Investigators contracts

The study performed by Burns and Roe (BSR) shows that valve failures constitute the component category most responsible for the shutdown of PWR and BWR plants. This Investigation, contracted with SNL for DOE, identified the principal types and causes of valve failures that led to plant trips for the period from 12/72 to 12/78. The primary sources of data for the report were searches of the data base, the monthly Gray Books, Nuclear Power Experience publications, as well as discussions with utilities, valve manufacturers, and suppliers. 

The work is supported by the National and Sofia University Funds for Scientific Investigations, contracts no <51301/ 03 and no 67, respectively, and by the French-Bulgarian bilateral Program PAI-RILA 2/5. 

Laboratory hierarchy, inventory lists (history and actual state), standard operation procedures and their history, information about products, suppliers, and procurement, supervision of equipment, treatment of failures Completeness of investigation Contract checking, checking of produced or purchased products... 

Phosphodiesterase Inhibitors. Because of the complexity of the biochemical processes involved in cardiac muscle contraction, investigators have looked at these pathways for other means of dmg intervention for CHF. One of the areas of investigation involves increased cycHc adenosine monophosphate [60-92-4] (cAMP) through inhibition of phosphodiesterase [9025-82-5] (PDE). This class of compounds includes amrinone, considered beneficial for CHF because of positive inotropic and vasodilator activity. The mechanism of inotropic action involves the inhibition of PDE, which in turn inhibits the intracellular hydrolysis of cAMP (130). In cascade fashion, cAMP-catalyzed phosphorylation of sarcolemmal calcium-channels follows, activating the calcium pump (131). A series of synthetic moieties including the bipyridines, amrinone and milrinone, piroximone and enoximone, [77671-31-9], C22H22N2O2S, all of which have been shown to improve cardiac contractiUty in short-term studies, were developed (132,133). These dmgs... 

Ensure the replacement person is given access to the historical records of the toll contract, technology package, MOC packages, and incident investigations. 

The standard requires the supplier to investigate and confirm the manufacturing feasibility of proposed products in contract review and to record the results of the review. 

Only a few reactions of benzodithiadiazines have been investigated. In common with dithiatriazines 12.8, the anti-aromatic system 12.12 (R = H) undergoes a reversible 5,5 -cycloaddition with norbornadiene. The reaction of 12.12 (R = F) with triphenylphosphine results in a ring contraction to give the imino 2 -phosphane 12.13. ... 

P.E. Streigle, Activator Investigation For A Silver Oxide—Zinc Battery (U) , Catalyst Research Corp, Md, Rept No 2, AADLPA Contract No DA-28-017-AMC-3433(A) (1967)... 

Investigation of the Feasibility of Measuring the Chamber Temperature of Solid Propellant Rocket Motors by Using Microwave Attenuation Measurements , AFOSR-70-2444TR, Contract F44620-68-C-022, Utah Univ, Salt Lake City (1970) 33) M. Venugopalan, Reactions... 

L) J.W. Schaefer et al, Study of Reactions of Solid Propellant Combustion Products With Pyrolytic Graphite, Vol II , AFRPL-TR-68-116-Vol-2, Contract F0461-67-C-0047, Atlantic Res Corp, Alexandria (1968) M) D.E. Sikhia, RF and IR Signature Simulation Investigation , Rept No OR-9718, Contract F08635-68-C-0014, Martin Marietta Corp, Orlando (1968)... 

Flow through a convergent channel, either two-dimensional or axisymmetric, are probably the most investigated geometries (due to their connection with the technical die entry flow problem). Most of the other convergent flows could be derived from the abrupt contraction flow which is depicted schematically in Fig. 25. 

Smith et al. [13] are amongst the first to employ an abrupt contraction flow to investigate chain conformation. A modified version of Smith s design was used by Merrill and Leopairat [108], and later on by the Lausanne group [109] (Fig. 26)... 

Another type of gel expands and contracts as its structure changes in response to electrical signals and is being investigated for use in artificial limbs that would respond and feel like real ones. One material being studied for use in artificial muscle contains a mixture of polymers, silicone oil (a polymer with a (O—Si—O—Si—) — backbone and hydrocarbon side chains), and salts. When exposed to an electric field, the molecules of the soft gel rearrange themselves so that the material contracts and stiffens. If struck, the stiffened material can break but, on softening, the gel is reformed. The transition between gel and solid state is therefore reversible. 

Contribution No. 1791. This investigation was carried out in connection with a program of research on metals supported by contract N6onr-24432 between the California Institute of Technology and the Office of Naval Research. 

Interactions with xanthan were investigated for some GAX fractions of wheat bran [109]. Whereas, for lowly substituted GaMs a synergy in viscosity was observed at low total polymer concentrations, yielding a maximum of the relative viscosity at nearly equal proportions of both polysaccharides [124], the xanthan/xylan mixtures at the same experimental conditions showed no synergy. The observed decrease in the relative viscosity values upon addition of the xylan indicates that a certain interaction with xanthan takes place, but that it leads to a contraction in the hydrodynamic volume. The authors suggested that structural and conformational differences between GaM and GAX might be the reason for this observation. 

Approaches to Investigate the Energy Source of Muscle Contraction... 

APPROACHES TO INVESTIGATE THE ENERGY SOURCE OF MUSCLE CONTRACTION... 

---