Wood preservation : commercial pesticide applicator training (2008)

New 7/08/2M

University of Missouri publications

"MP 205, Revised July 1975""This is a list of popular University of Missouri publications. Most publications in this list are available to Missouri residents at county offices of the Cooperative Extension Service."--Page 2

Inert Gases in the Control of Museum Insect Pests

Describes in detail the techniques, materials, and operating parameters of successful insect eradication procedures developed at the Getty Conservation Institute and elsewhere

NASA technology utilization survey on composite materials

NASA and NASA-funded contractor contributions to the field of composite materials are surveyed. Existing and potential non-aerospace applications of the newer composite materials are emphasized. Economic factors for selection of a composite for a particular application are weight savings, performance (high strength, high elastic modulus, low coefficient of expansion, heat resistance, corrosion resistance,), longer service life, and reduced maintenance. Applications for composites in agriculture, chemical and petrochemical industries, construction, consumer goods, machinery, power generation and distribution, transportation, biomedicine, and safety are presented. With the continuing trend toward further cost reductions, composites warrant consideration in a wide range of non-aerospace applications. Composite materials discussed include filamentary reinforced materials, laminates, multiphase alloys, solid multiphase lubricants, and multiphase ceramics. New processes developed to aid in fabrication of composites are given

Farmstead Magazine, Harvest 1981

https://digitalmaine.com/farmstead_magazine/1046/thumbnail.jp

Index to 1983 NASA Tech Briefs, volume 8, numbers 1-4

Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage commercial application. This index for 1983 Tech Briefs contains abstracts and four indexes: subject, personal author, originating center, and Tech Brief Number. The following areas are covered: electronic components and circuits, electronic systems, physical sciences, materials, life sciences, mechanics, machinery, fabrication technology, and mathematics and information sciences

The global governance of trade in agriculture: the role of tariff and non-tariff measures illustrated with an example of agricultural exports from South Africa to the EU

Due to its importance to food security and employment, the agricultural sector is a source of international conflict and inherently vulnerable to shocks and insecurities in the past and present. Accordingly, nation-states view respective domesticagricultural sectors as an exception, which meritsprotectionism and which needs protection from the rigors of free market forces and international competition withoutincurring heavy social, economic and political costs. For that matter, states traditionally impose protectionist measures to guard domestic agricultural sectors from external shocks. Paradoxically, the implementation of widespread protectionist measures has led to increasing volatilities in the supply and demand of agricultural commodities, e.g. by causing subsidized surplus stock (Friedmann 1982: 86). Against the backdrop of deep structural frictions and the implementation of pervasive protectionist measures, intergovernmental organizations aim to liberalize the global governance of trade in agriculture

The global governance of trade in agriculture: the role of tariff and non-tariff measures illustrated with an example of agricultural exports from South Africa to the EU

Due to its importance to food security and employment, the agricultural sector is a source of international conflict and inherently vulnerable to shocks and insecurities in the past and present. Accordingly, nation-states view respective domesticagricultural sectors as an exception, which meritsprotectionism and which needs protection from the rigors of free market forces and international competition withoutincurring heavy social, economic and political costs. For that matter, states traditionally impose protectionist measures to guard domestic agricultural sectors from external shocks. Paradoxically, the implementation of widespread protectionist measures has led to increasing volatilities in the supply and demand of agricultural commodities, e.g. by causing subsidized surplus stock (Friedmann 1982: 86). Against the backdrop of deep structural frictions and the implementation of pervasive protectionist measures, intergovernmental organizations aim to liberalize the global governance of trade in agriculture

Pneumatic Hyperelastic Robotic End-Effector for Grasping Soft Curved Organic Objects

Pneumatically-driven soft robotic grippers can elastically deform to grasp delicate, curved organic objects with minimal surface damage. However, common actuators have complex geometries and are fabricated with ultra-soft hyperelastic elastomers not originally intended for scientific applications. The complexity of the actuator geometry and extreme nonlinearity of their material’s stress-strain behaviour make it difficult to predict the actuator’s deformation prior to experimentation. In this work, a compact soft pneumatic gripper made with polydimethylsiloxane (PDMS) is developed for grasping delicate organic objects, analyzed through computational modelling and experimentally validated. COMSOL Multiphysics is used to simulate the impact of geometrical parameters on the actuator’s behaviour, allowing for the refinement of the proposed geometry prior to fabrication. Optimal parameters are selected for fabrication, with experimental tests matching simulations within ± 1 mm. Gripper performance is evaluated for three actuator wall thicknesses in terms of contact area with target, contact force, and maximum payload before slippage. The comparative assessment between simulations and experiments demonstrate that the proposed soft actuators can be used in robotic grippers tailored for grasping delicate objects without damaging their surface. Furthermore, analysis of the actuators provides additional insight on how to design simple but effective soft systems