Life Sciences Commons^™

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 13 2012, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Letter From The Dean, Michael Vayda

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Development Of A Soil Carbon Index For Iowa Mineral Soils, M. M. Al-Kaisi, T. E. Fenton, J. G. Guzman, B. R. O'Neal

Journal of the Iowa Academy of Science: JIAS

A carbon index (Cl) is one of many soil quality indicators that depends on organic carbon concentration. One of the values of a soil carbon index is in determining the impact of agriculture practices (i.e., tillage, crop rotation, N management, etc.) on soil organic matter status of mineral soils. Interactions of climate, parent material, topography, time, and organisms including human activities influence soil organic carbon (SOC). This study developed a soil carbon index for mineral soil map units in Iowa using data collected by the Iowa Cooperative Soil Survey Laboratory and the USDA Soil Survey Laboratory for over 2,300 soil …

Perspectives: Developing And Defining Both Science And Science Education As Disciplines, Robert E. Yager

Journal of the Iowa Academy of Science: JIAS

The six "domains" have been identified as features for the "doing" of science. These six are: Concept, Process, Creativity, Attitude, Application, and Worldview. They are offered to affect teaching, student learning, as well as a new way of defining science. Concepts and Processes often are the only two typically used to define school and college science content; Creativity and Positive Attitudes are added as two "enabling" domains; a fifth Domain is offered as a focus on the Application of typical concepts and process skills. It is the Domain where and how most people live and operate! The sixth Domain is …

Editorial Board & Iowa Academy Of Sciences Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Effects Of Berberine, Chelerythrine, And Sanguinarine On Proliferation In Four Human Immortalized Cell Lines, David S. Senchina, Nisarg B. Shah, Marc G. Busch

Journal of the Iowa Academy of Science: JIAS

Bloodroot (Sanguinaria canadensis L., Papaveraceae) is a plant rich in benzophenanchridine (isoquinoline) alkaloids such as sanguinarine and chelerychrine. Both isolated alkaloids and whole-tissue rhizome extracts have demonstrated in vitro anticarcinogenic (antiproliferacive) activity in limited immortalized cell culture models, but the relative contribution of various alkaloid constituents to whole-tissue extract activity, and whether or not various alkaloids may act synergistically, has not been investigated. We challenged four immortalized cell lines (Jurkat, K562, Ramos, U937) with various doses of chelerythrine, sanguinarine, and berberine (a structurally and functionally similar alkaloid absent from bloodroot), alone and in all possible combinations, and measured proliferation …

Table Of Contents (Back Cover)

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

Evidence From Detrital Zircon Ages For Middle Pennsylvanian Uplift And Drainage In The Source Area Of The Chariton Conglomerate And Marmaton Group Sandstones, Southern Iowa And Northern Missouri, Scott Mcfadden, Steven H. Emerman, Jane Pedrick Dawson, Kevin A. Rey, Tracy Kemp Anderson

Journal of the Iowa Academy of Science: JIAS

The Chariton Conglomerate is a quartz/limestone conglomerate of Middle Pennsylvanian age sparsely exposed in southern Iowa and northern Missouri. In Iowa it is characterized by quartz granules and rounded crinoid columnals. The objective of this study was to use detrital zircon ages to determine the provenance of the Chariton Conglomerate and possibly associated Marmaton Group sandstone beds. Detrital zircon ages were obtained for five conglomerate and two sandstone beds of the Chariton Conglomerate in Iowa, three conglomerate beds of the Chariton Conglomerate in Missouri, and two sandstone beds of the Marmaton Group in Iowa. According to the Kolmogorov-Smirnoff Test, the …

Harlan's Ground Sloth (Paramylodon Harlant) (Xenarthra: Mylodontidae) From The Late Pleistocene (Rancholabrean) Of Iowa, H. Gregory Mcdonald

Journal of the Iowa Academy of Science: JIAS

Harlan's ground sloth, Paramylodon harlani, is documented for the first time from Iowa. The record is based on a fifth metacarpal recovered from a gravel bar within West Tarkio Creek, Page County. While the specimen was not found in situ, and could not be radiocarbon dated, the local geology suggests that it was probably derived from sediments that post-date Peorian loess deposition and is late Wisconsinan in age. This specimen extends the range of Paramylodon 350 km ro the northeast of the closest previously known locality. Its size is slightly larger than average for other late Pleisrocene (Rancholabrean) …

Educators Of Prospective Teachers Hesitate To Embrace Evolution Due To Deficient Understanding Of Science/Evolution And High Religiosity, Guillermo Paz-Y-Miño-C, Avelina Espinosa

Arts & Sciences Faculty Publications

Acceptance of evolution by educators of prospective teachers remains superficially studied despite their role in having mentored schoolteachers whose weak support of evolution is known. Here, we contrast the views of New England educators of prospective teachers (n = 62; 87% Ph.D./doctorate holders in 32 specializations) with those of the general faculty (n = 244; 93% Ph.D./doctorate holders in 40 disciplines), both members of 35 colleges and universities, and with college students (n = 827; subsample of the 35 institutions) who were polled on: (1) the controversy evolution vs. creationism vs. intelligent design (ID), (2) their understanding of how science/evolution …

Student Perception Of Relevance Of Biology Content To Everyday Life: A Study In Higher Education Biology Courses, Agnes Rose Himschoot

Faculty Scholarship – Biology

The purpose of this mixed method case study was to examine the effects of methods of instruction on students’ perception of relevance in higher education non-biology majors’ courses. Nearly ninety percent of all students in a liberal arts college are required to take a general biology course. It is proposed that for many of those students, this is the last science course they will take for life. General biology courses are suspected of discouraging student interest in biology with large enrollment, didactic instruction, covering a huge amount of content in one semester, and are charged with promoting student disengagement with …

Explore, Educate, Expand: The Exploratorium’S Education Abroad Youth Program, Nina Rubin

Capstone Collection

This capstone describes the design of an outbound, education abroad program that will take place in Dharamsala, India over a five-week period. It will bring together young adults from the U.S. and Tibet for an intercultural learning experience. The program will provide hands-on opportunities for participants to be engaged in academic, philosophical and personal growth. The educational workshops and activities will be centered on neuroscience, meditation, and Buddhist conceptions of science and the natural world. At the same time, themes of intercultural communication and competence will be explored in-depth.

As a foundation, the program will build from an existing partnership …

Optimizing Chronic Slow Breathing Training To Cause A Therapeutic Effect On Heart Rate Variability, Jennifer Joy Brown

Human Movement Sciences Theses & Dissertations

Heart rate variability (HRV) is a valid and reliable tool that can be used to determine the basic state of an individual's autonomic health. The current study attempted to establish the minimum frequency of breathing practice necessary to produce a therapeutic effect on HRV over the course of a four-week period with four different treatment groups, specifically, groups that practiced a slow breathing protocol for either 2, 3 or 5 times per week, and a control group. Forty-three subjects (14 males, 29 females), ages 18–50 years, were screened, pre-tested, matched for sex, age and HRV, assigned to a specific group …

In Memoria: Art Fry, 1921-2011, Collis Geren

Journal of the Arkansas Academy of Science

No abstract provided.

Effect Of Process-Oriented Guided-Inquiry Learning On Non-Majors Biology Students' Understanding Of Biological Classification, Breann Marie Wozniak

All Graduate Theses, Dissertations, and Other Capstone Projects

The purpose of this study was to examine the effect of process-oriented guided-inquiry learning (POGIL) on non-majors college biology students' understanding of biological classification. This study addressed an area of science instruction, POGIL in the non-majors college biology laboratory, which has yet to be qualitatively and quantitatively researched. A concurrent triangulation mixed methods approach was used. Students' understanding of biological classification was measured in two areas: scores on pre and posttests (consisting of 11 multiple choice questions), and conceptions of classification as elicited in pre and post interviews and instructor reflections. Participants were Minnesota State University, Mankato students enrolled in …

Oyster Reef In The Classroom – A Hands-On Laboratory Approach, Chesapeake Bay National Estuarine Research Reserve In Virginia

Reports

Grade Level: 7

Subject Area: Life Science

Students will examine different species found on an oyster reef in the Chesapeake Bay. Students will use a microscope and a dichotomous key to help them determine the different organisms being viewed. Students will draw conclusions based on the observed adaptations of the organisms about how the organism utilizes the oyster reef. Students will practice scientific sketching and become familiar with how to use a field guide and dichotomous key.

Strategic Discussions For Nebraska: Opportunities For Nebraska -- Food Scarcity, Mary Garbacz

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

Strategic Discussions for Nebraska is a program in the University of Nebraska-Lincoln Institute of Agriculture and Natural Resources that produces an annual publication called Opportunities for Nebraska, focusing on a different topic each year. The publication is produced in hard copy and also is available online at www.sdn.unl.edu.

The content for each publication is produced by UNL students enrolled in a Magazine Writing course each spring semester, taught by the SDN coordinator. Students conduct interviews with UNL researchers and write stories for inclusion in the publication. The interviews are captured on video and are edited into video montages, …

Frankenfoods: Are We Bioengineering Our Children And What Can Curriculum Do?, Patra Rickman

Electronic Theses and Dissertations

In this dissertation I explore the effect of biotechnology and food production on children’s physical and mental health. What we eat affects our well-being and unknowingly, we have little control of what exactly we are consuming. Children have even less control and feel the effects of additives and chemicals more than adults. Many of the effects of bioengineered foods are unknown at this time. My dissertation will be a theoretical exploration of biotechnology in food using a bioethical critical perspective. I use my personal experience and research to examine the effects of processed and genetically engineered foods on people, especially …

Have You Considered High School Peer Health Educators?, Mary C. Schutten

Mary C. Schutten

No abstract provided.

Extractive Metallurgy Of Copper, Fathi Habashi

Fathi Habashi

The Exclusion Of Black Women From National Leadership Positions In The United States: Taxation With Limited Representation, Amadu Jacky Kaba

Amadu Jacky Kaba

This article claims that the United States is progressing well when examined through the racial and cultural diversity of its young people aged 29 and younger with earned doctorates. The data show that females in general and Asian and Black females in particular are earning very high proportions of doctorate degrees among individuals aged 29 and younger in 2009 and 2008. For example, of the 117,000 doctorate degrees (Ph.D., Ed.D., etc.) held by individuals in the US aged 25 - 29 in 2009, females accounted for 65,000 (55.6%), with Black females and Asian females accounting for 11.1% (13,000) and 10.3% …