Life Sciences Commons^™

Santa Clara Magazine, Volume 39 Number 4, Winter 1998, Santa Clara University

Santa Clara Magazine

10 - INSIDE OUT Francisco Jimenez, chairman of the University's Modern Languages and Literatures Department, recalls his grade-school days and immigrant family.

14 - FROM HALLOWED TO HIP Connie Hinckley, East Bay writer, examines the media's many-faceted portrayals of the priesthood, especially the controversial Father Ray of Nothing Sacred.

20 - SANTA CLARA'S ADOBE LEGACY Susan Vogel, San Francisco author and publisher, traces the history of the Adobe Lodge and describes its many roles in the life of the University.

26 - UNCOVERING THE REGION'S RICH PAST As the University clears land for new buildings, SCU archeologists and Native American …

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Iowa's Changing Forest Resources, Steven E. Jungst, Donald R. Farrar, Michael Brandrup

Journal of the Iowa Academy of Science: JIAS

After a period of decline in area extending from the 1850s to 1974, Iowa's forest area increased between 1974 and 1990. Although the area increase is encouraging, it may be fleeting. In addition, changes in forest stand structure and forest ownership patterns along with other pressures may make it difficult to maintain healthy forest ecosystems in the future. Notes from the original land survey in Iowa coupled with information from U.S. Forest Service forest inventories make it possible to look at changes in forest area and forest tree types. Unfortunately, similar long-term data do not exist to make possible a …

Food Preference In Drosophila Robusta And Drosophila Tripunctata Following Desiccation, Brad Horton

Presidential Scholars Theses (1990 – 2006)

Drosophila tripunctata and Drosophila robusta are local species trapped on the University of Northern Iowa preserve off of University Avenue. Drosophila literally means "lover of dew". Tripunctata means "three points", it has 3 points on its abdomen. Robusta means "robust", of which this species definitely is. D. tripunctata are a small species, which leaves them with a low volume/surface area ratio. This means they are more susceptible to environmental extremes, particularly the loss of water. D. robusta are a large and "robust" fly, and they are more tolerant of such environmental hardships. "Desiccation" is drying out, or to remove moisture. …

A New Synthetic Amphidiploid In Cucumis From A C. Sativus X C. Hystrix F1 Interspecific Hybrid, Jeffrey Adelberg, Jinfeng Chen, Jack E. Staub, Halina Skorupska, Billy Rhodes

Publications

CT. A synthetic amphidiploid was developed through organogenesis in tissue culturefrom an interspecific F1hybrid betweenCucumis sativus L. andC. hystrix Chakr. The resultsfrom flow cytometry indicated that, on average, 7.3% of the regenerants with unique morphology were chromosome-doubled F1hybrids. The 2C DNA content of the original F1hybrid was1.17 pg, and the 4C DNA content was 2.35 pg. Frequency of chromosome doubling between thetwo genotypes used in this study varied considerably.

Southern Deepwater Swamps, William Conner, Marilyn A. Buford

Publications

No abstract provided.

Front Matter

Journal of the Minnesota Academy of Science

No abstract provided.

Symposia

Journal of the Minnesota Academy of Science

Abstracts from the Symposia Papers given at the 66^th Annual Meeting for the Journal of the Minnesota Academy of Science.

Winchell Papers

Journal of the Minnesota Academy of Science

Abstracts from the Winchell Papers given at the 66^th Annual Meeting for the Journal of the Minnesota Academy of Science.

Winchell Posters

Journal of the Minnesota Academy of Science

Abstracts from the Winchell Posters given at the 66^th Annual Meeting for the Journal of the Minnesota Academy of Science.

Regeneration - The Road Not Taken, Raymond E. Sicard

Journal of the Minnesota Academy of Science

Regeneration and repair are mutually-exclusive, adaptive responses to injury. The events associated with each process are well characterized. However, cellular and molecular mechanisms for their regulation are only now beginning to be defined. Moreover, full appreciation for factors that predispose to these contrasting pathways is not yet available. This article presents a perspective on regeneration and repair that suggests specific relationships between these modes of responding to injury. Injury provokes a coordinated pattern of response to tissue damage. At the wound site, local events determine whether tissue restoration or replacement occurs. Interplay among parenchymal and stromal cells at the site …

Regenerative Biology: New Tissues For Old, David L. Stocum

Journal of the Minnesota Academy of Science

Throughout the human life cycle, tissues are regenerated either continuously to maintain tissue integrity in the face of normal cell turnover or in response to acute or chronic damage due to trauma or disease states. Blood, epithelia of skin and tubular organs, hair and nails, and bone marrow are examples of human tissues which regenerate continuously as well as in response to damage. Bone, muscle, adrenal cortex and kidney epithelium also regenerate in response to damage, and bone is continually remodeled in response to stress vectors.

The response of many other vital tissues to damage, however, is not regeneration but …

Wound Repair, Raymond E. Sicard, Jeffry D. Shearer, Michael D. Caldwell

Journal of the Minnesota Academy of Science

Following injury, a series of events is initiated that includes global and local reactions. Global reactions, such as inflammatory and immunological responses as well as adjustments in neural and endocrine status, are directed at marshaling the organism's resources for dealing with changes in its integrity and the potential threat of infection or other complications. Injury entails cell and tissue damage and often a physical breach in the barrier against the outside world (e.g., skin). Local reactions are exemplified by immediate hemostatic (e.g., blood clotting) events followed by changes in local cellular composition created by the inflammatory infiltrate and adjustments in …

Perspectives On Liver Regeneration, Janeen H. Trembley, Clifford J. Steer

Journal of the Minnesota Academy of Science

No abstract provided.

Acceleration Of Amphibian Forelimb Regeneration By Polypeptide Growth Factors, Gehan H. Fahmy, Raymond E. Sicard

Journal of the Minnesota Academy of Science

Growth factors are potentially important modulators of epimorphic regeneration. This study examined effects of intraperitoneal administration of selected growth factors on limb regeneration of adult newts, Notophthalmus viridescens. These agents stimulated regeneration, producing overlapping but nonidentical effects. Fibroblast growth factor-2 (FGF-2) and insulin-like growth factor I (IGF-I) stimulated bud emergence (8.3 ± 0.6 and 8.3 ± 0.7 days, respectively, vs 11.4 ± 1.1 days for controls). Progression to the cone stage was enhanced by both FGF-2 and transforming growth factor beta 5 ( TGF-~ 5) ; 14.6 ± 0.5 and 15.4 ± 0.4 days with FGF-2 and TGF-~5 , respectively, …

Tissue Engineering: At The Interface Between Engineering, Biology And Medicine, Brenda Ogle, Priti Gairola, Jodi Balik, Daniel L. Mooradian

Journal of the Minnesota Academy of Science

No abstract provided.

Vascular Endothelial Cell Growth Factor Expression In Endothelial Cells Is Induced By Mechanical Wounding, Paul J. Sammak, Phuong Oanh Tran, Timothy A. Olson

Journal of the Minnesota Academy of Science

Endothelial cell motility is central to several biological processes including angiogenesis during wound healing, reendothelialization of vessel walls after damage and neovascularization of tumors. However, control mechanisms that stimulate and inhibit cell movement are not known. Our objective is to understand the signals that initiate movement of endothelial cells. To examine these questions, we used an in vitro wound model of quiescent pulmonary artery endothelial cell monolayers which were stimulated to move by mechanical injury. Ca2+ signaling at the time of wounding produces long lasting effects on cell movement. We investigated whether new gene transcription after wounding might also stimulate …

Basic Fibroblast Growth Factor And Hepatocyte Growth Factor Content Of Wound, Repair, And Muscle Regeneration Fluids, Raymond E. Sicard, Wendy A. Mand

Journal of the Minnesota Academy of Science

Injury produces marked changes to the local environment. Changes in both diversity and availability of bioactive substances at wound sites might discriminate between repair and regeneration microenvironments and selectively drive events leading to final resolution. Among factors with potential relevance to wound repair and regeneration are basic fibroblast growth factor (bFGF) and hepatocyte growth factor (HGF). In this study, concentrations of these factors were determined in fluids derived from wound, repair, and regeneration-conditioned models using enzyme-linked immunosorbent assays. All fluids contained substantial concentrations of bFGF which rose 5- to I 5-fold as resolution to injury was achieved. Mean bFGF content …

Strictly Level-Decreasing Logic Programs, Pascal Hitzler, Anthony K. Seda

Computer Science and Engineering Faculty Publications

We study strictly level-decreasing logic programs (sld-programs) as defined earlier by the present authors. It will be seen that sld-programs, unlike most other classes of logic programs, have both a highly intuitive declarative semantics, given as a unique supported model, and are computationally adequate in the sense that every partial recursive function can be represented by some sld-program P. Allowing for a safe use of cuts, an interpreter based on SLDNF-resolution, as implemented for example in standard Prolog systems, is shown to be sound and complete with respect to this class of programs. Furthermore, we study connections between topological …

Review Of The Costa Rican Glaphyriinae (Lepidoptera: Pyraloidea: Crambidae), M. Alma Solis, David Adamski

USDA Systematic Entomology Laboratory

Thirty-one species of Glaphyriinae (Crambidae: Pyraloidea) from Costa Rica are reviewed, including nine new species: Aureopteryx olufsoni, Eupoca haakei, Glaphyria tetra spina, Glaphyria spinacrista, Glaphyria stellaspina, Glaphyria spinasingularis, Lipocosma rosalia, Lipocosma pitilla, and Lipocosma fonsecai. Lipocosma teliferalis Dyar is a junior synonym of Lipocosma punctissimalis Dyar, Lipocosma plagalis Schaus is a junior synonym of Lipocosma ausonialis (Druce), and Parambia gleanealis Dyar is a junior synonym of Parambia gnomosynalis Dyar. A key to the identification of Costa Rican species is provided. The presence of a pseudognathos in the male genitalia and modified scales on the area between CuA_{2 …}

Rhyparochromus Saturnius (Rossi) (Heteroptera: Lygaeoidea: Rhyparochromidae), A Palearctic Seed Bug Newly Discovered In North America, Thomas J. Henry, David Adamski

USDA Systematic Entomology Laboratory

The Palearctic rhyparochromid Rhyparochromus saturnius (Rossi) [Lygaeoidea] is reported for the first time in North America based on collections from 17 counties in California. Literature pertaining to this adventive species is reviewed, notes on its habits are given, and descriptions and photographs of the adult and fifth-instar nymph are provided to help distinguish it from other North American Rhyparochromidae. It is speculated that R. saturnius was introduced in international commerceoriginating from the Mediterranean Region, most likely Italy or nearby countries.

Bacterial Analysis Of Refrigerated Human Milk Following Infant Feeding, Rachel Renee Brusseau

CUP Undergraduate Research

The number of infants who are breastfed is on the rise, as is the number of women in the workforce. Many women who choose breastfeeding after returning to work, express milk during the day and store this milk for a future feeding. When infants do not finish a bottle of expressed breastmilk, doctors recommend unfinished portions be thrown away. This study examined bacterial levels in expressed, partially consumed breastmilk that was stored for 48 hours at 4-6° C. A portion of unconsumed milk was examined as a control. Samples were taken every 12 hours for bacterial analysis. Tests were performed …

The Adhesion Of Streptococcus Sa/Ivarius And Staphylococcus Aureus To Five Dental Composite Resins, Arturo James Lopez

Senior Research Projects

Resin composites are used for anterior esthetic restorative procedures. Breakdown areas between cavity preparations and restorative materials can provide potential sites of reinfection. Reducing the marginal breakdowns by using effective composite resins is important to reduce the amount of recurrent caries.

Each composite type was analyzed for bacterial adherence after bacterial exposure by microscopically counting them after staining. The purpose of this experiment was to measure and observe the ability of Streptococcus sa/ivarius and Staphylococcus aureus to adhere to five different resin composites (APH, Charisma, Herculite, Silux, and Z-100) using an in vitro assay.

It was found that there is …

Analyzing Seed Production And Germination In Pityopsis Ruthii, Jennifer M. Park

Senior Research Projects

No abstract provided.

A Qualitative Analysis Of Larval Drosophila Melanogaster Mitochondrial Dna Via The Polymerase Chain Reaction, Jason Gatling

Senior Research Projects

No abstract provided.

Environmental Stress Effects On Vigor, Mortality, And Growth In Northern Hardwood Forests Along A Pollution-Climate Gradient, Neil W. Macdonald, John A. Witter, David R. Reed, Andrew J. Burton, Kurt S. Pregitzer, Hal O. Liechty

Peer Reviewed Publications

Concern exists over the effects of interacting environmental stresses on the ecological integrity of temperate forests. Coincidence of sensitivity to drought, increasing occurrence of defoliation, and elevated pollutant deposition has produced speculation that northern hardwood forests may be susceptible to the increased climatic stresses projected for the Great Lakes region. The objective of our study was to examine relationships among environmental stress factors, vigor, mortality, and growth in northern hardwood forests located along a pollution-climate gradient in the Great Lakes region. Between 1987 and 1993, we quantified climatic variables, pollutant deposition, insect defoliation, and tree vigor and growth at five …

The Occurrence Of Snail Kite Nests With Four Fledglings In Florida, Victoria J. Dreitz, Malene R. Shannon

Wildlife Biology Faculty Publications

During 1997 we monitored Snail Kite nests throughout their range in central and southern Florida as part of a larger, ongoing study of demography of Snail Kites in Florida. We monitored 345 nests of which 7 (2.0%) contained 4 eggs. Of these large clutch nests, two nests successfully fledged four young. These nests were located 0.34 km apart in Water Conservation Area-3A (WCA-3A), which is a 23,700 ha impoundment located in Dade and Broward counties 25 km west of Miami to the north of Highway 41 and to the south of Interstate-75.

1998 Annual Meeting, Various Authors

Annual Reports

No abstract provided.

Self-Organization Of Foraging Behaviour: From Simplicity To Complexity Without Goals, Frederick D. Provenza, Juan J. Villalba, Carl D. Cheney, Scott J. Werner

Behavioral Education for Human, Animal, Vegetation, and Ecosystem Management (BEHAVE)

A herbivore faces challenges while foraging--ongoing changes in its physiological condition along with variation in the nutrient and toxin concentrations of foods, spatially and temporally--that make selecting a nutritious diet a vital affair. Foraging behaviours arise from simple rules that operate across levels of resolution from cells and organs to individuals and their interactions with social and physical environments. At all these levels, behaviour is a function of its consequences: a behaviour operating on the environment to induce changes is itself changed by those events. Thus, behaviour emerges from its own functioningbehaviour self-organizes-not from that of its surroundings. This ostensible …

Pigford, Shrader-Frechette & The Nrc Report On Yucca Mountain: Comment, David Okrent

RISK: Health, Safety & Environment (1990-2002)

Dr. Okrent raises several questions related to, e.g., the uneven application of the goal of intergenerational equity.