Ghosts of the Past

Every institution has its skeletons. We\u27re looking for ours. Institutions across the nation are examining their histories and grappling with controversial elements – Confederate statues, founding leaders, building names and more. Archivist Rich Schmidt is digging into Linfield\u27s history

Following the Roots of Oregon Wine

Terroir is a French term widely used in wine circles to mean “the taste of the place.” The terroir of Oregon wine combines environmental and human elements to produce distinguishing flavors and reveals the histories of grape growers and winemakers in the state. A new archive at Linfield College, the Oregon Wine History Archive (OWHA), collects that history and makes it available to researchers and the public. Library professionals Rachael Cristine Woody and Rich Schmidt tell the story of OWHA’s origins and mission, which is to document all aspects of the wine industry by collecting and preserving historical materials such as photographs, diaries, planting and tasting notes, wine recipes, legislative records, and even bottles of wine. Over a dozen wineries, vineyards, individuals, and organizations have contributed to the collection —many of the area’s winemakers are committed to ongoing contributions to document Oregon wine’s past, present, and future terroir

The Roaring Twenties at Linfield

Archivist explores parallels between life at Linfield in the 1920s and 2020

Alumni Notes

News about Linfield alumn

Feedstock blending as a strategy for hydrothermal liquefaction: lipid-rich scum from primary sedimentation and wastewater sludge

One salient advantage of hydrothermal liquefaction (HTL) is the ability to process diverse feedstocks individually or as blends. This creates an opportunity for using wet organic waste feedstocks that in many cases pose a disposal liability. The low cost associated with the feedstock enables cost-effective deployment of smaller, decentralized processing plants that match the geographic availability of wet waste resources. Two underutilized sources of wet waste biomass are wastewater sludge and fats, oils, and greases (FOG). In the United States, these each represent about 20% of the total HTL biocrude production potential from wet wastes. In this study, the selected FOG stream is decanted scum from the primary sedimentation operation of the same wastewater treatment plant (WWTP) that provided the sludge. Among the types of FOG, wastewater scum is one of the more complex and challenging. Scum contains entrained water, plant matter like leaves and seeds, and bits of garbage (paper and plastic). For most other processes to access the lipids in scum, some combination of heating, filtering, and solvent extraction would be required, leading to costly and/or inefficient recovery. HTL is preferable because it is a wet process and the scum can be blended directly to capture the whole energy content in the blended feed. Using a blend of primary and secondary sludge from Central Contra Costa Sanitary District (CCCSD) and decanted scum from CCCSD primary sedimentation as the source of FOG, a blend of sludge and scum was successfully prepared and processed in a bench scale continuous flow HTL system. A total of 54 L of blended slurry was converted to 4.2 L of biocrude oil. The scum was blended with the sludge such that it represented 20 wt% of the total dry, ash-free (daf) solids in the feed. The resulting biocrude had a much lower density (0.95 g/cm3) than the biocrude from CCCSD sludge alone (0.99 g/cm3) leading to improved gravity separation from the aqueous phase. The biocrude was also lower in moisture. During the oral presentation, the focus will be on the process of feedstock selection, evaluation, and characteristics including detailed steps and equipment used to format the blended feedstock for use in the HTL reactor system. The poster will include data for the integrated process including mass balance, yields, and characterization of products

Perilesional edema in radiation necrosis reflects axonal degeneration

BACKGROUND: Recently, we characterized a Gamma Knife® radiation necrosis mouse model with various magnetic resonance imaging (MRI) protocols to identify biomarkers useful in differentiation from tumors. Though the irradiation was focal to one hemisphere, a contralateral injury was observed that appeared to be localized in the white matter only. Interestingly, this injury was identifiable in T2-weighted images, apparent diffusion coefficient (ADC), and magnetization transfer ratio (MTR) maps, but not on post-contrast T1-weighted images. This observation of edema independent of vascular changes is akin to the perilesional edema seen in clinical radiation necrosis. FINDINGS: The pathology underlying the observed white-matter MRI changes was explored by performing immunohistochemistry for healthy axons and myelin. The presence of both healthy axons and myelin was reduced in the contralateral white-matter lesion. CONCLUSIONS: Based on our immunohistochemical findings, the contralateral white-matter injury is most likely due to axonal degeneration

Monitoring a Tandem Dry Gas Seal's Secondary Seal

TutorialRotating equipment and instrument engineers working with dry gas seals should attend this tutorial to increase their knowledge of methods for monitoring secondary seals. Over the last several years a number of compressor manufactures have issued safety notices concerning the industries inability to properly detect secondary seal failures in a tandem dry gas seal arrangement. When a secondary seal failure is undetected, the potential for an uncontrolled process gas release increases, leading to risks indicated in the safety notices issued. This Tutorial will examine the methods of monitoring the secondary seal in a tandem dry gas seal arrangement and the means to detect a secondary seal failure. The information and diagrams in this tutorial do not provide detail design requirements for the total seal monitoring system only methods currently being used for monitoring the secondary seal

BS196: an old star cluster far from the SMC main body

We present B and V photometry of the outlying SMC star cluster BS196 with the 4.1-m SOAR telescope. The photometry is deep (to V~25) showing ~3 mag below the cluster turnoff point (TO) at Mv=2.5 (1.03 Msun). The cluster is located at the SMC distance. The CMD and isochrone fittings provide a cluster age of 5.0+-0.5 Gyr, indicating that this is one of the 12 oldest clusters so far detected in the SMC. The estimated metallicity is [Fe/H]=-1.68+-0.10. The structural analysis gives by means of King profile fittings a core radius Rc=8.7+-1.1 arcsec (2.66+-0.14 pc) and a tidal radius Rt=69.4+-1.7 arcsec (21.2+-1.2 pc). BS196 is rather loose with a concentration parameter c=0.90. With Mv=-1.89+-0.39, BS196 belongs to the class of intrinsically fainter SMC clusters, as compared to the well-known populous ones, which starts to be explored.Comment: 8 pages, 10 figures; accepted by MNRA

Prospectus, September 19, 1984

JONI MULLEN SIDELINED WITH KNEE INJURY; Space exploration pays for itself; News Digest; Letter to the editor-Avid Reader??; Silence; Taking up the gauntlet; All sides and wide range are staff goals; A personal view Living outside the \u27rules\u27; Excellent job at last?; PC Happenings; Mid-life changes is program topic; TV for parents and kids debuts; Students learn floral designs; Long-time employees retire; Students give reasons why they should be elected to Student Government; Author to speak on family strengths; Chuck Baldwin expands career programs; \u27The Wager\u27 PC production; Certified Professional Secretaries PC to host seminars; Parkland hosts Gregor exhibit; For 454 students loans are primary source for tuition; The Office on Aging; Creative Corner...Especially for you!!; What terrors lie hidden deep in Shelley\u27s mind?; Nothing Ventured Nothing gained; Advice from the Duodenum; Worry Wart; The Coming Battle; Companion; Floods; Starheart; Dark-Light; Hell: Future of Doom; \u27This is going to be an enjoyable period of employment; Religion strong influence in all facts of life; Classifieds; King writes realistic horror; \u2788 Rock\u27-top ten singles; Prince continues to rule; Radio announcers work harder than you think; Did You Know...; Cobra Striders hope to peak near end of season; Lady Cobras snatch Parkland Invitational Volleyball Tourneyhttps://spark.parkland.edu/prospectus_1984/1012/thumbnail.jp