315 research outputs found
Chemical thinning of plums and peaches
DURING the past decade the acreage of Japanese plums in Western Australia has increased by 10 percent, and production has risen by nearly 40 per cent.
Furthermore, almost 30 per cent, of our trees were still classified as non bearing in 1966, so rapid increases in production are certain to be recorded within the next few years
Osteoinductive PolyHIPE Foams as Injectable Bone Grafts
We have recently fabricated biodegradable polyHIPEs as injectable bone grafts and characterized the mechanical properties, pore architecture, and cure rates. In this study, calcium phosphate nanoparticles and demineralized bone matrix (DBM) particles were incorporated into injectable polyHIPE foams to promote osteoblastic differentiation of mesenchymal stem cells (MSCs). Upon incorporation of each type of particle, stable monoliths were formed with compressive properties comparable to control polyHIPEs. Pore size quantification indicated a negligible effect of all particles on emulsion stability and resulting pore architecture. Alizarin red calcium staining illustrated the incorporation of calcium phosphate particles at the pore surface, while picrosirius red collagen staining illustrated collagen-rich DBM particles within the monoliths. Osteoinductive particles had a negligible effect on the compressive modulus (âŒ30 MPa), which remained comparable to human cancellous bone values. All polyHIPE compositions promoted human MSC viability (âŒ90%) through 2 weeks. Furthermore, gene expression analysis indicated the ability of all polyHIPE compositions to promote osteogenic differentiation through the upregulation of bone-specific markers compared to a time zero control. These findings illustrate the potential for these osteoinductive polyHIPEs to promote osteogenesis and validate future in vivo evaluation. Overall, this work demonstrates the ability to incorporate a range of bioactive components into propylene fumarate dimethacrylate-based injectable polyHIPEs to increase cellular interactions and direct specific behavior without compromising scaffold architecture and resulting properties for various tissue engineering applications
The MBA as Careerist: An Analysis of Early-Career Job Change
This study examined the job changes of 680 early-career business school graduates. Although a number of anecdotal articles characterize MBAs as overly âcareeristâ and oriented toward job-hopping, little empirical research has focused on this issue. The research included a direct comparison of job-hopping behavior of MBAs with bachelor S degree graduates, taking into account a number of control variables, including demographic and economic variables. Results indicated that MBAs changed jobs less frequently than bachelor 5 degree graduates, even when a variety of other factors were controlled.Yeshttps://us.sagepub.com/en-us/nam/manuscript-submission-guideline
Recent radio talks
Recent Rural Radio Talks
Dairy Hygiene is Important; - D.C. Mickle
Farm Water Supplies; - K. Needham
Handling the Apple Crop; - K. Whitely
Renovation of Irrigated Pastures; - Dairying division
More About Lupinosis; - H. W. Bennetts
Progress in Doublegee Control; - Norman Halse
Changing Practices in Tobacco Growing in W.A.; - G. A. Pearce
Progress in doublegee control; - G.A. Pearce
Some Uses of Radio Isotopes in Agriculture; - E. N. Fitzpatrick
Guildford GrassâSign of a Run-Down Pasture; - R. A. Bettenay
Silage and when to feed it; - R. Bettenay
Ants in the Apiary; - R. S. Coleman
Bacterial Canker of Stone Fruits; - Olga M. Goss
Poison Plants in the Home Garden; - R. D. Royce
The Cabbage White Butterfly; - C. F. H. Jenkins
Summer Treatments for San Jose Scale; - C. F. H. Jenkins
Preparations for Fodder Conservation; - H.G. Cariss
Sudan Grass Survived Dry Summer; - R.A. Bettenay
Root Maggot Flies; - J. A. Button
Fallowing for Cropping; - A.S. Wild
Feeding for Milk Quality; - L. C. Snook
The Rabbitâ Friend or Foe. A. R. Tomlinso
A 'Multiple Lenses' Approach to Policy Change: the Case of Tobacco Policy in the UK
This article examines a period of rapid policy change following decades of stability in UK tobacco. It seeks to account for such a long period of policy stability, to analyse and qualify the extent of change, and to explain change using a 'multiple lenses' approach. It compares the explanatory value of policy network models such as punctuated equilibrium and the advocacy coalition framework, with models stressing change from 'above and below' such as multi-level governance and policy transfer. A key finding is that the value of these models varies according to the narrative of policy change that we select. The article challenges researchers to be careful about assuming the nature of policy change before embarking on explanation. While the findings of the case study may vary with other policy areas in British politics, the call for clarity and lessons from multiple approaches are widely applicable
On the Ethics of Trade Credit: Understanding Good Payment Practice in the Supply Chain
In spite of its commercial importance and signs of clear concern in public policy arenas, trade credit has not been subjected to systematic, extended analysis in the business ethics literature, even where suppliers as a stakeholder group have been considered. This paper makes the case for serious consideration of the ethics of trade credit and explores the issues surrounding slow payment of debts. It discusses trade debt as a kind of promise, butâ noting that not all promises are good onesâgoes on to develop an analysis of the ethics of trade credit grounded in an understanding of its fundamental purpose. Making a distinction between ââoperatingââ trade credit and ââfinancialââ trade credit, the paper provides an account of the maximum period for which it is appropriate for one company to delay payment to another from which it has purchased goods or services. The concern of commentators and policy makers that companies should not take too long to pay their debts is affirmed, but the understanding of what timely payment means is significantly finessed, with one conclusion being that, if debts have not already been settled according to acceptable standard terms of trade, cash should pass quickly back along the supply chain once the customer in the final product market has paid. The analysis has implications not only for companies that take credit but also for external parties that seek to rate companies or set regulations according to speed of paymentâan approach that is shown to be misleadingly simplistic, albeit well intentioned. A corresponding important responsibility for
suppliers, not to extend excessive credit (and thus act as a quasi-bank), also follows from the analysis developed. Having provided a novel analysis of an important business problem, the paper then discusses some of the related practical issues and makes suggestions for further research
Deformation-induced microstructural banding in TRIP steels
Microstructure inhomogeneities can strongly influence the mechanical properties of advanced high-strength steels in a detrimental manner. This study of a transformation-induced plasticity (TRIP) steel investigates the effect of pre-existing contiguous grain boundary networks (CGBNs) of hard second-phases and shows how these develop into bands during tensile testing using in situ observations in conjunction with digital image correlation (DIC). The bands form by the lateral contraction of the soft ferrite matrix, which rotates and displaces the CGBNs of second-phases and the individual features within them to become aligned with the loading direction. The more extensive pre-existing CGBNs that were before the deformation already aligned with the loading direction are the most critical microstructural feature for damage initiation and propagation. They induce micro-void formation between the hard second-phases along them, which coalesce and develop into long macroscopic fissures. The hard phases, retained austenite and martensite, were not differentiated as it was found that the individual phases do not play a role in the formation of these bands. It is suggested that minimizing the presence of CGBNs of hard second-phases in the initial microstructure will increase the formability
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