Teflon amorphous fluoropolymer (TAF) multi-walled carbon nanotube (MWCNT) suspensions have the potential for creating conductive coatings on insulating films for numerous applications. However, there are few studies on polymer MWCNT suspension properties and even fewer that use Teflon. To define mechanical and electrical property relationships, bilayer films of TAF-MWCNT were created with differing concentrations of MWCNTs. Nanoindentation revealed that addition of 8 wt% MWCNTs to TAF increased the elastic modulus by about 25% and hardness by about 15%. Conducting indentation showed 8 wt% MWCNT films exhibit uniform stable conductance once indentation depth exceeds several hundred nanometers. Films with lower concentrations of CNTs were insulating. The two techniques provide a unique description of structure property relationships in this suspension film system.

The present paper presents a ray analysis for a problem of technical importance in fragmentation studies. The problem is that of suddenly punching a circular hole in either isotropic or transversely isotropic plates subjected to a uniaxial tension field. The ray method, which involves only differentiation, integration, and simple algebra, is shown to be particularly useful in clarifying the propagation process of the resulting unloading waves and obtaining the attendant discontinuities of the various quantities involved. Numerical results obtained from the ray analysis are presented in graphical form and compared with those obtained by more elaborate schemes.

The Petawatt laser at Lawrence Livermore National Laboratory (LLNL) has opened a new regime of laser matter interactions in which the quiver motion of plasma electrons is fully relativistic with energies extending well above the threshold for nuclear processes. In addition to ∼few MeV ponderomotive electrons produced in ultra intense laser-solid interactions, we have found a high energy component of electrons extending to ∼100 MeV apparently from relativistic selffocusing and plasma acceleration in the underdense preformed plasma. The generation of hard bremsstrahlung, photonuclear reactions, and preliminary evidence for positron-electron pair production will be discussed.

The phosphorus fertilizer requirements and long term productivity of nitrogen-fertilized Gatton panic (Panicum maximum cv. Gatton) pastures, grazed by lactating dairy cows, were evaluated in a 7-year experiment. Cows grazed at 2·6 cows/ha on pastures that received annually 100 or 300 kg N/ha and each of 0, 22·5 or 45 kg P/ha. Cows received no energy supplements in years 1–3 and were offered molasses at 3·5 kg/day from year 4 to year 7. Cows grazed their experimental paddocks from the start of the wet season until they started to lose weight in the dry season.

In years 6 and 7 there was significantly less green pasture and leaf on offer in 300N pastures at 0P than with 22·5P and 45P. This was reflected in a reduced milk yield by cows at 300N/0P in these two years. There was no influence of rate of P fertilizer at 100N on milk yield in any year. Lactation milk yields at 300N in years 6 and 7 averaged 3930, 4310 and 4610 kg/cow (P<0·05) for 0P, 22·5P and 45P, respectively. Nitrogen fertilizer increased milk yield in each year (P<0·01) except the first. Milk yields at 100N and 300N averaged 2860 and 3320 kg/cow respectively in years 1–3 and 3720 and 4290 kg/cow in years 4–7.

The milk yield responses to P fertilizer were related to the greater amounts of pasture and green leaf on offer, which led to a higher proportion of leaf in the diet, and the response to P fertilizer was dependent on the rate of N fertilizer applied. Phosphorus intakes were estimated to be below that of published requirements for cows producing this quantity of milk. An annual model of P flow between plant, animal and soil pools demonstrated that at 100N/22·5P more P was returned to the soil as excreta (15·7 kg P/ha) than with 300N/22·5P (7·1 kg P/ha). The major pathway of return of P to the soil at 300N was through plant litter. Soil organic P was the largest, but least exploited, pool of phosphorus.

This study has illustrated how the demand for phosphorus by the plant in grazed pastures is modified by the input of N fertilizer, is poorly predicted from plant analysis and published standards for animal requirements, and indicates that a response in milk production may be mediated through the effects of P on leaf growth and not on dietary P content.

It is of the nature of a revolutionary conspiracy that it tends to leave as little trace as possible of its internal history; and it is not surprising that documentarv evidence of the activity of the supreme council of the Irish Republican Brotherhood is scanty. The documents printed below are for this reason of peculiar interest and importance.

The following list includes books and articles on Irish history in which the year 1970 is given in the work itself as the date of publication, together with Addenda for 1965-9. The list excludes current works of reference, parliamentary publications, writings on contemporary politics, and items in newspapers; reports of archaeological finds and literary and linguistic studies, presented without reference to their historical context; and writings of little scholarly value. Reviews or short notices of many of the items listed will be found in this journal.

The following list includes books and articles on Irish history in which the year 1969 is given in the work itself as the date of publication, together with Addenda for 1965–8. The list excludes current works of reference, parliamentary publications, writings on contemporary politics, and items in newspapers; reports of archaeological finds and literary and linguistic studies, presented without reference to their historical context; and writings of little scholarly value. Reviews or short notices of many of the items listed will be found in this journal.

The following list gives particulars of theses on Irish historical subjects, or on subjects having a distinct bearing on Irish history, which were successfully completed during 1969, or were in progress in January 1970, in the history departments of the universities of Ireland. The information has been supplied directly by the responsible supervisors or by the heads of departments.

The list is arranged in periods. Within each period subjects are placed in chronological order, those that extend over more than one period being entered under the first period to which they relate and cross-referenced under the second or later periods.