conditions. The whole process included two major steps. Initially, the vibration data were preprocessed through twelve feature extraction algorithms, after which the Exhaustive Search method selected the most suitable features. Secondly, the SVM-based system accuracy was evaluated by using Leave-One-Out cross-validation, with the selected features as the input data. The results of this study provide evidence that (i) accurate estimation of the status of various rotating components in agro-industrial machinery is possible by processing the vibration signal acquired from a single point on the machine structure; (ii) the vibration signal can be acquired with a uniaxial accelerometer, the orientation of which does not significantly affect the classification accuracy; and, (iii) when using an SVM classifier, an 85% mean cross-validation accuracy can be reached, which only requires a maximum of seven features as its input, and no significant improvements are noted between the use of either nonlinear or linear kernels. PMID:25372618

Ruiz-Gonzalez, Ruben; Gomez-Gil, Jaime; Gomez-Gil, Francisco Javier; Martnez-Martnez, Vctor

2014-01-01

67

Experimental constraints of using slow-light in sodium vapor for light-drag enhanced relative rotation sensing  

NASA Astrophysics Data System (ADS)

We report on experimental observation of electromagnetically induced transparency and slow-light ( vg ? c/607) in atomic sodium vapor, as a potential medium for a recently proposed experiment on slow-light enhanced relative rotation sensing [Shahriar et al. Phys. Rev. Lett. (submitted for publication), http://arxiv.org/abs/quant-ph/0505192.]. We have performed an interferometric measurement of the index variation associated with a two-photon resonance to estimate the dispersion characteristics of the medium that are relevant to the slow-light based rotation sensing scheme. We also show that the presence of counter-propagating pump beams in an optical Sagnac loop produces a backward optical phase conjugation beam that can generate spurious signals, which may complicate the measurement of small rotations in the slow-light enhanced gyroscope. We identify techniques for overcoming this constraint. Conclusions reached from the results presented here will pave the way for designing and carrying out an experiment that will demonstrate the slow-light induced enhancement of rotation sensing.

Tripathi, Renu; Pati, G. S.; Messall, M.; Salit, K.; Shahriar, M. S.

2006-10-01

68

Heat transfer and fluid flow in rotating machinery; Proceedings of the First International Symposium on Transport Phenomena, Honolulu, HI, Apr. 28-May 3, 1985  

SciTech Connect

The present conference considers topics in the fields of turbine blade cooling, flow visualization and measurement, rotating tubes and heat pipes, rotating surfaces and enclosures, and turbine and compressor blades. Attention is given to film cooling in a plane turbine cascade, mist-cooling of high temperature turbines, a flow visualization of the effects of injection hole geometry, LDA measurements within a vortex boundary layer generated in a rotating drum, and the influence of internal axial fins on condensation heat transfer in coaxial rotating heat pipes. Also discussed are heat transfer for flow through simulated labyrinth seals, the cooling of superconducting generators by liquid helium, developing turbulent flow in a square duct, generalized transient rotor thermal stress, waves in rotating liquid films, and flow field determinations at axial pump impeller tip sections.

Yang, W.J.

1987-01-01

69

A method of measuring the three-dimensional mean flow and turbulence quantities inside a rotating turbo-machinery passage. [by hot-wire anemometer  

NASA Technical Reports Server (NTRS)

A method of measuring the three-dimensional components of mean velocity and turbulence quantities within a rotating turbomachinery passage is developed through the use of hot wire anemometry techniques. Equations are derived which, when solved simultaneously and in conjunction with the data obtained from the hot wire anemometer measurements, will provide values for the radial, axial and tangential components of mean velocity, turbulence intensity and turbulence stress within the rotating turbomachinery passage. A three-bladed rocket pump inducer model, operating in air, was used in the experimentation. The method is very accurate and provides very useful information on the characteristics of the flow inside rotor passages hitherto unexplored.

Gorton, C. A.; Lakshminarayana, B.

1975-01-01

70

Towards a rapidly rotating liquid sodium dynamo P. Cardin, D. Brito, D. Jault, H.-C. Nataf, J.-P. Masson  

E-print Network

and Lorentz forces lead to the socalled "magnetostrophic" regime. We derive an estimate of the power needed to sustain the magnetic field in this regime. We show that an experiment with liquid sodium can be designed at a different rotation rate an inner core permeated by a strong magnetic field. We discuss the processes

Boyer, Edmond

71

MACHINERY RESONANCE AND DRILLING  

SciTech Connect

New developments in vibration analysis better explain machinery resonance, through an example of drill bit chattering during machining of rusted steel. The vibration of an operating drill motor was measured, the natural frequency of an attached spring was measured, and the two frequencies were compared to show that the system was resonant. For resonance to occur, one of the natural frequencies of a structural component must be excited by a cyclic force of the same frequency. In this case, the frequency of drill bit chattering due to motor rotation equaled the spring frequency (cycles per second), and the system was unstable. A soft rust coating on the steel to be drilled permitted chattering to start at the drill bit tip, and the bit oscillated on and off of the surface, which increased the wear rate of the drill bit. This resonant condition is typically referred to as a motor critical speed. The analysis presented here quantifies the vibration associated with this particular critical speed problem, using novel techniques to describe resonance.

Leishear, R.; Fowley, M.

2010-01-23

72

Detecting of transient vibration signatures using an improved fast spatial-spectral ensemble kurtosis kurtogram and its applications to mechanical signature analysis of short duration data from rotating machinery  

NASA Astrophysics Data System (ADS)

Detecting transient vibration signatures is of vital importance for vibration-based condition monitoring and fault detection of the rotating machinery. However, raw mechanical signals collected by vibration sensors are generally mixtures of physical vibrations of the multiple mechanical components installed in the examined machinery. Fault-generated incipient vibration signatures masked by interfering contents are difficult to be identified. The fast kurtogram (FK) is a concise and smart gadget for characterizing these vibration features. The multi-rate filter-bank (MRFB) and the spectral kurtosis (SK) indicator of the FK are less powerful when strong interfering vibration contents exist, especially when the FK are applied to vibration signals of short duration. It is encountered that the impulsive interfering contents not authentically induced by mechanical faults complicate the optimal analyzing process and lead to incorrect choosing of the optimal analysis subband, therefore the original FK may leave out the essential fault signatures. To enhance the analyzing performance of FK for industrial applications, an improved version of fast kurtogram, named as "fast spatial-spectral ensemble kurtosis kurtogram", is presented. In the proposed technique, discrete quasi-analytic wavelet tight frame (QAWTF) expansion methods are incorporated as the detection filters. The QAWTF, constructed based on dual tree complex wavelet transform, possesses better vibration transient signature extracting ability and enhanced time-frequency localizability compared with conventional wavelet packet transforms (WPTs). Moreover, in the constructed QAWTF, a non-dyadic ensemble wavelet subband generating strategy is put forward to produce extra wavelet subbands that are capable of identifying fault features located in transition-band of WPT. On the other hand, an enhanced signal impulsiveness evaluating indicator, named "spatial-spectral ensemble kurtosis" (SSEK), is put forward and utilized as the quantitative measure to select optimal analyzing parameters. The SSEK indicator is robuster in evaluating the impulsiveness intensity of vibration signals due to its better suppressing ability of Gaussian noise, harmonics and sporadic impulsive shocks. Numerical validations, an experimental test and two engineering applications were used to verify the effectiveness of the proposed technique. The analyzing results of the numerical validations, experimental tests and engineering applications demonstrate that the proposed technique possesses robuster transient vibration content detecting performance in comparison with the original FK and the WPT-based FK method, especially when they are applied to the processing of vibration signals of relative limited duration.

Chen, BinQiang; Zhang, ZhouSuo; Zi, YanYang; He, ZhengJia; Sun, Chuang

2013-10-01

73

The ESCRT machinery  

PubMed Central

Summary The endosomal sorting complexes required for transport (ESCRT) assemble into a multisubunit machinery that performs a topologically unique membrane bending and scission reaction away from the cytoplasm. This evolutionarily highly conserved process is required for the multivesicular body (MVB) pathway, cytokinesis and HIV budding. The modular setup of the machinery with five distinct ESCRT complexes (ESCRT-0, -I, -II, -III and the Vps4 complex) that have a clear division of tasks from interaction with ubiquitinated membrane proteins to membrane deformation and abscission allows them to be flexibly integrated into these three very different biological processes (Figure 1). PMID:22361144

Schmidt, Oliver; Teis, David

2012-01-01

74

5. INTERIOR VIEW SHOWING GATE OPERATING MACHINERY. NOTE: MACHINERY IS ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. INTERIOR VIEW SHOWING GATE OPERATING MACHINERY. NOTE: MACHINERY IS NOT ORIGINAL. - Old Croton Aqueduct, Mill River Waste Weir, U.S. Route 9 at Sleepy Hollow Cemetery, Tarrytown, Westchester County, NY

75

73. Original engineering drawings sheet 17: Machinery Girders and Machinery ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

73. Original engineering drawings sheet 17: Machinery Girders and Machinery Enclosure. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

76

Stability/Instability Analysis of Rotating Machinery  

NASA Technical Reports Server (NTRS)

Numerical index of stability calculated for nonlinear system. Technique for determining rotor stability or instability from analysis of measurements adapted for use with computer simulations of rotor motion. Involves calculation of log decrement or increment of vibration amplitude. Applicable to rotors mounted in loose bearings and to similar problems in which load-versus-deflection characteristics nonlinear. Developed for assessments of vibrational characteristics of turbopump rotors, technique also usable with such mechanisms as high-speed ball bearings.

Powers, Richard W.

1987-01-01

77

Agriculture Power and Machinery.  

ERIC Educational Resources Information Center

This guide is intended to assist vocational agriculture teachers who are teaching secondary- or postsecondary-level courses in agricultural power and machinery. The materials presented are based on the Arizona validated occupational competencies and tasks for the following occupations: service manager, shop foreman, service technician, and tractor

Rogers, Tom

78

Agriculture Education. Farm Machinery.  

ERIC Educational Resources Information Center

This curriculum guide is designed for group instruction of secondary agricultural education students enrolled in one or two semester-long courses in farm machinery. The guide presents units of study in the following areas: (1) small gas engines, (2) job opportunities, (3) tractors, (4) engines, (5) hydraulics, (6) electrical system, (7) combine

Stuttgart Public Schools, AR.

79

Machinery Vibration Survey Test Report  

E-print Network

Machinery Vibration Survey Test Report UC Berkeley ­ Birge Hall Prepared For: Patrick Macardle Capital Projects 1936 University Ave, 2nd floor Berkeley, CA 94720-1380 Type of Test: Machinery Vibration

Packard, Richard E.

80

30 CFR 57.14204 - Machinery lubrication.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery lubrication. 57.14204 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14204 Machinery lubrication. Machinery or...

2012-07-01

81

30 CFR 57.14204 - Machinery lubrication.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery lubrication. 57.14204 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14204 Machinery lubrication. Machinery or...

2014-07-01

82

30 CFR 56.14204 - Machinery lubrication.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery lubrication. 56.14204 Section...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14204 Machinery lubrication. Machinery or...

2011-07-01

83

30 CFR 57.14204 - Machinery lubrication.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery lubrication. 57.14204 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14204 Machinery lubrication. Machinery or...

2013-07-01

84

30 CFR 57.14204 - Machinery lubrication.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery lubrication. 57.14204 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14204 Machinery lubrication. Machinery or...

2011-07-01

85

30 CFR 56.14204 - Machinery lubrication.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery lubrication. 56.14204 Section...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14204 Machinery lubrication. Machinery or...

2012-07-01

86

30 CFR 56.14204 - Machinery lubrication.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery lubrication. 56.14204 Section...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14204 Machinery lubrication. Machinery or...

2013-07-01

87

30 CFR 56.14204 - Machinery lubrication.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery lubrication. 56.14204 Section...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14204 Machinery lubrication. Machinery or...

2014-07-01

88

30 CFR 57.14204 - Machinery lubrication.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery lubrication. 57.14204 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14204 Machinery lubrication. Machinery or...

2010-07-01

89

30 CFR 56.14204 - Machinery lubrication.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery lubrication. 56.14204 Section...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14204 Machinery lubrication. Machinery or...

2010-07-01

90

Mercury's sodium exosphere  

Microsoft Academic Search

Mercury's neutral sodium exosphere is simulated using a comprehensive 3D Monte Carlo model following sodium atoms ejected from Mercury's surface by thermal desorption, photon stimulated desorption, micro-meteoroid vaporization and solar wind sputtering. The evolution of the sodium surface density with respect to Mercury's rotation and its motion around the Sun is taken into account by considering enrichment processes due to

F. Leblanc; R. E. Johnson

2003-01-01

91

49. Machinery rooms on north tower. Facing north. Machinery rooms ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

49. Machinery rooms on north tower. Facing north. Machinery rooms contain all motors, motor controllers, and gears for operating one span, in this case, the north span. Note bell with continuous operating clapper for use as fog signals. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

92

50. Machinery rooms on south tower. Facing south. Machinery rooms ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

50. Machinery rooms on south tower. Facing south. Machinery rooms contain all motors, motor controllers, and gears for operating one span, in this case, the south span. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

93

Condition monitoring on complex machinery for predictive maintenance and process control  

Microsoft Academic Search

The rotating machinery for engineering process and materials science has become faster and lightweight recently. The machinery has been required to run for longer periods of time and reliable operations. Because machine breakdowns and consequent down times severely affect the productivity of factories or the safety of products and process success depends on the reliability and the efficiency of related

JUAN DAI; C. L. PHILIP CHEN; Xiao-Yan Xu; Peng Hu

2008-01-01

94

Similarity based modeling of time synchronous averaged vibration signals for machinery health monitoring  

Microsoft Academic Search

Monitoring rotating machinery is often accomplished with the aid of vibration sensors. The vibration sensor signals contain a wealth of complex information that characterizes the dynamic behavior of the machinery. Transforming this information into useful knowledge about the health of the machine can be challenging due to the presence of extraneous noise sources and variations in the vibration signal itself.

Stephan W. Wegerich

2004-01-01

95

Fiber optic Fabry-Perot sensor for machinery monitoring  

NASA Astrophysics Data System (ADS)

This paper introduces the application of commercial FFPI (Fiber Fabry-Perot Interferometer) sensors to harsh environmental machinery monitoring (temperature up to 400C). Examples of dynamic pressure, temperature, vibration, rotational speed and bearing condition in engine, pump and bearing application with the multi-sensor operation (same or combination of different kinds of parameters monitoring up to 24 channels) are demonstrated.

Lee, Chung E.

2003-11-01

96

Generalized Theory of Electrical Machinery  

Microsoft Academic Search

In the following pages electrical machinery is analyzed from a new point of view. Analytical quantities like magnetizing current, armature reaction, leakage flux, transient reactance are not introduced; only such quantities are used as actually exist in the machine at one particular load. Thereby the theory of electrical machinery is expressed in terms of the minimum possible number of quantities.

Gabriel Kron

1930-01-01

97

46 CFR 130.450 - Machinery alarms.  

Code of Federal Regulations, 2014 CFR

... 2014-10-01 2014-10-01 false Machinery alarms. 130.450 Section 130.450 Shipping...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.450 Machinery alarms. (a) Each alarm required...

2014-10-01

98

46 CFR 130.450 - Machinery alarms.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 2013-10-01 false Machinery alarms. 130.450 Section 130.450 Shipping...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.450 Machinery alarms. (a) Each alarm required...

2013-10-01

99

46 CFR 130.450 - Machinery alarms.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 2012-10-01 false Machinery alarms. 130.450 Section 130.450 Shipping...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.450 Machinery alarms. (a) Each alarm required...

2012-10-01

100

46 CFR 130.450 - Machinery alarms.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 2011-10-01 false Machinery alarms. 130.450 Section 130.450 Shipping...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.450 Machinery alarms. (a) Each alarm required...

2011-10-01

101

46 CFR 130.450 - Machinery alarms.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 2010-10-01 false Machinery alarms. 130.450 Section 130.450 Shipping...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.450 Machinery alarms. (a) Each alarm required...

2010-10-01

102

Data acquisition in a high-speed rotating frame for New Mexico Institute of Mining and Technology liquid sodium ?? dynamo experiment  

NASA Astrophysics Data System (ADS)

New Mexico Institute of Mining and Technology liquid sodium ??-dynamo experiment models the magnetic field generation in the universe as discussed in detail by Colgate, Li, and Pariev [Phys. Plasmas 8, 2425 (2001)]. To obtain a quasi-laminar flow with magnetic Reynolds number Rm 120, the dynamo experiment consists of two co-axial cylinders of 30.5 cm and 61 cm in diameter spinning up to 70 Hz and 17.5 Hz, respectively. During the experiment, the temperature of the cylinders must be maintained to 110 C to ensure that the sodium remains fluid. This presents a challenge to implement a data acquisition (DAQ) system in such high temperature, high-speed rotating frame, in which the sensors (including 18 Hall sensors, 5 pressure sensors, and 5 temperature sensors, etc.) are under the centrifugal acceleration up to 376g. In addition, the data must be transmitted and stored in a computer 100 ft away for safety. The analog signals are digitized, converted to serial signals by an analog-to-digital converter and a field-programmable gate array. Power is provided through brush/ring sets. The serial signals are sent through ring/shoe sets capacitively, then reshaped with cross-talk noises removed. A microcontroller-based interface circuit is used to decode the serial signals and communicate with the data acquisition computer. The DAQ accommodates pressure up to 1000 psi, temperature up to more than 130 C, and magnetic field up to 1000 G. First physics results have been analyzed and published. The next stage of the ??-dynamo experiment includes the DAQ system upgrade.

Si, Jiahe; Colgate, Stirling A.; Li, Hui; Martinic, Joe; Westpfahl, David

2013-10-01

103

Multirobot inspection of industrial machinery  

E-print Network

Inspection of aircraft and power generation machinery using a swarm of miniature robots is a promising application both from an intellectual and a commercial perspective. Our research is motivated by a case study concerned ...

Correll, Nikolaus

104

The machinery of macroautophagy  

PubMed Central

Autophagy is a primarily degradative pathway that takes place in all eukaryotic cells. It is used for recycling cytoplasm to generate macromolecular building blocks and energy under stress conditions, to remove superfluous and damaged organelles to adapt to changing nutrient conditions and to maintain cellular homeostasis. In addition, autophagy plays a critical role in cytoprotection by preventing the accumulation of toxic proteins and through its action in various aspects of immunity including the elimination of invasive microbes and its participation in antigen presentation. The most prevalent form of autophagy is macroautophagy, and during this process, the cell forms a double-membrane sequestering compartment termed the phagophore, which matures into an autophagosome. Following delivery to the vacuole or lysosome, the cargo is degraded and the resulting macromolecules are released back into the cytosol for reuse. The past two decades have resulted in a tremendous increase with regard to the molecular studies of autophagy being carried out in yeast and other eukaryotes. Part of the surge in interest in this topic is due to the connection of autophagy with a wide range of human pathophysiologies including cancer, myopathies, diabetes and neurodegenerative disease. However, there are still many aspects of autophagy that remain unclear, including the process of phagophore formation, the regulatory mechanisms that control its induction and the function of most of the autophagy-related proteins. In this review, we focus on macroautophagy, briefly describing the discovery of this process in mammalian cells, discussing the current views concerning the donor membrane that forms the phagophore, and characterizing the autophagy machinery including the available structural information. PMID:24366339

Feng, Yuchen; He, Ding; Yao, Zhiyuan; Klionsky, Daniel J

2014-01-01

105

Machinery Safety on the Farm  

NSDL National Science Digital Library

Machinery Safety on the Farm is an online publication designed for Virginia Tech students and instructors that provides an overview of various aspects of maintaining safety in a farm setting. The document highlights common hazards in machinery, complete with diagrams and descriptions for each type; then delves into the various precautions necessary to avoid accidents involving the aforementioned problem areas. The article is available as the html page, or as an optional pdf at the bottom of the page.

Grisso, Robert

106

46 CFR 169.241 - Machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery. 169.241 Section 169.241 Shipping...Certification Inspections 169.241 Machinery. (a) At each inspection for...visually examined. (3) Auxiliary machinery. All machinery essential to the...

2011-10-01

107

46 CFR 169.241 - Machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery. 169.241 Section 169.241 Shipping...Certification Inspections 169.241 Machinery. (a) At each inspection for...visually examined. (3) Auxiliary machinery. All machinery essential to the...

2010-10-01

108

46 CFR 169.241 - Machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery. 169.241 Section 169.241 Shipping...Certification Inspections 169.241 Machinery. (a) At each inspection for...visually examined. (3) Auxiliary machinery. All machinery essential to the...

2012-10-01

109

46 CFR 169.241 - Machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery. 169.241 Section 169.241 Shipping...Certification Inspections 169.241 Machinery. (a) At each inspection for...visually examined. (3) Auxiliary machinery. All machinery essential to the...

2013-10-01

110

46 CFR 169.241 - Machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Machinery. 169.241 Section 169.241 Shipping...Certification Inspections 169.241 Machinery. (a) At each inspection for...visually examined. (3) Auxiliary machinery. All machinery essential to the...

2014-10-01

111

Tractor & Machinery Safety. 1984 Revision.  

ERIC Educational Resources Information Center

This curriculum guide is intended for use in teaching an instructional unit in tractor and machinery safety that is geared toward college freshmen. Addressed in the individual lessons of the unit are the following topics: understanding the importance of safe and efficient tractor operation, understanding the characteristics of tractors, preparing

Montana State Office of Public Instruction, Helena. Dept. of Vocational Education Services.

112

Leasing vs. Buying Farm Machinery  

E-print Network

Leasing vs. Buying Farm Machinery Risk Management E-571 RM5-4.0 06-09 *Professor and Extension Economist?Management and Extension Program Specialist III? Economic Accoutability, The Texas A&M System. Equipment leasing has gained favor...

Klinefelter, Danny A.; McCorkle, Dean

2009-06-01

113

Simulation of Symmetrical Induction Machinery  

Microsoft Academic Search

The effectiveness of an analog computer in studying the performance of induction machinery is demonstrated with computer results which show the dynamic behavior of 2-phase and 3-phase machines during balanced and unbalanced operation. The computer simulation for these various modes of operation is conveniently obtained from the equations which describe the symmetrical induction machine in an arbitrary reference frame. Of

P. C. Krause; C. H. Thomas

1965-01-01

114

46 CFR 176.804 - Machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery. 176.804 Section 176.804 Shipping... Material Inspections 176.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2010-10-01

115

VEHICLES, MACHINERY AND EQUIPMENT Table Of Contents  

E-print Network

EM 385-1-1 XX Sep 13 i Section 18 VEHICLES, MACHINERY AND EQUIPMENT Table Of Contents Section: Page...................................................................18-16 18.G Machinery And Mechanized Equipment.........................18-16 18.H Drilling Equipment......................................................18-37 #12;EM 385-1-1 XX Sep 13 18-1 SECTION 18 VEHICLES, MACHINERY AND EQUIPMENT 18.A GENERAL 18.A.01

US Army Corps of Engineers

116

46 CFR 115.804 - Machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery. 115.804 Section 115.804 Shipping... Material Inspections 115.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2012-10-01

117

46 CFR 115.804 - Machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery. 115.804 Section 115.804 Shipping... Material Inspections 115.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2013-10-01

118

46 CFR 115.804 - Machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Machinery. 115.804 Section 115.804 Shipping... Material Inspections 115.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2014-10-01

119

46 CFR 115.804 - Machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery. 115.804 Section 115.804 Shipping... Material Inspections 115.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2011-10-01

120

46 CFR 176.804 - Machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Machinery. 176.804 Section 176.804 Shipping... Material Inspections 176.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2014-10-01

121

46 CFR 176.804 - Machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery. 176.804 Section 176.804 Shipping... Material Inspections 176.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2012-10-01

122

46 CFR 115.804 - Machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery. 115.804 Section 115.804 Shipping... Material Inspections 115.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2010-10-01

123

46 CFR 176.804 - Machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery. 176.804 Section 176.804 Shipping... Material Inspections 176.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2013-10-01

124

The Protein Import Machinery of Mitochondria*  

E-print Network

The Protein Import Machinery of Mitochondria* Published, JBC Papers in Press, February 18, 2004 they must be imported into the organelle. The mitochon- drial membranes contain specific machineries of the intermembrane space and the protein insertion machinery of the inner membrane (carrier translocase, TIM22

Economou, Tassos

125

46 CFR 176.804 - Machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery. 176.804 Section 176.804 Shipping... Material Inspections 176.804 Machinery. At each initial and subsequent...have the vessel ready for inspections of machinery, fuel, and piping systems,...

2011-10-01

126

46 CFR 58.01-35 - Main propulsion auxiliary machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Main propulsion auxiliary machinery. 58.01-35 Section 58.01-35...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements...01-35 Main propulsion auxiliary machinery. Auxiliary machinery vital...

2012-10-01

127

46 CFR 58.01-25 - Means of stopping machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Means of stopping machinery. 58.01-25 Section 58.01-25...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-25 Means of stopping machinery. Machinery driving...

2013-10-01

128

46 CFR 58.01-25 - Means of stopping machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Means of stopping machinery. 58.01-25 Section 58.01-25...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-25 Means of stopping machinery. Machinery driving...

2012-10-01

129

46 CFR 58.01-35 - Main propulsion auxiliary machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Main propulsion auxiliary machinery. 58.01-35 Section 58.01-35...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements...01-35 Main propulsion auxiliary machinery. Auxiliary machinery vital...

2013-10-01

130

46 CFR 58.01-35 - Main propulsion auxiliary machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Main propulsion auxiliary machinery. 58.01-35 Section 58.01-35...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements...01-35 Main propulsion auxiliary machinery. Auxiliary machinery vital...

2011-10-01

131

46 CFR 58.01-25 - Means of stopping machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Means of stopping machinery. 58.01-25 Section 58.01-25...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-25 Means of stopping machinery. Machinery driving...

2011-10-01

132

46 CFR 58.01-35 - Main propulsion auxiliary machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Main propulsion auxiliary machinery. 58.01-35 Section 58.01-35...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements...01-35 Main propulsion auxiliary machinery. Auxiliary machinery vital...

2010-10-01

133

46 CFR 58.01-25 - Means of stopping machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Means of stopping machinery. 58.01-25 Section 58.01-25...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-25 Means of stopping machinery. Machinery driving...

2010-10-01

134

5. FIRST FLOOR INTERIOR, NITROGEN MACHINERY, MACHINERY ROOM (SEE N4) ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. FIRST FLOOR INTERIOR, NITROGEN MACHINERY, MACHINERY ROOM (SEE N-4) FROM EASTERN ENTRANCE, LOOKING EAST. - Oakland Naval Supply Center, Cold Storage Warehouse, South of C Street between First & Second Street, Oakland, Alameda County, CA

135

Dietary Sodium  

MedlinePLUS

Table salt is made up of the elements sodium and chlorine - the technical name for salt is sodium chloride. Your body needs some sodium to work properly. ... to healthy eating is choosing foods low in salt and sodium. Doctors recommend you eat less than ...

136

46 CFR 30.10-42 - Machinery space-TB/ALL.  

Code of Federal Regulations, 2010 CFR

...machinery space means any space that contains machinery and...including Category A machinery spaces, propelling machinery...electrical machinery, oil filling stations, refrigeration, stabilizing...conditioning machinery, and similar spaces and trunks to such...

2010-10-01

137

46 CFR 30.10-42 - Machinery space-TB/ALL.  

Code of Federal Regulations, 2012 CFR

...machinery space means any space that contains machinery and...including Category A machinery spaces, propelling machinery...electrical machinery, oil filling stations, refrigeration, stabilizing...conditioning machinery, and similar spaces and trunks to such...

2012-10-01

138

46 CFR 30.10-42 - Machinery space-TB/ALL.  

Code of Federal Regulations, 2011 CFR

...machinery space means any space that contains machinery and...including Category A machinery spaces, propelling machinery...electrical machinery, oil filling stations, refrigeration, stabilizing...conditioning machinery, and similar spaces and trunks to such...

2011-10-01

139

46 CFR 30.10-42 - Machinery space-TB/ALL.  

Code of Federal Regulations, 2013 CFR

...machinery space means any space that contains machinery and...including Category A machinery spaces, propelling machinery...electrical machinery, oil filling stations, refrigeration, stabilizing...conditioning machinery, and similar spaces and trunks to such...

2013-10-01

140

46 CFR 30.10-42 - Machinery space-TB/ALL.  

Code of Federal Regulations, 2014 CFR

...machinery space means any space that contains machinery and...including Category A machinery spaces, propelling machinery...electrical machinery, oil filling stations, refrigeration, stabilizing...conditioning machinery, and similar spaces and trunks to such...

2014-10-01

141

Controlled-Torque Starting of Textile Machinery  

Microsoft Academic Search

Control of the starting torque of textile machinery drives has become an important factor in the effective performance of textile machinery. Increased operating speeds to achieve greater production requires more precise acceleration of machine components to ensure efficient operation. Controlled acceleration also eliminates premature failure of the machine elements. Many factors must be considered in determining the optimum system for

W. Harvey Darke; Harold L. Prescott

1971-01-01

142

LOW BACK PAIN IN PORT MACHINERY OPERATORS  

Microsoft Academic Search

The occurrence of several types of low back pain (LBP) was investigated by a standardized questionnaire in a group of 219 port machinery operators exposed to whole-body vibration (WBV) and postural load and in a control group of 85 maintenance workers employed at the same transport company. The group of port machinery operators included 85 straddle carrier drivers, 88 fork-lift

M. Bovenzi; I. Pinto; N. Stacchini

2002-01-01

143

Involvement of Cellular Proteolytic Machinery in Apoptosis  

Microsoft Academic Search

Programmed cell death (PCD), a genetically controlled cell deletion process, plays an important role in the regulation of cellular and tissue homeostasis. The requisite for proteolysis during PCD-induced apoptosis is well documented. The cellular proteolytic machinery includes numerous proteases localized in membranes, cytoplasm, and nucleus. This machinery may function to remove denatured or misfolded protein from the cytoplasm on a

Boris Zhivotovsky; David H. Burgess; Daina M. Vanags; Sten Orrenius

1997-01-01

144

International Plowing Match & Farm Machinery Show  

NSDL National Science Digital Library

The 1995 International Plowing Match & Farm Machinery Show in Ontario, Canada has a site of the Web. The IPM is a non-profit organization of volunteers which annually organizes Canada's largest farm machinery show. The event is commercial and educational. Thousands of school children and educators attend and participate in organized educational activities.

145

46 CFR 62.50-30 - Additional requirements for periodically unattended machinery plants.  

Code of Federal Regulations, 2011 CFR

...requirements for periodically unattended machinery plants. 62.50-30 Section 62...requirements for periodically unattended machinery plants. Note: Periodically unattended machinery plants include machinery...

2011-10-01

146

46 CFR 62.50-30 - Additional requirements for periodically unattended machinery plants.  

Code of Federal Regulations, 2010 CFR

...requirements for periodically unattended machinery plants. 62.50-30 Section 62...requirements for periodically unattended machinery plants. Note: Periodically unattended machinery plants include machinery...

2010-10-01

147

46 CFR 62.50-30 - Additional requirements for periodically unattended machinery plants.  

Code of Federal Regulations, 2013 CFR

...requirements for periodically unattended machinery plants. 62.50-30 Section 62...requirements for periodically unattended machinery plants. Note: Periodically unattended machinery plants include machinery...

2013-10-01

148

46 CFR 62.50-30 - Additional requirements for periodically unattended machinery plants.  

Code of Federal Regulations, 2012 CFR

...requirements for periodically unattended machinery plants. 62.50-30 Section 62...requirements for periodically unattended machinery plants. Note: Periodically unattended machinery plants include machinery...

2012-10-01

149

Active vibration control of rotating machinery using piezoelectric pushers  

E-print Network

0 0 6L1 2L' 0 0 0 0 12 -6L, ? 6L2 4L. ? 12 ? 6LI 0 0 12 ? 6L1 0 0 Xj O, j Yj Xj~g Owe+1 1 j+1 8u j+r The mass matrix for each inertia station can be represented as the 4x4 matrix: 32 M'?, M~r ~M'n M M~x M r k Ms M~, M~ k xx Fig. 3... (figure 2. 3) FLEXIBLE CASING CA K A KA FLEXIBLE CASING CB MPB XC A5 RA6 Vg MB ACTIVE STIFFNESS KB (Xg ? XC)=XREL ACTIVE DAMPING IIDS~ RAZ I D 1 c RA1 A C GHpF V7 GPS V4 V 3 V5 A3 A4 GPD I I I I I I BL R R R 3 R4 C4 g RFg R...

Barrett, Timothy Stuart

1992-01-01

150

Piezoelectric pushers for active vibration control of rotating machinery  

NASA Technical Reports Server (NTRS)

The active control of rotordynamic vibrations and stability by magnetic bearings and electromagnetic shakers have been discussed extensively in the literature. These devices, though effective, are usually large in volume and add significant weight to the stator. The use of piezoelectric pushers may provide similar degrees of effectiveness in light, compact packages. Tests are currently being conducted with piezoelectric pusher-based active vibration control. Results from tests performed on NASA test rigs as preliminary verification of the related theory are presented.

Palazzolo, Alan B.; Kascak, Albert F.

1988-01-01

151

Heat transfer and fluid flow in rotating machinery  

Microsoft Academic Search

This book consists of six parts. Blade cooling, in Part 1, is one subject that interests thermal science researchers and includes both external surface cooling and internal cooling. The state-of-the-art review on turbine blade cooling is thorough and impressive. Major efforts are also directed toward various aspects of film cooling and heat transfer enhancement in internal convection. Part 2 covers

W.-J. Yang

1987-01-01

152

A novel procedure for diagnosing multiple faults in rotating machinery.  

PubMed

In analyzing signals from a wind turbine gearbox this paper suggests a new signal processing procedure named as CMF-EEMD method which is formed by applying conventional EEMD to a new type of combined mode function (CMF). This CMF consists of a low frequency CMF, denoted as CL, and a high frequency CMF, denoted as Ch. Then it optimizes the amplitude of the added noise in decomposing Ch and CL using EEMD. Finally, it calculates cyclic autocorrelation function (CAF) for every characteristic IMF from EEMD. The proposed procedure is applied to analyze the multi-faults of a wind turbine gearbox and the results confirm better performances in resolving different signal components by the proposed method than that from the cyclic autocorrelation function (CAF) of a direct EEMD analysis. PMID:25440946

Wang, Zhijian; Han, Zhennan; Gu, Fengshou; Gu, James Xi; Ning, Shaohui

2015-03-01

153

Piezoelectric pushers for active vibration control of rotating machinery  

NASA Technical Reports Server (NTRS)

The active control of rotordynamic vibrations and stability by magnetic bearings and electromagnetic shakers have been discussed extensively in the literature. These devices, though effective, are usually large in volume and add significant weight to the stator. The use of piezoelectric pushers may provide similar degrees of effectiveness in light, compact packages. Tests are currently being conducted with piezoelectric pusher-based active vibration control. Results from tests performed on NASA test rigs as preliminary verification of the related theory are presented.

Palazzolo, A. B.; Lin, R. R.; Alexander, R. M.; Kascak, A. F.; Montague, J.

1989-01-01

154

The response of rotating machinery to external random vibration  

NASA Technical Reports Server (NTRS)

A high-speed turbogenerator employing gas-lubricated hydrodynamic journal and thrust bearings was subjected to external random vibrations for the purpose of assessing bearing performance in a dynamic environment. The pivoted-pad type journal bearings and the step-sector thrust bearing supported a turbine-driven rotor weighing approximately twenty-one pounds at a nominal operating speed of 36,000 rpm. The response amplitudes of both the rigid-supported and flexible-supported bearing pads, the gimballed thrust bearing, and the rotor relative to the machine casing were measured with capacitance type displacement probes. Random vibrations were applied by means of a large electrodynamic shaker at input levels ranging between 0.5 g (rms) and 1.5 g (rms). Vibrations were applied both along and perpendicular to the rotor axis. Response measurements were analyzed for amplitude distribution and power spectral density. Experimental results compare well with calculations of amplitude power spectral density made for the case where the vibrations were applied along the rotor axis. In this case, the rotor-bearing system was treated as a linear, three-mass model.

Tessarzik, J. M.; Chiang, T.; Badgley, R. H.

1974-01-01

155

Piezoelectric pushers for active vibration control of rotating machinery  

NASA Technical Reports Server (NTRS)

The active control of rotordynamic vibrations and stability by magnetic bearings and electromagnetic shakers was discussed extensively in the literature. These devices, though effective, are usually large in volume and add significant weight to the stator. The use of piezoelectric pushers may provide similar degrees of effectiveness in light, compact packages. Analyses are contained which extend quadratic regulator, pole placement and derivative feedback control methods to the prescribed displacement character of piezoelectric pushers. The structural stiffness of the pusher is also included in the theory. Tests are currently being conducted at NASA Lewis Research Center with piezoelectric pusher-based active vibration control. Results performed on the NASA test rig as preliminary verification of the related theory are presented.

Palazzolo, A. B.; Kascak, A. F.; Lin, R. R.; Montague, J.; Alexander, R. M.

1989-01-01

156

Improved system for measuring speed of rotating machinery  

NASA Technical Reports Server (NTRS)

Gear designed with spaces for 61 or 62 teeth but having 1- or 2-tooth gap provides reference point that can be detected electronically and retains convenient count of 60 per revolution obviating need for duplicate electronic equipment.

Smith, E. G.

1972-01-01

157

46 CFR 58.01-35 - Main propulsion auxiliary machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Main propulsion auxiliary machinery. 58.01-35...Requirements 58.01-35 Main propulsion auxiliary machinery. Auxiliary machinery vital to the main propulsion system must be provided in...

2014-10-01

158

46 CFR 58.01-50 - Machinery space, noise.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery space, noise. 58.01-50 Section...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-50 Machinery space, noise. (a)...

2013-10-01

159

29 CFR 1910.215 - Abrasive wheel machinery.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Abrasive wheel machinery. 1910.215 Section 1910.215...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.215 Abrasive wheel machinery. (a) General requirements...

2012-07-01

160

46 CFR 185.352 - Ventilation of gasoline machinery spaces.  

Code of Federal Regulations, 2013 CFR

... false Ventilation of gasoline machinery spaces. 185.352 Section 185...185.352 Ventilation of gasoline machinery spaces. The mechanical exhaust for the ventilation of a gasoline machinery space, required by ...

2013-10-01

161

46 CFR 174.195 - Bulkheads in machinery spaces.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Bulkheads in machinery spaces. 174.195 Section 174.195...Supply Vessels 174.195 Bulkheads in machinery spaces. (a) The bulkhead in each machinery space of each OSV must be watertight...

2012-10-01

162

29 CFR 1910.213 - Woodworking machinery requirements.  

Code of Federal Regulations, 2012 CFR

... 2012-07-01 false Woodworking machinery requirements. 1910.213 Section...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.213 Woodworking machinery requirements. (a) Machine...

2012-07-01

163

29 CFR 1910.213 - Woodworking machinery requirements.  

Code of Federal Regulations, 2014 CFR

... 2014-07-01 false Woodworking machinery requirements. 1910.213 Section...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.213 Woodworking machinery requirements. (a) Machine...

2014-07-01

164

46 CFR 111.103-3 - Machinery space ventilation.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery space ventilation. 111.103-3 Section...Remote Stopping Systems 111.103-3 Machinery space ventilation. (a) Each machinery space ventilation system must have...

2012-10-01

165

29 CFR 1910.213 - Woodworking machinery requirements.  

Code of Federal Regulations, 2011 CFR

... 2011-07-01 false Woodworking machinery requirements. 1910.213 Section...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.213 Woodworking machinery requirements. (a) Machine...

2011-07-01

166

29 CFR 1910.213 - Woodworking machinery requirements.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Woodworking machinery requirements. 1910.213 Section...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.213 Woodworking machinery requirements. (a) Machine...

2013-07-01

167

30 CFR 56.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery, equipment, and tools. 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14205 Machinery, equipment, and tools....

2013-07-01

168

46 CFR 58.01-50 - Machinery space, noise.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery space, noise. 58.01-50 Section...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-50 Machinery space, noise. (a)...

2012-10-01

169

30 CFR 56.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery, equipment, and tools. 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14205 Machinery, equipment, and tools....

2014-07-01

170

46 CFR 174.195 - Bulkheads in machinery spaces.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Bulkheads in machinery spaces. 174.195 Section 174.195...Supply Vessels 174.195 Bulkheads in machinery spaces. (a) The bulkhead in each machinery space of each OSV must be watertight...

2010-10-01

171

46 CFR 58.01-40 - Machinery, angles of inclination.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery, angles of inclination. 58.01-40...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-40 Machinery, angles of inclination. (a)...

2010-10-01

172

29 CFR 1915.164 - Ship's propulsion machinery.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Ship's propulsion machinery. 1915.164 Section 1915.164...STANDARDS FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems 1915.164 Ship's propulsion machinery. (a) Before work is...

2014-07-01

173

46 CFR 111.103-3 - Machinery space ventilation.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery space ventilation. 111.103-3 Section...Remote Stopping Systems 111.103-3 Machinery space ventilation. (a) Each machinery space ventilation system must have...

2013-10-01

174

30 CFR 57.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery, equipment, and tools. 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14205 Machinery, equipment, and tools....

2013-07-01

175

30 CFR 57.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery, equipment, and tools. 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14205 Machinery, equipment, and tools....

2014-07-01

176

46 CFR 58.01-45 - Machinery space, ventilation.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery space, ventilation. 58.01-45...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-45 Machinery space, ventilation. Each...

2013-10-01

177

46 CFR 58.01-45 - Machinery space, ventilation.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery space, ventilation. 58.01-45...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-45 Machinery space, ventilation. Each...

2010-10-01

178

46 CFR 58.20-15 - Installation of refrigerating machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Installation of refrigerating machinery. 58.20-15 Section 58.20-15... MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS Refrigeration Machinery 58.20-15 Installation of...

2013-10-01

179

46 CFR 111.103-3 - Machinery space ventilation.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery space ventilation. 111.103-3 Section...Remote Stopping Systems 111.103-3 Machinery space ventilation. (a) Each machinery space ventilation system must have...

2011-10-01

180

29 CFR 1915.164 - Ship's propulsion machinery.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Ship's propulsion machinery. 1915.164 Section 1915.164...STANDARDS FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems 1915.164 Ship's propulsion machinery. (a) Before work is...

2013-07-01

181

46 CFR 174.195 - Bulkheads in machinery spaces.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 false Bulkheads in machinery spaces. 174.195 Section 174.195...Supply Vessels 174.195 Bulkheads in machinery spaces. (a) The bulkhead in each machinery space of each OSV must be watertight...

2013-10-01

182

46 CFR 111.103-3 - Machinery space ventilation.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery space ventilation. 111.103-3 Section...Remote Stopping Systems 111.103-3 Machinery space ventilation. (a) Each machinery space ventilation system must have...

2010-10-01

183

46 CFR 130.460 - Placement of machinery alarms.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Placement of machinery alarms. 130.460 Section 130.460...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.460 Placement of machinery alarms. (a) Visible and audible...

2014-10-01

184

29 CFR 1910.213 - Woodworking machinery requirements.  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Woodworking machinery requirements. 1910.213 Section...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.213 Woodworking machinery requirements. (a) Machine...

2010-07-01

185

46 CFR 185.352 - Ventilation of gasoline machinery spaces.  

Code of Federal Regulations, 2014 CFR

... false Ventilation of gasoline machinery spaces. 185.352 Section 185...185.352 Ventilation of gasoline machinery spaces. The mechanical exhaust for the ventilation of a gasoline machinery space, required by ...

2014-10-01

186

29 CFR 1915.164 - Ship's propulsion machinery.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Ship's propulsion machinery. 1915.164 Section 1915.164...STANDARDS FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems 1915.164 Ship's propulsion machinery. (a) Before work is...

2010-07-01

187

46 CFR 58.20-15 - Installation of refrigerating machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Installation of refrigerating machinery. 58.20-15 Section 58.20-15... MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS Refrigeration Machinery 58.20-15 Installation of...

2012-10-01

188

46 CFR 58.01-20 - Machinery guards.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery guards. 58.01-20 Section 58...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-20 Machinery guards. Gears, couplings,...

2012-10-01

189

29 CFR 1910.215 - Abrasive wheel machinery.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Abrasive wheel machinery. 1910.215 Section 1910.215...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.215 Abrasive wheel machinery. (a) General requirements...

2013-07-01

190

46 CFR 130.460 - Placement of machinery alarms.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Placement of machinery alarms. 130.460 Section 130.460...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.460 Placement of machinery alarms. (a) Visible and audible...

2012-10-01

191

30 CFR 56.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery, equipment, and tools. 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14205 Machinery, equipment, and tools....

2012-07-01

192

30 CFR 57.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery, equipment, and tools. 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14205 Machinery, equipment, and tools....

2011-07-01

193

29 CFR 1910.215 - Abrasive wheel machinery.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Abrasive wheel machinery. 1910.215 Section 1910.215...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.215 Abrasive wheel machinery. (a) General requirements...

2011-07-01

194

46 CFR 185.352 - Ventilation of gasoline machinery spaces.  

Code of Federal Regulations, 2011 CFR

... false Ventilation of gasoline machinery spaces. 185.352 Section 185...185.352 Ventilation of gasoline machinery spaces. The mechanical exhaust for the ventilation of a gasoline machinery space, required by ...

2011-10-01

195

46 CFR 185.352 - Ventilation of gasoline machinery spaces.  

Code of Federal Regulations, 2012 CFR

... false Ventilation of gasoline machinery spaces. 185.352 Section 185...185.352 Ventilation of gasoline machinery spaces. The mechanical exhaust for the ventilation of a gasoline machinery space, required by ...

2012-10-01

196

29 CFR 1910.215 - Abrasive wheel machinery.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Abrasive wheel machinery. 1910.215 Section 1910.215...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.215 Abrasive wheel machinery. (a) General requirements...

2010-07-01

197

46 CFR 58.01-45 - Machinery space, ventilation.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery space, ventilation. 58.01-45...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-45 Machinery space, ventilation. Each...

2012-10-01

198

30 CFR 56.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery, equipment, and tools. 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14205 Machinery, equipment, and tools....

2011-07-01

199

29 CFR 1915.164 - Ship's propulsion machinery.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Ship's propulsion machinery. 1915.164 Section 1915.164...STANDARDS FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems 1915.164 Ship's propulsion machinery. (a) Before work is...

2011-07-01

200

30 CFR 57.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery, equipment, and tools. 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14205 Machinery, equipment, and tools....

2012-07-01

201

46 CFR 130.460 - Placement of machinery alarms.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Placement of machinery alarms. 130.460 Section 130.460...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.460 Placement of machinery alarms. (a) Visible and audible...

2013-10-01

202

46 CFR 111.103-3 - Machinery space ventilation.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Machinery space ventilation. 111.103-3 Section...Remote Stopping Systems 111.103-3 Machinery space ventilation. (a) Each machinery space ventilation system must have...

2014-10-01

203

46 CFR 185.352 - Ventilation of gasoline machinery spaces.  

Code of Federal Regulations, 2010 CFR

... false Ventilation of gasoline machinery spaces. 185.352 Section 185...185.352 Ventilation of gasoline machinery spaces. The mechanical exhaust for the ventilation of a gasoline machinery space, required by ...

2010-10-01

204

29 CFR 1915.164 - Ship's propulsion machinery.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Ship's propulsion machinery. 1915.164 Section 1915.164...STANDARDS FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems 1915.164 Ship's propulsion machinery. (a) Before work is...

2012-07-01

205

46 CFR 130.460 - Placement of machinery alarms.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Placement of machinery alarms. 130.460 Section 130.460...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.460 Placement of machinery alarms. (a) Visible and audible...

2010-10-01

206

46 CFR 130.460 - Placement of machinery alarms.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Placement of machinery alarms. 130.460 Section 130.460...EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces 130.460 Placement of machinery alarms. (a) Visible and audible...

2011-10-01

207

46 CFR 174.195 - Bulkheads in machinery spaces.  

Code of Federal Regulations, 2014 CFR

... 2014-10-01 false Bulkheads in machinery spaces. 174.195 Section 174.195...Supply Vessels 174.195 Bulkheads in machinery spaces. (a) The bulkhead in each machinery space of each OSV must be watertight...

2014-10-01

208

46 CFR 58.20-15 - Installation of refrigerating machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Installation of refrigerating machinery. 58.20-15 Section 58.20-15... MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS Refrigeration Machinery 58.20-15 Installation of...

2010-10-01

209

46 CFR 58.01-20 - Machinery guards.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery guards. 58.01-20 Section 58...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-20 Machinery guards. Gears, couplings,...

2013-10-01

210

Costs of Owning and Operating Farm Machinery in the  

E-print Network

Costs of Owning and Operating Farm Machinery in the Pacific Northwest: 2011 by Kathleen Painter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Machinery Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Ownership Machinery cost projections . . . . . . . . . . . . . . . . . . . . . . . . .6 Adjusting costs to fit your

O'Laughlin, Jay

211

46 CFR 58.20-15 - Installation of refrigerating machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Installation of refrigerating machinery. 58.20-15 Section 58.20-15... MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS Refrigeration Machinery 58.20-15 Installation of...

2011-10-01

212

46 CFR 58.01-20 - Machinery guards.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery guards. 58.01-20 Section 58...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-20 Machinery guards. Gears, couplings,...

2010-10-01

213

46 CFR 58.01-40 - Machinery, angles of inclination.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery, angles of inclination. 58.01-40...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-40 Machinery, angles of inclination. (a)...

2013-10-01

214

46 CFR 174.195 - Bulkheads in machinery spaces.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Bulkheads in machinery spaces. 174.195 Section 174.195...Supply Vessels 174.195 Bulkheads in machinery spaces. (a) The bulkhead in each machinery space of each OSV must be watertight...

2011-10-01

215

29 CFR 1910.215 - Abrasive wheel machinery.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Abrasive wheel machinery. 1910.215 Section 1910.215...OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding 1910.215 Abrasive wheel machinery. (a) General requirements...

2014-07-01

216

46 CFR 58.01-50 - Machinery space, noise.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery space, noise. 58.01-50 Section...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-50 Machinery space, noise. (a)...

2011-10-01

217

46 CFR 58.01-20 - Machinery guards.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery guards. 58.01-20 Section 58...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-20 Machinery guards. Gears, couplings,...

2011-10-01

218

46 CFR 58.01-45 - Machinery space, ventilation.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery space, ventilation. 58.01-45...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-45 Machinery space, ventilation. Each...

2011-10-01

219

46 CFR 58.01-50 - Machinery space, noise.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery space, noise. 58.01-50 Section...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-50 Machinery space, noise. (a)...

2010-10-01

220

30 CFR 57.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery, equipment, and tools. 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 57.14205 Machinery, equipment, and tools....

2010-07-01

221

30 CFR 56.14205 - Machinery, equipment, and tools.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery, equipment, and tools. 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Machinery and Equipment Safety Practices...Operational Procedures 56.14205 Machinery, equipment, and tools....

2010-07-01

222

46 CFR 58.01-40 - Machinery, angles of inclination.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery, angles of inclination. 58.01-40...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-40 Machinery, angles of inclination. (a)...

2012-10-01

223

46 CFR 58.01-40 - Machinery, angles of inclination.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery, angles of inclination. 58.01-40...MARINE ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS General Requirements 58.01-40 Machinery, angles of inclination. (a)...

2011-10-01

224

Sodium Phosphate  

MedlinePLUS

Sodium phosphate is used in adults 18 years of age or older to empty the colon (large intestine, ... clear view of the walls of the colon. Sodium phosphate is in a class of medications called saline ...

225

33. Photocopy of photograph. ORIGINAL SULLIVAN MACHINERY BUILDING. VIEW LOOKING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

33. Photocopy of photograph. ORIGINAL SULLIVAN MACHINERY BUILDING. VIEW LOOKING NORTH, circa 1888. - Sullivan Machinery Company, Main Street between Pearl & Water Streets, Claremont, Sullivan County, NH

226

NAVIGATION OF CONSTRUCTION AND AGRICULTURE MACHINERY Werner Stempfhuber  

E-print Network

NAVIGATION OF CONSTRUCTION AND AGRICULTURE MACHINERY Werner Stempfhuber Swiss Federal Institute and agriculture. The guidance or control of heavy machinery demands a navigation sensor with an appropriate

227

34. Photocopy of photograph. ORIGINAL SULLIVAN MACHINERY BUILDING, VIEW LOOKING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

34. Photocopy of photograph. ORIGINAL SULLIVAN MACHINERY BUILDING, VIEW LOOKING EAST, circa 1888 - Sullivan Machinery Company, Main Street between Pearl & Water Streets, Claremont, Sullivan County, NH

228

Vote: The Machinery of Democracy  

NSDL National Science Digital Library

Always one with a timely exhibition that reflects both historical concerns and issues of immediate expediency, the Smithsonian National Museum of American History has created this website as the online incarnation of one of their current exhibits, ??Vote: The Machinery of Democracy?. Through a host of relevant items (such as one of the controversial butterfly ballots used in Palm Beach County, Florida, in 2000), the exhibit ??examines how Americans have historically adopted improved voting techniques as a result of the political, social and technological changes in the country.? The exhibit is divided into nine well-crafted sections, which includes informative retrospectives on the use of paper ballots, the variety of ways in which voters can cast their ballots, and of course, on the fractious situation of the Florida recount of 2000. A final bonus on the site is the thorough bibliography, which includes books, articles, a number of web links, and a few extra webpages on voting technology.

229

Sodium Bicarbonate  

MedlinePLUS

Sodium bicarbonate comes as a tablet and powder to take by mouth. Sodium bicarbonate is taken one to four times a day, depending on the reason you ... flecainide (Tambocor), iron, ketoconazole (Nizoral), lithium (Eskalith, ... Urex), methotrexate, quinidine, sulfa-containing antibiotics, tetracycline ( ...

230

Sodium Test  

MedlinePLUS

... irrationally, and coma or convulsions if the sodium level rises to extremely high concentrations. In rare cases, hypernatremia may be due to Cushing syndrome or a condition caused by too little ADH ... association with blood levels. The body normally excretes excess sodium, so the ...

231

The Machinery of Mitochondrial Inheritance and Behavior  

NSDL National Science Digital Library

The distribution of mitochondria to daughter cells during cell division is an essential feature of cell proliferation. Until recently, it was commonly believed that inheritance of mitochondria and other organelles was a passive process, a consequence of their random diffusion throughout the cytoplasm. A growing recognition of the reticular morphology of mitochondria in many living cells, the association of mitochondria with the cytoskeleton, and the coordinated movements of mitochondria during cellular division and differentiation has illuminated the necessity for a cellular machinery that mediates mitochondrial behavior. Characterization of the underlying molecular components of this machinery is providing insight into mechanisms regulating mitochondrial morphology and distribution.

Michael Yaffe (University of California; Department of Biology)

1999-03-05

232

Liquid sodium model of Earth's outer core  

Microsoft Academic Search

Convective motions in Earth's outer core are responsible for the generation of the geomagnetic field. We present liquid sodium convection experiments in a spherical vessel, designed to model the convective state of Earth's outer core. Heat transfer, zonal fluid velocities, and properties of temperature fluctuations were measured for different rotation rates O and temperature drops DeltaT across the convecting sodium.

Woodrow Shew

2004-01-01

233

A Liquid Sodium ? ? Dynamo Experiment  

NASA Astrophysics Data System (ADS)

A Liquid Sodium ? ? Dynamo Experiment; Stirling Colgate, Howard Beckley, Hui Li, Richard Sonnenfeld, Dave Westpfahl, Ian Bentley, Rocky Ginanni, Travis Mckinnly, and Valadimir Pariev, LANL, NMIMT, & Univ. of Rochester. A liquid sodium ? ? dynamo experiment has been constructed at NMIMT to simulate MRI, dynamo gain, and feed back in liquid sodium (r1 = 15 cm,; r2 = 30 cm,; L=30 cm,; f1 = 120 Hz,; f2 = 30 Hz ). It is designed to simulate the generation of large scale magnetic fields in massive black hole accretion disks, galaxies, and stars. The omega gain is due to the shear flow of differential rotation of Couette flow between two differentially rotating co-axial cylinders. Differential rotation in a conducting fluid twists a radial or quadrupole magnetic flux into a greatly enhanced toroidal flux. A large coherent helicity is produced by driven plumes and astrophisically by star-disk collisions, supernova explosions, or large scale plume convection respectively. We have rotated the apparatus with water and hot oil and demonstrated stable Couette flow with only Ekman-flow-induced torque. We will report on the ? gain with liquid sodium. This Work has been supported by NMIMT, EMRTC, NSF, & LDRD of LANL.

Colgate, Stirling; Beckley, Howard; Li, Hui; Sonnenfield, Richard; Westpfahl, Dave; Bentley, Ian; Ginanni, Rocky; McKinnly, Travis; Pariev, Valadimir

2004-11-01

234

Immune System Inspired Health Monitoring of Machinery  

Microsoft Academic Search

During the last decades, there has been an increasing interest to develop engineering tools inspired by the human immune system. There are also many publications available that discuss artificial immune systems applications, including robotics, optimization, control, computer science and other disciplines. This paper presents an application of the AbNET- algorithm to a problem of machinery diagnostics. The antibody repertoire will

Ville Vhkangas; Kauko Leivisk; Jens Strackeljan

235

AGRICULTURAL MACHINERY--POWER. TEACHERS COPY.  

ERIC Educational Resources Information Center

THE PURPOSE OF THIS DOCUMENT IS TO PROVIDE A STUDY GUIDE FOR STUDENTS PREPARING FOR AGRICULTURAL MACHINERY OCCUPATIONS IN A VOCATIONAL AGRICULTURE COOPERATIVE EDUCATION PROGRAM. THE MATERIAL WAS DESIGNED BY SUBJECT MATTER SPECIALISTS ON THE BASIS OF STATE ADVISORY COMMITTEE RECOMMENDATIONS, TRIED IN OPERATIONAL PROGRAMS, AND REFINED BY A TEACHER.

HILL, DURWIN; VENABLE, BENNY MAC

236

EARNINGS IN THE MACHINERY INDUSTRIES, MID-1966.  

ERIC Educational Resources Information Center

RESULTS OF A MID-1966 NATIONWIDE SURVEY BY THE BUREAU OF LABOR STATISTICS SHOWED THAT THE EARNINGS OF PRODUCTION AND RELATED NONELECTRICAL MACHINERY WORKERS IN 21 LARGE OCCUPATIONAL AREAS VARIED BY OCCUPATION, SIZE OF ESTABLISHMENT, AND COMMUNITY, INDUSTRY, LABOR-MANAGEMENT CONTRACT STATUS, AND LOCATION. THE AVERAGE HOURLY WAGE WAS $2.84. HIGHER

BAUER, FREDERICK L.

237

Gap sensing benefits in Conform extrusion machinery  

Microsoft Academic Search

The work presents the results of production trials of a gap sensing system for continuous extrusion machinery. It is critical to maintain a precise pre-defined extrusion gap for the efficient running of the continuous extrusion process and to maintain product quality. A high temperature capacitive gap sensing system is designed and implemented on a copper extrusion machine in a production

K. Khawaja; K. Althoefer; M. P. Clode; L. D. Seneviratne

2004-01-01

238

Modeling cellular machinery through biological network comparison  

Microsoft Academic Search

Molecular networks represent the backbone of molecular activity within the cell. Recent studies have taken a comparative approach toward interpreting these networks, contrasting networks of different species and molecular types, and under varying conditions. In this review, we survey the field of comparative biological network analysis and describe its applications to elucidate cellular machinery and to predict protein function and

Trey Ideker; Roded Sharan

2006-01-01

239

The emerging shape of the ESCRT machinery  

Microsoft Academic Search

The past two years have seen an explosion in the structural understanding of the endosomal sorting complex required for transport (ESCRT) machinery that facilitates the trafficking of ubiquitylated proteins from endosomes to lysosomes via multivesicular bodies (MVBs). A common organization of all ESCRTs is a rigid core attached to flexibly connected modules that recognize other components of the MVB pathway.

Roger L. Williams; Sylvie Urb

2007-01-01

240

Versatility of the mitochondrial protein import machinery  

Microsoft Academic Search

The vast majority of mitochondrial proteins are synthesized in the cytosol and are imported into mitochondria by protein machineries located in the mitochondrial membranes. It has become clear that hydrophilic as well as hydrophobic preproteins use a common translocase in the outer mitochondrial membrane, but diverge to two distinct translocases in the inner membrane. The translocases are dynamic, high-molecular-weight complexes

Nikolaus Pfanner; Andreas Geissler

2001-01-01

241

Measuring Leakage From Large, Complicated Machinery  

NASA Technical Reports Server (NTRS)

Test chamber improvised from large bag. Cumulative sizes of leaks in large, complicated machinery measure with relatively simple variation of helium leak-checking technique. When used to check Space Shuttle main engine, new technique gave repeatable and correct results within 0.5 stdin.3/min (1.4 x 10 negative to the seventh power stdm3/s).

Bottemiller, S.

1987-01-01

242

Nonlinear Coherence Function for Machinery Diagnosis  

NASA Technical Reports Server (NTRS)

Vibration spectra analyzed for signs of trouble. Nonlinear coherence function assists in analysis of vibration spectra of machinery for signs of incipient failure. Useful primarily in determining whether apparent harmonic in complicated vibration signal indicates possible defect or if due to independent vibration source or extraneous noise.

Coffin, Thomas; Jong, Jen Y.

1987-01-01

243

46 CFR 169.629 - Compartments containing gasoline machinery or fuel tanks.  

Code of Federal Regulations, 2011 CFR

...Compartments containing gasoline machinery or fuel tanks. 169.629 Section...SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation ...Compartments containing gasoline machinery or fuel tanks. Spaces...

2011-10-01

244

46 CFR 169.629 - Compartments containing gasoline machinery or fuel tanks.  

Code of Federal Regulations, 2010 CFR

...Compartments containing gasoline machinery or fuel tanks. 169.629 Section...SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation ...Compartments containing gasoline machinery or fuel tanks. Spaces...

2010-10-01

245

46 CFR 169.629 - Compartments containing gasoline machinery or fuel tanks.  

Code of Federal Regulations, 2012 CFR

...Compartments containing gasoline machinery or fuel tanks. 169.629 Section...SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation ...Compartments containing gasoline machinery or fuel tanks. Spaces...

2012-10-01

246

46 CFR 169.629 - Compartments containing gasoline machinery or fuel tanks.  

Code of Federal Regulations, 2013 CFR

...Compartments containing gasoline machinery or fuel tanks. 169.629 Section...SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation ...Compartments containing gasoline machinery or fuel tanks. Spaces...

2013-10-01

247

46 CFR 169.629 - Compartments containing gasoline machinery or fuel tanks.  

Code of Federal Regulations, 2014 CFR

...Compartments containing gasoline machinery or fuel tanks. 169.629 Section...SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation ...Compartments containing gasoline machinery or fuel tanks. Spaces...

2014-10-01

248

46 CFR 58.20-15 - Installation of refrigerating machinery.  

Code of Federal Regulations, 2014 CFR

...ENGINEERING MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS Refrigeration Machinery 58.20-15 Installation of refrigerating...control device located outside the compartment. (c) All refrigeration compressor spaces shall be effectively ventilated and...

2014-10-01

249

29 CFR 1915.165 - Ship's deck machinery.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Ship's deck machinery. 1915.165 Section 1915.165...Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT...FOR SHIPYARD EMPLOYMENT Ship's Machinery and Piping Systems ...

2010-07-01

250

29 CFR 1910.214 - Cooperage machinery. [Reserved  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Cooperage machinery. [Reserved] 1910.214...Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR OCCUPATIONAL SAFETY AND HEALTH STANDARDS Machinery and Machine Guarding ...

2010-07-01

251

LOCK NO. 1 ST. LUCIE CANAL. MACHINERY HOUSE PLANS, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

LOCK NO. 1 - ST. LUCIE CANAL. MACHINERY HOUSE PLANS, ELEVATIONS, & DETAILS - St. Lucie Canal, Lock No. 1, Machinery Houses, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

252

44. Looking south towards Sullivan Machinery Company complex from the ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

44. Looking south towards Sullivan Machinery Company complex from the north side of the Sugar River. The footbridge was built in 1920. - Sullivan Machinery Company, Main Street between Pearl & Water Streets, Claremont, Sullivan County, NH

253

INTERIOR VIEW OF MACHINERY HOUSE, WEST OF LOCK, VIEW TO ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

INTERIOR VIEW OF MACHINERY HOUSE, WEST OF LOCK, VIEW TO NORTHEAST - St. Lucie Canal, Lock No. 1, Machinery Houses, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

254

Estimating farm machinery complements based on cropmix and farm size  

E-print Network

Machinery complement information is used in farm simulation models such as the FLIPSIM model when studying of the impacts of agricultural policies on representative farms. Since acquiring machinery complement data for FLIPSIM simulations is a...

Barrera, Anna Marie

1993-01-01

255

INTERIOR VIEW OF MACHINERY HOUSE, EAST OF LOCK, VIEW TO ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

INTERIOR VIEW OF MACHINERY HOUSE, EAST OF LOCK, VIEW TO NORTHEAST - St. Lucie Canal, Lock No. 1, Machinery Houses, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

256

46 CFR 111.103-9 - Machinery stop stations.  

Code of Federal Regulations, 2012 CFR

... Shipping 4 2012-10-01 2012-10-01 false Machinery stop stations. 111.103-9 Section 111.103-9 ...REQUIREMENTS Remote Stopping Systems 111.103-9 Machinery stop stations. (a) Each forced draft fan,...

2012-10-01

257

13. DETAILED INTERIOR VIEW OF ROLLER GATE OPERATING MACHINERY HOUSE, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. DETAILED INTERIOR VIEW OF ROLLER GATE OPERATING MACHINERY HOUSE, SHOWING ROLLER GATE OPERATING MACHINERY, LOOKING NORTH - Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 25, Cap au Gris, Lincoln County, MO

258

46 CFR 111.103-9 - Machinery stop stations.  

Code of Federal Regulations, 2010 CFR

... Shipping 4 2010-10-01 2010-10-01 false Machinery stop stations. 111.103-9 Section 111.103-9 ...REQUIREMENTS Remote Stopping Systems 111.103-9 Machinery stop stations. (a) Each forced draft fan,...

2010-10-01

259

46 CFR 169.315 - Ventilation (other than machinery spaces).  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Ventilation (other than machinery spaces). 169.315 Section 169.315 Shipping ...Hull Structure 169.315 Ventilation (other than machinery spaces). (a) All enclosed spaces within the...

2012-10-01

260

46 CFR 169.315 - Ventilation (other than machinery spaces).  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Ventilation (other than machinery spaces). 169.315 Section 169.315 Shipping ...Hull Structure 169.315 Ventilation (other than machinery spaces). (a) All enclosed spaces within the...

2014-10-01

261

46 CFR 111.103-9 - Machinery stop stations.  

Code of Federal Regulations, 2013 CFR

... Shipping 4 2013-10-01 2013-10-01 false Machinery stop stations. 111.103-9 Section 111.103-9 ...REQUIREMENTS Remote Stopping Systems 111.103-9 Machinery stop stations. (a) Each forced draft fan,...

2013-10-01

262

51. Electrical contacts and relays in the south machinery room ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

51. Electrical contacts and relays in the south machinery room (interior of both machinery rooms is identical). Facing south. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

263

46 CFR 169.315 - Ventilation (other than machinery spaces).  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Ventilation (other than machinery spaces). 169.315 Section 169.315 Shipping ...Hull Structure 169.315 Ventilation (other than machinery spaces). (a) All enclosed spaces within the...

2011-10-01

264

55. Reduction drive gears in south machinery room (interior of ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

55. Reduction drive gears in south machinery room (interior of both machinery rooms is identical). Facing west. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

265

60. VIEW TO SOUTHEAST TOWARDS WINDING MACHINERY: View towards the ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

60. VIEW TO SOUTHEAST TOWARDS WINDING MACHINERY: View towards the southeast looking down the tension runs towards the winding machinery. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

266

4. MACHINERY SHED AND STORAGE ROOM ADDITION, SOUTH AND WEST ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. MACHINERY SHED AND STORAGE ROOM ADDITION, SOUTH AND WEST WALL LOOKING NORTHEAST SEED STORAGE BUILDING (1963) BEHIND - Tucson Plant Material Center, Machinery Shed, 3241 North Romero Road, Tucson, Pima County, AZ

267

52. Detail of electrical contacts in the south machinery room ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

52. Detail of electrical contacts in the south machinery room (interior of both machinery rooms is identical). Facing south. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

268

12. DETAILED INTERIOR VIEW OF ROLLER GATE OPERATING MACHINERY HOUSE, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. DETAILED INTERIOR VIEW OF ROLLER GATE OPERATING MACHINERY HOUSE, SHOWING ROLLER GATE OPERATING MACHINERY, LOOKING SOUTH - Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 25, Cap au Gris, Lincoln County, MO

269

18. DETAIL VIEW OF MITER GATE OPERATING MACHINERY, SHOWING GATE ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

18. DETAIL VIEW OF MITER GATE OPERATING MACHINERY, SHOWING GATE STRUT, SECTOR ARM, AND GATE OPERATING MACHINERY WELL, LOOKING NORTHEAST - Upper Mississippi River 9-Foot Channel Project, Lock & Dam 26, Alton, Madison County, IL

270

46 CFR 111.103-9 - Machinery stop stations.  

Code of Federal Regulations, 2011 CFR

... Shipping 4 2011-10-01 2011-10-01 false Machinery stop stations. 111.103-9 Section 111.103-9 ...REQUIREMENTS Remote Stopping Systems 111.103-9 Machinery stop stations. (a) Each forced draft fan,...

2011-10-01

271

54. West emergency brake in the south machinery room (interior ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

54. West emergency brake in the south machinery room (interior of both machinery rooms is identical). Facing west. - Henry Ford Bridge, Spanning Cerritos Channel, Los Angeles-Long Beach Harbor, Los Angeles, Los Angeles County, CA

272

46 CFR 169.315 - Ventilation (other than machinery spaces).  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Ventilation (other than machinery spaces). 169.315 Section 169.315 Shipping ...Hull Structure 169.315 Ventilation (other than machinery spaces). (a) All enclosed spaces within the...

2010-10-01

273

46 CFR 169.315 - Ventilation (other than machinery spaces).  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Ventilation (other than machinery spaces). 169.315 Section 169.315 Shipping ...Hull Structure 169.315 Ventilation (other than machinery spaces). (a) All enclosed spaces within the...

2013-10-01

274

46 CFR 111.103-9 - Machinery stop stations.  

Code of Federal Regulations, 2014 CFR

... Shipping 4 2014-10-01 2014-10-01 false Machinery stop stations. 111.103-9 Section 111.103-9 ...REQUIREMENTS Remote Stopping Systems 111.103-9 Machinery stop stations. (a) Each forced draft fan,...

2014-10-01

275

Machinery sharing by agribusiness firms: methodology, application, and simulation  

E-print Network

Machinery investments represent a substantial portion of agribusiness firms costs. Because of high machinery costs, variable profit margins, and increasing competition, agribusiness managers continually seek methods to maintain profitability...

Wolfley, Jared Lynn

2009-05-15

276

46 CFR 252.33 - Hull and machinery insurance.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Hull and machinery insurance. 252.33 Section 252...Subsidy Rates 252.33 Hull and machinery insurance. (a) Subsidy items...including stamp taxes) of hull and machinery, increased value, excess...

2010-10-01

277

46 CFR 78.33-5 - Accidents to machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Accidents to machinery. 78.33-5 Section 78.33-5...Equipment 78.33-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further...

2010-10-01

278

46 CFR 171.095 - Machinery space bulkhead.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Machinery space bulkhead. 171.095 Section...Subdivision Requirements 171.095 Machinery space bulkhead. (a) This section...transverse watertight bulkheads to separate the machinery space from the remainder of the...

2014-10-01

279

46 CFR 185.208 - Accidents to machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Accidents to machinery. 185.208 Section 185.208 Shipping...Records 185.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2010-10-01

280

46 CFR 185.208 - Accidents to machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Accidents to machinery. 185.208 Section 185.208 Shipping...Records 185.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2012-10-01

281

46 CFR 122.208 - Accidents to machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Accidents to machinery. 122.208 Section 122.208 Shipping...Records 122.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2012-10-01

282

46 CFR 109.205 - Inspection of boilers and machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Inspection of boilers and machinery. 109.205 Section 109.205 Shipping...109.205 Inspection of boilers and machinery. The chief engineer or engineer...before he assumes charge of the boilers and machinery of a unit shall inspect the boilers...

2011-10-01

283

46 CFR 78.33-5 - Accidents to machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Accidents to machinery. 78.33-5 Section 78.33-5...Equipment 78.33-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further...

2012-10-01

284

33 CFR 157.39 - Machinery space bilges.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery space bilges. 157.39 Section... Vessel Operation 157.39 Machinery space bilges. (a) A tank vessel...discharge an oily mixture from a machinery space bilge that is combined...

2011-07-01

285

46 CFR 196.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Accidents to machinery. 196.30-5 Section 196.30-5...Equipment 196.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2013-10-01

286

Association for Computing Machinery Advancing Computing as a Science & Profession  

E-print Network

Association for Computing Machinery Advancing Computing as a Science & Profession Statewide commissioned by the U.S. Public Policy Committee of the Association for Computing Machinery February 2006 and/or a fee. #12;2 2 Preface The Association for Computing Machinery (ACM) is an educational

Wagner, David

287

Transmembrane Receptor DCC Associates with Protein Synthesis Machinery  

E-print Network

Transmembrane Receptor DCC Associates with Protein Synthesis Machinery and Regulates Translation colocalizes in particles with transla- tion machinery, and newly synthesized protein. The extracellular ligand and physical association of a cell surface receptor with the translation machinery leads to a generalizable

288

46 CFR 109.205 - Inspection of boilers and machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Inspection of boilers and machinery. 109.205 Section 109.205 Shipping...109.205 Inspection of boilers and machinery. The chief engineer or engineer...before he assumes charge of the boilers and machinery of a unit shall inspect the boilers...

2013-10-01

289

46 CFR 109.205 - Inspection of boilers and machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Inspection of boilers and machinery. 109.205 Section 109.205 Shipping...109.205 Inspection of boilers and machinery. The chief engineer or engineer...before he assumes charge of the boilers and machinery of a unit shall inspect the boilers...

2010-10-01

290

33 CFR 157.39 - Machinery space bilges.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery space bilges. 157.39 Section... Vessel Operation 157.39 Machinery space bilges. (a) A tank vessel...discharge an oily mixture from a machinery space bilge that is combined...

2014-07-01

291

46 CFR 196.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Accidents to machinery. 196.30-5 Section 196.30-5...Equipment 196.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2010-10-01

292

46 CFR 185.208 - Accidents to machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Accidents to machinery. 185.208 Section 185.208 Shipping...Records 185.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2014-10-01

293

33 CFR 157.39 - Machinery space bilges.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery space bilges. 157.39 Section... Vessel Operation 157.39 Machinery space bilges. (a) A tank vessel...discharge an oily mixture from a machinery space bilge that is combined...

2013-07-01

294

46 CFR 252.33 - Hull and machinery insurance.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Hull and machinery insurance. 252.33 Section 252...Subsidy Rates 252.33 Hull and machinery insurance. (a) Subsidy items...including stamp taxes) of hull and machinery, increased value, excess...

2011-10-01

295

46 CFR 97.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Accidents to machinery. 97.30-5 Section 97.30-5...Equipment 97.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2011-10-01

296

46 CFR 185.208 - Accidents to machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Accidents to machinery. 185.208 Section 185.208 Shipping...Records 185.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2013-10-01

297

46 CFR 109.205 - Inspection of boilers and machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Inspection of boilers and machinery. 109.205 Section 109.205 Shipping...109.205 Inspection of boilers and machinery. The chief engineer or engineer...before he assumes charge of the boilers and machinery of a unit shall inspect the boilers...

2014-10-01

298

46 CFR 171.095 - Machinery space bulkhead.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Machinery space bulkhead. 171.095 Section...Subdivision Requirements 171.095 Machinery space bulkhead. (a) This section...transverse watertight bulkheads to separate the machinery space from the remainder of the...

2013-10-01

299

29 CFR 1910.264 - Laundry machinery and operations.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Laundry machinery and operations. 1910.264 Section...Special Industries 1910.264 Laundry machinery and operations. (a) [Reserved...or forming an integral part of any machinery shall be removed or made...

2010-07-01

300

46 CFR 109.419 - Report of unsafe machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Report of unsafe machinery. 109.419 Section 109.419 Shipping...Notifications 109.419 Report of unsafe machinery. If a boiler, unfired pressure vessel, or other machinery on a unit is unsafe to operate, the...

2011-10-01

301

The bacterial outer membrane b-barrel assembly machinery  

E-print Network

REVIEW The bacterial outer membrane b-barrel assembly machinery Kelly H. Kim, Suraaj Aulakh. The b-barrel assembly machinery (BAM) complex, which is responsible for the proper assembly of b of the bacterial BAM complex. Keywords: outer membrane proteins; b-barrel assembly machinery; outer membrane

Paetzel, Mark

302

46 CFR 78.33-5 - Accidents to machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Accidents to machinery. 78.33-5 Section 78.33-5...Equipment 78.33-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further...

2013-10-01

303

33 CFR 157.39 - Machinery space bilges.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery space bilges. 157.39 Section... Vessel Operation 157.39 Machinery space bilges. (a) A tank vessel...discharge an oily mixture from a machinery space bilge that is combined...

2012-07-01

304

46 CFR 78.33-5 - Accidents to machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Accidents to machinery. 78.33-5 Section 78.33-5...Equipment 78.33-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further...

2011-10-01

305

29 CFR 1910.264 - Laundry machinery and operations.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Laundry machinery and operations. 1910.264 Section...Special Industries 1910.264 Laundry machinery and operations. (a) [Reserved...or forming an integral part of any machinery shall be removed or made...

2014-07-01

306

46 CFR 109.419 - Report of unsafe machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Report of unsafe machinery. 109.419 Section 109.419 Shipping...Notifications 109.419 Report of unsafe machinery. If a boiler, unfired pressure vessel, or other machinery on a unit is unsafe to operate, the...

2012-10-01

307

46 CFR 109.419 - Report of unsafe machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Report of unsafe machinery. 109.419 Section 109.419 Shipping...Notifications 109.419 Report of unsafe machinery. If a boiler, unfired pressure vessel, or other machinery on a unit is unsafe to operate, the...

2013-10-01

308

46 CFR 122.208 - Accidents to machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Accidents to machinery. 122.208 Section 122.208 Shipping...Records 122.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2014-10-01

309

46 CFR 109.205 - Inspection of boilers and machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Inspection of boilers and machinery. 109.205 Section 109.205 Shipping...109.205 Inspection of boilers and machinery. The chief engineer or engineer...before he assumes charge of the boilers and machinery of a unit shall inspect the boilers...

2012-10-01

310

46 CFR 97.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Accidents to machinery. 97.30-5 Section 97.30-5...Equipment 97.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2012-10-01

311

46 CFR 122.208 - Accidents to machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Accidents to machinery. 122.208 Section 122.208 Shipping...Records 122.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2011-10-01

312

Subversion of Cellular Autophagosomal Machinery by RNA Viruses  

E-print Network

Subversion of Cellular Autophagosomal Machinery by RNA Viruses William T. Jackson1 , Thomas H, components of the cellular machinery of autophagosome formation are subverted to promote viral replication of cellular autophagosomal machinery by RNA viruses. PLoS Biol 3(5): e156. Introduction Upon infection

Kirkegaard, Karla

313

46 CFR 97.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Accidents to machinery. 97.30-5 Section 97.30-5...Equipment 97.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2010-10-01

314

29 CFR 1910.264 - Laundry machinery and operations.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Laundry machinery and operations. 1910.264 Section...Special Industries 1910.264 Laundry machinery and operations. (a) [Reserved...or forming an integral part of any machinery shall be removed or made...

2011-07-01

315

46 CFR 122.208 - Accidents to machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Accidents to machinery. 122.208 Section 122.208 Shipping...Records 122.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2010-10-01

316

46 CFR 97.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Accidents to machinery. 97.30-5 Section 97.30-5...Equipment 97.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2013-10-01

317

46 CFR 171.095 - Machinery space bulkhead.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Machinery space bulkhead. 171.095 Section...Subdivision Requirements 171.095 Machinery space bulkhead. (a) This section...transverse watertight bulkheads to separate the machinery space from the remainder of the...

2011-10-01

318

46 CFR 97.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Accidents to machinery. 97.30-5 Section 97.30-5...Equipment 97.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2014-10-01

319

Long-term Potentiation Requires Unique Postsynaptic SNARE Fusion Machinery  

E-print Network

Seminar Long-term Potentiation Requires Unique Postsynaptic SNARE Fusion Machinery Debanjan Goswami LTP, but the exact molecular machinery is unclear. This seminar will focus on the results that show features of this particular SNARE- mediated fusion machinery. SNAP-47, a novel Q-SNARE protein in the post

Shyamasundar, R.K.

320

46 CFR 282.23 - Hull and machinery insurance.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Hull and machinery insurance. 282.23 Section 282...Subsidy Rates 282.23 Hull and machinery insurance. (a) Subsidy items...including stamp taxes) of hull and machinery, increased value, excess...

2011-10-01

321

29 CFR 1910.264 - Laundry machinery and operations.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Laundry machinery and operations. 1910.264 Section...Special Industries 1910.264 Laundry machinery and operations. (a) [Reserved...or forming an integral part of any machinery shall be removed or made...

2012-07-01

322

46 CFR 196.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Accidents to machinery. 196.30-5 Section 196.30-5...Equipment 196.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2011-10-01

323

46 CFR 78.33-5 - Accidents to machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Accidents to machinery. 78.33-5 Section 78.33-5...Equipment 78.33-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further...

2014-10-01

324

46 CFR 185.208 - Accidents to machinery.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Accidents to machinery. 185.208 Section 185.208 Shipping...Records 185.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2011-10-01

325

46 CFR 109.419 - Report of unsafe machinery.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Report of unsafe machinery. 109.419 Section 109.419 Shipping...Notifications 109.419 Report of unsafe machinery. If a boiler, unfired pressure vessel, or other machinery on a unit is unsafe to operate, the...

2010-10-01

326

Ancestral Ca21 Signaling Machinery in Early Animal and  

E-print Network

Ancestral Ca21 Signaling Machinery in Early Animal and Fungal Evolution Xinjiang Cai*,1 and David E machineries are present in the apusozoan protist Thecamonas trahens, which belongs to the putative unicellular generally believed that many ion channels and transporters in the animal Ca2þ sig- naling machinery were

Clapham, David E.

327

46 CFR 196.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Accidents to machinery. 196.30-5 Section 196.30-5...Equipment 196.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2014-10-01

328

46 CFR 171.095 - Machinery space bulkhead.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Machinery space bulkhead. 171.095 Section...Subdivision Requirements 171.095 Machinery space bulkhead. (a) This section...transverse watertight bulkheads to separate the machinery space from the remainder of the...

2012-10-01

329

46 CFR 282.23 - Hull and machinery insurance.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Hull and machinery insurance. 282.23 Section 282...Subsidy Rates 282.23 Hull and machinery insurance. (a) Subsidy items...including stamp taxes) of hull and machinery, increased value, excess...

2010-10-01

330

46 CFR 109.419 - Report of unsafe machinery.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Report of unsafe machinery. 109.419 Section 109.419 Shipping...Notifications 109.419 Report of unsafe machinery. If a boiler, unfired pressure vessel, or other machinery on a unit is unsafe to operate, the...

2014-10-01

331

46 CFR 171.095 - Machinery space bulkhead.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Machinery space bulkhead. 171.095 Section...Subdivision Requirements 171.095 Machinery space bulkhead. (a) This section...transverse watertight bulkheads to separate the machinery space from the remainder of the...

2010-10-01

332

29 CFR 1910.264 - Laundry machinery and operations.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Laundry machinery and operations. 1910.264 Section...Special Industries 1910.264 Laundry machinery and operations. (a) [Reserved...or forming an integral part of any machinery shall be removed or made...

2013-07-01

333

Association for Computing Machinery Committee on Women in Computing  

E-print Network

Association for Computing Machinery Committee on Women in Computing 1515 Broadway New York, NY of the Association for Computing Machinery's Committee on Women in Computing, UW­Madison Chapter wacm for Computing Machinery's Committee on Women in Computing, University of Wisconsin­Madison Chapter

Liblit, Ben

334

33 CFR 157.39 - Machinery space bilges.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery space bilges. 157.39 Section... Vessel Operation 157.39 Machinery space bilges. (a) A tank vessel...discharge an oily mixture from a machinery space bilge that is combined...

2010-07-01

335

46 CFR 196.30-5 - Accidents to machinery.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Accidents to machinery. 196.30-5 Section 196.30-5...Equipment 196.30-5 Accidents to machinery. (a) In the event of an accident to a boiler, unfired pressure vessel, or machinery tending to render the further use of...

2012-10-01

336

46 CFR 122.208 - Accidents to machinery.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Accidents to machinery. 122.208 Section 122.208 Shipping...Records 122.208 Accidents to machinery. The owner, managing operator...boiler, unfired pressure vessel, or machinery that renders further use of the item...

2013-10-01

337

46 CFR 62.50-20 - Additional requirements for minimally attended machinery plants.  

Code of Federal Regulations, 2011 CFR

...Additional requirements for minimally attended machinery plants. 62.50-20 Section 62.50-20...Additional requirements for minimally attended machinery plants. Note: Minimally attended machinery plants include vessel machinery...

2011-10-01

338

46 CFR 62.50-20 - Additional requirements for minimally attended machinery plants.  

Code of Federal Regulations, 2010 CFR

...Additional requirements for minimally attended machinery plants. 62.50-20 Section 62.50-20...Additional requirements for minimally attended machinery plants. Note: Minimally attended machinery plants include vessel machinery...

2010-10-01

339

46 CFR 62.50-20 - Additional requirements for minimally attended machinery plants.  

Code of Federal Regulations, 2012 CFR

...Additional requirements for minimally attended machinery plants. 62.50-20 Section 62.50-20...Additional requirements for minimally attended machinery plants. Note: Minimally attended machinery plants include vessel machinery...

2012-10-01

340

46 CFR 62.50-20 - Additional requirements for minimally attended machinery plants.  

Code of Federal Regulations, 2013 CFR

...Additional requirements for minimally attended machinery plants. 62.50-20 Section 62.50-20...Additional requirements for minimally attended machinery plants. Note: Minimally attended machinery plants include vessel machinery...

2013-10-01

341

Low-Resolution Structure of Vaccinia Virus DNA Replication Machinery  

PubMed Central

Smallpox caused by the poxvirus variola virus is a highly lethal disease that marked human history and was eradicated in 1979 thanks to a worldwide mass vaccination campaign. This virus remains a significant threat for public health due to its potential use as a bioterrorism agent and requires further development of antiviral drugs. The viral genome replication machinery appears to be an ideal target, although very little is known about its structure. Vaccinia virus is the prototypic virus of the Orthopoxvirus genus and shares more than 97% amino acid sequence identity with variola virus. Here we studied four essential viral proteins of the replication machinery: the DNA polymerase E9, the processivity factor A20, the uracil-DNA glycosylase D4, and the helicase-primase D5. We present the recombinant expression and biochemical and biophysical characterizations of these proteins and the complexes they form. We show that the A20D4 polymerase cofactor binds to E9 with high affinity, leading to the formation of the A20D4E9 holoenzyme. Small-angle X-ray scattering yielded envelopes for E9, A20D4, and A20D4E9. They showed the elongated shape of the A20D4 cofactor, leading to a 150- separation between the polymerase active site of E9 and the DNA-binding site of D4. Electron microscopy showed a 6-fold rotational symmetry of the helicase-primase D5, as observed for other SF3 helicases. These results favor a rolling-circle mechanism of vaccinia virus genome replication similar to the one suggested for tailed bacteriophages. PMID:23175373

Sle, Cleste; Gabel, Frank; Gutsche, Irina; Ivanov, Ivan; Burmeister, Wim P.

2013-01-01

342

The Mechanotransduction Machinery of Hair Cells  

NSDL National Science Digital Library

Mechanotransduction, the conversion of mechanical force into an electrochemical signal, allows living organisms to detect touch, hear, register movement and gravity, and sense changes in cell volume and shape. Hair cells in the vertebrate inner ear are mechanoreceptor cells specialized for the detection of sound and head movement. Each hair cell contains, at the apical surface, rows of stereocilia that are connected by extracellular filaments to form an exquisitely organized bundle. Mechanotransduction channels, localized near the tips of the stereocilia, are gated by the gating spring, an elastic element that is stretched upon stereocilia deflection and mediates rapid channel opening. Components of the mechanotransduction machinery in hair cells have been identified and several are encoded by genes linked to deafness in humans, which indicates that defects in the mechanotransduction machinery are the underlying cause of some forms of hearing impairment.

Nicolas Grillet (La Jolla; Scripps Research Institute REV)

2009-08-25

343

Life extension module for machinery diagnostic systems  

Microsoft Academic Search

Machinery diagnostic systems detect and monitor faults but are unable to predict remaining life. The RiskMANTM process developed as one of the modules of the Neural Network System Health Usage and Monitoring System (NNS\\/HUMS), developed under JAHUMS contract administered by NSWC\\/CD, provides the means for converting the outputs of a diagnostic system into parameters usable in a set of life

R. E. Giuntini

2000-01-01

344

Autophagosome formation: core machinery and adaptations  

Microsoft Academic Search

Eukaryotic cells employ autophagy to degrade damaged or obsolete organelles and proteins. Central to this process is the formation of autophagosomes, double-membrane vesicles responsible for delivering cytoplasmic material to lysosomes. In the past decade many autophagy-related genes, ATG, have been identified that are required for selective and\\/or nonselective autophagic functions. In all types of autophagy, a core molecular machinery has

Zhiping Xie; Daniel J. Klionsky

2007-01-01

345

Low Back Pain in Port Machinery Operators  

NASA Astrophysics Data System (ADS)

The occurrence of several types of low back pain (LBP) was investigated by a standardized questionnaire in a group of 219 port machinery operators exposed to whole-body vibration (WBV) and postural load and in a control group of 85 maintenance workers employed at the same transport company. The group of port machinery operators included 85 straddle carrier drivers, 88 fork-lift truck drivers, and 46 crane operators. The vector sum of the frequency-weighted r.m.s. acceleration of vibration measured on the seatpan of port vehicles and machines averaged 090 m/s2 for fork-lift trucks, 048 m/s2 for straddle carriers, 053 m/s2 for mobile cranes, and 022 m/s2 for overhead cranes. The 12-month prevalence of low back symptoms (LBP, sciatic pain, treated LBP, sick leave due to LBP) was significantly greater in the fork-lift truck drivers than in the controls and the other two groups of port machinery operators. After adjusting for potential confounders, the prevalence of low back symptoms was found to increase with the increase of WBV exposure expressed as duration of exposure (driving years), equivalent vibration magnitude (m/s2), or cumulative vibration exposure (yr m2/s4). An excess risk for lumbar disc herniation was observed in the port machinery operators with prolonged driving experience. In both the controls and the port machinery operators, low back complaints were strongly associated with perceived postural load assessed in terms of frequency and/or duration of awkward postures at work. Multivariate analysis showed that vibration exposure and postural load were independent predictors of LBP. Even though the cross-sectional design of the present study does not permit firm conclusions on the relationship between WBV exposure and low back disorders, the findings of this investigation provide additional epidemiological evidence that seated WBV exposure combined with non-neutral trunk postures, as while driving, is associated with an increased risk of long-term adverse health effects on the lower back.

BOVENZI, M.; PINTO, I.; STACCHINI, N.

2002-05-01

346

Test Your Sodium Smarts  

MedlinePLUS

... You may be surprised to learn how much sodium is in many foods. Sodium, including sodium chloride ... foods with little or no salt. Test your sodium smarts by answering these 10 questions about which ...

347

Association for Computing Machinery: e-voting  

NSDL National Science Digital Library

The Association for Computing Machinery is "an international scientific and educational organization dedicated to advancing the arts, sciences, and applications of information technology." This website provides the official position for the Association on computer-based voting systems. Their position is that "while computer-based e-voting systems have the potential to improve the electoral process, such systems must embody careful engineering, strong safeguards, and rigorous testing in both their design and operation." The website also reports on results from a poll of the members, indicating that 86.38% of the members surveyed "strongly agreed" with this position.

348

Electromechanical simulation and test of rotating systems with magnetic bearing or piezoelectric actuator active vibration control  

NASA Technical Reports Server (NTRS)

This paper contains a summary of the experience of the authors in the field of electromechanical modeling for rotating machinery - active vibration control. Piezoelectric and magnetic bearing actuator based control are discussed.

Palazzolo, Alan B.; Tang, Punan; Kim, Chaesil; Manchala, Daniel; Barrett, Tim; Kascak, Albert F.; Brown, Gerald; Montague, Gerald; Dirusso, Eliseo; Klusman, Steve

1994-01-01

349

The Ubiquitination Machinery of the Ubiquitin System  

PubMed Central

The protein ubiquitin is a covalent modifier of proteins, including itself. The ubiquitin system encompasses the enzymes required for catalysing attachment of ubiquitin to substrates as well as proteins that bind to ubiquitinated proteins leading them to their final fate. Also included are activities that remove ubiquitin independent of, or in concert with, proteolysis of the substrate, either by the proteasome or proteases in the vacuole. In addition to ubiquitin encoded by a family of fusion proteins, there are proteins with ubiquitin-like domains, likely forming ubiquitin's ?-grasp fold, but incapable of covalent modification. However, they serve as protein-protein interaction platforms within the ubiquitin system. Multi-gene families encode all of these types of activities. Within the ubiquitination machinery half of the ubiquitin system are redundant, partially redundant, and unique components affecting diverse developmental and environmental responses in plants. Notably, multiple aspects of biotic and abiotic stress responses require, or are modulated by, ubiquitination. Finally, aspects of the ubiquitin system have broad utility: as components to enhance gene expression or to regulate protein abundance. This review focuses on the ubiquitination machinery: ubiquitin, unique aspects about the synthesis of ubiquitin and organization of its gene family, ubiquitin activating enzymes (E1), ubiquitin conjugating enzymes (E2) and ubiquitin ligases, or E3s. Given the large number of E3s in Arabidopsis this review covers the U box, HECT and RING type E3s, with the exception of the cullin-based E3s. PMID:25320573

Callis, Judy

2014-01-01

350

Runway Rotations  

NSDL National Science Digital Library

Students will use small paper airplanes to model rotations required to turn onto a runway. Students will rotate planes 45, 90, 180, 270, and 360 degrees. Students will identify and describe the results of rotations using benchmark angles.

2012-11-16

351

Pravastatin sodium.  

PubMed

Pravastatin sodium is an [HMG-CoA] reductase inhibitor and is a lipid-regulating drug. This monograph includes the description of the drug: nomenclature, formulae, elemental composition, solubility, appearance, and partition coefficient. The uses and the methods that have been reported for the synthesis of this drug are described. The physical methods that were used to characterize the drug are the X-ray powder diffraction pattern, thermal methods, melting point, and differential scanning calorimetry. This chapter also contains the following spectra of the drug: the ultraviolet spectrum, the vibrational spectrum, the nuclear magnetic resonance spectra, and the mass spectrum. The compendial methods of analysis include the British Pharmacopoeia and the United States Pharmacopoeia methods. Other methods of analysis that are included in this profile are spectrophotometric, electrochemical, polarographic, voltammetric and chromatographic, and immunoassay methods. The chapter also contains the pharmacokinetics, metabolism, stability, and articles that reviewed pravastatin sodium manufacturing, characterization, and analysis. One hundred and sixty-two references are listed at the end of this comprehensive profile. PMID:24794911

Al-Badr, Abdullah A; Mostafa, Gamal A E

2014-01-01

352

Evolution of the ?-barrel assembly machinery.  

PubMed

Proteins from the Omp85 family have roles in membrane biogenesis, and the archetypal protein of this family is the bacterial outer membrane protein BamA. Through evolution, BamA has acquired membrane protein partner subunits, but distinct partner subunits are evident in the various bacterial lineages. As a result, experimental work on several species of bacteria has revealed varietal forms of the ?-barrel assembly machinery (BAM complex). This scenario extends even into mitochondria and plastids, organelles of eukaryotic cells that evolved from intracellular bacterial ancestors. In addition to the BAM complex, other molecular machines, namely the two-partner secretion system (TPS) and the translocation and assembly module (the TAM), probably evolved from gene duplication events involving BamA. We discuss what is known about the diverse composition of the BAM complex in various bacterial lineages, and how this diversity impacts on our understanding of the mechanism underlying the assembly of bacterial outer membranes. PMID:22959613

Webb, Chaille T; Heinz, Eva; Lithgow, Trevor

2012-12-01

353

On the mechanochemical machinery underlying chromatin remodeling  

NASA Astrophysics Data System (ADS)

This dissertation discuss two recent efforts, via a unique combination of structural bioinformatics and density functional theory, to unravel some of the details concerning how molecular machinery within the eukaryotic cell nucleus controls chromatin architecture. The first, a study of the 5-methylation of cytosine in 5'-CG-3' : 5'-CG-3' base-pair steps, reveals that the methyl groups roughen the local elastic energy landscape of the DNA. This enhances the probability of the canonical B-DNA structure transitioning into the undertwisted A-like and overtwisted C-like forms seen in nucleosomes, or looped segments of DNA bound to histones. The second part focuses on the formation of salt bridges between arginine residues in histones and phosphate groups on the DNA backbone. The arginine residues are ob- served to apply a tunable mechanical load to the backbone, enabling precision-controlled activation of DNA deformations.

Yusufaly, Tahir I.

354

Multiple Cylinder Free-Piston Stirling Machinery  

NASA Astrophysics Data System (ADS)

In order to improve the specific power of piston-cylinder type machinery, there is a point in capacity or power where an advantage accrues with increasing number of piston-cylinder assemblies. In the case of Stirling machinery where primary energy is transferred across the casing wall of the machine, this consideration is even more important. This is due primarily to the difference in scaling of basic power and the required heat transfer. Heat transfer is found to be progressively limited as the size of the machine increases. Multiple cylinder machines tend to preserve the surface area to volume ratio at more favorable levels. In addition, the spring effect of the working gas in the so-called alpha configuration is often sufficient to provide a high frequency resonance point that improves the specific power. There are a number of possible multiple cylinder configurations. The simplest is an opposed pair of piston-displacer machines (beta configuration). A three-cylinder machine requires stepped pistons to obtain proper volume phase relationships. Four to six cylinder configurations are also possible. A small demonstrator inline four cylinder alpha machine has been built to demonstrate both cooling operation and power generation. Data from this machine verifies theoretical expectations and is used to extrapolate the performance of future machines. Vibration levels are discussed and it is argued that some multiple cylinder machines have no linear component to the casing vibration but may have a nutating couple. Example applications are discussed ranging from general purpose coolers, computer cooling, exhaust heat power extraction and some high power engines.

Berchowitz, David M.; Kwon, Yong-Rak

355

Industrial Machinery Maintenance and Repair. Florida Vocational Program Guide.  

ERIC Educational Resources Information Center

This vocational program guide is intended to assist in the organization, operation, and evaluation of a program in industrial machinery maintenance and repair in school districts, area vocational centers, and community colleges. The following topics are covered: job duties of millwrights, maintenance mechanics, and machinery erectors; program

University of South Florida, Tampa. Dept. of Adult and Vocational Education.

356

Safety Guards for Machinery. Module SH-34. Safety and Health.  

ERIC Educational Resources Information Center

This student module on safety guards for machinery is one of 50 modules concerned with job safety and health. This module discusses how machinery can be made safer to use by the installation of safety guards. Following the introduction, seven objectives (each keyed to a page in the text) the student is expected to accomplish are listed (e.g.,

Center for Occupational Research and Development, Inc., Waco, TX.

357

Extrachromosomal elements and the evolution of cellular DNA replication machineries  

Microsoft Academic Search

DNA replication is fundamental to the propagation of cellular life. Remarkably, the bacterial replication machinery is distinct from that used by archaea and eukaryotes. In this article, we discuss the role that lateral gene transfer by extra-chromosomal elements might have had in shaping the replication machinery and even modulating the manner in which host cellular genomes are replicated.

Adam T. McGeoch; Stephen D. Bell

2008-01-01

358

52. VIEW NORTHEAST ACROSS WINDING MACHINERY: Overall view towards northwest ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

52. VIEW NORTHEAST ACROSS WINDING MACHINERY: Overall view towards northwest of the winding machinery on the first floor of the Washington and Mason Streets powerhouse and car barn. Photograph taken from museum mezzanine looking along the tension runs. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

359

54. VIEW TO SOUTH OF WINDING MACHINERY: General view towards ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

54. VIEW TO SOUTH OF WINDING MACHINERY: General view towards the south showing the winding machinery on the first floor of the Washington and Mason Streets powerhouse and car barn. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

360

Post-stressed concrete foundation may reduce machinery vibration  

NASA Technical Reports Server (NTRS)

Post-stressing concrete mat foundation reduces excessive vibrations in machinery. The mat is stressed in compression after the machinery is mounted, thus closing any cracks in it, altering the distribution of the soil subgrade reaction on the mat, and changing the mat-subgrade natural frequency.

Fistedis, S. H.

1967-01-01

361

16. Sullivan Machinery Co. complex from the west. The Foundry ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

16. Sullivan Machinery Co. complex from the west. The Foundry (1908) is on the left, and the Erecting Shop (1919) in the right foreground, with the Machine Shop (1905) beyond it. A Baltimore truss steel bridge, built in 1905, is visible in the center of the photograph. - Sullivan Machinery Company, Main Street between Pearl & Water Streets, Claremont, Sullivan County, NH

362

Isolation of Components of the Chloroplast Protein Import Machinery  

Microsoft Academic Search

Components of the protein import machinery of the chloroplast were isolated by a procedure in which the import machinery was engaged in vitro with a tagged import substrate under conditions that yielded largely chloroplast envelope-bound import intermediates. Subsequent detergent solubilization of envelope membranes showed that six envelope polypeptides copurified specifically and, apparently, stoichiometrically with the import intermediates. Four of these

Danny J. Schnell; Felix Kessler; Gunter Blobel

1994-01-01

363

PLANAR VIEW OF NORTHWEST SIDE OF UPPER GATE MACHINERY HOUSE, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

PLANAR VIEW OF NORTHWEST SIDE OF UPPER GATE MACHINERY HOUSE, SOUTH OF LOCK, WITH CONTROL HOUSE AND UPPER ENTRANCE TO OLD LOCK ON LEFT, VIEW TOWARDS SOUTHEAST - St. Lucie Canal, Lock No. 1, Machinery Houses, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

364

4. FIRST FLOOR INTERIOR, AMMONIA COMPRESSION DYNAMOS IN MACHINERY ROOM ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. FIRST FLOOR INTERIOR, AMMONIA COMPRESSION DYNAMOS IN MACHINERY ROOM ALONG SOUTH SIDE OF WESTERN PORTION OF BUILDING, FROM EASTERN ENTRANCE TO MACHINERY ROOM, LOOKING WEST. - Oakland Naval Supply Center, Cold Storage Warehouse, South of C Street between First & Second Street, Oakland, Alameda County, CA

365

Oblique view of southeast machinery house, SF 109, with NE ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Oblique view of southeast machinery house, SF 109, with NE machinery house in background, at downstream end of lock, view towards north northwest - St. Lucie Canal, St. Lucie Lock No. 1, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

366

18. SOUTHWEST TO CIRCA 1900 MICHIGAN MACHINERY MFG. CO. PUNCH ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

18. SOUTHWEST TO CIRCA 1900 MICHIGAN MACHINERY MFG. CO. PUNCH PRESS, CIRCA 1910 'THE RACINE' RECIPROCATING HACK SAW, AND CIRCA 1900 SNAG GRINDER NEAR CENTER OF FACTORY BUILDING. AT THE RIGHT ARE THREE WHEELED WORK STATIONS. THE LINE SHAFT WITH BELTS AND PULLEYS FOR OPERATING MACHINERY IS VISIBLE IN THE RIGHT BACKGROUND. - Kregel Windmill Company Factory, 1416 Central Avenue, Nebraska City, Otoe County, NE

367

46 CFR 91.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2011 CFR

...Standards in inspection of hulls, boilers, and machinery. 91.15-1 Section 91.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2011-10-01

368

49 CFR 173.222 - Dangerous goods in equipment, machinery or apparatus.  

Code of Federal Regulations, 2012 CFR

... false Dangerous goods in equipment, machinery or apparatus. 173.222 Section 173...173.222 Dangerous goods in equipment, machinery or apparatus. Hazardous materials in machinery or apparatus are excepted from the...

2012-10-01

369

46 CFR 189.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2011 CFR

...Standards in inspection of hulls, boilers, and machinery. 189.15-1 Section 189.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2011-10-01

370

46 CFR 32.56-30 - Category A machinery spaces: Bulkheads and decks-T/ALL.  

Code of Federal Regulations, 2014 CFR

... 2014-10-01 false Category A machinery spaces: Bulkheads and decks-T/ALL... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-30 Category A machinery spaces: Bulkheads and...

2014-10-01

371

9 CFR 318.24 - Product prepared using advanced meat/bone separation machinery; process control.  

Code of Federal Regulations, 2011 CFR

...using advanced meat/bone separation machinery; process control. 318.24 Section...using advanced meat/bone separation machinery; process control. (a) General...in mechanical meat/bone separation machinery (i.e., AMR systems) that,...

2011-01-01

372

29 CFR 1918.98 - Qualifications of machinery operators and supervisory training.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Qualifications of machinery operators and supervisory training... 1918.98 Qualifications of machinery operators and supervisory training. (a) Qualification of machinery operators. (1) Only...

2012-07-01

373

29 CFR 1918.98 - Qualifications of machinery operators and supervisory training.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Qualifications of machinery operators and supervisory training... 1918.98 Qualifications of machinery operators and supervisory training. (a) Qualification of machinery operators. (1) Only...

2014-07-01

374

46 CFR 71.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2011 CFR

...Standards in inspection of hulls, boilers, and machinery. 71.15-1 Section 71.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2011-10-01

375

46 CFR 174.200 - Damaged stability in machinery spaces for all OSVs.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Damaged stability in machinery spaces for all OSVs. 174.200 Section... 174.200 Damaged stability in machinery spaces for all OSVs. Each OSV...between any two watertight bulkheads in each machinery...

2011-10-01

376

46 CFR 189.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2014 CFR

...Standards in inspection of hulls, boilers, and machinery. 189.15-1 Section 189.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2014-10-01

377

46 CFR 71.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2013 CFR

...Standards in inspection of hulls, boilers, and machinery. 71.15-1 Section 71.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2013-10-01

378

46 CFR 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Separation of machinery and fuel tank spaces from accommodation...NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation 169.631 Separation of machinery and fuel tank spaces from...

2013-10-01

379

33 CFR 150.620 - What are the requirements for protecting personnel from machinery?  

Code of Federal Regulations, 2011 CFR

...requirements for protecting personnel from machinery? 150.620 Section 150.620 ...requirements for protecting personnel from machinery? The deepwater port operator must...protected from the risks created by operating machinery through the use of guard devices...

2011-07-01

380

46 CFR 153.233 - Separation of tanks from machinery, service and other spaces.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Separation of tanks from machinery, service and other spaces. 153...153.233 Separation of tanks from machinery, service and other spaces. ...meeting in a cruciform joint: (1) Machinery spaces. (2) Service spaces....

2013-10-01

381

30 CFR 77.404 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery and equipment; operation and maintenance...Mechanical Equipment 77.404 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2014-07-01

382

46 CFR 153.233 - Separation of tanks from machinery, service and other spaces.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Separation of tanks from machinery, service and other spaces. 153...153.233 Separation of tanks from machinery, service and other spaces. ...meeting in a cruciform joint: (1) Machinery spaces. (2) Service spaces....

2011-10-01

383

46 CFR 182.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2012 CFR

...false Ventilation of spaces containing diesel machinery. 182.465 Section 182.465 Shipping...PASSENGER VESSELS (UNDER 100 GROSS TONS) MACHINERY INSTALLATION Specific Machinery Requirements 182.465 Ventilation...

2012-10-01

384

40 CFR Appendix A to Part 438 - Typical Products in Metal Products and Machinery Sectors  

Code of Federal Regulations, 2013 CFR

...Typical Products in Metal Products and Machinery Sectors A Appendix A to Part 438...STANDARDS (CONTINUED) METAL PRODUCTS AND MACHINERY POINT SOURCE CATEGORY Pt. 438, App...Typical Products in Metal Products and Machinery Sectors AEROSPACE Guided...

2013-07-01

385

46 CFR 119.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2014 CFR

...false Ventilation of spaces containing diesel machinery. 119.465 Section 119.465 Shipping...ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS MACHINERY INSTALLATION Specific Machinery Requirements 119.465 Ventilation...

2014-10-01

386

49 CFR 173.222 - Dangerous goods in equipment, machinery or apparatus.  

Code of Federal Regulations, 2013 CFR

... false Dangerous goods in equipment, machinery or apparatus. 173.222 Section 173...173.222 Dangerous goods in equipment, machinery or apparatus. Hazardous materials in machinery or apparatus are excepted from the...

2013-10-01

387

40 CFR Appendix A to Part 438 - Typical Products in Metal Products and Machinery Sectors  

Code of Federal Regulations, 2014 CFR

...Typical Products in Metal Products and Machinery Sectors A Appendix A to Part 438...STANDARDS (CONTINUED) METAL PRODUCTS AND MACHINERY POINT SOURCE CATEGORY Pt. 438, App...Typical Products in Metal Products and Machinery Sectors AEROSPACE Guided...

2014-07-01

388

46 CFR 32.56-40 - Category A machinery spaces: Insulation-T/ALL.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Category A machinery spaces: Insulation-T/ALL. 32... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-40 Category A machinery spaces: InsulationT/ALL....

2012-10-01

389

30 CFR 77.404 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery and equipment; operation and maintenance...Mechanical Equipment 77.404 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2012-07-01

390

46 CFR 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Separation of machinery and fuel tank spaces from accommodation...NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation 169.631 Separation of machinery and fuel tank spaces from...

2011-10-01

391

46 CFR 182.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2014 CFR

...false Ventilation of spaces containing diesel machinery. 182.465 Section 182.465 Shipping...PASSENGER VESSELS (UNDER 100 GROSS TONS) MACHINERY INSTALLATION Specific Machinery Requirements 182.465 Ventilation...

2014-10-01

392

46 CFR 153.233 - Separation of tanks from machinery, service and other spaces.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Separation of tanks from machinery, service and other spaces. 153...153.233 Separation of tanks from machinery, service and other spaces. ...meeting in a cruciform joint: (1) Machinery spaces. (2) Service spaces....

2012-10-01

393

30 CFR 57.3460 - Maintenance between machinery or equipment and ribs.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Maintenance between machinery or equipment and ribs. 57...57.3460 Maintenance between machinery or equipment and ribs. Persons...perform maintenance work between machinery or equipment and ribs unless...

2013-07-01

394

46 CFR 153.233 - Separation of tanks from machinery, service and other spaces.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Separation of tanks from machinery, service and other spaces. 153...153.233 Separation of tanks from machinery, service and other spaces. ...meeting in a cruciform joint: (1) Machinery spaces. (2) Service spaces....

2014-10-01

395

49 CFR 393.130 - What are the rules for securing heavy vehicles, equipment and machinery?  

Code of Federal Regulations, 2012 CFR

...securing heavy vehicles, equipment and machinery? 393.130 Section 393.130 Transportation...securing heavy vehicles, equipment and machinery? (a) Applicability. The rules...transportation of heavy vehicles, equipment and machinery which operate on wheels or...

2012-10-01

396

46 CFR 119.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2011 CFR

...false Ventilation of spaces containing diesel machinery. 119.465 Section 119.465 Shipping...ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS MACHINERY INSTALLATION Specific Machinery Requirements 119.465 Ventilation...

2011-10-01

397

46 CFR 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Separation of machinery and fuel tank spaces from accommodation...NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation 169.631 Separation of machinery and fuel tank spaces from...

2014-10-01

398

33 CFR 150.620 - What are the requirements for protecting personnel from machinery?  

Code of Federal Regulations, 2012 CFR

...requirements for protecting personnel from machinery? 150.620 Section 150.620 ...requirements for protecting personnel from machinery? The deepwater port operator must...protected from the risks created by operating machinery through the use of guard devices...

2012-07-01

399

49 CFR 393.130 - What are the rules for securing heavy vehicles, equipment and machinery?  

Code of Federal Regulations, 2010 CFR

...securing heavy vehicles, equipment and machinery? 393.130 Section 393.130 Transportation...securing heavy vehicles, equipment and machinery? (a) Applicability. The rules...transportation of heavy vehicles, equipment and machinery which operate on wheels or...

2010-10-01

400

30 CFR 57.3460 - Maintenance between machinery or equipment and ribs.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Maintenance between machinery or equipment and ribs. 57...57.3460 Maintenance between machinery or equipment and ribs. Persons...perform maintenance work between machinery or equipment and ribs unless...

2011-07-01

401

30 CFR 77.404 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery and equipment; operation and maintenance...Mechanical Equipment 77.404 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2010-07-01

402

30 CFR 57.3460 - Maintenance between machinery or equipment and ribs.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Maintenance between machinery or equipment and ribs. 57...57.3460 Maintenance between machinery or equipment and ribs. Persons...perform maintenance work between machinery or equipment and ribs unless...

2014-07-01

403

9 CFR 318.24 - Product prepared using advanced meat/bone separation machinery; process control.  

Code of Federal Regulations, 2014 CFR

...using advanced meat/bone separation machinery; process control. 318.24 Section...using advanced meat/bone separation machinery; process control. (a) General...in mechanical meat/bone separation machinery (i.e., AMR systems) that,...

2014-01-01

404

46 CFR 174.200 - Damaged stability in machinery spaces for all OSVs.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Damaged stability in machinery spaces for all OSVs. 174.200 Section... 174.200 Damaged stability in machinery spaces for all OSVs. Each OSV...between any two watertight bulkheads in each machinery...

2013-10-01

405

33 CFR 150.620 - What are the requirements for protecting personnel from machinery?  

Code of Federal Regulations, 2010 CFR

...requirements for protecting personnel from machinery? 150.620 Section 150.620 ...requirements for protecting personnel from machinery? The deepwater port operator must...protected from the risks created by operating machinery through the use of guard devices...

2010-07-01

406

46 CFR 71.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2010 CFR

...Standards in inspection of hulls, boilers, and machinery. 71.15-1 Section 71.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2010-10-01

407

9 CFR 318.24 - Product prepared using advanced meat/bone separation machinery; process control.  

Code of Federal Regulations, 2010 CFR

...using advanced meat/bone separation machinery; process control. 318.24 Section...using advanced meat/bone separation machinery; process control. (a) General...in mechanical meat/bone separation machinery (i.e., AMR systems) that,...

2010-01-01

408

46 CFR 119.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2012 CFR

...false Ventilation of spaces containing diesel machinery. 119.465 Section 119.465 Shipping...ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS MACHINERY INSTALLATION Specific Machinery Requirements 119.465 Ventilation...

2012-10-01

409

49 CFR 173.222 - Dangerous goods in equipment, machinery or apparatus.  

Code of Federal Regulations, 2010 CFR

... false Dangerous goods in equipment, machinery or apparatus. 173.222 Section 173...173.222 Dangerous goods in equipment, machinery or apparatus. Hazardous materials in machinery or apparatus are excepted from the...

2010-10-01

410

46 CFR 174.200 - Damaged stability in machinery spaces for all OSVs.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 false Damaged stability in machinery spaces for all OSVs. 174.200 Section... 174.200 Damaged stability in machinery spaces for all OSVs. Each OSV...between any two watertight bulkheads in each machinery...

2014-10-01

411

46 CFR 174.200 - Damaged stability in machinery spaces for all OSVs.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Damaged stability in machinery spaces for all OSVs. 174.200 Section... 174.200 Damaged stability in machinery spaces for all OSVs. Each OSV...between any two watertight bulkheads in each machinery...

2012-10-01

412

40 CFR Appendix A to Part 438 - Typical Products in Metal Products and Machinery Sectors  

Code of Federal Regulations, 2010 CFR

...Typical Products in Metal Products and Machinery Sectors A Appendix A to Part 438...GUIDELINES AND STANDARDS METAL PRODUCTS AND MACHINERY POINT SOURCE CATEGORY Pt. 438, App...Typical Products in Metal Products and Machinery Sectors AEROSPACE Guided...

2010-07-01

413

29 CFR 1918.98 - Qualifications of machinery operators and supervisory training.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Qualifications of machinery operators and supervisory training... 1918.98 Qualifications of machinery operators and supervisory training. (a) Qualification of machinery operators. (1) Only...

2010-07-01

414

46 CFR 182.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2013 CFR

...false Ventilation of spaces containing diesel machinery. 182.465 Section 182.465 Shipping...PASSENGER VESSELS (UNDER 100 GROSS TONS) MACHINERY INSTALLATION Specific Machinery Requirements 182.465 Ventilation...

2013-10-01

415

46 CFR 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Separation of machinery and fuel tank spaces from accommodation...NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation 169.631 Separation of machinery and fuel tank spaces from...

2012-10-01

416

49 CFR 393.130 - What are the rules for securing heavy vehicles, equipment and machinery?  

Code of Federal Regulations, 2011 CFR

...securing heavy vehicles, equipment and machinery? 393.130 Section 393.130 Transportation...securing heavy vehicles, equipment and machinery? (a) Applicability. The rules...transportation of heavy vehicles, equipment and machinery which operate on wheels or...

2011-10-01

417

49 CFR 393.130 - What are the rules for securing heavy vehicles, equipment and machinery?  

Code of Federal Regulations, 2014 CFR

...securing heavy vehicles, equipment and machinery? 393.130 Section 393.130 Transportation...securing heavy vehicles, equipment and machinery? (a) Applicability. The rules...transportation of heavy vehicles, equipment and machinery which operate on wheels or...

2014-10-01

418

46 CFR 91.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2013 CFR

...Standards in inspection of hulls, boilers, and machinery. 91.15-1 Section 91.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2013-10-01

419

46 CFR 91.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2010 CFR

...Standards in inspection of hulls, boilers, and machinery. 91.15-1 Section 91.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2010-10-01

420

46 CFR 169.631 - Separation of machinery and fuel tank spaces from accommodation spaces.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Separation of machinery and fuel tank spaces from accommodation...NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Machinery and Electrical Ventilation 169.631 Separation of machinery and fuel tank spaces from...

2010-10-01

421

46 CFR 32.56-40 - Category A machinery spaces: Insulation-T/ALL.  

Code of Federal Regulations, 2014 CFR

... 2014-10-01 false Category A machinery spaces: Insulation-T/ALL. 32... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-40 Category A machinery spaces: InsulationT/ALL....

2014-10-01

422

46 CFR 189.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2013 CFR

...Standards in inspection of hulls, boilers, and machinery. 189.15-1 Section 189.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2013-10-01

423

30 CFR 57.3460 - Maintenance between machinery or equipment and ribs.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Maintenance between machinery or equipment and ribs. 57...57.3460 Maintenance between machinery or equipment and ribs. Persons...perform maintenance work between machinery or equipment and ribs unless...

2012-07-01

424

30 CFR 77.404 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery and equipment; operation and maintenance...Mechanical Equipment 77.404 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2013-07-01

425

46 CFR 91.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2014 CFR

...Standards in inspection of hulls, boilers, and machinery. 91.15-1 Section 91.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2014-10-01

426

30 CFR 75.1725 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery and equipment; operation and maintenance... Miscellaneous 75.1725 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2011-07-01

427

46 CFR 32.56-40 - Category A machinery spaces: Insulation-T/ALL.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 false Category A machinery spaces: Insulation-T/ALL. 32... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-40 Category A machinery spaces: InsulationT/ALL....

2013-10-01

428

46 CFR 153.233 - Separation of tanks from machinery, service and other spaces.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Separation of tanks from machinery, service and other spaces. 153...153.233 Separation of tanks from machinery, service and other spaces. ...meeting in a cruciform joint: (1) Machinery spaces. (2) Service spaces....

2010-10-01

429

30 CFR 75.1725 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Machinery and equipment; operation and maintenance... Miscellaneous 75.1725 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2013-07-01

430

46 CFR 182.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2010 CFR

...false Ventilation of spaces containing diesel machinery. 182.465 Section 182.465 Shipping...PASSENGER VESSELS (UNDER 100 GROSS TONS) MACHINERY INSTALLATION Specific Machinery Requirements 182.465 Ventilation...

2010-10-01

431

46 CFR 189.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2010 CFR

...Standards in inspection of hulls, boilers, and machinery. 189.15-1 Section 189.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2010-10-01

432

46 CFR 182.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2011 CFR

...false Ventilation of spaces containing diesel machinery. 182.465 Section 182.465 Shipping...PASSENGER VESSELS (UNDER 100 GROSS TONS) MACHINERY INSTALLATION Specific Machinery Requirements 182.465 Ventilation...

2011-10-01

433

30 CFR 75.1725 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Machinery and equipment; operation and maintenance... Miscellaneous 75.1725 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2010-07-01

434

49 CFR 393.130 - What are the rules for securing heavy vehicles, equipment and machinery?  

Code of Federal Regulations, 2013 CFR

...securing heavy vehicles, equipment and machinery? 393.130 Section 393.130 Transportation...securing heavy vehicles, equipment and machinery? (a) Applicability. The rules...transportation of heavy vehicles, equipment and machinery which operate on wheels or...

2013-10-01

435

46 CFR 91.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2012 CFR

...Standards in inspection of hulls, boilers, and machinery. 91.15-1 Section 91.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2012-10-01

436

46 CFR 32.56-30 - Category A machinery spaces: Bulkheads and decks-T/ALL.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 false Category A machinery spaces: Bulkheads and decks-T/ALL... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-30 Category A machinery spaces: Bulkheads and...

2013-10-01

437

46 CFR 119.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2010 CFR

...false Ventilation of spaces containing diesel machinery. 119.465 Section 119.465 Shipping...ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS MACHINERY INSTALLATION Specific Machinery Requirements 119.465 Ventilation...

2010-10-01

438

49 CFR 173.222 - Dangerous goods in equipment, machinery or apparatus.  

Code of Federal Regulations, 2014 CFR

... false Dangerous goods in equipment, machinery or apparatus. 173.222 Section 173...173.222 Dangerous goods in equipment, machinery or apparatus. Hazardous materials in machinery or apparatus are excepted from the...

2014-10-01

439

46 CFR 32.56-30 - Category A machinery spaces: Bulkheads and decks-T/ALL.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Category A machinery spaces: Bulkheads and decks-T/ALL... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-30 Category A machinery spaces: Bulkheads and...

2012-10-01

440

46 CFR 174.200 - Damaged stability in machinery spaces for all OSVs.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Damaged stability in machinery spaces for all OSVs. 174.200 Section... 174.200 Damaged stability in machinery spaces for all OSVs. Each OSV...between any two watertight bulkheads in each machinery...

2010-10-01

441

40 CFR Appendix A to Part 438 - Typical Products in Metal Products and Machinery Sectors  

Code of Federal Regulations, 2011 CFR

...Typical Products in Metal Products and Machinery Sectors A Appendix A to Part 438...GUIDELINES AND STANDARDS METAL PRODUCTS AND MACHINERY POINT SOURCE CATEGORY Pt. 438, App...Typical Products in Metal Products and Machinery Sectors AEROSPACE Guided...

2011-07-01

442

46 CFR 71.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2012 CFR

...Standards in inspection of hulls, boilers, and machinery. 71.15-1 Section 71.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2012-10-01

443

46 CFR 32.56-40 - Category A machinery spaces: Insulation-T/ALL.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Category A machinery spaces: Insulation-T/ALL. 32... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-40 Category A machinery spaces: InsulationT/ALL....

2011-10-01

444

30 CFR 57.3460 - Maintenance between machinery or equipment and ribs.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Maintenance between machinery or equipment and ribs. 57...57.3460 Maintenance between machinery or equipment and ribs. Persons...perform maintenance work between machinery or equipment and ribs unless...

2010-07-01

445

29 CFR 1918.98 - Qualifications of machinery operators and supervisory training.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Qualifications of machinery operators and supervisory training... 1918.98 Qualifications of machinery operators and supervisory training. (a) Qualification of machinery operators. (1) Only...

2011-07-01

446

46 CFR 189.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2012 CFR

...Standards in inspection of hulls, boilers, and machinery. 189.15-1 Section 189.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2012-10-01

447

40 CFR Appendix A to Part 438 - Typical Products in Metal Products and Machinery Sectors  

Code of Federal Regulations, 2012 CFR

...Typical Products in Metal Products and Machinery Sectors A Appendix A to Part 438...STANDARDS (CONTINUED) METAL PRODUCTS AND MACHINERY POINT SOURCE CATEGORY Pt. 438, App...Typical Products in Metal Products and Machinery Sectors AEROSPACE Guided...

2012-07-01

448

46 CFR 32.56-40 - Category A machinery spaces: Insulation-T/ALL.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Category A machinery spaces: Insulation-T/ALL. 32... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-40 Category A machinery spaces: InsulationT/ALL....

2010-10-01

449

46 CFR 119.465 - Ventilation of spaces containing diesel machinery.  

Code of Federal Regulations, 2013 CFR

...false Ventilation of spaces containing diesel machinery. 119.465 Section 119.465 Shipping...ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS MACHINERY INSTALLATION Specific Machinery Requirements 119.465 Ventilation...

2013-10-01

450

76 FR 67181 - Windsor Machinery Co., Inc.; Notice of Preliminary Permit Application Accepted for Filing and...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Project No. 14256-000] Windsor Machinery Co., Inc.; Notice of Preliminary...Applications On August 15, 2011, Windsor Machinery Co., Inc. filed an application for...Applicant Contact: Sarah L. Bower, Windsor Machinery Co., Inc., 16 Orbit Lane,...

2011-10-31

451

46 CFR 71.15-1 - Standards in inspection of hulls, boilers, and machinery.  

Code of Federal Regulations, 2014 CFR

...Standards in inspection of hulls, boilers, and machinery. 71.15-1 Section 71.15-1...in inspection of hulls, boilers, and machinery. In the inspection of hulls, boilers, and machinery of vessels, the standards...

2014-10-01

452

49 CFR 173.222 - Dangerous goods in equipment, machinery or apparatus.  

Code of Federal Regulations, 2011 CFR

... false Dangerous goods in equipment, machinery or apparatus. 173.222 Section 173...173.222 Dangerous goods in equipment, machinery or apparatus. Hazardous materials in machinery or apparatus are excepted from the...

2011-10-01

453

33 CFR 150.620 - What are the requirements for protecting personnel from machinery?  

Code of Federal Regulations, 2013 CFR

...requirements for protecting personnel from machinery? 150.620 Section 150.620 ...requirements for protecting personnel from machinery? The deepwater port operator must...protected from the risks created by operating machinery through the use of guard devices...

2013-07-01

454

46 CFR 32.56-30 - Category A machinery spaces: Bulkheads and decks-T/ALL.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Category A machinery spaces: Bulkheads and decks-T/ALL... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-30 Category A machinery spaces: Bulkheads and...

2011-10-01

455

46 CFR 32.56-30 - Category A machinery spaces: Bulkheads and decks-T/ALL.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Category A machinery spaces: Bulkheads and decks-T/ALL... TANK VESSELS SPECIAL EQUIPMENT, MACHINERY, AND HULL REQUIREMENTS Structural...1975 32.56-30 Category A machinery spaces: Bulkheads and...

2010-10-01

456

9 CFR 318.24 - Product prepared using advanced meat/bone separation machinery; process control.  

Code of Federal Regulations, 2012 CFR

...using advanced meat/bone separation machinery; process control. 318.24 Section...using advanced meat/bone separation machinery; process control. (a) General...in mechanical meat/bone separation machinery (i.e., AMR systems) that,...

2012-01-01

457

9 CFR 318.24 - Product prepared using advanced meat/bone separation machinery; process control.  

Code of Federal Regulations, 2013 CFR

...using advanced meat/bone separation machinery; process control. 318.24 Section...using advanced meat/bone separation machinery; process control. (a) General...in mechanical meat/bone separation machinery (i.e., AMR systems) that,...

2013-01-01

458

33 CFR 150.620 - What are the requirements for protecting personnel from machinery?  

Code of Federal Regulations, 2014 CFR

...requirements for protecting personnel from machinery? 150.620 Section 150.620 ...requirements for protecting personnel from machinery? The deepwater port operator must...protected from the risks created by operating machinery through the use of guard devices...

2014-07-01

459

30 CFR 75.1725 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Machinery and equipment; operation and maintenance... Miscellaneous 75.1725 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2012-07-01

460

30 CFR 75.1725 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 2014-07-01 false Machinery and equipment; operation and maintenance... Miscellaneous 75.1725 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2014-07-01

461

30 CFR 77.404 - Machinery and equipment; operation and maintenance.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Machinery and equipment; operation and maintenance...Mechanical Equipment 77.404 Machinery and equipment; operation and maintenance. (a) Mobile and stationary machinery and equipment shall be...

2011-07-01

462

29 CFR 1918.98 - Qualifications of machinery operators and supervisory training.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Qualifications of machinery operators and supervisory training... 1918.98 Qualifications of machinery operators and supervisory training. (a) Qualification of machinery operators. (1) Only...

2013-07-01

463

Global Design Optimization for Fluid Machinery Applications  

NASA Technical Reports Server (NTRS)

Recent experiences in utilizing the global optimization methodology, based on polynomial and neural network techniques for fluid machinery design are summarized. Global optimization methods can utilize the information collected from various sources and by different tools. These methods offer multi-criterion optimization, handle the existence of multiple design points and trade-offs via insight into the entire design space can easily perform tasks in parallel, and are often effective in filtering the noise intrinsic to numerical and experimental data. Another advantage is that these methods do not need to calculate the sensitivity of each design variable locally. However, a successful application of the global optimization method needs to address issues related to data requirements with an increase in the number of design variables and methods for predicting the model performance. Examples of applications selected from rocket propulsion components including a supersonic turbine and an injector element and a turbulent flow diffuser are used to illustrate the usefulness of the global optimization method.

Shyy, Wei; Papila, Nilay; Tucker, Kevin; Vaidyanathan, Raj; Griffin, Lisa

2000-01-01

464

Rotational Symmetry  

NSDL National Science Digital Library

With this interactive Java Sketchpad applet students use spatial reasoning and visualization to explore rotation of a quadrilateral. The vertices and the center of rotation can be moved. Also included are tasks that focus the learner's manipulations.

2011-01-01

465

Rotational geophone  

SciTech Connect

A combination velocity and rotational geophone apparatus is described for obtaining data for seismic records representing the direction of propagation of shear waves in a seismic wave, the apparatus comprising: a velocity geophone; and a rotational geophone, the rotational geophone being disposed in relation to the velocity geophone to respond to the rate of rotational waves in a plane including the sensitive axis of the velocity geophone.

Cowles, C.S.

1986-07-29

466

46 CFR 42.15-35 - Machinery space openings.  

Code of Federal Regulations, 2012 CFR

(a) Machinery space openings in position 1 or 2 shall be properly framed and efficiently enclosed by steel casings of ample strength, and where the casings are not protected by other structures their strength shall be specifically...

2012-10-01

467

46 CFR 42.15-35 - Machinery space openings.  

Code of Federal Regulations, 2010 CFR

(a) Machinery space openings in position 1 or 2 shall be properly framed and efficiently enclosed by steel casings of ample strength, and where the casings are not protected by other structures their strength shall be specifically...

2010-10-01

468

36. DETAILS FOR SCREENING MACHINERY, DEER ISLAND PUMPING STATION, METROPOLITAN ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

36. DETAILS FOR SCREENING MACHINERY, DEER ISLAND PUMPING STATION, METROPOLITAN WATER AND SEWERAGE BOARD, METROPOLITAN SEWERAGE WORKS, DECEMBER 1909. Aperture card 6611-1 - Deer Island Pumping Station, Boston, Suffolk County, MA

469

17. VIEW, LOOKING WEST, SHOWING BRIDGE MACHINERY HOUSE ON FIXED ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. VIEW, LOOKING WEST, SHOWING BRIDGE MACHINERY HOUSE ON FIXED SPAN - New York, New Haven & Hartford Railroad, Groton Bridge, Spanning Thames River between New London & Groton, New London, New London County, CT

470

7. Interior view of machinery looking at window of east ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

7. Interior view of machinery looking at window of east wall of 1953 addition, view to northeast. - Ellsworth Air Force Base, Waste Water Treatment Plant, Ellsworth Street, Blackhawk, Meade County, SD

471

46. Interior detail of barge crane engine house with machinery. ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

46. Interior detail of barge crane engine house with machinery. Lambert Hoisting Engine Company Winder Powered by A Gray Marine Diesel. - Barbour Boat Works, Tryon Palace Drive, New Bern, Craven County, NC

472

The western river steamboat: structure and machinery, 1811 to 1860  

E-print Network

steamboat type by analyzing archaeological data and historic sources. This information is used to create a thorough study of steamboat construction and machinery. The first steamboat on the western rivers was built by Robert Fulton in 1811. In the next...

Kane, Adam Isaac

2001-01-01

473

26. DETAIL OF HEADGATE HOIST MACHINERY, TWIN FALLS MAIN CANAL. ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

26. DETAIL OF HEADGATE HOIST MACHINERY, TWIN FALLS MAIN CANAL. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

474

Development of a versatile controller system for textile machinery  

Microsoft Academic Search

A versatile controller system has been developed that is essential for the automation of textile machinery such as a loom\\u000a or a braiding machine. Sensors and actuators needed for the automation of general textile machinery were determined and the\\u000a electronic circuitry for the communication between them and the controller were designed. A dedicated software has been developed\\u000a that can input

Sungmin Kim; Joon Seok Lee

2011-01-01

475

8. MACHINERY SHED STORAGE ROOM ADDITION DETAIL SHOWING MATRIX OF ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

8. MACHINERY SHED STORAGE ROOM ADDITION DETAIL SHOWING MATRIX OF NAILS USED TO ADHERE PORTLAND CEMENT PLASTER, SOUTH ADOBE WALL ADJACENT TO WINDOW Note: Photographs Nos. AZ-159-A-9 through AZ-159-A-10 are photocopies of photographs. The original prints and negatives are located in the SCS Tucson Plant Materials Center, Tucson, Arizona. Photographer Ted F. Spaller. - Tucson Plant Material Center, Machinery Shed, 3241 North Romero Road, Tucson, Pima County, AZ

476

65. CALIFORNIA STREET CABLE RAILWAY WINDING MACHINERY: Photocopy of ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

65. CALIFORNIA STREET CABLE RAILWAY - WINDING MACHINERY: Photocopy of February 1955 photograph showing the winding machinery of the California Street Cable Railroad. The two suspended sheaves on the right of the photograph bore down on the cable as it left the winders, supplying tension to the cable and eliminating the need for a long tension run. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

477

Home and Farm Security Machinery and Equipment Identification.  

E-print Network

73 Fibme and Farm Security -m Machinery and Equipment identification Home and Farm Security chinery and Equipment Identification *Gary S. Nelson is no longer just an urban problem. d burglaries in rural communities have to an alarming... degree. More than half of committed in rural America are urglaries, and many farm thefts go unre- pays for rural crime losses? rmer pays for the millions of dollars lost eft of farm machinery. Too often these are simply written off in higher...

Nelson, Gary S.

1982-01-01

478

Non-synchronous rotating damping effects in gyroscopic rotating systems  

NASA Astrophysics Data System (ADS)

The effects of non-synchronous rotating damping, i.e., of energy dissipation in elements rotating at a speed different from that of the main rotor, on the dynamic behaviour of the latter have been already studied in a previous paper (J. Rotating Machinery 6 (6) (2000)) for the case of non-gyroscopic rotating systems. A planar model, namely the Jeffcott's rotor, was used. The present study is aimed at investigating, through analytical and numerical models, the behaviour of rotors having a non-negligible gyroscopic effect. The parameters of the system affecting the dynamic stability are identified and the threshold of instability is then computed. A sort of map of stability is provided to allow mechanical engineers predicting possibile range of instability for forward and backward whirling motions. An experimental validation on a simple test rig is presented in order to show the effectiveness of the proposed stability analysis. Non-synchronous rotating damping is implemented by using a non-synchronous electromagnetic damper based on eddy currents.

Brusa, Eugenio; Zolfini, Giacomo

2005-03-01

479

46 CFR 32.35-1 - Boilers and machinery-TB/ALL.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Boilers and machinery-TB/ALL. 32.35-1 Section 32.35-1 Shipping COAST...Auxiliary Machinery 32.35-1 Boilers and machineryTB/ALL. Boilers, main and auxiliary machinery, and piping...

2010-10-01

480

Alu Exonization Events Reveal Features Required for Precise Recognition of Exons by the Splicing Machinery  

E-print Network

Machinery Schraga Schwartz, Nurit Gal-Mark, Nir Kfir, Ram Oren, Eddo Kim, Gil Ast* Department of Human Abstract Despite decades of research, the question of how the mRNA splicing machinery precisely identifies machinery. We identified and characterized numerous features used by the splicing machinery to discriminate

Ast, Gil

481

Sodium carbonate poisoning  

MedlinePLUS

Sodium carbonate (also known as washing soda or soda ash) is a chemical found in many household and ... products. This article focuses on poisoning due to sodium carbonate. This is for information only and not for ...

482

Sodium in Drinking Water  

MedlinePLUS

... To reduce my sodium intake, should I buy bottled water instead of using tap water? For more information. ... To reduce my sodium intake, should I buy bottled water instead of using tap water? It is not ...

483

Sodium blood test  

MedlinePLUS

... of diuretics, or burns Too much salt or sodium bicarbonate in the diet Use of certain medicines, including birth control pills, corticosteroids, laxatives, lithium, and ... than normal sodium level is called hyponatremia. It may be due ...

484

Naproxen sodium overdose  

MedlinePLUS

Naproxen sodium is a non-steroidal anti-inflammatory drug (NSAID) used to relieve mild to moderate aches and pains. Naproxen sodium overdose occurs when someone accidentally or intentionally takes ...

485

Interaction of anesthetics with neurotransmitter release machinery proteins  

PubMed Central

General anesthetics produce anesthesia by depressing central nervous system activity. Activation of inhibitory GABAA receptors plays a central role in the action of many clinically relevant general anesthetics. Even so, there is growing evidence that anesthetics can act at a presynaptic locus to inhibit neurotransmitter release. Our own data identified the neurotransmitter release machinery as a target for anesthetic action. In the present study, we sought to examine the site of anesthetic action more closely. Exocytosis was stimulated by directly elevating the intracellular Ca2+ concentration at neurotransmitter release sites, thereby bypassing anesthetic effects on channels and receptors, allowing anesthetic effects on the neurotransmitter release machinery to be examined in isolation. Three different PC12 cell lines, which had the expression of different release machinery proteins stably suppressed by RNA interference, were used in these studies. Interestingly, there was still significant neurotransmitter release when these knockdown PC12 cells were stimulated. We have previously shown that etomidate, isoflurane, and propofol all inhibited the neurotransmitter release machinery in wild-type PC12 cells. In the present study, we show that knocking down synaptotagmin I completely prevented etomidate from inhibiting neurotransmitter release. Synaptotagmin I knockdown also diminished the inhibition produced by propofol and isoflurane, but the magnitude of the effect was not as large. Knockdown of SNAP-25 and SNAP-23 expression also changed the ability of these three anesthetics to inhibit neurotransmitter release. Our results suggest that general anesthetics inhibit the neurotransmitter release machinery by interacting with multiple SNARE and SNARE-associated proteins. PMID:23136341

McMillan, Kyle; Pike, Carolyn M.; Cahill, Anne L.; Herring, Bruce E.; Wang, Qiang; Fox, Aaron P.

2013-01-01

486

Sodium urine test  

MedlinePLUS

Urinary 24 hours sodium; Urine Na+ ... your kidneys are able to maintain or remove sodium from the urine. It may be used to ... For adults, normal urine sodium values are generally 20 mEq/L in a random urine sample and 40 to 220 mEq/L per day (mEq/ ...

487

Sodium in diet  

MedlinePLUS

... salt is 40% sodium; 1 teaspoon of table salt contains 2,300 mg of sodium. Healthy adults should limit sodium intake to 2,300 mg per day. Adults with high blood pressure should have no more than 1,500 mg ...

488

Rotating Wavepackets  

ERIC Educational Resources Information Center

Any free-particle wavepacket solution of Schrodinger's equation can be converted by differentiations to wavepackets rotating about the original direction of motion. The angular momentum component along the motion associated with this rotation is an integral multiple of [h-bar]. It is an "intrinsic" angular momentum: independent of origin and

Lekner, John

2008-01-01

489

FOREWORD: 26th IAHR Symposium on Hydraulic Machinery and Systems  

NASA Astrophysics Data System (ADS)

The 26th IAHR Symposium on Hydraulic Machinery and Systems, will be held in Beijing, China, 19-23 August 2012. It is jointly organized by Tsinghua University, State Key Laboratory of Hydro Science and Hydraulic Engineering, China, Jiangsu University, Xi'an University of Technology, China Agricultural University, National Engineering Research Center of Hydropower Equipment and Dongfang Electric Machinery Co., Ltd. It is the second time that China hosts such a symposium. By the end of 2011, the China electrical power system had a total of 1 050 GW installed power, out of which 220 GW was in hydropower plants. The energy produced in hydropower facilities was 662.6 TWh from a total of 4,720 TWh electrical energy production in 2011. Moreover, in 2020, new hydropower capacities are going to be developed, with a total of 180 GW installed power and an estimated 708 TWh/year energy production. And in 2011, the installed power of pumped storage stations was about 25GW. In 2020, the data will be 70GW. At the same time, the number of pumps used in China is increasing rapidly. China produces about 29,000,000 pumps with more than 220 series per year. By the end of 2011, the Chinese pumping system has a total of 950 GW installed power. The energy consumed in pumping facilities was 530 TWh in 2011. The pump energy consumption accounted for about 12% of the national electrical energy production. Therefore, there is a large market in the field of hydraulic machinery including water turbines, pump turbines and a variety of pumps in China. There are also many research projects in this field. For example, we have conducted National Key Research Projects on 1000 MW hydraulic turbine, and on the pump turbines with high head, as well as on the large capacity pumps for water supply. Tsinghua University of Beijing is proud to host the 26th IAHR Symposium on Hydraulic Machinery and Systems. Tsinghua University was established in 1911, after the founding of the People's Republic of China. It was molded into a polytechnic institute focusing on engineering in the nationwide restructuring of universities and colleges undertaken in 1952. At present, the university has 14 schools and 56 departments with faculties in science, engineering, humanities, law, medicine, history, philosophy, economics, management, education and art. The University now has over 25 900 students, including 13 100 undergraduates and 12 800 graduate students. As one of China's most renowned universities, Tsinghua has become an important institution for fostering talents and scientific research. The International Association of Hydro-Environment Engineering and Research (IAHR) particularly promotes the advancement and exchange of knowledge through working groups, specialty symposia, congresses, and publications on water resources, river and coastal hydraulics, risk analysis, energy, environment, disaster prevention, and industrial processes. The IAHR Committee on Hydraulic Machinery and Systems deals with the advancement of technology associated with the understanding of steady and unsteady flow characteristics in hydraulic machinery and conduit systems connected to the machinery. The technology elements include the fluid behaviour within machine components, hydro-elastic behaviour of machine components, cavitation and two phase flow in turbines and pumps, hydraulic machine and plant control systems, the use of hydraulic machines to improve water quality, and even considerations to improve fish survival in their passage through hydro plants. The main emphases of the IAHR Committee on Hydraulic Machinery and Systems are to stimulate research and understanding of the technologies associated with hydraulic machinery and to promote interaction between the machine designers, machine users, the academic community, and the community as a whole. Hydraulic machinery is both cost effective and environmentally friendly. The goals of the IAHR Committee on Hydraulic Machinery and Systems are to improve the value of hydraulic machinery to the end user, to the societies, and to improve societies u

Wu, Yulin; Wang, Zhengwei; Liu, Shuhong; Yuan, Shouqi; Luo, Xingqi; Wang, Fujun

2012-11-01

490

Integrated measure and control system for textile machinery  

NASA Astrophysics Data System (ADS)

In this paper, textile mechanical drive control is researched. Textile machinery integrated measure and control system is established. The system is composed of micro-computer, PLC, transducer, implement device, all kinds of detective components and industrial Ethernet etc. Technology of industrial field bus control and Internet technique are applied. The system is on a background of textile production technique, such as spring, woven, chemical fiber, non-woven, dyeing and finishing. A network based open integrated control system is developed. Various characteristics of production technique flow and textile machinery movement discipline are presented. Configuration software is introduced according to user's control tasks. Final remote automatic controls are finished. This may make development cost reduced, and development periods shortened. Some problems in textile machinery development process are solved, which may make transparency factory and remote development realized.

Liu, Yuantao; Zhao, Jinzhi; Zhao, Zexiang

2010-12-01

491

A block coupled solver development for hydraulic machinery applications  

NASA Astrophysics Data System (ADS)

In this paper, a fully coupled block algorithm for the solution of three-dimensional incompressible turbulent flows for use in hydraulic machinery is presented. Due to the simultaneous solution of momentum and continuity equations, implicit block coupling of pressure and velocity variables leads to faster convergence in respect to classical, loosely coupled, segregated algorithms of the SIMPLE family of algorithms. Special linear solver developments were also performed in order to extend the new fully coupled solver to high efficiency HPC simulations. These modifications allow the coupled solver to retain its improved performance and robustness in addition to mesh size scalability while solving hydraulic machinery type applications.

Mangani, L.; Buchmayr, M.; Darwish, M.

2014-12-01

492

Estimating Vibrational Powers Of Parts In Fluid Machinery  

NASA Technical Reports Server (NTRS)

In new method of estimating vibrational power associated with component of fluid-machinery system, physics of flow through (or in vicinity of) component regarded as governing vibrations. Devised to generate scaling estimates for design of new parts of rocket engines (e.g., pumps, combustors, nozzles) but applicable to terrestrial pumps, turbines, and other machinery in which turbulent flows and vibrations caused by such flows are significant. Validity of method depends on assumption that fluid flows quasi-steadily and that flow gives rise to uncorrelated acoustic powers in different parts of pump.

Harvey, S. A.; Kwok, L. C.

1995-01-01

493

39. REBUILT ENGINES AND WINDING MACHINERY: Photocopy of December 1906 ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

39. REBUILT ENGINES AND WINDING MACHINERY: Photocopy of December 1906 photograph of the steam engines and winding machinery at the Washington and Mason Street powerhouse. View towards west. United Railroads of San Francisco rebuilt the damaged engines and winders shown in CA-12-60 and CA-12-61. There are no cables strung over the winders in this photograph, indicating that the firm had yet to resume service. Note the rough shed erected over the engines to protect them from weather while work continued on the reconstruction of the powerhouse. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

494

Rotational aerophones.  

PubMed

Free rotational aerophones such as the bullroarer, which consists of a wooden slat whirled around on the end of a string, and which emits a loud pulsating roar, have been used in many ancient and traditional societies for ceremonial purposes. This article presents an experimental and theoretical investigation of this instrument. The aerodynamics of rotational behavior is elucidated, and relates slat rotation frequency to slat width and velocity through the air. Analysis shows that sound production is due to generation of an oscillating-rotating dipole across the slat, the role of the vortices shed by the slat being relatively minor. Apparent discrepancies between the behavior of a bullroarer slat and a slat mounted on an axle in a wind tunnel are shown to be due to viscous friction in the bearings of the wind-tunnel experiment. PMID:11931296

Fletcher, N H; Tarnopolsky, A Z; Lai, J C S

2002-03-01

495

46 CFR 45.149 - Machinery space openings.  

Code of Federal Regulations, 2013 CFR

(a) Machinery space openings in position 1 or 2 must be framed and enclosed by steel casings, and where the casings are not protected by other structures that meet the requirements of 45.109, their strength must be approved by the Commandant or the assigning...

2013-10-01

496

23. Historic drawing, Marine Railway. Details of Hauling Machinery, 1917. ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

23. Historic drawing, Marine Railway. Details of Hauling Machinery, 1917. Photographic copy of original. Boston National Historical Park Archives, Charlestown Navy Yard. BOSTS 13439, #551-7 - Charlestown Navy Yard, Marine Railway, Between Piers 2 & 3, on Charlestown Waterfront at west end of Navy Yard, Boston, Suffolk County, MA

497

26. Historic drawing, Marine Railway. Layout of Hauling Machinery, Building ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

26. Historic drawing, Marine Railway. Layout of Hauling Machinery, Building 24, 1917. Photographic copy of original. Boston National Historical Park Archives, Charlestown Navy Yark. BOSTS 13439, #551-15 - Charlestown Navy Yard, Marine Railway, Between Piers 2 & 3, on Charlestown Waterfront at west end of Navy Yard, Boston, Suffolk County, MA

498

1. Straighton view looking S at sugar cane crushing machinery ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

1. Straight-on view looking S at sugar cane crushing machinery showing three-roll cane mill, single reduction gear, flywheel and steam engine. - Hacienda Azucarera la Igualdad, Sugar Mill Ruins & Steam Engine, PR Route 332, Guanica, Guanica Municipio, PR

499

How to Anchor Machinery in Your School Shop  

ERIC Educational Resources Information Center

An industrial arts teacher explains the need to mount school shop machinery securely and describes methods of mounting permanently or temporarily. Reasons for anchoring machine tools are safety, accuracy of operation, and the prevention of damage to the machine. Five figures illustrate anchoring and leveling. (MF)

Walker, John R.

1978-01-01

500

Tower machinery house elevations, 1941, drawn by Waddell and Hardesty, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Tower machinery house elevations, 1941, drawn by Waddell and Hardesty, New York, New York. Drawing in collection of Caretaker Site Office, Philadelphia Naval Business Center, Philadelphia, Pennsylvania. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Lift Bridge, Mouth of Reserve Basin, League Island, Philadelphia, Philadelphia County, PA