Life History of the Butternut Curculio, \u3ci\u3eConotrachelus Juglandis\u3c/i\u3e (Coleoptera: Curculionidae), in Michigan

(excerpt) The butternut curculio, Conotrachelus juglandis LeConte (Coleoptera: Curculionidae), injures the shoots and nuts of various species and hybrids of Juglans in eastern North America This insect was described in 1876 (LeConte, 1876); its life history has been studied in Connecticut (Britton and Kirk, 1912) and in West Virginia (Brooks, 1922). Its range, however, extends from the New England states through southern Canada to the Great Plains and south to Kansas, Alabama, and Georgia, contiguous with the natural range of butternut (J. cinema), its native host

Some Light and Temperature Effects on the Behavior of the Adult Pales Weevil, Hylobius Pales (Coleoptera: Curculionidae)

Adult pales weevils react to light and temperature cues regarding their movements in pine plantations. They remain at the base of their host trees during the day and move onto the trees after dark. A drop in light intensity to 2 fc triggers this response. Ambient temperature below 10°C curtails their movements. Weevils placed on the ground are photophobic at temperatures below 20°C and photophobic and thermophobic above 35°C. Orientation is erratic above 40°C and heat stupor occurs in a few minutes

Live Branches on Pine Stumps Deter Pales Weevil Breeding in Michigan (Coleoptera: Curculionidae)

Eastern white pine and Scotch pine stumps with living branches were unattractive to pales weevil for breeding. When feasible, leaving a few lower branches on Christmas tree stumps during harvest should prevent weevil buildup

Susceptibility and Injury of Some Hybrid Walnuts by the Butternut Curculio (Coleoptera: Curculionidae)

The butternut curculio, Conotrachelus juglandis LeConte (Coleoptera: Curculionidae), injures the shoots and nuts of various species and hybrids of Juglans in eastern North America. This insect was described in 1876 (LeConte, 1876); its life history has been studied in Connecticut (Britton and Kirk, 1912) and in West Virginia (Brooks, 1922). Its range, however, extends from the New England states through southern Canada to the Great Plains and south to Kansas, Alabama, and Georgia, contiguous with the natural range of butternut (J. cinerea), its native host

New Vertebral Laminae and Patterns of Serial Variation in Vertebral Laminae of Sauropod Dinosaurs

https://deepblue.lib.umich.edu/bitstream/2027.42/92460/1/Contributions32no7-c08-15-2012.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/92460/2/Contributions32no7-HR-c08-15-2012.pdfDescription of Contributions32no7-c08-15-2012.pdf : Contributions Vol 32, No7 Medium ResolutionDescription of Contributions32no7-HR-c08-15-2012.pdf : Contributions Vol 32, No 7 High Resolutio

Anatomical Terminology for the Sacrum of Sauropod Dinosaurs

http://deepblue.lib.umich.edu/bitstream/2027.42/89589/4/Contributions32no5-c12-23-2011.pd

Sauropod dinosaur phylogeny: critique and cladistic analysis

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73066/1/j.1096-3642.2002.00029.x.pd

Spent-beam refocusing analysis and multistage depressed collector design for a 75-W, 59- to 64-GHz coupled-cavity traveling-wave tube

A computational design technique for coupled-cavity tubes (TWTs) equipped with spent-beam refocusers (SBRs) and multistage depressed collectors (MDCs) is described. A large-signal multidimensional computer program was used to analyze the TWT-SBR performance and to generate the spent-beam models used for MDC design. The results of a design involving a 75-W, 59 to 64 GHz TWT are presented. The SBR and MDC designs are shown, and the computed TWT, SBR, and MDC performances are described. Collector efficiencies in excess of 94 percent led to projected overall TWT efficiencies in the 40-percent range

Flatness optimization of micro-injection moulded parts: The case of a PMMA microfluidic component

Micro-injection moulding (µ-IM) has attracted a lot of interest because of its potential for the production of low-cost, miniaturized parts in high-volume. Applications of this technology are, amongst others, microfluidic components for lab-on-a-chip devices and micro-optical components. In both cases, the control of the part flatness is a key aspect to maintaining the component's functionality. The objective of this work is to determine the factors affecting the flatness of a polymer part manufactured by µ-IM and to control the manufacturing process with the aim of minimizing the in-process part deformation. As a case study, a PMMA microfluidic substrate with overall dimensions of 10 mm diameter and 1 mm thickness was investigated by designing a µ-IM experiment having flatness as the experimental response. The part flatness was measured using a micro-coordinate measuring machine. Finite elements analysis was also carried out to study the optimal ejection pin configuration. The results of this work show that the control of the µ-IM process conditions can improve the flatness of the polymer part up to about 15 µm. Part flatness as low as 4 µm can be achieved by modifying the design of the ejection system according to suggested guideline

Model of the Radio Frequency (RF) Excitation Response from Monopole and Dipole Antennas in a Large Scale Tank

Good antenna-mode coupling is needed for determining the amount of propellant in a tank through the method of radio frequency mass gauging (RFMG). The antenna configuration and position in a tank are important factors in coupling the antenna to the natural electromagnetic modes. In this study, different monopole and dipole antenna mounting configurations and positions were modeled and responses simulated in a full-scale tank model with the transient solver of CST Microwave Studio (CST Computer Simulation Technology of America, Inc.). The study was undertaken to qualitatively understand the effect of antenna design and placement within a tank on the resulting radio frequency (RF) tank spectrum