USSR Space Life Sciences Digest, issue 11

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran (Editor); Radtke, Mike (Editor); Radtke, Mike (Editor); Radtke, Mike (Editor); Radtke, Mike (Editor); Radtke, Mike (Editor)

1987-01-01

This is the eleventh issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 54 papers recently published in Russian language periodicals and bound collections and of four new Soviet monographs. Selected abstracts are illustrated. Additional features include the translation of a paper presented in Russian to the United Nations, a review of a book on space ecology, and report of a conference on evaluating human functional capacities and predicting health. Current Soviet Life Sciences titles available in English are cited. The materials included in this issue have been identified as relevant to 30 areas of aerospace medicine and space biology. These areas are: adaptation, aviation physiology, biological rhythms, biospherics, body fluids, botany, cardiovascular and respiratory systems, cosmonaut training, developmental biology, endocrinology, enzymology, equipment and instrumentation, gastrointestinal systems, group dynamics, genetics, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, perception, personnel selection, psychology, and radiobiology.

USSR Space Life Sciences Digest, issue 20

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran (Editor); Donaldson, P. Lynn (Editor); Teeter, Ronald (Editor); Garshnek, Victoria (Editor); Rowe, Joseph (Editor)

1988-01-01

Abstracts of research in the areas of biological rhythms, body fluids, botany, endrocrinology, enzymology, exobiology, genetics, human performance, immunology, life support systems, mathematical modeling, and numerous other topics related to space and life sciences are given.

Antarctic news clips, 1991

NASA Astrophysics Data System (ADS)

1991-08-01

Published stories are presented that sample a year's news coverage of Antarctica. The intent is to provide the U.S. Antarctic Program participants with a digest of current issues as presented by a variety of writers and popular publications. The subject areas covered include the following: earth science; ice studies; stratospheric ozone; astrophysics; life science; operations; education; antarctic treaty issues; and tourism

USSR Space Life Sciences Digest, issue 15

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran (Editor); Teeter, Ronald (Editor); Garshnek, Victoria (Editor); Rowe, Joseph (Editor)

1988-01-01

This is the 15th issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 59 papers published in Russian language periodicals or presented at conferences and of two new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. An additional feature is a review of a conference devoted to the physiology of extreme states. The abstracts included in this issue have been identified as relevant to 29 areas of space biology and medicine. These areas are adaptation, biological rhythms, biospherics, body fluids, botany, cardiovascular and respiratory systems, endocrinology, enzymology, equipment and instrumentation, exobiology, genetics, habitability and environment effects, human performance, immunology, life support systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, perception. personnel selection, psychology, radiobiology, reproductive biology, and space biology and medicine.

USSR Space Life Sciences Digest, issue 21

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran; Donaldson, P. Lynn; Garshnek, Victoria; Rowe, Joseph

1989-01-01

This is the twenty-first issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 37 papers published in Russian language periodicals or books or presented at conferences and of a Soviet monograph on animal ontogeny in weightlessness. Selected abstracts are illustrated with figures and tables from the original. A book review of a work on adaptation to stress is also included. The abstracts in this issue have been identified as relevant to 25 areas of space biology and medicine. These areas are: adaptation, biological rhythms, body fluids, botany, cardiovascular and respiratory systems, cytology, developmental biology, endocrinology, enzymology, equipment and instrumentation, exobiology, gravitational biology, habitability and environmental effects, hematology, human performance, life support systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, operational medicine, perception, psychology, and reproductive system.

USSR Space Life Sciences Digest, issue 3

NASA Technical Reports Server (NTRS)

Hooke, L. R. (Editor); Radtke, M. (Editor); Garshnek, V. (Editor); Rowe, J. E. (Editor); Teeter, R. (Editor)

1985-01-01

This is the third issue of NASA's USSR Space Life Sciences Digest. Abstracts are included for 46 Soviet periodical articles in 20 areas of aerospace medicine and space biology and published in Russian during the second third of 1985. Selected articles are illustrated with figures and tables from the original. In addition, translated introductions and tables of contents for seven Russian books on six topics related to NASA's life science concerns are presented. Areas covered are adaptation, biospherics, body fluids, botany, cardiovascular and respiratory systems, endocrinology, exobiology, gravitational biology, habitability and environmental effects, health and medical treatment, immunology, life support systems, metabolism, microbiology, musculoskeletal system; neurophysiology, nutrition, perception, personnel selection, psychology, radiobiology, and space physiology. Two book reviews translated from the Russian are included and lists of additional relevant titles available in English with pertinent ordering information are given.

USSR Space Life Sciences Digest, issue 4

NASA Technical Reports Server (NTRS)

Hooke, L. R. (Editor); Radtke, M. (Editor); Garshnek, V. (Editor); Teeter, R. (Editor); Rowe, J. E. (Editor)

1986-01-01

The fourth issue of NASA's USSR Space Life Science Digest includes abstracts for 42 Soviet periodical articles in 20 areas of aerospace medicine and space biology and published in Russian during the last third of 1985. Selected articles are illustrated with figures and tables from the original. In addition, translated introductions and tables of contents for 17 Russian books on 12 topics related to NASA's life science concerns are presented. Areas covered are: adaptation, biological rhythms, biospherics, body fluids, botany, cardiovascular and respiratory systems, cytology, developmental biology, endocrinology, exobiology, habitability and environmental effects, health and medical treatment, hematology, histology, human performance, immunology, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, perception, personnel selection, psychology, and radiobiology. Two book reviews translated from the Russian are included and lists of additional relevant titles available in English with pertinent ordering information are given.

USSR Space Life Sciences Digest, issue 2

NASA Technical Reports Server (NTRS)

Hooke, L. R. (Editor); Radtke, M. (Editor); Garshnek, V. (Editor); Rowe, J. E. (Editor); Teeter, R. (Editor)

1985-01-01

The second issue of the bimonthly digest of USSR Space Life Sciences is presented. Abstracts are included for 39 Soviet periodical articles in 16 areas of aerospace medicine and space biology and published in Russian during the first half of 1985. Selected articles are illustrated with figures from the original. Translated introductions and tables of contents for 14 Russian books on 11 topics related to NASA's life science concerns are presented. Areas covered are: adaptation, biospheric, body fluids, botany, cardiovascular and respiratory systems, cybernetics and biomedical data processing, gastrointestinal system, group dynamics, habitability and environmental effects, health and medical treatment, hematology, immunology, life support systems, metabolism, musculoskeletal system, neurophysiology, psychology, radiobiology, and space biology. Two book reviews translated from Russian are included and lists of additional relevant titles available either in English or in Russian only are appended.

USSR Space Life Sciences Digest, issue 9

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran; Radtke, Mike; Teeter, Ronald; Rowe, Joseph E.

1987-01-01

This is the ninth issue of NASA's USSR Space Lifes Sciences Digest. It contains abstracts of 46 papers recently published in Russian language periodicals and bound collections and of a new Soviet monograph. Selected abstracts are illustrated with figures and tables from the original. Additional features include reviews of a Russian book on biological rhythms and a description of the papers presented at a conference on space biology and medicine. A special feature describes two paradigms frequently cited in Soviet space life sciences literature. Information about English translations of Soviet materials available to readers is provided. The abstracts included in this issue have been identified as relevant to 28 areas of aerospace medicine and space biology. These areas are: adaptation, biological rhythms, body fluids, botany, cardiovascular and respiratory systems, developmental biology, endocrinology, enzymology, equipment and instrumentation, gastrointestinal system, genetics, habitability and environment effects, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism, microbiology, morphology and cytology, musculoskeletal system, nutrition, neurophysiology, operational medicine, perception, personnel selection, psychology, radiobiology, and space biology and medicine.

USSR Space Life Sciences Digest, Issue 18

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran (Editor); Donaldson, P. Lynn (Editor); Teeter, Ronald (Editor); Garshnek, Victoria (Editor); Rowe, Joseph (Editor)

1988-01-01

This is the 18th issue of NASA's USSR Life Sciences Digest. It contains abstracts of 50 papers published in Russian language periodicals or presented at conferences and of 8 new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. A review of a recent Aviation Medicine Handbook is also included. The abstracts in this issue have been identified as relevant to 37 areas of space biology and medicine. These areas are: adaptation, aviation medicine, biological rhythms, biospherics, body fluids, cardiovascular and respiratory systems, cytology, developmental biology, endocrinology, enzymology, equipment and instrumentation, exobiology, gastrointestinal system, genetics, gravitational biology, group dynamics, habitability and environmental effects, hematology, human performance, immunology, life support systems, man-machine systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, perception, personnel selection, psychology, radiobiology, reproductive biology, space biology and medicine, and space industrialization.

USSR Space Life Sciences Digest, issue 16

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran (Editor); Teeter, Ronald (Editor); Siegel, Bette (Editor); Donaldson, P. Lynn (Editor); Leveton, Lauren B. (Editor); Rowe, Joseph (Editor)

1988-01-01

This is the sixteenth issue of NASA's USSR Life Sciences Digest. It contains abstracts of 57 papers published in Russian language periodicals or presented at conferences and of 2 new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. An additional feature is the review of a book concerned with metabolic response to the stress of space flight. The abstracts included in this issue are relevant to 33 areas of space biology and medicine. These areas are: adaptation, biological rhythms, bionics, biospherics, body fluids, botany, cardiovascular and respiratory systems, developmental biology, endocrinology, enzymology, exobiology, gastrointestinal system, genetics, gravitational biology, habitability and environmental effects, hematology, human performance, immunology, life support systems, man-machine systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, perception, personnel selection, psychology, radiobiology, reproductive biology, and space biology.

USSR Space Life Sciences Digest, issue 6

NASA Technical Reports Server (NTRS)

Hooke, L. R. (Editor); Radtke, M. (Editor); Teeter, R. (Editor); Rowe, J. E. (Editor)

1986-01-01

This is the sixth issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 54 papers recently published in Russian language periodicals and bound collections and of 10 new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. Additional features include a table of Soviet EVAs and information about English translations of Soviet materials available to readers. The topics covered in this issue have been identified as relevant to 26 areas of aerospace medicine and space biology. These areas are adaptation, biospherics, body fluids, botany, cardiovascular and respiratory systems, developmental biology, endocrinology, enzymology, exobiology, genetics, habitability and environment effects, health and medical treatment, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism., microbiology, morphology and cytology, musculoskeletal system, neurophysiology, nutrition, perception, personnel selection, psychology, radiobiology, reproductive biology, and space medicine.

USSR Space Life Sciences Digest, issue 7

NASA Technical Reports Server (NTRS)

Hooke, L. R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor)

1986-01-01

This is the seventh issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 29 papers recently published in Russian language periodicals and bound collections and of 8 new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. Additional features include two interviews with the Soviet Union's cosmonaut physicians and others knowledgable of the Soviet space program. The topics discussed at a Soviet conference on problems in space psychology are summarized. Information about English translations of Soviet materials available to readers is provided. The topics covered in this issue have been identified as relevant to 29 areas of aerospace medicine and space biology. These areas are adaptation, biospherics, body fluids, botany, cardiovascular and respiratory systems, developmental biology, endocrinology, enzymology, exobiology, genetics, habitability and environment effects, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism, microbiology, morphology and cytology, musculoskeletal system, neurophysiology, nutrition, perception, personnel selection, psychology, radiobiology, and space medicine.

USSR Space Life Sciences Digest, issue 19

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran (Editor); Donaldson, P. Lynn (Editor); Teeter, Ronald (Editor); Garshnek, Victoria (Editor); Rowe, Joseph (Editor)

1988-01-01

This is the 19th issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 47 papers published in Russian language periodicals or presented at conferences and of 5 new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. Reports on two conferences, one on adaptation to high altitudes, and one on space and ecology are presented. A book review of a recent work on high altitude physiology is also included. The abstracts in this issue have been identified as relevant to 33 areas of space biology and medicine. These areas are: adaptation, biological rhythms, biospherics, body fluids, botany, cardiovascular and respiratory systems, cytology, developmental biology, endocrinology, enzymology, biology, group dynamics, habitability and environmental effects, hematology, human performance, immunology, life support systems, man-machine systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, perception, personnel selection, psychology, radiobiology, and space biology and medicine.

USSR Space Life Sciences Digest, issue 8

NASA Technical Reports Server (NTRS)

Hooke, L. R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor); Teeter, R. (Editor)

1985-01-01

This is the eighth issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 48 papers recently published in Russian language periodicals and bound collections and of 10 new Soviet monographs. Selected abstracts are illustrated with figures and tables. Additional features include reviews of two Russian books on radiobiology and a description of the latest meeting of an international working group on remote sensing of the Earth. Information about English translations of Soviet materials available to readers is provided. The topics covered in this issue have been identified as relevant to 33 areas of aerospace medicine and space biology. These areas are: adaptation, biological rhythms, biospherics, body fluids, botany, cardiovascular and respiratory systems, cosmonaut training, cytology, endocrinology, enzymology, equipment and instrumentation, exobiology, gastrointestinal system, genetics, group dynamics, habitability and environment effects, hematology, human performance, immunology, life support systems, man-machine systems, mathematical modeling, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, personnel selection, psychology, reproductive biology, and space biology and medicine.

USSR Space Life Sciences Digest, Issue 10

NASA Technical Reports Server (NTRS)

Hooke, Lydia Razran; Radtke, Mike; Teeter, Ronald; Garshnek, Victoria; Rowe, Joseph E.

1987-01-01

The USSR Space Life Sciences Digest contains abstracts of 37 papers recently published in Russian language periodicals and bound collections and of five new Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. Additional features include the translation of a book chapter concerning use of biological rhythms as a basis for cosmonaut selection, excerpts from the diary of a participant in a long-term isolation experiment, and a picture and description of the Mir space station. The abstracts included in this issue were identified as relevant to 25 areas of aerospace medicine and space biology. These areas are adaptation, biological rhythms, biospherics, body fluids, botany, cardiovascular and respiratory systems, developmental biology, endocrinology, enzymology, group dynamics, habitability and environmental effects, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism, microbiology, morphology and cytology, musculosketal system, neurophysiology, nutrition, personnel selection, psychology, and radiobiology.

Mapping Climate Science Information Needs and Networks in the Northwest, USA through Evaluating the Northwest Climate Science Center Climate Science Digest

NASA Astrophysics Data System (ADS)

Gergel, D. R.; Watts, L. H.; Salathe, E. P.; Mankowski, J. D.

2017-12-01

Climate science, already a highly interdisciplinary field, is rapidly evolving, and natural resource managers are increasingly involved in policymaking and adaptation decisions to address climate change that need to be informed by state-of-the-art climate science. Consequently, there is a strong demand for unique organizations that engender collaboration and cooperation between government, non-profit, academic and for-profit sectors that are addressing issues relating to natural resources management and climate adaptation and resilience. These organizations are often referred to as boundary organizations. The Northwest Climate Science Center (NW CSC) and the North Pacific Landscape Conservation Cooperative (NP LCC) are two such boundary organizations operating in different contexts. Together, the NW CSC and the NP LCC fulfill the need for sites of co-production between researchers and managers working on climate-related issues, and a key component of this work is a monthly climate science newsletter that includes recent climate science journal articles, reports, and climate-related events. Our study evaluates the effectiveness of the climate science digest (CSD) through a three-pronged approach: a) in-depth interviews with natural resource managers who use the CSD, b) poll questions distributed to CSD subscribers, and c) quantitative analysis of CSD effectiveness using analytics from MailChimp distribution. We aim to a) map the reach of the CSD across the Northwest and at a national level; b) understand the efficacy of the CSD at communicating climate science to diverse audiences; c) evaluate the usefulness of CSD content for diverse constituencies of subscribers; d) glean transferrable knowledge for future evaluations of boundary management tools; and e) establish a protocol for designing climate science newsletters for other agencies disseminating climate science information. We will present results from all three steps of our evaluation process and describe their implications for future evaluations of climate science communications products and other boundary management tools in the field of natural resources management.

Digest of Key Science and Engineering Indicators, 2008. NSB-08-2

ERIC Educational Resources Information Center

National Science Foundation, 2008

2008-01-01

This digest of key science and engineering indicators draws primarily from the National Science Board's two-volume "Science and Engineering Indicators, 2008" report. The digest serves two purposes: (1) to draw attention to important trends and data points from across the chapters and volumes of "Science and Engineering Indicators, 2008," and (2)…

Teaching and Learning about the Earth. ERIC Digest.

ERIC Educational Resources Information Center

Lee, Hyonyong

This ERIC Digest investigates the earth and space science guidelines of the National Science Education Standards. These guidelines are frequently referred to as the earth system and include components such as plate tectonics, the water cycle, and the carbon cycle. This Digest describes the development of earth systems science and earth systems…

Science/Technology/Society in the Social Studies. ERIC Digest.

ERIC Educational Resources Information Center

Heath, Phillip A.

The current trend to include the relationships of science and technology to human societies in the social studies curriculum is the focus of this ERIC Digest. The Digest discusses: (1) major themes in education on science/technology/society (STS); (2) the rationale for emphasizing STS in the social studies; and (3) how to include STS in the…

Power of Your Pancreas: Keep Your Digestive Juices Flowing

MedlinePlus

... Issues Subscribe February 2017 Print this issue The Power of Your Pancreas Keep Your Digestive Juices Flowing ... your entire digestive system working properly. Related Stories Power to the Pelvis Battling a Bulging Hernia Keeping ...

Comparisons between students' learning achievements of their conventional instruction and the science, technology and social conceptual instructional design on digestion system issue of secondary students at the 10th grade level

NASA Astrophysics Data System (ADS)

Wichalek, Supattra; Chayaburakul, Kanokporn; Santiboon, Toansakul

2018-01-01

The purposes of this action research study were 1) to develop learning activities according to the instructional designing model of science, technology, and social (STS) on Digestion Issue, 2) to compare students' learning achievements between their learning activities with the conventional instructional (CIM) and conceptual instructional designing methods of science, technology, and social (STS) on digestion system of secondary students at the 10th grade level with a sample size of 35 experimental student group of their STS learning method, and 91 controlling group in two classes in the first semester in academic year 2016. Using the 4-Instructional Innovative Lesson Plans, the Students' Learning Behaviour Observing Form, the Questionnaire on Teacher Behaviour Interaction (QTBI), the Researcher's Recording Form, the Learning Activity Form, and the Parallel Learning Achievement Test (LAT) were assessed. The results of this research have found that; the Index of Item Objective Congruence (IOC) value ranged from 0.67 to 1.00; the difficulty values were 0.47 and 0.79 for the CIM and STS methods, respectively, the discriminative validity for the LAT was ranged from 0.20 to 0.75. The reliability of the QTBI was 0.79. Students' responses of their learning achievements with the average means scores indicted of the normalized gain values of 0.79 for the STS group, and 0.50 and 0.36 for the CIM groups, respectively. Students' learning achievements of their post-test indicated that of a higher than pre-test, the pre-test and post-test assessments were also differentiated evidence at the 0.05 levels for the STS and CIM groups, significantly. The 22-students' learning outcomes from the STS group evidences at a high level, only of the 9-students' responses in a moderate level were developed of their learning achievements, responsibility.

Digested disorder: Quarterly intrinsic disorder digest (July-August-September, 2013).

PubMed

Reddy, Krishna D; DeForte, Shelly; Uversky, Vladimir N

2014-01-01

The current literature on intrinsically disordered proteins grows fast. To keep interested readers up to speed with this literature, we continue a "Digested Disorder" project and represent a new issue of reader's digest of the research papers and reviews on intrinsically disordered proteins. The only 2 criteria for inclusion in this digest are the publication date (a paper should be published within the covered time frame) and topic (a paper should be dedicated to any aspect of protein intrinsic disorder). The current digest issue covers papers published during the third quarter of 2013; i.e., during the period of June, July, and September of 2013. Similar to previous issues, the papers are grouped hierarchically by topics they cover, and for each of the included paper a short description is given on its major findings.

Digested disorder

PubMed Central

Reddy, Krishna D; DeForte, Shelly; Uversky, Vladimir N

2014-01-01

The current literature on intrinsically disordered proteins grows fast. To keep interested readers up to speed with this literature, we continue a “Digested Disorder” project and represent a new issue of reader’s digest of the research papers and reviews on intrinsically disordered proteins. The only 2 criteria for inclusion in this digest are the publication date (a paper should be published within the covered time frame) and topic (a paper should be dedicated to any aspect of protein intrinsic disorder). The current digest issue covers papers published during the third quarter of 2013; i.e., during the period of June, July, and September of 2013. Similar to previous issues, the papers are grouped hierarchically by topics they cover, and for each of the included paper a short description is given on its major findings. PMID:28232877

Global Issues and Environmental Education. ERIC/CSMEE Digest.

ERIC Educational Resources Information Center

Trisler, Carmen E.

An action of an individual or a societal action that has an impact on other societies constitutes a "global issue." Global climate change, airborne toxins, ozone depletion, and solid waste management are a few of the global issues concerning the environment. This digest discusses methods by which students learn about global issues and…

Digesters and demographics: identifying support for anaerobic digesters on dairy farms.

PubMed

Sanders, D J; Roberts, M C; Ernst, S C; Thraen, C S

2010-11-01

The dairy industry in the United States is amidst a long-running trend toward fewer, larger dairy farms. This development has created a backlash in some communities over concerns such as odor, waste management, and environmental degradation. Separately, anaerobic digestion has advanced as a waste management technology that potentially offers solutions to some of these issues, providing odor control and a combustible biogas among other things. These digesters require significant capital investments. Voluntary consumer premiums for the renewable energy produced have been used in some instances as a means to move adoption of such systems toward financial feasibility. This project employed a survey to measure Ohio consumers' willingness to pay a premium for renewable energy produced by anaerobic digesters on dairy farms. Cluster analysis was used to segment consumers by willingness to pay, age, education, income, self-identified political inclination, and a composite variable that served as a proxy for respondents' environmental stewardship. Four distinctive groups emerged from the data. Older, less educated respondents were found to have the least amount of support for digesters on dairy farms, whereas politically liberal, environmentally proactive respondents demonstrated the strongest support. Well-educated, affluent respondents and young respondents fell between these 2 groups. Most large dairy farms are generally met with fairly negative responses from their local communities; in contrast, this research finds some popular support for anaerobic digestion technology. Going forward, establishing a positive link between support for anaerobic digesters and for their use on large dairies could open up a new route for less-contested large dairy farm developments. Evaluation of community demographics could become an important part of finding an optimal location for a large dairy farm. Copyright © 2010 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Teaching about the Life and Health of Cells. ERIC Digest.

ERIC Educational Resources Information Center

Haury, David L.

Modern technology in life and health sciences brings a new understanding to the study of cells and as a result, the National Science Education Standards emphasize understanding of science and technology. This ERIC Digest describes the central role of cell biology (cytology) in understanding these areas and explains conceptual difficulties and…

Student Science Teachers' Ideas of the Digestive System

ERIC Educational Resources Information Center

Cardak, Osman

2015-01-01

The aim of this research is to reveal the levels of understanding of student science teachers regarding the digestive system. In this research, 116 student science teachers were tested by applying the drawing method. Upon the analysis of the drawings they made, it was found that some of them had misconceptions such as "the organs of the…

Learning about the Human Genome. Part 2: Resources for Science Educators. ERIC Digest.

ERIC Educational Resources Information Center

Haury, David L.

This ERIC Digest identifies how the human genome project fits into the "National Science Education Standards" and lists Human Genome Project Web sites found on the World Wide Web. It is a resource companion to "Learning about the Human Genome. Part 1: Challenge to Science Educators" (Haury 2001). The Web resources and…

Systems Theory and the Earth Systems Approach in Science Education. ERIC Digest.

ERIC Educational Resources Information Center

Lee, Hyongyong

The systems approach provides a framework for integrating different scientific disciplines. This approach is used often in Earth Systems Education. This ERIC Digest describes the systems theory and its influence on science education. (Contains 16 references.) (YDS)

[The thirty years of Acta Genetica Sinica].

PubMed

Li, Shao-Wu; Zhou, Su; Xue, Yong-Biao; Zhu, Li-Huang

2003-04-01

Acta Genetica Sinica (AGS) is sponsored by the Genetics Society of China and the Institute of Genetics and Developmental Biology of Chinese Academy of Sciences, and is published by Science Press. The journal is a leading national academic periodical and one of the Chinese key periodicals of natural sciences. Currently, AGS is being indexed by several well-known domestic and international indexing systems, such as the American Chemical Digest (CA), BIOSIS database, Biological Digest (BA), Medical Index and Russian Digest (P [symbol: see text]). Papers in the areas of genetics, developmental biology, cell molecular biology and evolution are regularly published by AGS.

Educating the Consumer about Advertising: Some Issues. ERIC Digest.

ERIC Educational Resources Information Center

Gottlieb, Stephen S.

Providing a basic overview of issues related to advertising and the consumer, this digest discusses the omnipresence of advertisements, suggesting ways for consumers to recognize advertising appeals. Deceptive advertising is discussed, with particular attention paid to financial advertising. (RS)

The Science of Pizza: The Molecular Origins of Cheese, Bread, and Digestion Using Interactive Activities for the General Public

ERIC Educational Resources Information Center

Rowat, Amy C.; Rosenberg, Daniel; Hollar, Kathryn A.; Stone, Howard A.

2010-01-01

We describe a presentation on the science of pizza, which is designed for the general public including children ages 6 and older. The presentation focuses on the science of making and digesting cheese and bread. We highlight 4 major scientific themes: (1) how macromolecules such as carbohydrates and proteins are composed of atoms and small…

Diversity Digest. Volume 9, Number 2

ERIC Educational Resources Information Center

Musil, Caryn McTighe, Ed.; Hovland, Kevin, Ed.

2005-01-01

Published by the Association of American Colleges and Universities, this issue of "Diversity Digest" focuses on institutional leadership and how it advances diversity in higher education. Articles presented in this issue include: (1) Intercultural Learning for Inclusive Excellence (Edgar Beckham); (2) Demanding, Attracting, and Developing…

75 FR 9911 - National Institute of Diabetes and Digestive and Kidney Diseases; Notice of Closed Meetings

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-04

... Diabetes and Digestive and Kidney Diseases; Notice of Closed Meetings Pursuant to section 10(d) of the... Diabetes and Digestive and Kidney Diseases Special Emphasis Panel, Seeding Team Science in Diabetes... cycle. Name of Committee: National Institute of Diabetes and Digestive and Kidney Diseases Special...

Cognitive Science and Assessment. ERIC Digest.

ERIC Educational Resources Information Center

Boston, Carol

This Digest provides educators with an overview of some important facets of cognitive science research and suggests implications for classroom assessment. Education researchers study the thinking of experts in various subject areas to understand the concepts and procedures that are the most important to teach and to help determine how to move…

Soviet Naval Mission Assignments. Part 1. Soviet SSBN Roles in Strategic Strike

DTIC Science & Technology

1979-04-01

T^ 17. Captain First Rank Makeyev , Naval Science Candidate, Naval Digest, February 1977: "The Navy has acquired the cap- ability to deliver...34 (p. 19); 17. Captain First Rank Makeyev , Naval Science Candidate, Naval Digest, February 1977: "The Navy has acquired the cap- ability to

Occurrence and Fate of Trace Contaminants during Aerobic and Anaerobic Sludge Digestion and Dewatering.

PubMed

Guerra, Paula; Kleywegt, Sonya; Payne, Michael; Svoboda, M Lewina; Lee, Hing-Biu; Reiner, Eric; Kolic, Terry; Metcalfe, Chris; Smyth, Shirley Anne

2015-07-01

Digestion of municipal wastewater biosolids is a necessary prerequisite to their beneficial use in land application, in order to protect public health and the receiving environment. In this study, 13 pharmaceuticals and personal care products (PPCPs), 11 musks, and 17 polybrominated diphenyl ethers were analyzed in 84 samples including primary sludge, waste activated sludge, digested biosolids, dewatered biosolids, and dewatering centrate or filtrate collected from five wastewater treatment plants with aerobic or anaerobic digestion. Aerobic digestion processes were sampled during both warm and cold temperatures to analyze seasonal differences. Among the studied compounds, triclosan, triclocarban, galaxolide, and BDE-209 were the substances most frequently detected under different treatment processes at levels up to 30,000 ng/g dry weight. Comparing aerobic and anaerobic digestion, it was observed that the levels of certain PPCPs and musks were significantly higher in anaerobically digested biosolids, relative to the residues from aerobic digestion. Therefore, aerobic digestion has the potential advantage of reducing levels of PPCPs and musks. On the other hand, anaerobic digestion has the advantage of recovering energy from the biosolids in the form of combustible gases while retaining the nutrient and soil conditioning value of this resource. Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.

University of Wisconsin Oshkosh Anaerobic Dry Digestion Facility

DOE Office of Scientific and Technical Information (OSTI.GOV)

Koker, John; Lizotte, Michael

The University of Wisconsin Oshkosh Anaerobic Dry Digestion Facility is a demonstration project that supported the first commercial-scale use in the United States of high solids, static pile technology for anaerobic digestion of organic waste to generate biogas for use in generating electricity and heat. The research adds to the understanding of startup, operation and supply chain issues for anaerobic digester technology. Issues and performance were documented for equipment installation and modifications, feedstock availability and quality, weekly loading and unloading of digestion chambers, chemical composition of biogas produced, and energy production. This facility also demonstrated an urban industrial ecology approachmore » to siting such facilities near sewage treatment plants (to capture and use excess biogas generated by the plants) and organic yard waste collection sites (a source of feedstock).« less

Learning about the Human Genome. Part 1: Challenge to Science Educators. ERIC Digest.

ERIC Educational Resources Information Center

Haury, David L.

This digest explains how to inform high school students and their parents about the human genome project (HGP) and how the information from this milestone finding will affect future biological and medical research and challenge science educators. The sections include: (1) "The Emerging Legacy of the HGP"; (2) "Transforming How…

Administrative Issues in Planning a Library End User Searching Program. ERIC Digest.

ERIC Educational Resources Information Center

Machovec, George S.

This digest presents a reprint of an article which examines management principles that should be considered when implementing library end user searching programs. A brief discussion of specific implementation issues includes needs assessment, hardware, software, training, budgeting, what systems to offer, publicity and marketing, policies and…

Assessing Faculty Publication Productivity: Issues of Equity. ERIC Digest.

ERIC Educational Resources Information Center

Creamer, Elizabeth G.

This digest summarizes a report of a study of the research literature on faculty publication productivity, with special emphasis on gender as a factor in publishing productivity. Major issues addressed by the report include: (1) the existence of significant gender and race differences in publishing productivity, with women and minorities…

Interfacial & colloidal aspects of lipid digestion.

PubMed

Wilde, P J; Chu, B S

2011-06-09

Amongst the main issues challenging the food manufacturing sector, health and nutrition are becoming increasingly important. Global concerns such as obesity, the ageing population and food security will have to be addressed. Food security is not just about assuring food supply, but is also about optimising nutritional delivery from the food that is available [1]. Therefore one challenge is to optimise the health benefits from the lipids and lipid soluble nutrients. Colloid scientists have an affinity for lipids because they are water insoluble, however this presents a challenge to the digestive system, which has to convert them to structures that are less insoluble so they are available for uptake. Despite this, the human digestive system is remarkably effective at digesting and absorbing most lipids. This is primarily driven through maximising energy intake, as lipids possess the highest calorific value, which was a survival trait to survive times of famine, but is now an underlying cause of obesity in developed countries with high food availability. The critical region here is the lipid-water interface, where the key reactions take place to solubilise lipids and lipid soluble nutrients. Digestive lipases have to adsorb to the oil water interface in order to hydrolyse triacylglycerols into fatty acids and mono glycerides, which accumulate at the interface [2], and inhibit lipase activity. Pancreatic lipase, which is responsible for the majority of lipid hydrolysis, also requires the action of bile salts and colipase to function effectively. Bile salts both aid the adsorption of co-lipase and lipase, and help solubilise the lipolysis products which have accumulated at the interface, into mixed micelles composing bile salts and a range of other lipids, to facilitate transport to the gut mucosal surface prior to uptake and absorption. The process can be affected by the lipid type, as shorter chain, fatty acids are more easily absorbed, whereas the uptake of longer chain fatty acids, particularly the very long chain n-3 fatty acids from fish oils are dependent on source and so may depend on food microstructure for optimal uptake [3]. The uptake of some poorly water soluble nutrients are enhanced by the presence of lipids, but the mechanisms are not clear. In addition, controlling the digestion of lipids can be beneficial as slower release of lipids into the bloodstream can reduce risk of cardiovascular disease, and can promote gut feedback processes that reduce appetite. This presents an opportunity to colloid and interfacial science, as there are many unanswered questions regarding the specific physicochemical mechanisms underlying the process of lipid digestion and uptake. I will review our current knowledge of lipid digestion and present examples of how fundamental research in colloidal and interface science is beginning to address these issues. These include the adsorption behaviour of physiological surfactants such as bile salts; interfacial processes by which different polar lipids can influence lipolysis; and the effect of emulsion based delivery systems on cellular uptake of lipid soluble nutrients. A fundamental understanding of these processes is required if we are to develop intelligent design strategies for foods that will deliver optimal nutrition and improved health benefits in order to address the global challenges facing the food sector in the future. Copyright © 2011 Elsevier B.V. All rights reserved.

Teaching about Africa. ERIC Digest No. 36.

ERIC Educational Resources Information Center

Merryfield, Merry M.

Recognizing the need to strengthen education about Africa in United States schools and to enable teachers to present complex issues about apartheid, political stability, and cultural conflict, this digest addresses the issue of how teachers can improve their teaching about Africa. The article poses 3 questions: (1) Why is it important to teach…

Faculty Workload Studies: Perspectives, Needs, and Future Directions. ERIC Digest.

ERIC Educational Resources Information Center

Meyer, Katrina A.

This digest reviews the literature and discusses issues concerning college faculty workload. Trends in the United States which have created interest in faculty workload issues are identified including faltering state economies in the late 1980s and rising costs of higher education especially of personnel. Criticism of higher education by the…

Freedom Isn’t Free: A Study of Compulsory Military Service in the United States Army

DTIC Science & Technology

2006-01-01

May 2004): 130, 1p. EBSCOhost , 13006472. Evolution of U.S. military manpower procurement. 1971. Congressional Digest, Vol. 50, Issue 5 (May 71): 131...151-157, 4p . Korb, Lawrence J. 2004. Should Congress approve legislation reinstating the military draft? Pro. Congressional Digest, Vol. 83, Issue 5

Supervision of Marriage and Family Counselors. ERIC Digest.

ERIC Educational Resources Information Center

Cryder, Annette Petro; And Others

This digest focuses on issues of importance to the supervision of marriage and family counselors. A brief overview notes that the defining hallmark of marriage and family supervision has been a systemic orientation. Other distinguishing features include a reliance on live forms of supervision, and the viewing of ethical issues within larger…

State Of The Science On Cogeneration Of Heat And Power From Anaerobic Digestion Of Municipal Biosolids

EPA Science Inventory

This presentation will report on work underway to inventory facilities currently utilizing biogas from anaerobic digestion and speak with practitioners to learn: techniques for preparing residuals for digestion, methods to use for cleaning biogas (e.g., of siloxane), and how gas...

The Campus Green: Fund Raising in Higher Education. ERIC Digest.

ERIC Educational Resources Information Center

Brittingham, Barbara E.; Pezzullo, Thomas R.

This digest summarizes issues raised in a research report on fund raising in higher education. The following questions are addressed: What are the changes and trends since the early days of educational fund raising? What are the implications? What is known about spending? What is known about donor behavior? What are the major ethical issues? What…

Teaching Foreign Policy in the Post-Cold War Era. ERIC Digest.

ERIC Educational Resources Information Center

Graseck, Susan

This ERIC Digest discusses issues relating to teaching about U.S. foreign policy in the changing international environment following the end of the Cold War era and the disintegration of the Soviet Union. The document treats: (1) the need and rationale for teaching and learning about current foreign policy issues; (2) main themes in foreign policy…

CoRes utilization for building PCK in pre-service teacher education on the digestive system topic

NASA Astrophysics Data System (ADS)

Nugraha, Ikmanda

2017-05-01

Knowledge of teachers in learning activities in the classroom has a close relationship with how well and how much students learn. Recently, a promising development in teacher education has appeared that centers on the academic construct of pedagogical content knowledge (PCK). This study was an exploratory study into a science teacher education program that seeks to build the foundations on which pre-service teachers can begin to build their pedagogical content knowledge (PCK). The program involved the use of Content Representations (CoRes), which was initially applied as component of a strategy for exploring and gaining insights into the PCK of in-service science teachers. This study involved the researcher and 20 students (third year) in a pre-service teacher education course (School Science I) in science education when the students worked to make content analysis on the digestive system topic. During the course, the students make their own CoRes through a workshop for digestive system topic individually, in pairs and whole class discussion. Data were recorded from students' CoRes, student reflective journals, interviews, and field notes recorded in the researcher's reflective journal. Pre-service teachers' comments from interviews and reflective journals were coded in relation to references about: (1) the effectiveness of variety strategies in building the knowledge bases required to design a CoRes and (2) their awareness and/or development of tentative components of future PCK for a digestive system topic as a result of CoRes construction. Observational data were examined for indications of increasing independence and competency on the part of student teachers when locating appropriate information for designing their CoRes. From this study, it is hoped that the pre-service science teachers are able to build knowledge and then transform it into a form of PCK for digestive system topic for their first classroom planning and teaching to teach digestive system contents effectively.

Results of an international phosphorus digestibility ring test with broiler chickens.

PubMed

Rodehutscord, M; Adeola, O; Angel, R; Bikker, P; Delezie, E; Dozier, W A; Umar Faruk, M; Francesch, M; Kwakernaak, C; Narcy, A; Nyachoti, C M; Olukosi, O A; Preynat, A; Renouf, B; Saiz Del Barrio, A; Schedle, K; Siegert, W; Steenfeldt, S; van Krimpen, M M; Waititu, S M; Witzig, M

2017-06-01

The objective of this ring test was to investigate the prececal phosphorus (P) digestibility of soybean meal (SBM) in broiler chickens using the trial protocol proposed by the World's Poultry Science Association. It was hypothesized that prececal P digestibility of SBM determined in the collaborating stations is similar. Three diets with different inclusion levels of SBM were mixed in a feed mill specialized in experimental diets and transported to 17 collaborating stations. Broiler chicks were raised on commercial starter diets according to station-specific management routine. Then they were fed the experimental diets for a minimum of 5 d before content of the posterior half of the ileum was collected. A minimum of 6 experimental replicates per diet was used in each station. All diets and digesta samples were analyzed in the same laboratory. Diet, station, and their interaction significantly affected (P < 0.05) the prececal digestibility values of P and calcium of the diets. The prececal P digestibility of SBM was determined by linear regression and varied among stations from 19 to 51%, with significant differences among stations. In a subset of 4 stations, the prececal disappearance of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate)-P; InsP6-P) also was studied. The prececal InsP6-P disappearance correlated well with the prececal P digestibility. We hypothesized that factors influencing InsP6 hydrolysis were main contributors to the variation in prececal P digestibility among stations. These factors were probably related to the feeding and housing conditions (floor pens or cages) of the birds in the pre-experimental phase. Therefore, we suggest that the World's Poultry Science Association protocol for the determination of digestible P be should extended to the standardization of the pre-experimental period. We also suggest that comparisons of P digestibility measurements among studies are made only with great caution until the protocol is more refined. © 2016 Poultry Science Association Inc.

Nutritional Translation Blended With Food Science: 21st Century Applications1234

PubMed Central

Ferruzzi, Mario G.; Peterson, Devin G.; Singh, R. Paul; Schwartz, Steven J.; Freedman, Marjorie R.

2012-01-01

This paper, based on the symposium “Real-World Nutritional Translation Blended With Food Science,” describes how an integrated “farm-to-cell” approach would create the framework necessary to address pressing public health issues. The paper describes current research that examines chemical reactions that may influence food flavor (and ultimately food consumption) and posits how these reactions can be used in health promotion; it explains how mechanical engineering and computer modeling can study digestive processes and provide better understanding of how physical properties of food influence nutrient bioavailability and posits how this research can also be used in the fight against obesity and diabetes; and it illustrates how an interdisciplinary scientific collaboration led to the development of a novel functional food that may be used clinically in the prevention and treatment of prostate cancer. PMID:23153735

75 FR 57971 - National Institute of Diabetes and Digestive and Kidney Diseases; Notice of Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-23

... Diabetes and Digestive and Kidney Diseases; Notice of Closed Meeting Pursuant to section 10(d) of the... Diabetes and Digestive and Kidney Diseases Special Emphasis Panel, Central Repositories Non-Renewable Sample Access (PAR-10-90)--Liver, Kidney, Urological Sciences. Date: October 12, 2010. Time: 2 p.m. to 4...

The Academic Administrator and the Law: What Every Dean and Department Chair Needs To Know. ERIC Digest.

ERIC Educational Resources Information Center

Toma, J. Douglas; Palm, Richard L.

This digest summarizes the role of the dean or department chair in dealing with legal issues in higher education. It considers the types of legal issues which might arise for these administrators (such as contract and tort matters for staff and students), the erosion of the legislative and judicial deference given to academic decision making, and…

Issues in the Education of American Indian and Alaska Native Students with Disabilities. ERIC Digest.

ERIC Educational Resources Information Center

Faircloth, Susan; Tippeconnic, John W., III

Over 10 percent of American Indian and Alaska Native (AI/AN) students in public schools and more than 18 percent of AI/AN students in Bureau of Indian Affairs and tribal schools are eligible for or placed in special education programs. This digest addresses four selected issues in the education of AI/AN students with disabilities. First, the 1997…

Evaluation of a functional medicine approach to treating fatigue, stress, and digestive issues in women.

PubMed

Cutshall, Susanne M; Bergstrom, Larry R; Kalish, Daniel J

2016-05-01

Fatigue, stress, and digestive disorders are common among adults, especially women. We conducted a 28-week pilot study to assess the efficacy of a functional medicine approach to improving stress, energy, fatigue, digestive issues, and quality of life in middle-aged women. Findings showed significant improvements in many stress, fatigue, and quality-of-life measures. The treatment program increased mean salivary dehydroepiandrosterone levels and the cortisol-dehydroepiandrosterone ratio. Stool sample analyses suggested that these treatments reduced Helicobacter pylori infections. This study suggests that functional medicine may be an effective approach to managing stress and gastrointestinal symptoms. Copyright © 2016 Elsevier Ltd. All rights reserved.

Digest of Education Statistics 2016, 52nd Edition. NCES 2017-094

ERIC Educational Resources Information Center

Snyder, Thomas D.; de Brey, Cristobal; Dillow, Sally A.

2018-01-01

The 2016 edition of the "Digest of Education Statistics" is the 52nd in a series of publications initiated in 1962. The "Digest" has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field…

Digest of Education Statistics, 2010. NCES 2011-015

ERIC Educational Resources Information Center

Snyder, Thomas D.; Dillow, Sally A.

2011-01-01

The 2010 edition of the "Digest of Education Statistics" is the 46th in a series of publications initiated in 1962. The "Digest" has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field…

Digest of Education Statistics, 2009. NCES 2010-013

ERIC Educational Resources Information Center

Snyder, Thomas D.; Dillow, Sally A.

2010-01-01

The 2009 edition of the "Digest of Education Statistics" is the 45th in a series of publications initiated in 1962. The "Digest" has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field…

Digest of Education Statistics 2015, 51st Edition. NCES 2016-014

ERIC Educational Resources Information Center

Snyder, Thomas D.; de Brey, Cristobal; Dillow, Sally A.

2016-01-01

The 2015 edition of the "Digest of Education Statistics" is the 51st in a series of publications initiated in 1962. The "Digest" has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field…

Digest of Education Statistics 2013. NCES 2015-011

ERIC Educational Resources Information Center

Snyder, Thomas D.; Dillow, Sally A.

2015-01-01

The 2013 edition of the "Digest of Education Statistics" is the 49th in a series of publications initiated in 1962. The Digest has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field of American…

The digestive system: part 1.

PubMed

Johnstone, Carolyn; Hendry, Charles; Farley, Alistair; McLafferty, Ella

This article, which forms part of the life sciences series and is the first of two articles on the digestive system, explores the structure and function of the digestive system. It is important that nurses understand how the digestive system works and its role in maintaining health. The article describes the gross structure of the gastrointestinal tract along with relevant physiology. It also outlines several disorders of the gastrointestinal tract and their treatment and nursing management. The second article will explain the liver, pancreas and gall bladder and their digestive functions, and provides a brief overview of the disorders of chronic liver disease, pancreatitis and gallstones.

Digest of Education Statistics 2014, 50th Edition. NCES 2016-006

ERIC Educational Resources Information Center

Snyder, Thomas D.; de Brey, Cristobal; Dillow, Sally A.

2016-01-01

The 2014 edition of the "Digest of Education Statistics" is the 50th in a series of publications initiated in 1962. The Digest has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field of American…

Rocky Mountain Riparian Digest

Treesearch

Deborah M. Finch

2008-01-01

The Rocky Mountain Riparian Digest presents the many facets of riparian research at the station. Included are articles about protecting the riparian habitat, the social and economic values of riparian environments, watershed restoration, remote sensing tools, and getting kids interested in the science.

Readership survey. A big welcome for Diagnostics in Africa.

PubMed

Chinnock, P

1994-09-01

Targeted to physicians, Africa Health is circulated free to 5600 readers in 23 African countries. Diagnostics in Africa (DIA) is a young publication included as a supplement of Africa Health aimed at laboratory personnel. Readers of DIA were surveyed in the first two issues to find out what they thought of the supplement, how it could be improved, and which problems they currently faced in their work. 98 questionnaires were returned from twelve African countries. 46% of respondents were qualified in laboratory science and 41% were physicians; the others were unqualified laboratory staff and other medical personnel. 73% responded that DIA was very useful and 27% useful, with 80% finding the articles of appropriate depth and complexity. Respondents would like to read about clinical chemistry, histopathology/histology, immunology, management issues, serology, and education/professional development, and would particularly enjoy material in the form of readers' letters and quizzes. Readers responded variously that they were regularly exposed to either Medicine Digest, Dialogue on Diarrhea, Postgraduate Doctor, Labmedica, Lancet, International Diabetes Digest, New England Journal of Medicine, British Medical Journal, or ARI News. Problems typically faced in their work include lack of resources, problems related to HIV testing/screening, poor access to literature, problems with professional development, and difficulty understanding the theory and practice of Western blot tests. These findings confirm assessments of the situation in Africa's medical labs which led to the launching of DIA.

Enhanced methane yield by co-digestion of sewage sludge with micro-algae and catering waste leachate.

PubMed

2018-04-04

The co-digestion of different wastes is a promising concept to improve methane generation during anaerobic process. However, the anaerobic co-digestion of catering waste leachate with algal biomass and sewage sludge has not been studied to date. This work investigated the methane generation by the anaerobic co-digestion of different mixtures of catering waste leachate, micro-algal biomass, and sewage sludge. Co-digestion of waste mixture containing equal ratios of three substrates had 39.31% higher methane yield than anaerobic digestion of raw sludge. This was possibly due to a proliferation of methanogens during the co-digestion period induced by multi-phase digestion of different wastes with different degrees of digestibility. Therefore, co-digestion of catering waste leachate, micro-algal biomass, and sewage sludge appears to be an efficient technology for energy conversion from waste resources. The scientific application of this co-digestion technology with these three substrates may play a role in solving important environmental issues of waste management.

Biomedical Science, Unit II: Nutrition in Health and Medicine. Digestion of Foods; Organic Chemistry of Nutrients; Energy and Cell Respiration; The Optimal Diet; Foodborne Diseases; Food Technology; Dental Science and Nutrition. Instructor's Manual. Revised Version. 1975.

ERIC Educational Resources Information Center

Biomedical Interdisciplinary Curriculum Project, Berkeley, CA.

This collection of lessons deals with nutrition in health and medicine and specifically the digestive system and its functions. The primary objective of this collection of lessons is to provide information on what constitutes good nutrition. Among the problems treated in these lessons are heart disease, peptic ulcer, hepatitis, vitamin deficiency…

A Formative Evaluation of Me Now, Unit I, Digestion and Circulation, Life Sciences for the Educable Mentally Handicapped Intermediate Grades (11-13 years).

ERIC Educational Resources Information Center

Robinson, James T.; Tolman, Richard R.

In order to evaluate Unit I (Digestion and Circulation) of the Me Now series of Life Sciences for the Educable Mentally Handicapped, 139 students in an experimental group (mean IQ 72.04; mean CA 144.9 months) and 154 control subjects (mean IQ 70.2; mean CA 148.3 months) were pre- and post-tested following instruction in the Me Now series…

Eating Disorders: Counseling Issues. In Brief: An Information Digest from ERIC/CAPS.

ERIC Educational Resources Information Center

Herbert, Deborah, Comp.

This digest describes the characteristics and extent of anorexia and bulimia, and provides psychosocial and family profiles of the victims. The role of counseling programs in treating these disorders is discussed. (BH)

Multipurpose fare media : developments and issues

DOT National Transportation Integrated Search

1997-06-01

This TCRP digest presents the interim findings of TCRP Project A-14, Potential of Multipurpose Fare Media," conducted by Multisystems, Inc., in collaboration with Dove Associates. Inc., and Mundle & Associates, Inc.Included in the digest are (1) a...

Fate of Trace Metals in Anaerobic Digestion.

PubMed

Fermoso, F G; van Hullebusch, E D; Guibaud, G; Collins, G; Svensson, B H; Carliell-Marquet, C; Vink, J P M; Esposito, G; Frunzo, L

2015-01-01

A challenging, and largely uncharted, area of research in the field of anaerobic digestion science and technology is in understanding the roles of trace metals in enabling biogas production. This is a major knowledge gap and a multifaceted problem involving metal chemistry; physical interactions of metal and solids; microbiology; and technology optimization. Moreover, the fate of trace metals, and the chemical speciation and transport of trace metals in environments--often agricultural lands receiving discharge waters from anaerobic digestion processes--simultaneously represents challenges for environmental protection and opportunities to close process loops in anaerobic digestion.

The microstructure of starchy food modulates its digestibility.

PubMed

Tian, Jinhu; Ogawa, Yukiharu; Shi, John; Chen, Shiguo; Zhang, Huiling; Liu, Donghong; Ye, Xingqian

2018-06-05

Starch is the main carbohydrate in human nutrition and shows a range of desired food properties. It has been demonstrated that fast digestion of starchy food can induce many health issues (e.g., hyperglycaemia, diabetes, etc.); therefore, how to modulate its digestion is an interesting topic. Previous studies have revealed that the microstructure and digestibility of starchy food of different botanical origin or from multiple processes are quite different; modulating starch digestion by retaining or altering its microstructure may be effective. In the present review, the current knowledge of the relationship between microstructural changes to starchy food and its digestibility at molecular, cell and tissue, and food processing levels is summarized. New technologies focused on microstructure studies and ways to manipulate food microstructure to modulate starch digestibility are also reviewed. In particular, some insights focusing on the future study of microstructure and the digestibility of starchy food are also suggested.

Digested disorder: Quarterly intrinsic disorder digest (April-May-June, 2013).

PubMed

DeForte, Shelly; Reddy, Krishna D; Uversky, Vladimir N

2013-01-01

The current literature on intrinsically disordered proteins is overwhelming. To keep interested readers up to speed with this literature, we continue a "Digested Disorder" project and represent a series of reader's digest type articles objectively representing the research papers and reviews on intrinsically disordered proteins. The only 2 criteria for inclusion in this digest are the publication date (a paper should be published within the covered time frame) and topic (a paper should be dedicated to any aspect of protein intrinsic disorder). The current digest issue covers papers published during the period of April, May, and June of 2013. The papers are grouped hierarchically by topics they cover, and for each of the included paper a short description is given on its major findings.

Child Labour and Education: Issues Emerging from the Experiences of Some Developing Countries of Asia. UNESCO-UNICEF Co-operative Programme Digest No. 28.

ERIC Educational Resources Information Center

United Nations Children's Fund, Paris (France).

This digest examines the problem of child labor and education in India and other Southeast Asian countries. It offers novel insights into the extent of child labor and the shortcomings and inertia of educational systems in adapting to the needs of working children. Also, the digest describes a series of promising educational innovations meant to…

Digest of Education Statistics, 2011. NCES 2012-001 [Appendix A: Guide to Sources; Appendix B: Definitions; Appendix C: Index of Table Numbers

ERIC Educational Resources Information Center

Snyder, Thomas D.; Dillow, Sally A.

2012-01-01

The 2011 edition of the "Digest of Education Statistics" is the 47th in a series of publications initiated in 1962. The "Digest" has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field…

Digest of Education Statistics, 2012. NCES 2014-015 [Appendix A: Guide to Sources; Appendix B: Definitions; Appendix C: Index of Table Numbers

ERIC Educational Resources Information Center

Snyder, Thomas D.; Dillow, Sally A.

2013-01-01

The 2012 edition of the "Digest of Education Statistics" is the 48th in a series of publications initiated in 1962. The "Digest" has been issued annually except for combined editions for the years 1977-78, 1983-84, and 1985-86. Its primary purpose is to provide a compilation of statistical information covering the broad field…

Outdoor Education and Environmental Responsibility. ERIC Digest.

ERIC Educational Resources Information Center

Yerkes, Rita; Haras, Kathy

Outdoor education programs provide opportunities for students to become environmentally conscious citizens. However, awareness of environmental issues is not enough to preserve our world of limited natural resources. Students must also recognize their environmental responsibilities and change their behaviors accordingly. This digest reviews the…

Technology Options for Libraries. ERIC Digest.

ERIC Educational Resources Information Center

Schamber, Linda

This two-page digest briefly outlines some of the technological trends in updating a library, and briefly discusses the administrative issues and strategies involved. It begins by describing the wholly integrated information environment, which would include: (1) public-access personal and professional communications networks; (2) information…

Political Communication via the Media. ERIC Digest.

ERIC Educational Resources Information Center

Aiex, Nola Kortner; Gottlieb, Stephen S.

Noting that critics charge that news reporting focuses on the superficial, personal characteristics of candidates and ignores the issues underlying elections, this Digest examines the relationship between the political process and political communication through the media. It addresses the power of advertising, cyberspace political communication,…

Behavioral gastroenterology: An emerging system and new frontier of action.

PubMed

Jia, Lin; Jiang, Shu-Man; Liu, Jing

2017-09-07

Behavioral gastroenterology is a new interdisciplinary science that explores the influence of unhealthy lifestyles and psychological factors on the digestive system and addresses the prevention, diagnosis, treatment, and rehabilitation of digestive diseases. Moreover, the concept of whole-course intervention with a focus on disease prevention and a new model of integrated therapy based on alterations of lifestyle and psychology are being gradually established. This paradigm may substantively impact the prevention and treatment of digestive diseases.

Use of bean husk as an easily digestible fiber source for activating the fibrolytic rumen bacterium Fibrobacter succinogenes and rice straw digestion.

PubMed

Fuma, Ryosuke; Oyaizu, Shinya; Nukui, Yoko; Ngwe, Tin; Shinkai, Takumi; Koike, Satoshi; Kobayashi, Yasuo

2012-10-01

A series of in sacco and in vitro studies were carried out to evaluate bean husks for activation of fibrolytic rumen bacteria and rice straw digestion. First, lablab bean husk, chickpea husk and rice straw were suspended in the rumen of sheep to analyze the bacterial consortium developed on each fiber source. Known members of fiber-associating bacteria were found on both lablab bean husk and rice straw, but some of these bacteria were lacking on chickpea husk. Second, a pure culture study was carried out using six strains of Fibrobacter succinogenes. Both husks stimulated the growth of all tested strains, including a strain that did not grow on rice straw. The strain OS128 that showed the highest growth on rice straw displayed even higher growth on lablab bean husk without a time lag. Finally, two-step incubations were carried out to determine whether prior incubation of rumen fluid with husks stimulates subsequent rice straw digestion. Higher digestibility of rice straw was recorded in the second-round incubation following the first incubation with bean husks. These results suggest that the tested bean husks improve the digestion of rice straw by activating fibrolytic F. succinogenes and other associated bacteria. © 2012 The Authors. Animal Science Journal © 2012 Japanese Society of Animal Science.

Digestive evaluation of soy isolate protein as affected by heat treatment and soy oil inclusion in broilers at an early age.

PubMed

Zhang, Xianglun; Lu, Peng; Xue, Wenyue; Wu, Dawei; Wen, Chao; Zhou, Yanmin

2016-10-01

Soy protein isolate (SPI) mixed with soybean oil (SPIO) incubated at 100°C for 8 h was used to evaluate changes of solubility and digestibility of SPI in vitro and digestive function in broilers at an early age. Arbor Acres broilers were allocated to three groups with six replicates of 12 birds, receiving basal diet (CON), 8 h heat-oxidized SPI diet (HSPI) and 8 h heat-oxidized mixture of SPI and 2% soybean oil diet (HSPIO) for 21 days, respectively. Nitrogen solubility index (NSI) declined and soybean oil accelerated the decline of NSI during incubation (P < 0.05). Decreased in vitro digestibility of dry matter (DM) and crude protein (CP) were observed in SPIO (P < 0.05). HSPI and HSPIO decreased body weight gain, relative jejunum weight and pancreatic trypsin activity at day 21 (P < 0.05). HSPIO decreased anterior intestinal trypsin activity at day 14 and amylase and trypsin activity at day 21, pancreatic amylase activity at day 21 and apparent digestibility of DM, organic matter and CP of broilers from days 18 to 20 (P < 0.05). Heat treatment and soybean oil could induce oxidative modification of SPI, and oxidized SPI negatively affected growth and digestion of broilers. © 2016 Japanese Society of Animal Science. © 2016 Japanese Society of Animal Science.

Diversity Digest. Volume 9, Number 1

ERIC Educational Resources Information Center

Musil, Caryn McTighe, Ed.; Hovland, Kevin, Ed.

2005-01-01

Civic engagement is the focus of this issue of "Diversity Digest." Concrete examples of institutions that have linked diversity and civic engagement in powerful, effective, and educationally transforming ways are presented. What is seen in the field is encouraging. Articles feature new conceptual frameworks for civic learning, curricular…

Diversity Digest. Volume 8, Number 2

ERIC Educational Resources Information Center

Giles, Mark, Ed.

2004-01-01

This issue of "Diversity Digest" contains articles and resources focused on the lasting lessons, legacies, and spirit of the 1954 "Brown v. Board of Education" decision. This year of the fiftieth anniversary, filled with ceremonies, celebrations, and commemorations of that decision has highlighted many well known and lesser…

Background Checks on School Personnel. ERIC Digest Series EA 55.

ERIC Educational Resources Information Center

Baas, Alan

Although it is relatively simple to check on applicants' basic professional competency, ensuring the moral competency of potential school employees is much more difficult. This digest examines major legal issues, district liabilities and responsibilities, suggested guidelines, and information sources involving employee background checks. Of more…

Improving the Science and Mathematic Achievement of Mexican American Students Through Culturally Relevant Science. ERIC Digest.

ERIC Educational Resources Information Center

Marinez, Diana I.; Ortiz de Montellano, Bernardo R.

There are many ways in which science can be made culturally relevant: archeoastronomy, mathematics, geology, ethnobotany, chemistry, and art can all be taught from a perspective celebrating the accomplishments of Mexican American and American Indian science and encouraging exploration. A culturally relevant curriculum provides teachers with…

Liderazgo etico (Ethical Leadership). ERIC Digest.

ERIC Educational Resources Information Center

Lashway, Larry

Until very recently, ethical issues were given little attention in administrator-preparation programs. This digest in Spanish outlines the ethical responsibilities of school leaders and the dilemmas that they face. It offers the following suggestions for resolving ethical dilemmas: (1) Leaders should have and be willing to act on a definite sense…

Full-Day or Half-Day Kindergarten? ERIC Digest.

ERIC Educational Resources Information Center

Rothenberg, Dianne

This ERIC Digest examines how changing family patterns have affected the full-day/half-day kindergarten issue, discussing why schools are currently considering alternative scheduling and describing the advantages and disadvantages of each type of program. The following changing family patterns affecting the choice of full-day kindergarten programs…

Contract Faculty in Higher Education. ERIC Digest.

ERIC Educational Resources Information Center

Holub, Tamara

This Digest discusses issues related to full-time, nontenure track, contract college faculty, sometimes called contingent faculty. Recent data from several sources show that the opportunities for tenure are declining, while the numbers of nontenure positions are increasing. Part of the increase in full-time nontenure faculty is due to the decrease…

Library and Information Services for Productivity. ERIC Digest.

ERIC Educational Resources Information Center

Schamber, Linda

For the purposes of this digest, productivity is defined as ways in which library and information services can assist agencies, industries, and individuals in producing goods and services effectively and profitably. Two fundamental issues that affect productivity are access and control; two major strategies for improving productivity are…

FARM WASTE TO ENERGY: A SUSTAINABLE SOLUTION FOR SMALL-SCALE FARMS

EPA Science Inventory

Through this project, it was determined that the utilization of anaerobic digestion on small farms for the purpose of managing varying waste streams and odor issues and decreasing fossil fuel consumption and cost was feasible. The feedstocks necessary to run the digester are r...

Diversity Digest. Volume 8, Number 1

ERIC Educational Resources Information Center

Giles, Mark, Ed.

2004-01-01

Sponsored by the Pathways to College Network, this issue of "Diversity Digest" highlights some of the research that informs Pathways. Several of the articles identify factors that affect underserved students' ability to attend and succeed at postsecondary institutions. In the first article, "The Right to Learn and the Pathways to College Network"…

School Productivity. ERIC Digest, Number 119.

ERIC Educational Resources Information Center

Hadderman, Margaret

Some of the issues surrounding school productivity are discussed in this ERIC digest. It presents the results of early research that explored whether there is a relationship between educational funding and student outcomes. Some of the reasons behind schools' productivity problems are presented, including problems with unstable governance and the…

Striving for Excellence: The National Education Goals.

ERIC Educational Resources Information Center

ACCESS ERIC, Rockville, MD.

This compilation of ERIC Digests describes issues, highlights exemplary programs and promising practices, and explains research results that can assist educators in achieving the far-reaching national education goals adopted by the President and the governors in 1990. The two lead digests are "An Overview of the Six National Education…

Of Lasting Interest? A Study of Change in the Content of the "Reader's Digest."

ERIC Educational Resources Information Center

Smith, Ron F.; Decker-Amos, Linda

1985-01-01

Reports on a content analysis of "Reader's Digest" indicating that there is some validity to the notion that it is unchanging. Notes that the percentages of articles in some important categories, specifically those discussing controversial issues, have remained consistent over 40 years. (FL)

Digested disorder

PubMed Central

DeForte, Shelly; Reddy, Krishna D; Uversky, Vladimir N

2013-01-01

The current literature on intrinsically disordered proteins is overwhelming. To keep interested readers up to speed with this literature, we continue a “Digested Disorder” project and represent a series of reader’s digest type articles objectively representing the research papers and reviews on intrinsically disordered proteins. The only 2 criteria for inclusion in this digest are the publication date (a paper should be published within the covered time frame) and topic (a paper should be dedicated to any aspect of protein intrinsic disorder). The current digest issue covers papers published during the period of April, May, and June of 2013. The papers are grouped hierarchically by topics they cover, and for each of the included paper a short description is given on its major findings. PMID:28516028

Introduction to Animal Nutrition. Instructor Guide [and] Student Reference. Volume 28, Number 7 [and] Volume 28, Number 8.

ERIC Educational Resources Information Center

Peiter, Andrea; And Others

This instructor guide and the corresponding student reference contain five lessons about animal science for inclusion in Vocational Instructional Management System (VIMS) agricultural education courses. The lessons cover these topics: the monogastric digestive system, the ruminant digestive system, the importance of meeting nutritional needs, how…

Resources for Educational Materials Related to Environmental Education, K-12. ERIC/SMEAC Environmental Education Digest No. 4.

ERIC Educational Resources Information Center

Howe, Robert W.; Disinger, John F.

This digest identifies selected sources of materials for environmental education. Included are: the Educational Resources Information Center; the United States Environmental Protection Agency; the Public Broadcasting System; the National Wildlife Federation; and the National Science Teachers Association. References and reviews of print,…

Contribution to the Study of Ammonia Removal from Digestate by Struvite Precipitation

NASA Astrophysics Data System (ADS)

Vidlarova, P.; Heviankova, S.; Kyncl, M.

2017-10-01

This study deals with an issue of ammonia removal from anaerobic digestion’s by-product - digestate. The aim of the research is ammonia removal by chemical precipitation using the combination of Mg2+, NH4+ and PO43-ions in struvite (MgNH4PO4 . 6 H2O). Laboratory tests were carried out using the sample of digestate liquor. The final product of the treatment may have the potential to be used as a fertilizer.

77 FR 28889 - Center for Scientific Review; Notice of Closed Meetings

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-16

... Panel; RFA Panel: System Science and Health in the Behavioral and Social Sciences. Date: June 6-7, 2012... Special Emphasis Panel; Pilot and Feasibility Clinical Research Studies in Digestive Diseases and...

Hepatitis C and Dietary Supplements: What the Science Says

MedlinePlus

... Health NCCIH Clinical Digest for health professionals Hepatitis C and Dietary Supplements: What the Science Says Share: ... Clinical Guidelines, Scientific Literature, Info for Patients: Hepatitis C and Dietary Supplements Dietary Supplements Milk Thistle Milk ...

Teaching K-6 Science in Small Schools on a Financial Shoestring. ERIC Digest.

ERIC Educational Resources Information Center

Votaw, Thom A.

There are ways in which elementary teachers in general and rural elementary teachers in particular can overcome inadequate science preparation and can upgrade the science program resources of their small schools. Parents and children should be involved in obtaining free and inexpensive science-related materials throughout the year. These can be…

The Digestive System and Alcohol Use. Science of Alcohol Curriculum for American Indians. Training Unit [and] Participant Booklet.

ERIC Educational Resources Information Center

Jacobs, Cecelia; And Others

The Science of Alcohol Curriculum for American Indians uses the Medicine Circle and the "new science paradigm" to study the science of alcohol through a culturally relevant holistic approach. Intended for teachers and other educational personnel involved with American Indians, this curriculum presents a framework for alcohol education…

Key Science and Engineering Indicators: 2010 Digest. NSB 10-02

ERIC Educational Resources Information Center

Roesel, Cheryl, Ed.

2010-01-01

The National Science Board (Board) is required under the National Science Foundation (NSF) Act, 42 U.S.C. (United States Code) Section 1863 (j) (1) to prepare and transmit the biennial "Science and Engineering Indicators" ("SEI") report to the President and to the Congress by January 15 of every even-numbered year. The report…

Foaming phenomenon in bench-scale anaerobic digesters.

PubMed

Siebels, Amanda M; Long, Sharon C

2013-04-01

The Madison Metropolitan Sewerage District (The District) in Madison, Wisconsin has been experiencing seasonal foaming in their anaerobic biosolids digesters, which has occurred from mid-November to late June for the past few years. The exact cause(s) of foaming is unknown. Previous research findings are unclear as to whether applications of advanced anaerobic digestion processes reduce the foaming potential of digesters. The object of this study was to investigate how configurations of thermophilic and acid phase-thermophilic anaerobic digestion would affect foaming at the bench-scale level compared to single stage mesophilic digestion for The District. Bench-scale anaerobic digesters were fed with a 4 to 4.5% by dry weight of solids content blend of waste activated sludge (WAS) and primary sludge from The District. Foaming potential was monitored using Alka-Seltzer and aeration foaming tests. The bench-scale acid phase-thermophilic digester had a higher foaming potential than the bench-scale mesophilic digester. These results indicate that higher temperatures increase the foaming potential of the bench-scale anaerobic digesters. The bench-scale acid phase-thermophilic digesters had a greater percent (approximately 5 to 10%) volatile solids destruction and a greater percent (approximately 5 to 10%) total solids destruction when compared to the bench-scale mesophilic digester. Overall, for the full-scale foaming experienced by The District, it appears that adding an acid phase or switching to thermophilic digestion would not alleviate The District's foaming issues.

USSR Space Life Sciences Digest, volume 2, no.1

NASA Technical Reports Server (NTRS)

Paulson, L. D.

1981-01-01

An overview of the developments and direction of the USSR Space Life Sciences Program is given. Highlights of launches, program development, and mission planning are given. Results of ground-based research and space flight studies are summarized. Topics covered include: space medicine and physiology; space biology; and life sciences technology.

USSR Space Life Sciences Digest, volume 1, no. 3

NASA Technical Reports Server (NTRS)

Wallace, P. M.

1980-01-01

An overview of the developments and direction of the USSR Space Life Sciences Program is given. Highlights of launches, program development, and mission planning are given. Results of ground-based research and space flight studies are summarized. Topics covered include: space medicine and physiology; space biology; and life sciences technology.

History Textbook Controversies in Japan. ERIC Digest.

ERIC Educational Resources Information Center

Masalski, Kathleen Woods

Currently, there is a controversy in Japan about textbook treatments of Japanese military actions during World War II. This digest examines: (1) the importance of history textbooks in schools in Japan and the United States; (2) the context of history textbook controversies in Japan; (3) the current issues and contending positions in the Japanese…

The Curriculum Roles and Responsibilities of Library Media Specialists. ERIC Digest.

ERIC Educational Resources Information Center

Berkowitz, Robert E.; Eisenberg, Michael B.

This digest brings together the various views on curriculum-related roles for library media specialists. The first section considers reasons why a disparity between theory and practice exists in regard to the involvement of library media specialists as curriculum consultants. Several sources addressing this issue are reviewed in the second…

The National Research and Education Network (NREN): Promise of New Information Environments. ERIC Digest.

ERIC Educational Resources Information Center

Bishop, Ann P.

This digest describes proposed legislation for the implementation of the National Research and Education Network (NREN). Issues and implications for teachers, students, researchers, and librarians are suggested and the emergence of the electronic network as a general communication and research tool is described. Developments in electronic…

National Standards for Athletic Coaches. ERIC Digest.

ERIC Educational Resources Information Center

Brylinsky, Jody

This digest asserts that the question of coach preparation and training has become a priority issue for many schools and communities, though the research is limited. It examines reasons to have coach education; the scope of sport participation; the status of coach education and training in the United States; National standards for coach education;…

Higher Education Leadership: Analyzing the Gender Gap. ERIC Digest.

ERIC Educational Resources Information Center

Chliwniak, Luba

Although more than 52 percent of the current college and university student body is comprised of women, institutional leadership is still dominated by males. This digest summarizes the issue from an institutional context and identifies factors that contribute to the gap. It suggests that the organizational and societal concepts of leadership be…

Alignment of Standards and Assessments as an Accountability Criterion. ERIC Digest.

ERIC Educational Resources Information Center

La Marca, Paul M.

This digest provides an overview of the concept of alignment and the role it plays in assessment and accountability systems. It also discusses methodological issues affecting the study of alignment and explores the relationship between alignment and test score interpretation. Alignment refers to the degree of match between test content and subject…

School Psychologists: Leaders for Change Building a Secure Future for Children. CASS Digest.

ERIC Educational Resources Information Center

Kelly, Carol

This digest examines the role of school psychologists in improving educational opportunities for children and adolescents. A variety of issues that affect children and their ability to learn are discussed: widening social class differences and increases in the number of children living in poverty; changing value systems; family disintegration;…

Angiotensin I-converting enzyme-inhibitory activity of the Norwegian autochthonous cheeses Gamalost and Norvegia after in vitro human gastrointestinal digestion.

PubMed

Qureshi, T M; Vegarud, G E; Abrahamsen, R K; Skeie, S

2013-02-01

The angiotensin I-converting enzyme (ACE) inhibitory activity of Gamalost cheese, its pH 4.6-soluble fraction, and Norvegia cheese was monitored before and after digestion with human gastric and duodenal juices. Both Gamalost and Norvegia cheeses showed an increased ACE-inhibitory activity during gastrointestinal digestion. However, only Norvegia showed pronounced increased activity after duodenal digestion. More peptides were detected in digested Gamalost compared with digested Norvegia. Most of the peptides in Gamalost were derived from β-casein (CN), some originated from α(s1)-CN, and only a very few originated from α(s2)-CN and κ-CN. In general, the number of peptides increased during gastrointestinal digestion, whereas some peptides were further degraded and disappeared; however, surprisingly, a few peptides remained stable. The aromatic amino acids, such as Tyr, Phe, and Trp; the positively charged amino acids (Arg and Lys); and Leu increased after simulated gastrointestinal digestion of Gamalost and Norvegia. After in vitro gastrointestinal digestion, both Gamalost and Norvegia showed high ACE-inhibitory activity, which may contribute in lowering of mild hypertension. Copyright © 2013 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Digestion, Excretion and Metabolism, Science (Experimental): 5346.03.

ERIC Educational Resources Information Center

Weiss, Alan; And Others

This unit of instruction deals with a study of human physiology with emphasis on the process of digestion. The urinary system and urinary disorders are also discussed. The course is for the interested student and requires credit or background in previous biology programs. It is, in part, a second course in biology, but it is well within the range…

Evaluation of the pepsin digestibility assay for predicting amino acid digestibility of meat and bone meals.

PubMed

Davis, T M; Parsons, C M; Utterback, P L; Kirstein, D

2015-05-01

Sixteen meat and bone meal (MBM) samples were obtained and selected from various company plants to provide a wide range in pepsin nitrogen digestibility values. Pepsin digestibility was determined using either 0.02 or 0.002% pepsin. Amino acid (AA) digestibility of the 16 MBM samples was then determined using a precision-fed cecectomized rooster assay. The 0.02% pepsin digestibility values were numerically higher than the 0.002% pepsin values. The values varied from 77 to 93% for 0.02% pepsin and from 67 to 91% for 0.002% pepsin. The rooster AA digestibility results showed a wide range of values among MBM samples mostly due to the 4 samples having lowest and highest AA digestibility. A precision-fed broiler chick ileal AA digestibility assay confirmed that there were large differences in AA digestibility among the MBM samples having the lowest and highest rooster digestibility values. Correlation analyses between pepsin and AA digestibility values showed that the correlation values (r) were highly significant (P < 0.0001) for all AA when all 16 MBM samples were included in the analysis. However, when the MBM samples with the 2 lowest and the 2 highest rooster digestibility values were not included in the correlation analyses, the correlation coefficient values (r) were generally very low and not significant (P > 0.05). The results indicated that the pepsin nitrogen digestibility assay is only useful for detecting large differences in AA digestibility among MBM. There also was no advantage for using 0.02 versus 0.002% pepsin. © 2015 Poultry Science Association Inc.

The Nigerian Crisis: An Open Reply to Lindsay Barrett

ERIC Educational Resources Information Center

Egwuonwu, L. A.

1970-01-01

An American-based Biafran takes issue with Lindsay Barrett's version of the problems of reconciliation between Nigeria and Biafra, which appeared in an article in the October, 1969 issue of "Negro Digest . (KG)

Nutrient Losses during Winter and Summer Storage of Separated and Unseparated Digested Cattle Slurry.

PubMed

Perazzolo, Francesca; Mattachini, Gabriele; Riva, Elisabetta; Provolo, Giorgio

2017-07-01

Management factors affect nutrient loss during animal manure slurry storage in different ways. We conducted a pilot-scale study to evaluate carbon (C) and nitrogen (N) losses from unseparated and digested dairy slurry during winter and summer storage. In addition to season, treatments included mechanical separation of digestate into liquid and solid fractions and bimonthly mixing. Chemical analyses were performed every 2 wk for the mixed materials and at the start and end of storage for unmixed materials. The parameters examined allowed us to estimate C and N losses and examine the factors that determine these losses as well as emission patterns. Gas measurements were done every 2 wk to determine the main forms in which gaseous losses occurred. To evaluate the effect of separation, measured losses and emissions of separated liquid and solid fractions were mathematically combined using the mass separation efficiency of the mechanical separator. Nutrient losses were mainly affected by climatic conditions. Losses of C (up to 23%) from unseparated, unmixed digestate and of N (38% from combined separated fractions and from unseparated digestate) were much greater in summer than in winter, when C and N losses were <7%. Mixing tended to significantly increase N losses ( < 0.1) only in winter. Mechanical separation resulted in lower GHG emissions from combined separated fractions than from unseparated digestate. Results indicate that to maximize the fertilizer value of digested slurry, dairy farmers must carefully choose management practices, especially in summer. For separated digestates, practices should focus on storage of the liquid fraction, the major contributor of C and N losses (up to 64 and 90% of total losses, respectively) in summer. Moreover, management practices should limit NH, the main form of N losses (up to 99.5%). Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.

The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion.

PubMed

Fagbohungbe, Michael O; Herbert, Ben M J; Hurst, Lois; Ibeto, Cynthia N; Li, Hong; Usmani, Shams Q; Semple, Kirk T

2017-03-01

Biochar, like most other adsorbents, is a carbonaceous material, which is formed from the combustion of plant materials, in low-zero oxygen conditions and results in a material, which has the capacity to sorb chemicals onto its surfaces. Currently, research is being carried out to investigate the relevance of biochar in improving the soil ecosystem, digestate quality and most recently the anaerobic digestion process. Anaerobic digestion (AD) of organic substrates provides both a sustainable source of energy and a digestate with the potential to enhance plant growth and soil health. In order to ensure that these benefits are realised, the anaerobic digestion system must be optimized for process stability and high nutrient retention capacity in the digestate produced. Substrate-induced inhibition is a major issue, which can disrupt the stable functioning of the AD system reducing microbial breakdown of the organic waste and formation of methane, which in turn reduces energy output. Likewise, the spreading of digestate on land can often result in nutrient loss, surface runoff and leaching. This review will examine substrate inhibition and their impact on anaerobic digestion, nutrient leaching and their environmental implications, the properties and functionality of biochar material in counteracting these challenges. Copyright © 2016 Elsevier Ltd. All rights reserved.

Teaching American Indian and Alaska Native Languages in the Schools: What Has Been Learned. ERIC Digest.

ERIC Educational Resources Information Center

Peacock, Thomas D.; Day, Donald R.

This digest considers issues, possible solutions, and successful efforts in dealing with Native language loss, maintenance, and restoration in American Indian and Alaska Native communities and schools. The preservation and maintenance of the remaining 210 tribal languages is a major cultural and education concern in Native communities. The problem…

College Student Records: Legal Issues, Privacy, and Security Concerns. ERIC Digest.

ERIC Educational Resources Information Center

Holub, Tamara

This digest briefly reviews the provisions of the Family Educational Rights and Privacy Act (FERPA) of 1974 (the Buckley Amendment), which sets out legal guidelines regarding the privacy of student records and the provisions of the U.S. Patriot Act, along with the measures some colleges are implementing to comply with these laws and improve the…

Education and Primary Health Care. UNESCO-UNICEF Co-operative Programme Digest No. 17.

ERIC Educational Resources Information Center

Jabre, Bushra

This digest concentrates on UNICEF's program priorities and summarizes the contents of the first 17 issues of its series on education and primary health care (PHC). Chapter I offers an introduction to PHC. Chapter II describes UNICEF's child health revolution, focusing on the direct and immediate interventions of growth monitoring, oral…

Collaborative Peer Review. The Role of Faculty in Improving College Teaching. ERIC Digest.

ERIC Educational Resources Information Center

Keig, Larry; Waggoner, Michael D.

This digest, based on a full report of the same title, provides an examination of the improvement of college teaching and argues for the central involvement of faculty themselves in collaborative peer review and looks at some central issues and challenges to implementation. Since summative evaluation involved in tenure and promotion decisions…

Gaining Control of Violence in the Schools: A View from the Field. ERIC Digest No. 100.

ERIC Educational Resources Information Center

Ascher, Carol

This ERIC digest presents a summary of discussions from urban educators who addressed the issue of school violence at a National Education Association meeting held May 19, 1994. These educators note that American society is steeped in violence, particularly in urban areas, where children experience frustration, helplessness, and anger, and where…

Wastewater Treatment Anaerobic Digester Foaming Prevention and Control Methods - Literature Review and Survey - Full-Scale Studies (WERF Report INFR1SG10)

EPA Science Inventory

This project addresses the issue of anaerobic digester (AD) foaming in different water resource recovery facilities (WRRFs). This two-volume report is a compilation of an AD foaming literature review, a plant survey, and findings from full-scale studies. The literature review hel...

USSR Space Life Sciences Digest, volume 1, no. 4

NASA Technical Reports Server (NTRS)

Paulson, L. D.

1980-01-01

An overview of the developments and direction of the USSR Space Life Sciences Program is given. Highlights of launches, program development, and mission planning are given. Results of ground-based research and space flight studies are summarized. Topics covered include: space medicine and physiology; space biology, and life sciences and technology.

USSR Space Life Sciences Digest, volume 2, no. 2

NASA Technical Reports Server (NTRS)

Paulson, L. D.

1981-01-01

An overview of the developments and direction of the USSR Space Life Sciences Program is given. Highlights of launches, program development, and mission planning are given. Results of ground-based research and space flight studies are summarized. Topics covered include: space medicine and physiology; space biology; and life sciences and technology.

Prior lactose glycation of caseinate via the Maillard reaction affects in vitro activities of the pepsin-trypsin digest toward intestinal epithelial cells.

PubMed

Wang, X P; Zhao, X H

2017-07-01

The well-known Maillard reaction in milk occurs between lactose and milk proteins during thermal treatment, and its effects on milk nutrition and safety have been well studied. A lactose-glycated caseinate was prepared via this reaction and digested using 2 digestive proteases, pepsin and trypsin. The glycated caseinate digest was assessed for its in vitro activities on rat intestinal epithelial cells in terms of growth proliferation, anti-apoptotic effect, and differentiation induction using caseinate digest as reference, to verify potential effects of the Maillard reaction on these activities of caseinate digest to the cells. Two digests had proliferative and anti-apoptotic effects, and reached the highest effects at 0.02 g/L of digest concentration with treatment time of 24 h. In comparison with caseinate digest, glycated caseinate digest always showed weaker proliferative (5.3-14.2%) and anti-apoptotic (5.9-39.0%) effects, and was more toxic to the cells at 0.5 g/L of digest concentration with treatment time of 48 h. However, glycated caseinate digest at 2 incubation times of 4 to 7 d showed differentiation induction higher than caseinate digest, as it could confer the cells with increased activities in lactase (16.3-26.6%), sucrase (22.4-31.2%), and alkaline phosphatase (17.4-24.8%). Transmission electron microscopy observation results also confirmed higher differentiation induction of glycated caseinate digest. Amino acid loss and lactose glycation partially contributed to these decreased and enhanced activities of glycated caseinate digest, respectively. The Maillard reaction of caseinate and lactose is thus shown in this study to have effects on the activities of caseinate digest to intestinal epithelial cells. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Methane production from thermophilic co-digestion of dairy manure and waste milk obtained from therapeutically treated cows.

PubMed

Beneragama, Nilmini; Iwasaki, Masahiro; Umetsu, Kazutaka

2017-02-01

Methane production from co-digestion of dairy manure and waste milk, milk from cows treated with antibiotics for mastitis, was tested in a 2 × 4 factorial design. Four different waste milk percentages (w/w): 0% (SM), 10% (SMWM10), 20% (SMWM20) and 30% (SMWM30), were tested with two slurry percentages (w/w): 50% (A) and 25% (B) and the rest being manure at 55°C for 12 days in batch digesters. The results analyzed using a Gompertz model showed SMWM10 produced the highest methane production potential (P m )/g volatile solids added followed by SM in both A and B. This P m of SMWM10 in A and B was statistically non-significant (P > 0.05). More than 96% of cefazolin-resistant bacteria and 100% of multi-drug-resistant bacteria reductions were observed in all the treatments. Inclusion of waste milk at 10% in single stage digester enhances the methane production from dairy manure and could offer added benefit of waste milk treatment and disposal. © 2016 The Authors. Animal Science Journal published by John Wiley & Sons Australia, Ltd on behalf of Japanese Society of Animal Science.

Fungal fermentation on anaerobic digestate for lipid-based biofuel production.

PubMed

Zhong, Yuan; Liu, Zhiguo; Isaguirre, Christine; Liu, Yan; Liao, Wei

2016-01-01

Anaerobic digestate is the effluent from anaerobic digestion of organic wastes. It contains a significant amount of nutrients and lignocellulosic materials, even though anaerobic digestion consumed a large portion of organic matters in the wastes. Utilizing the nutrients and lignocellulosic materials in the digestate is critical to significantly improve efficiency of anaerobic digestion technology and generate value-added chemical and fuel products from the organic wastes. Therefore, this study focused on developing an integrated process that uses biogas energy to power fungal fermentation and converts remaining carbon sources, nutrients, and water in the digestate into biofuel precursor-lipid. The process contains two unit operations of anaerobic digestion and digestate utilization. The digestate utilization includes alkali treatment of the mixture feed of solid and liquid digestates, enzymatic hydrolysis for mono-sugar release, overliming detoxification, and fungal fermentation for lipid accumulation. The experimental results conclude that 5 h and 30 °C were the preferred conditions for the overliming detoxification regarding lipid accumulation of the following fungal cultivation. The repeated-batch fungal fermentation enhanced lipid accumulation, which led to a final lipid concentration of 3.16 g/L on the digestate with 10% dry matter. The mass and energy balance analysis further indicates that the digestate had enough water for the process uses and the biogas energy was able to balance the needs of individual unit operations. A fresh-water-free and energy-positive process of lipid production from anaerobic digestate was achieved by integrating anaerobic digestion and fungal fermentation. The integration addresses the issues that both biofuel industry and waste management encounter-high water and energy demand of biofuel precursor production and few digestate utilization approaches of organic waste treatment.

Short communication: Intestinal digestibility of amino acids in fluid- and particle-associated rumen bacteria determined using a precision-fed cecectomized rooster bioassay.

PubMed

Fonseca, A C; Fredin, S M; Ferraretto, L F; Parsons, C M; Utterback, P L; Shaver, R D

2014-01-01

Microbial protein represents the majority of metabolizable protein absorbed by ruminant animals. Enhanced understanding of the AA digestibility of rumen microbes will improve estimates of metabolizable protein. The objective of this experiment was to determine the digestibility of AA in fluid- (FAB) and particle-associated bacteria (PAB) using the precision-fed cecectomized rooster bioassay. Bacteria were isolated from 4 ruminally cannulated lactating Holstein cows by differential centrifugation, including particle suspension in 0.1% Tween-80 for increased removal of PAB from ruminal digesta. Samples of FAB and PAB were fed to 9 cecectomized roosters to determine standardized digestibility of AA. Total AA digestibility was 76.8 and 75.5% for FAB and PAB, respectively, but did not differ. Differences existed in AA digestibilities within bacterial type when compared with the mean essential AA digestibility value. Compared with previous literature estimates of AA digestibility in microbes (mean = 76%; range = 57-87%) and relative to National Research Council estimates of total AA from rumen bacteria (80%), the precision-fed cecectomized rooster assay is an acceptable in vivo model to determine AA digestibility of rumen bacteria. Copyright © 2014 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Determination of pre-cecal phosphorus digestibility of inorganic phosphates and bone meal products in broilers.

PubMed

van Harn, J; Spek, J W; van Vuure, C A; van Krimpen, M M

2017-05-01

A broiler study was performed to determine the pre-cecal phosphorus (P) digestibility of 5 P sources, 3 from animal (Delfos, Calfos, and porcine bone meal) and 2 of inorganic (monocalcium phosphate [MCP] and dicalcium phosphate [DCP]) origin. Delfos is processed from bones resulting in a dicalcium phosphate product, and Calfos is processed from bones in which part of the gelatin is removed but in which the hydroxy-apatite matrix is preserved. During the first 14 d, birds were housed in floor pens bedded with wood shavings and received a commercial starter diet. At d 14, broilers were randomly assigned to pens (0.9 m2, 10 birds/pen) with a slatted floor. From d 14 onwards, one of the 6 experimental diets (a basal diet, and 5 diets containing the P sources) was provided. Test diets were replicated 6 times, and the basal diet 8 times. Electron microscopy images of test products were made in order to verify whether the spatial structure of the test products could be related to the pre-cecal P digestibility of the same products. Diets met or exceeded CVB (2011) requirements for all nutrients except for P and were formulated to contain a calcium to total P ratio of between 1.4 and 1.6 and a minimal amount of phytate P. Diets contained 5 g/kg titanium oxide as a marker to determine digestibility of P. At d 24 all birds were euthanized, after which the content of the terminal part of the ileum was sampled. The P digestibility was calculated by linear regression according to World's Poultry Science Association (WPSA) protocol for determination of pre-cecal P digestibility. Pre-cecal P digestibility of MCP, DCP, Delfos, Calfos, and porcine bone meal was 88.5, 82.4, 94.5, 86.9, and 78.2%, respectively. Based on visual inspection of electron microscopy images of test products, the spatial structure of the test products might be related to P digestibility. It is concluded that processing of bone meal increases the pre-cecal P digestibility in broilers. © The Author 2017. Published by Oxford University Press on behalf of Poultry Science Association.

Sources of Information about Promising and Exemplary Programs and Materials for Secondary School Science. ERIC/SMEAC Science Education Digest No. 2, 1989.

ERIC Educational Resources Information Center

Helgeson, Stanley L.; Howe, Robert W.

Many school staff and their client communities are concerned about student achievement, skills, and attitudes related to science. To respond to these concerns, staff need to determine how they can improve their science programs by modifying the content and skills emphasized in the curriculum, changing and supplementing instructional materials,…

Sources of Information about Promising and Exemplary Programs and Materials for Elementary School Science. ERIC/SMEAC Science Education Digest No. 1, 1989.

ERIC Educational Resources Information Center

Helgeson, Stanley L.; Howe, Robert W.

Many school staff and their client communities are concerned about pupil achievement, skills, and attitudes related to science. To respond to these concerns, staff need to determine how they can improve their science programs by modifying the content and skills emphasized in the curriculum, changing and supplementing instructional materials,…

The primary structure of aspartate aminotransferase from pig heart muscle. Partial sequences determined by digestion with thermolysin and elastase

PubMed Central

Bossa, Francesco; Barra, Donatella; Carloni, Massimo; Fasella, Paolo; Riva, Francesca; Doonan, Shawn; Doonan, Hilary J.; Hanford, Robin; Vernon, Charles A.; Walker, John M.

1973-01-01

Peptides produced by thermolytic digestion of aminoethylated aspartate aminotransferase and of the oxidized enzyme were isolated and their amino acid sequences determined. Digestion by elastase of the carboxymethylated enzyme gave peptides representing approximately 40% of the primary structure. Fragments from these digests overlapped with previously reported sequences of peptides obtained by peptic and tryptic digestion (Doonan et al., 1972), giving ten composite peptides containing 395 amino acid residues. The amino acid composition of these composite peptides agrees well with that of the intact enzyme. Confirmatory results for some of the present data have been deposited as Supplementary Publication 50018 at the National Lending Library for Science and Technology, Boston Spa, Yorks. LS23 7BQ, U.K., from whom copies can be obtained on the terms indicated in Biochem. J. (1973) 131, 5. PMID:4748834

77 FR 12860 - National Institute of Diabetes and Digestive and Kidney Diseases; Notice of Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-02

... accordance with the provisions set forth in section 552b(c)(6), Title 5 U.S.C., as amended for the review... asked to show one form of identification (for example, a government-issued photo ID, driver's license... Program Nos. 93.847, Diabetes, Endocrinology and Metabolic Research; 93.848, Digestive Diseases and...

Drug Testing. ERIC Digest Series Number EA 35.

ERIC Educational Resources Information Center

Klauke, Amy

The issue of drug testing is the focus of this ERIC Digest. Several aspects of drug testing discussed in question-and-answer format: (1) What is the current status of drug use in the schools? (2) What legal questions arise when schools consider drug testing? (3) How might drug testing be applied in a fair, economical, and legally safe manner? (4)…

Military Air Power: The CADRE Digest of Air Power Opinions and Thoughts

DTIC Science & Technology

1990-10-01

SUPPLEMENTARY NOTES 14. ABSTRACT 15. SUBJECT TERMS Air warfare; Air power; Military art and science 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF...bibliographical references. 1. Air warfare. 2. Air power. 3. Military art and science . 1. Air University (US). Center for Aerospace Doctrine, Research, and...on Policy and War........................................ ........................................57 War as Art and Science

Science and Engineering Indicators: Digest 2012. NSB 12-02

ERIC Educational Resources Information Center

National Science Foundation, 2012

2012-01-01

The United States holds a preeminent position in science and engineering (S&E) in the world, derived in large part from its long history of public and private investment in S&E research and development (R&D) and education. Investment in R&D, science, technology, and education correlate strongly with economic growth, as well the development of a…

Intestinal digestibility of long-chain fatty acids in lactating dairy cows: A meta-analysis and meta-regression.

PubMed

Boerman, J P; Firkins, J L; St-Pierre, N R; Lock, A L

2015-12-01

The objective of this analysis was to examine the intestinal digestibility of individual long-chain fatty acids (FA) in lactating dairy cows. Available data were collated from 15 publications containing 61 treatments, which reported total and individual FA duodenal flows and calculations of intestinal digestibility. All studies involved lactating dairy cows, and estimates of digestibility were based on measurements either between the duodenum and ileum (18 treatments) or between the duodenum and feces (43 treatments). Fatty acid digestibility was calculated for C16:0, C18:0, C18:1 (cis and trans isomers), C18:2, and C18:3. Digestibility of C18:0 was lower than for C18:1 and C18:3, with no difference in digestibility between saturated FA (C16:0 and C18:0). We weighted the studies by the reciprocal of the variance to generate best-fit equations to predict individual FA digestibility based on duodenal flow of FA and dietary independent variables. The flow of C18:0 negatively affected the digestibility of C18:0 and was also included in the best-fit equations for all other 18-carbon FA using duodenal flow characteristics. The type of fat supplemented had an effect on digestibility of individual FA, with whole seeds having reduced digestibility. Our meta-analysis results showed minimal differences in the digestibility of individual FA. However, C18:0 flow through the duodenum had a negative effect on the digestibility of several individual FA, with the largest negative effect on C18:0 digestibility. The mechanisms that reduce C18:0 absorption at high concentrations are unknown and warrant further investigation. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Investigations into Improving Dewaterability at a Bio-P/Anaerobic Digestion Plant.

PubMed

Alm, Rebecca; Sealock, Adam W; Nollet, Yabing; Sprouse, George

2016-11-01

  Metropolitan Council Environmental Services has observed poorer than expected dewatering performance at its Empire Plant. This plant has both anaerobic digestion and enhanced biological phosphorus removal in its treatment train. A research program using pilot-scale anaerobic digesters investigated potential solutions to the plant's poor dewaterability. The dewaterability goal was to increase the cake solids from 12% total solids (TS) to 16% TS or higher. This research investigated 20 different reactor conditions including chemical, feed sludge, and digested sludge treatments. At the pilot scale, unaerated storage of waste activated sludge prior to thickening and addition of ferric chloride to digestion was found to achieve dewatered cake solids of nearly 17% TS with the added benefit of reducing polymer demand. Issues including the amount of chemical required and the resulting volatile solids destruction influence the viability of the process change, so a full-scale pilot and financial analysis is recommended before making permanent process changes.

USSR Space Life Sciences Digest, volume 2, no. 3

NASA Technical Reports Server (NTRS)

Lewis, C. S.

1981-01-01

Soviet scientists are making significant contributions to the field of space medicine and biology through their active manned space program, frequent biosatellites, and extensive ground-based research. An overview of the developments and direction of the USSR Space Life Sciences Program is provided.

Licorice Root

MedlinePlus

... How Medications and Supplements Can Interact Know the Science: The Facts About Health News Stories NCCIH Clearinghouse The NCCIH ... as Dietary Supplements: What You Need to Know ), fact sheets on a variety of specific supplement ingredients ... for liver diseases. Digestive Diseases and Sciences. 2005;50(10):1807-1812. Jalili J, Askeroglu ...

USSR Space Life Sciences Digest, volume 2, no. 4

NASA Technical Reports Server (NTRS)

Lewis, C. S.; Donnelly, K.

1981-01-01

Soviet scientists are making significant contributions to the field of space medicine and biology through their active manned space program, frequent biosatellites, and extensive ground-based research. An overview of the developments and direction of the USSR Space Life Sciences Program is provided.

Top-cited articles in digestive system disease from 1950 to 2013.

PubMed

Tang, Xiaowei; Gong, Wei; Yuan, Fangfang; Li, Ran; Han, Xiaomei; Huang, Silin; Zhi, Fachao; Jiang, Bo

2016-01-01

Examination of top-cited articles is a tool that can help to identify and monitor outstanding scientific researches and landmark papers. We aimed to identify the 100 most cited published papers in peer-reviewed biomedical journals in the field of digestive diseases and to examine their characteristics. The Web of Science (including Science Citation Index) was searched for the most cited papers related to digestive diseases, published from 1955 to the present. The top 100 most cited articles were identified. The number of citations, countries, and institutions of origin, year of publication, study design, topic, and levels of evidence of the articles were noted and analyzed. The most top-cited articles had a mean of 1375 citations. These articles were published between 1978 and 2009 in 29 high-impact journals, with the New England Journal of Medicine (n = 22) topping the list. Of the 100 articles, 34 were clinical studies, 15 were review articles, and 34 were concerned basic science. These articles came from 18 countries, with the USA contributing most of the top-cited articles (n = 53). Eighty-seven institutions produced these 100 top-cited articles, led by the University of Barcelona (n = 4). Seven persons authored two or more of these top-cited articles. The mostly represented specialty was gastrointestinal oncology (n = 49). Our study can give a historical perspective on the scientific progress of digestive diseases, as well as allow for recognition of most important advances in this area and provide useful information to guide future researches. © 2015 Journal of Gastroenterology and Hepatology Foundation and Wiley Publishing Asia Pty Ltd.

American Laundry Digest Buyer's Guide. Manufacturers directory.

PubMed

1991-06-15

The following is the annual American Laundry Digest Buyer's Guide which is being circulated to all segments of the laundry industry. The Guide contains a list of manufacturers who responded to our questionnaire. This is followed by a list of product categories and the various manufacturers who make these products. You may contact these companies directly or by using the reader service card in this issue.

The Integrity of Digital Information: Mechanics and Definitional Issues.

ERIC Educational Resources Information Center

Lynch, Clifford A.

1994-01-01

Considers issues regarding the migration of a system of literature into electronic formats. Highlights include integrity in an information distribution system; digest technology; tracings that permit detection of copied digital objects; verifying sources; digital signature technology and cryptography; electronic publishing; and intellectual…

Evaluation, Language, and Untranslatables

ERIC Educational Resources Information Center

Dahler-Larsen, Peter; Abma, Tineke; Bustelo, María; Irimia, Roxana; Kosunen, Sonja; Kravchuk, Iryna; Minina, Elena; Segerholm, Christina; Shiroma, Eneida; Stame, Nicoletta; Tshali, Charlie Kabanga

2017-01-01

The issue of translatability is pressing in international evaluation, in global transfer of evaluative instruments, in comparative performance management, and in culturally responsive evaluation. Terms that are never fully understood, digested, or accepted may continue to influence issues, problems, and social interactions in and around and after…

Conserving Our Health. Seychelles Integrated Science. [Teacher and Pupil Booklets]. Unit 12.

ERIC Educational Resources Information Center

Brophy, M.; Fryars, M.

Seychelles Integrated Science (SIS), a 3-year laboratory-based science program for students (ages 11-15) in upper primary grades 7, 8, and 9, was developed from an extensive evaluation and modification of previous P7-P9 materials. This P9 SIS unit deals with conserving health, focusing on such body processes as breathing, digestion, excretion,…

Women and Minorities in the Science, Mathematics and Engineering Pipeline. ERIC Digest.

ERIC Educational Resources Information Center

Chang, June C.

Over the next ten years, the United States will need to train an additional 1.9 million workers in the sciences. Increased participation of women and minorities is essential in meeting the projected need for Science, Mathematics, and Engineering (SME) workers. Women, who received 56% of B.A.'s overall, comprised 37% of the SME bachelor degrees…

Evaluation of the National Research Council (2001) dairy model and derivation of new prediction equations. 1. Digestibility of fiber, fat, protein, and nonfiber carbohydrate.

PubMed

White, R R; Roman-Garcia, Y; Firkins, J L; VandeHaar, M J; Armentano, L E; Weiss, W P; McGill, T; Garnett, R; Hanigan, M D

2017-05-01

Evaluation of ration balancing systems such as the National Research Council (NRC) Nutrient Requirements series is important for improving predictions of animal nutrient requirements and advancing feeding strategies. This work used a literature data set (n = 550) to evaluate predictions of total-tract digested neutral detergent fiber (NDF), fatty acid (FA), crude protein (CP), and nonfiber carbohydrate (NFC) estimated by the NRC (2001) dairy model. Mean biases suggested that the NRC (2001) lactating cow model overestimated true FA and CP digestibility by 26 and 7%, respectively, and under-predicted NDF digestibility by 16%. All NRC (2001) estimates had notable mean and slope biases and large root mean squared prediction error (RMSPE), and concordance (CCC) ranged from poor to good. Predicting NDF digestibility with independent equations for legumes, corn silage, other forages, and nonforage feeds improved CCC (0.85 vs. 0.76) compared with the re-derived NRC (2001) equation form (NRC equation with parameter estimates re-derived against this data set). Separate FA digestion coefficients were derived for different fat supplements (animal fats, oils, and other fat types) and for the basal diet. This equation returned improved (from 0.76 to 0.94) CCC compared with the re-derived NRC (2001) equation form. Unique CP digestibility equations were derived for forages, animal protein feeds, plant protein feeds, and other feeds, which improved CCC compared with the re-derived NRC (2001) equation form (0.74 to 0.85). New NFC digestibility coefficients were derived for grain-specific starch digestibilities, with residual organic matter assumed to be 98% digestible. A Monte Carlo cross-validation was performed to evaluate repeatability of model fit. In this procedure, data were randomly subsetted 500 times into derivation (60%) and evaluation (40%) data sets, and equations were derived using the derivation data and then evaluated against the independent evaluation data. Models derived with random study effects demonstrated poor repeatability of fit in independent evaluation. Similar equations derived without random study effects showed improved fit against independent data and little evidence of biased parameter estimates associated with failure to include study effects. The equations derived in this analysis provide interesting insight into how NDF, starch, FA, and CP digestibilities are affected by intake, feed type, and diet composition. The Authors. Published by the Federation of Animal Science Societies and Elsevier Inc. on behalf of the American Dairy Science Association®. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

The Cutting Up: Fish a la Science.

ERIC Educational Resources Information Center

Rossman, Michael

1983-01-01

A teacher describes how a tuna, bought for consumption, can first provide the basis for a science lesson for preschool and first-grade students. As the fish is dissected, the teacher explains the functions of various body parts such as the heart and the digestive system. (PP)

Phun Week: Understanding Physiology

ERIC Educational Resources Information Center

Limson, Mel; Matyas, Marsha Lakes

2009-01-01

Topics such as sports, exercise, health, and nutrition can make the science of physiology relevant and engaging for students. In addition, many lessons on these topics, such as those on the cardiovascular, respiratory, and digestive systems, align with national and state life science education standards. Physiology Understanding Week (PhUn…

Translations on USSR Science and Technology, Physical Sciences and Technology, Number 17

DTIC Science & Technology

1977-08-23

the amelioration of soils, particularly alkali soils, regula- tion of the activity of the lymphatic and venous vessels, the physiology of digestion...strength of useful and harmful invertebrates, animal toxoplasmosis and rabid- ity, the physiology and biochemistry of microorganisms, the genetics and

Enhanced Versus Conventional Sludge Anaerobic Processes: Performances and Techno-Economic Assessment.

PubMed

Gianico, Andrea; Bertanza, Giorgio; Braguglia, Camilla M; Canato, Matteo; Gallipoli, Agata; Laera, Giuseppe; Levantesi, Caterina; Mininni, Giuseppe

2016-05-01

Sewage sludge processing is a key issue in water resource recovery facilities due to the inefficacy of conventional treatments to produce high quality biosolids to be safely used in agriculture. Under this framework, the performances of several enhanced stabilization processes, namely ultrasound-pretreated Mesophilic Anaerobic Digestion (US+MAD), thermophilic anaerobic digestion (TAD), thermal-pretreated TAD (TH+TAD) and ultrasound-pretreated inverse Temperature Phased Anaerobic Digestion (US+iTPAD) have been investigated. Such enhanced processes resulted in higher biogas yields and higher destruction of pathogens with respect to conventional MAD process, thus suggesting their feasibility in full-scale implementation perspectives. A procedure for technical-economic comparison of new sludge processing lines against conventional ones (benchmarking) was developed, based on the definition of technical issues (e.g. reliability, complexity, etc.) which are rated for each situation. Moreover, capital and operating costs were estimated. The enhanced processes analyzed in this work showed some potentially critical items, mainly related to energy balance and reagent consumption.

Lack of any association between insertion/deletion (I/D) polymorphisms in the angiotensin-converting enzyme gene and digestive system cancer risk: a meta-analysis.

PubMed

Liu, Jin-Fei; Xie, Hao-Jun; Cheng, Tian-Ming

2013-01-01

To investigate the association between the gene polymorphisms of angiotensin-converting enzyme (ACE) and digestive system cancer risk. A search was performed in Pubmed, Medline, ISI Web of Science and Chinese Biomedical (CBM) databases, covering all studies until Sep 1st, 2013. Statistical analysis was performed by using Revman5.2 and STATA 12.0. A total of 15 case-control studies comprising 2,390 digestive system cancer patients and 9,706 controls were identified. No significant association was found between the I/D polymorphism and digestive cancer risk (OR =0.93, 95%CI = (0.75, 1.16), P =0.53 for DD+DI vs. II). In the subgroup analysis by ethnicity and cancer type, no significant associations were found for the comparison of DD+DI vs. II. Results from other comparative genetic models also indicated a lack of associations between this polymorphism and digestive system cancer risks. This meta-analysis suggested that the ACE D/I polymorphism might not contribute to the risk of digestive system cancer.

Bringing nursing science to the classroom: a collaborative project.

PubMed

Reams, Susan; Bashford, Carol

2009-01-01

This project resulted as a collaborative effort on the part of a public school system and nursing faculty. The fifth grade student population utilized in this study focused on the skeletal, muscular, digestive, circulatory, respiratory, and nervous systems as part of their school system's existing science and health curriculum. The intent of the study was to evaluate the impact on student learning outcomes as a result of nursing-focused, science-based, hands-on experiential activities provided by nursing faculty in the public school setting. An assessment tool was created for pretesting and posttesting to evaluate learning outcomes resulting from the intervention. Over a two day period, six classes consisting of 25 to 30 students each were divided into three equal small groups and rotated among three interactive stations. Students explored the normal function of the digestive system, heart, lungs, and skin. Improvement in learning using the pretest and posttest assessment tools were documented.

Anaerobic digestion of food waste: A review focusing on process stability.

PubMed

Li, Lei; Peng, Xuya; Wang, Xiaoming; Wu, Di

2018-01-01

Food waste (FW) is rich in biomass energy, and increasing numbers of national programs are being established to recover energy from FW using anaerobic digestion (AD). However process instability is a common operational issue for AD of FW. Process monitoring and control as well as microbial management can be used to control instability and increase the energy conversion efficiency of anaerobic digesters. Here, we review research progress related to these methods and identify existing limitations to efficient AD; recommendations for future research are also discussed. Process monitoring and control are suitable for evaluating the current operational status of digesters, whereas microbial management can facilitate early diagnosis and process optimization. Optimizing and combining these two methods are necessary to improve AD efficiency. Copyright © 2017 Elsevier Ltd. All rights reserved.

Rapid micro-scale proteolysis of proteins for MALDI-MS peptide mapping using immobilized trypsin

NASA Astrophysics Data System (ADS)

Gobom, Johan; Nordhoff, Eckhard; Ekman, Rolf; Roepstorff, Peter

1997-12-01

In this study we present a rapid method for tryptic digestion of proteins using micro-columns with enzyme immobilized on perfusion chromatography media. The performance of the method is exemplified with acyl-CoA-binding protein and reduced carbamidomethylated bovine serum albumin. The method proved to be significantly faster and yielded a better sequence coverage and an improved signal-to-noise ratio for the MALDI-MS peptide maps, compared to in-solution- and on-target digestion. Only a single sample transfer step is required, and therefore sample loss due to adsorption to surfaces is reduced, which is a critical issue when handling low picomole to femtomole amounts of proteins. An example is shown with on-column proteolytic digestion and subsequent elution of the digest into a reversed-phase micro-column. This is useful if the sample contains large amounts of salt or is too diluted for MALDI-MS analysis. Furthermore, by step-wise elution from the reversedphase column, a complex digest can be fractionated, which reduces signal suppression and facilitates data interpretation in the subsequent MS-analysis. The method also proved useful for consecutive digestions with enzymes of different cleavage specificity. This is exemplified with on-column tryptic digestion, followed by reversed-phase step-wise elution, and subsequent on-target V8 protease digestion.

Accessing the reproducibility and specificity of pepsin and other aspartic proteases.

PubMed

Ahn, Joomi; Cao, Min-Jie; Yu, Ying Qing; Engen, John R

2013-06-01

The aspartic protease pepsin is less specific than other endoproteinases. Because aspartic proteases like pepsin are active at low pH, they are utilized in hydrogen deuterium exchange mass spectrometry (HDX MS) experiments for digestion under hydrogen exchange quench conditions. We investigated the reproducibility, both qualitatively and quantitatively, of online and offline pepsin digestion to understand the compliment of reproducible pepsin fragments that can be expected during a typical pepsin digestion. The collection of reproducible peptides was identified from >30 replicate digestions of the same protein and it was found that the number of reproducible peptides produced during pepsin digestion becomes constant above 5-6 replicate digestions. We also investigated a new aspartic protease from the stomach of the rice field eel (Monopterus albus Zuiew) and compared digestion efficiency and specificity to porcine pepsin and aspergillopepsin. Unique cleavage specificity was found for rice field eel pepsin at arginine, asparagine, and glycine. Different peptides produced by the various proteases can enhance protein sequence coverage and improve the spatial resolution of HDX MS data. This article is part of a Special Issue entitled: Mass spectrometry in structural biology. Copyright © 2012 Elsevier B.V. All rights reserved.

The National Ocean Sciences Bowl: An Effective Model for Engaging High School Students in Ocean Science

NASA Astrophysics Data System (ADS)

Holloway, A. E.

2016-02-01

The National Ocean Sciences Bowl (NOSB) is an informal high school education program that engages students in ocean and environmental science and exposes them to the breadth of ocean-related careers. The NOSB strives to train the next generation of interdisciplinary capable scientists and build a STEM-literate society that harnesses the power of ocean and climate science to address environmental, economic, and societal issues. Through the NOSB, students not only learn scientific principles, but also apply them to compelling real-world problems. The NOSB provides a richer STEM education and exposes students to ocean science topics they may not otherwise study through classroom curriculum. A longitudinal study that began in 2007 has shown that NOSB participants have an enhanced interest in ocean-related hobbies and environmental stewardship and an increasing number of these students have remained in the STEM pipeline and workforce.While the NOSB is primarily an academic competition, it has evolved since its creation in 1998 to include a variety of practical and professional development components. One of the program enhancements, the Scientific Expert Briefing (SEB), gives students the opportunity to apply what they have studied and think critically about current and ongoing ocean science challenges. The SEB helps students connect their knowledge of ocean science with current and proposed policy initiatives. Students gain significant research, writing, and presentation skills, while enhancing their ability for collaboration and consensus building, all vital workforce skills. Ultimately, the SEB teaches students how to communicate complex scientific research into digestible information for decision-makers and the general public.This poster will examine the impact of the NOSB and its role in strengthening the workforce pipeline through a combination of independent learning, competition, and opportunities for communication skills development.

Co-digestion of rice straw and cow dung to supply cooking fuel and fertilizers in rural India: Impact on human health, resource flows and climate change.

PubMed

Sfez, Sophie; De Meester, Steven; Dewulf, Jo

2017-12-31

Anaerobic digestion of cow dung with new feedstock such as crop residues to increase the biogas potential is an option to help overcoming several issues faced by India. Anaerobic digestion provides biogas that can replace biomass cooking fuels and reduce indoor air pollution. It also provides digestate, a fertilizer that can contribute to compensate nutrient shortage on agricultural land. Moreover, it avoids the burning of rice straw in the fields which contributes to air pollution in India and climate change globally. Not only the technical and economical feasibility but also the environmental sustainability of such systems needs to be assessed. The potential effects of implementing community digesters co-digesting cow dung and rice straw on carbon and nutrients flows, human health, resource efficiency and climate change are analyzed by conducting a Substance Flow Analysis and a Life Cycle Assessment. The implementation of the technology is considered at the level of the state of Chhattisgarh. Implementing this scenario reduces the dependency of the rural community to nitrogen and phosphorus from synthetic fertilizers only by 0.1 and 1.6%, respectively, but the dependency of farmers to potassium from synthetic fertilizers by 31%. The prospective scenario returns more organic carbon to agricultural land and thus has a potential positive effect on soil quality. The implementation of the prospective scenario can reduce the health impact of the local population by 48%, increase the resource efficiency of the system by 60% and lower the impact on climate change by 13%. This study highlights the large potential of anaerobic digestion to overcome the aforementioned issues faced by India. It demonstrates the need to couple local and global assessments and to conduct analyses at the substance level to assess the sustainability of such systems. Copyright © 2017 Elsevier B.V. All rights reserved.

Thromboembolism prevention in surgery of digestive cancer.

PubMed

Malafaia, Osvaldo; Montagnini, Andre Luís; Luchese, Angélica; Accetta, Antonio Carlos; Zilberstein, Bruno; Malheiros, Carlos Alberto; Jacob, Carlos Eduardo; Quireze-Junior, Claudemiro; Bresciani, Cláudio José Caldas; Kruel, Cleber Dario Pinto; Cecconello, Ivan; Sad, Eduardo Fonseca; Ohana, Jorge Alberto Langbeck; Aguilar-Nascimento, José Eduardo de; Manso, José Eduardo Ferreira; Ribas-Filho, Jurandir Marcondes; Santo, Marco Aurélio; Andreollo, Nelson Adami; Torres, Orlando Jorge Martins; Herman, Paulo; Cuenca, Ronaldo Mafia; Sallum, Rubens Antônio Aissar; Bernardo, Wanderley Marques

2012-01-01

The venous thromboembolism is a common complication after surgical treatment in general and, in particular, on the therapeutic management on cancer. Surgery of the digestive tract has been reported to induce this complication. Patients with digestive cancer have substantial increased risk of initial or recurrent thromboembolism. To provide to surgeons working in digestive surgery and general surgery guidance on how to make safe thromboprophylaxis for patients requiring operations in the treatment of their gastrointestinal malignancies. The guideline was based on 15 relevant clinical issues and related to the risk factors, treatment and prognosis of the patient undergoing surgical treatment of cancer on digestive tract. They focused thromboembolic events associated with operations and thromboprophylaxis. The questions were structured using the PICO (Patient, Intervention or Indicator, Comparison and Outcome), allowing strategies to generate evidence on the main primary bases of scientific information (Medline / Pubmed, Embase, Lilacs / Scielo, Cochrane Library, PreMedline via OVID). Evidence manual search was also conducted (BDTD and IBICT). The evidence was recovered from the selected critical evaluation using discriminatory instruments (scores) according to the category of the question: risk, prognosis and therapy (JADAD Randomized Clinical Trials and New Castle Ottawa Scale for studies not randomized). After defining potential studies to support the recommendations, they were selected by the strength of evidence and grade of recommendation according to the classification of Oxford, including the available evidence of greater strength. A total of 53,555 papers by title and / or abstract related to issue were found. Of this total were selected (1st selection) 478 studies that were evaluated as full-text. From them to support the recommendations were included in the consensus 132 papers. The 15 questions could be answered with evidence grade of articles with 31 A, 130 B, 1 C and 0 D. It was possible to prepare safe recommendations as guidance for thromboembolism prophylaxis in operations on the digestive tract malignancies, addressing the most frequent topics of everyday work of digestive and general surgeons.

Effects of varying dietary ratios of corn silage to alfalfa silage on digestion of neutral detergent fiber in lactating dairy cows.

PubMed

Lopes, F; Cook, D E; Combs, D K

2015-09-01

An in vivo study was performed to test an in vitro procedure and model that predicts total-tract neutral detergent fiber (NDF) digestibility for lactating dairy cattle. Corn silage (CS) and alfalfa silage (AS) were used as forages for this study. These forages had similar NDF composition, but fiber in the CS contained less indigestible NDF compared with AS (35.5 and 47.8% of indigestible NDF, respectively). The in vitro method estimated rate of digestion of alfalfa potentially digestible NDF to be approximately 2 times faster than CS fiber (6.11 and 3.21%/h, respectively). Four diets were formulated containing different proportions of CS to AS: 100CS:0AS, 67CS:33AS, 33CS:67AS, and 0CS:100AS, as percentage of diet DM basis. The objective was to construct diets that contained approximately similar levels of NDF but with different pool sizes and rates of digestion of potentially digestible NDF. Diets were fed to 8 ruminally cannulated, multiparous, lactating dairy cows in a replicated 4×4 Latin square with 21-d periods. Total-tract fiber digestibility and fiber digestion kinetic parameters observed in vivo were compared with the values predicted by the in vitro assay and model. Total-tract NDF digestibility coefficients were similar (41.8 and 40.6% of total NDF) for the in vitro and in vivo methods, respectively. As the proportion of dietary alfalfa increased, the digestibility of NDF increased. The rate of digestion of potentially digestible NDF predicted from the in vitro assay was also similar to what was observed in vivo. Results suggest that the in vitro total-tract NDF digestibility model could be used to predict rate of fiber digestion and NDF digestibility for lactating dairy cattle. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Trends in Library and Information Science: 1989. ERIC Digest.

ERIC Educational Resources Information Center

Eisenberg, Michael B.

Based on a content analysis of professional journals, conference proceedings, ERIC documents, annuals, and dissertations in library and information science, the following current trends in the field are discussed: (1) there are important emerging roles and responsibilities for information professionals; (2) the status and image of librarians…

Your Digestive System (For Kids)

MedlinePlus

... next class. In a few minutes you're thinking about the capital of Oregon or your science fair project. You've completely forgotten about that pizza lunch you just ate. But it's still in your stomach — sort of like a science experiment that happens all the time! The Mouth Starts ...

Teaching Science in the Field. ERIC Digest.

ERIC Educational Resources Information Center

Landis, Carol

Teaching science in the field provides unique opportunities to investigate the natural world. As in the classroom, lessons designed to foster meaningful learning, provide hands-on activities, and promote student inquiry can be effectively implemented in the world's largest laboratories, the natural and built environments of the outdoors. This…

Effects of socioscientific issues-based instruction on argumentation ability and biology concepts of upper secondary school students

NASA Astrophysics Data System (ADS)

Faelt, Surasak; Samiphak, Sara; Pattaradilokrat, Sittiporn

2018-01-01

Argumentation skill is an essential skill needed in students, and one of the competencies in scientific literacy. Through arguing on socioscientific issues, students may gain deeper conceptual understanding. The purpose of this research is to examine the efficacy of a socioscientific issues-based instruction compared with an inquirybased instruction. This is to determine which one is better in promoting 10th grade students' argumentation ability and biology concepts of digestive system and cellular respiration. The forty 10th grade students included in this study were from two mathematics-science program classes in a medium-sized secondary school located in a suburb of Buriram province, Thailand. The research utilizes a quasi-experimental design; pre-test post-test control group design. We developed and implemented 4 lesson plans for both socioscientific issues-based instruction and inquiry-based instruction. Ten weeks were used to collect the data. A paper-based questionnaire and informal interviews were designed to test students' argumentation ability, and the two-tier multiple-choice test was designed to test their biology concepts. This research explore qualitatively and quantitatively students' argumentation abilities and biology concepts, using arithmetic mean, mean of percentage, standard deviation and t-test. Results show that there is no significant difference between the two group regarding mean scores of the argumentation ability. However, there is significant difference between the two groups regarding mean scores of the biology concepts. This suggests that socioscientific issues-based instruction could be used to improve students' biology concepts.

Structural changes of bovine milk fat globules during in vitro digestion.

PubMed

Gallier, S; Ye, A; Singh, H

2012-07-01

An in vitro digestion model that simulated gastric and intestinal fasting conditions was used to monitor the physical, chemical, and structural changes of fat globules from raw bovine milk. During in vitro gastric digestion, the fat globules were stable under low-acidic conditions. Some peptides and β-lactoglobulin were resistant to proteolysis by pepsin. Phospholipids, proteins, and peptides stabilized the globules in the stomach model. During in vitro intestinal digestion, most of the β-lactoglobulin and residual peptides were hydrolyzed by trypsin and chymotrypsin, and the lipolytic products, released from the hydrolysis of the triglyceride core of the globules, led to destabilization and coalescence of the globules. By accumulating at the surface of the fat globules, the lipolytic products formed a lamellar phase and their solubilization by bile salts resulted in the formation of disk-shaped micelles. This study brings new interesting insights on the digestion of bovine milk. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Improved Understanding of In Situ Chemical Oxidation. Technical Objective 2: Soil Reactivity

DTIC Science & Technology

2009-05-01

each reaction tube. The reagents ( sulfuric acid /potassium dichromate/mercury sulfate ) were prepared following standard methods (APHA, 1998). When...reaction tubes. A volume (~20 mL) of potassium dichromate digestion solution (potassium dichromate (BDH Laboratories), sulfuric acid (EM Science...and mercury sulphate (EM Science)) and a sulfuric acid reagent solution ( sulfuric acid (EM Science) and silver sulphate (Alfa Aesar)) were added to

Biogas: Production and utilization

NASA Astrophysics Data System (ADS)

Price, E. C.; Cheremisinoff, P. N.

Among the aspects of biogas production and utilization covered are: (1) the microbiology and biochemistry of the acid and methane production stages in the anaerobic process; (2) factors affecting the process, such as temperature, acidity and alkalinity, nutrients, and cations; (3) denitrification processes and systems; and (4) the process kinetics of suspended growth systems, packed columns, and fluidized beds. Also considered are such issues in the application of this technology as the digestion of municipal treatment plant sludges, animal wastes, food processing wastes and energy crops. Attention is in addition given to anaerobic digester design, offgas measurement of anaerobic digesters, and sludge treatment through soil conditioning and composting.

USSR and Eastern Scientific Abstracts, Biomedical and Behavioral Sciences, Number 62

DTIC Science & Technology

1977-01-18

this concentrate has valuable biological and nutritional properties. Maximum transition from the digestive tract into the blood stream has been... digestion . The extent of these changes 1/2 32 USSR LYCHAGIN, V. V., ADAMOVICH, G. G., MIKHAYLOVA, T. N., KUZLOVA, YU. G., KINZHIBALOVA, ZH. V...ANTIBIOTICS IN THE FEED OF BROILERS Sofia DOKLADY BOLGARSKOY AKADEMII NAUR" in English Vol 29 No 8 1976 pp 1177- 1178 [Abstract] Objections have

The Whiteboard Revolution: Illuminating Science Communication in the Digital Age.

PubMed

Mar, Florie Anne; Ordovas-Montanes, Jose; Oksenberg, Nir; Olson, Alexander M

2016-04-01

Journal-based science communication is not accessible or comprehensible to a general public curious about science and eager for the next wave of scientific innovation. We propose an alternative medium for scientists to communicate their work to the general public in an engaging and digestible way through the use of whiteboard videos. We describe the process of producing science whiteboard videos and the benefits and challenges therein. Copyright © 2016 Elsevier Ltd. All rights reserved.

Effect of maturity and hybrid on ruminal and intestinal digestion of corn silage in dry cows.

PubMed

Peyrat, J; Baumont, R; Le Morvan, A; Nozière, P

2016-01-01

The aim of this study was to evaluate the effect of stage of maturity at harvest on extent of starch, neutral detergent fiber (NDF), and protein digestion, and rumen fermentation in dry cows fed whole-plant corn silage from different hybrids. Four nonlactating Holstein cows cannulated at the rumen and proximal duodenum were fed 4 corn silages differing in hybrid (flint vs. flint-dent) and maturity stage (early vs. late) in a 4 × 4 Latin square design. From early to late maturity, starch content increased (from 234.5 to 348.5 g/kg), whereas total-tract (99.7 to 94.5%) and ruminal starch digestibility (91.3 to 86.5%) decreased significantly. The decrease in ruminal starch digestibility with increasing maturity was similar between hybrids. No effects were found of maturity, hybrid, or maturity × hybrid interaction on total-tract NDF digestibility, ruminal NDF digestibility, true digestibility of N and organic matter in the rumen, or microbial synthesis. Harvesting at later maturity led to increased ruminal ammonia, total volatile fatty acid concentrations, and acetate/propionate ratio but not pH. This study concludes that delaying date of harvest modifies the proportions of digestible starch and NDF supplied to cattle. Adjusting date of corn harvest to modulate amount of rumen-digested starch could be used as a strategy to control nutrient delivery to ruminants. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Cystic Fibrosis Revisited - a Review Study.

PubMed

Klimova, Blanka; Kuca, Kamil; Novotny, Michal; Maresova, Petra

2017-01-01

Cystic fibrosis (CF) is an incurable, chronic disease, which causes severe damages to respiratory and digestive tracts. It is the most common genetically inherited disease among caucasians. This disease is caused by defects in CF genes, the so-called mutations in cystic fibrosis transmembrane conductance regulator (CFTR) gene population. At present over 100,000 people suffer from this disease worldwide. The purpose of this review study is to describe the pathophysiology of CF and provide the latest information on its diagnosis and treatment therapies with respect to the improvement of patient's quality of life and emphasis on targeted specialized care. The methodological approaches include a method of literature review of available sources exploring the issue of cystic fibrosis both from a global and specific perspective point of view. A search was performed in the databases PubMed, MEDLINE, Web of Science, Scopus, Springer and ScienceDirect. Furthermore, other sources cited in the analyzed studies were also examined. On the basis of evaluation of these literature sources, the research issue was explored. The main benefits (e.g., specialized centres for the treatment of CF exist or a new breakthrough in the gene therapy of CF has been made) and limitations (e.g., comorbidity of CF, lifelong and costly treatment, or adverse impact on patient's and caregiver's quality of life) in the treatment of narcolepsy are highlighted. CF requires an integrated treatment approach in specialized CF centers, involving various factors contributing to a better patient's state of health in the form of relevant and well-balanced non-pharmacological and pharmacological therapies. In addition, further large scale clinical trials are needed in order to develop compounds that are aimed at the most common classes of CFTR. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.

Amylase addition increases starch ruminal digestion in first-lactation cows fed high and low starch diets.

PubMed

Nozière, P; Steinberg, W; Silberberg, M; Morgavi, D P

2014-01-01

The objective of this study was to evaluate the effect of an exogenous amylase preparation on digestion of low- and high-starch diets in dairy cattle. Rumen and total-tract nutrient digestibility were measured in a 4×4 Latin square design with 28-d periods using 4 first-lactation cows cannulated at the rumen and duodenum. Corn silage-based diets had 20 or 30% starch, attained by changing the composition of concentrate, with or without addition of an exogenous amylase preparation. Effects of the enzyme additive were observed on ruminal digestibility but not at the total-tract level. Ruminal digestibility of starch increased from 75% in control to 81% with amylase supplementation. This difference in ruminal starch digestion was compensated postruminally, so that the total-tract digestibility of starch was almost complete and did not differ between treatments. The amylase supplement also increased the true ruminal digestibility of organic matter but did not affect microbial N flow to the duodenum. Amylase supplement reduced the proportion of acetate and butyrate and increased that of propionate, particularly in the high-starch diet, where it tended to increase the concentration of total volatile fatty acids in the rumen. Other effects were a higher amylase activity in the solid-associated microbial community and a tendency for lower numbers of protozoa. In contrast, we observed no changes in intake, production, dry matter and fiber (neutral detergent fiber and acid detergent fiber) digestibility, or ruminal digestion, and no or small changes on selected fibrolytic and amylolytic bacteria and on the microbial community in general. We conclude that the exogenous amylase improved starch digestion in the rumen in first-lactation cows with moderate intake and production levels. Copyright © 2014 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

TELESCAN. Volume 4, Issues 1-10, September 1984-June 1985.

ERIC Educational Resources Information Center

TELESCAN, 1985

1985-01-01

A digest about how higher education can use new telecommunications technologies, especially to reach students in off-campus settings, is presented. Ten issues of volume 4 of the newsletter "TELESCAN" include information on legislation and trends in the applications of technology-based instruction in postsecondary education. Also included are…

Towards an Open Learning Environment for the Young Child: Some Principles, Practices and Issues in Curriculum Planning. Notes, Comments...(Child, Family, Community). Digest No. IV.

ERIC Educational Resources Information Center

Prakasha, Veda

This digest explores the question, What types of activities and experiences should a good learning environment offer to the young child to help him grow normally and happily? Part 1 focuses on basic considerations in the development of early childhood care and education (ECCE) curricula. Four chapters concern: (1) the learning needs of the young…

La investigacion sobre la calidad de los programas para ninos de hasta dos anos de edad (Research on Quality in Infant-Toddler Programs). ERIC Digest.

ERIC Educational Resources Information Center

Honig, Alice Sterling

Concern about the quality of infant-toddler care programs has grown recently in response to two factors. The first is the need of employed parents for such care, and the second is research emphasizing the importance of brain development in the early years. This Spanish-language Digest introduces some of the many issues related to the quality of…

Inquiring into the Digestive System

ERIC Educational Resources Information Center

Schroeder, Carlos

2007-01-01

Teaching science by means of inquiry-based projects has the potential to transform the science lab into a place of debate and discovery, but teachers run the risk of either leaving students to work too independently or forcing them to be too dependent on our guidance. To counter these challenges, the author implemented changes in the way topics…

Teaching Science and Mathematics to At Risk Students. ERIC Digest.

ERIC Educational Resources Information Center

Schwartz, Wendy

Traditionally, disadvantaged groups, such as women and minorities, have not excelled in science and math. Often the lack of literacy and achievement in these subjects is due to the following factors: (1) cognitive differences between how the information is presented and how the students process it; (2) lack of familiarity, because of cultural…

Understanding Producers' Intentions and Viewers' Learning Outcomes in a Science Museum Theater Play on Evolution

ERIC Educational Resources Information Center

Peleg, R.; Baram-Tsabari, A.

2016-01-01

Science museums often introduce plays to liven up exhibits, attract visitors to specific exhibitions, and help visitors to "digest" difficult content. Most previous research has concentrated on viewers' learning outcomes. This study uses performance and spectator analyses from the field of theater studies to explore the link between…

USSR Space Life Sciences Digest

NASA Technical Reports Server (NTRS)

Lewis, C. S. (Editor); Donnelly, K. L. (Editor)

1980-01-01

Research in exobiology, life sciences technology, space biology, and space medicine and physiology, primarily using data gathered on the Salyut 6 orbital space station, is reported. Methods for predicting, diagnosing, and preventing the effects of weightlessness are discussed. Psychological factors are discussed. The effects of space flight on plants and animals are reported. Bioinstrumentation advances are noted.

DOE Office of Scientific and Technical Information (OSTI.GOV)

GTI

Manure management is an ever-increasing environmental impact problem within the U.S. livestock industry due to the trends in growing scale of operation of individual animal raising facilities. Anaerobic digestion, the fermentation of organic matter into a mixture of methane and carbon dioxide called biogas, offers the livestock industry a viable solution to this problem. When anaerobic digestion is combined with by-product recovery and biogas utilization, the integrated system can potentially solve manure handling issues while creating significant energy, environmental and economic opportunities. The overall objective of this project was to conduct a laboratory proof-of-concept evaluation to determine the potential energymore » generation and pathogen control benefits of applying anaerobic digestion for the management of swine manure.« less

Pellet Puzzlers.

ERIC Educational Resources Information Center

Hoots, R. A.

1992-01-01

Presents information on owl's taxonomy, characteristics, and influences on man. Describes owl pellets, which are digestive discards, and explains how they can be used to determine the owl's diet as a science activity. (PR)

Central endoscopy reads in inflammatory bowel disease clinical trials: The role of the imaging core lab.

PubMed

Ahmad, Harris; Berzin, Tyler M; Yu, Hui Jing; Huang, Christopher S; Mishkin, Daniel S

2014-08-01

Clinical trials in inflammatory bowel disease (IBD) are evolving at a rapid pace by employing central reading for endoscopic mucosal assessment in a field that was, historically, largely based on assessments by local physicians. This transition from local to central reading carries with it numerous technical, operational, and scientific challenges, many of which can be resolved by imaging core laboratories (ICLs), a concept that has a longer history in clinical trials in a number of diseases outside the realm of gastroenterology. For IBD trials, ICLs have the dual goals of providing objective, consistent assessments of endoscopic findings using central-reading paradigms whilst providing important expertise with regard to operational issues and regulatory expectations. This review focuses on current approaches to using ICLs for central endoscopic reading in IBD trials. © The Author(s) 2014. Published by Oxford University Press and the Digestive Science Publishing Co. Limited.

Teachers' Views on World Issues: A Digest of the Policies of WCOTP.

ERIC Educational Resources Information Center

World Confederation of Organizations of the Teaching Profession, Morges (Switzerland).

This document summarizes the policies of the World Confederation of Organisations of the Teaching Profession (WCOTP) in relation to a wide range of topics affecting education and the status of teachers. Topical areas are covered in four sections: education, teachers, women, and contemporary world issues. Section 1, "Education," looks at…

14 CFR 1206.402 - Documents available for inspection at NASA Information Centers.

Code of Federal Regulations, 2011 CFR

2011-01-01

...) Cumulative Index to Selected Speeches and News Releases issued by NASA Headquarters; (7) Index/Digest of... index thereto; (9) Copies of Environmental Impact Statements filed by NASA under the National Environmental Policy Act of 1969; (10) Collection of all issues of “NASA Activities”; (11) List of licenses...

14 CFR 1206.402 - Documents available for inspection at NASA Information Centers.

Code of Federal Regulations, 2013 CFR

2013-01-01

...) Cumulative Index to Selected Speeches and News Releases issued by NASA Headquarters; (7) Index/Digest of... index thereto; (9) Copies of Environmental Impact Statements filed by NASA under the National Environmental Policy Act of 1969; (10) Collection of all issues of “NASA Activities”; (11) List of licenses...

Stability of milk fat globule membrane proteins toward human enzymatic gastrointestinal digestion.

PubMed

Le, T T; Van de Wiele, T; Do, T N H; Debyser, G; Struijs, K; Devreese, B; Dewettinck, K; Van Camp, J

2012-05-01

The milk fat globule membrane (MFGM) fraction refers to the thin film of polar lipids and membrane proteins that surrounds fat globules in milk. It is its unique biochemical composition that renders MFGM with some beneficial biological activities, such as anti-adhesive effects toward pathogens. However, a prerequisite for the putative bioactivity of MFGM is its stability during gastrointestinal digestion. We, therefore, subjected MFGM material, isolated from raw milk, to an in vitro enzymatic gastrointestinal digestion. Sodium dodecyl sulfate PAGE, in combination with 2 staining methods, Coomassie Blue and periodic acid Schiff staining, was used to evaluate polypeptide patterns of the digest, whereas mass spectrometry was used to confirm the presence of specific MFGM proteins. Generally, it was observed that glycoproteins showed higher resistance to endogenous proteases compared with non-glycosylated proteins. Mucin 1 displayed the highest resistance to digestion and a considerable part of this protein was still detected at its original molecular weight after gastric and small intestine digestion. Cluster of differentiation 36 was also quite resistant to pepsin. A significant part of periodic acid Schiff 6/7 survived the gastric digestion, provided that the lipid moiety was not removed from the MFGM material. Overall, MFGM glycoproteins are generally more resistant to gastrointestinal digestion than serum milk proteins and the presence of lipids, besides glycosylation, may protect MFGM glycoproteins from gastrointestinal digestion. This gastrointestinal stability makes MFGM glycoproteins amenable to further studies in which their putative health-promoting effects can be explored. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

JPRS Report, Science & Technology, USSR: Science & Technology Policy

DTIC Science & Technology

1990-06-25

observations of volunteers, who consumed pork, broiler meat, eggs, and milk, which were obtained with the use of protein-vitamin concentrate, did not...pork will decrease by 10 percent, broiler meat—by 13 percent, and eggs—by 7 percent. Our diet, which is limited as it is, will become even more...of the digestive organs. 5. Doctor of Technical Sciences Anatoliy Petrovich Burdukov, deputy director of the Institute of Thermal Physics of the

Prognostic value of long noncoding RNA MALAT1 in digestive system malignancies.

PubMed

Zhai, Hui; Li, Xiao-Mei; Maimaiti, Ailifeire; Chen, Qing-Jie; Liao, Wu; Lai, Hong-Mei; Liu, Fen; Yang, Yi-Ning

2015-01-01

MALAT1, a newly discovered long noncoding RNA (lncRNA), has been reported to be highly expressed in many types of cancers. This meta-analysis summarizes its potential prognostic value in digestive system malignancies. A quantitative meta-analysis was performed through a systematic search in PubMed, Cochrane Library, Web of Science and Chinese National Knowledge Infrastructure (CNKI) for eligible papers on the prognostic impact of MALAT1 in digestive system malignancies from inception to Apr. 25, 2015. Pooled hazard ratios (HRs) with 95% confidence interval (95% CI) were calculated to summarize the effect. Five studies were included in the study, with a total of 527 patients. A significant association was observed between MALAT1 abundance and poor overall survival (OS) of patients with digestive system malignancies, with pooled hazard ratio (HR) of 7.68 (95% confidence interval [CI]: 4.32-13.66, P<0.001). Meta sensitivity analysis suggested the reliability of our findings. No publication bias was observed. MALAT1 abundance may serve as a novel predictive factor for poor prognosis in patients with digestive system malignancies.

Resistant starch: promise for improving human health.

PubMed

Birt, Diane F; Boylston, Terri; Hendrich, Suzanne; Jane, Jay-Lin; Hollis, James; Li, Li; McClelland, John; Moore, Samuel; Phillips, Gregory J; Rowling, Matthew; Schalinske, Kevin; Scott, M Paul; Whitley, Elizabeth M

2013-11-01

Ongoing research to develop digestion-resistant starch for human health promotion integrates the disciplines of starch chemistry, agronomy, analytical chemistry, food science, nutrition, pathology, and microbiology. The objectives of this research include identifying components of starch structure that confer digestion resistance, developing novel plants and starches, and modifying foods to incorporate these starches. Furthermore, recent and ongoing studies address the impact of digestion-resistant starches on the prevention and control of chronic human diseases, including diabetes, colon cancer, and obesity. This review provides a transdisciplinary overview of this field, including a description of types of resistant starches; factors in plants that affect digestion resistance; methods for starch analysis; challenges in developing food products with resistant starches; mammalian intestinal and gut bacterial metabolism; potential effects on gut microbiota; and impacts and mechanisms for the prevention and control of colon cancer, diabetes, and obesity. Although this has been an active area of research and considerable progress has been made, many questions regarding how to best use digestion-resistant starches in human diets for disease prevention must be answered before the full potential of resistant starches can be realized.

Resistant Starch: Promise for Improving Human Health12

PubMed Central

Birt, Diane F.; Boylston, Terri; Hendrich, Suzanne; Jane, Jay-Lin; Hollis, James; Li, Li; McClelland, John; Moore, Samuel; Phillips, Gregory J.; Rowling, Matthew; Schalinske, Kevin; Scott, M. Paul; Whitley, Elizabeth M.

2013-01-01

Ongoing research to develop digestion-resistant starch for human health promotion integrates the disciplines of starch chemistry, agronomy, analytical chemistry, food science, nutrition, pathology, and microbiology. The objectives of this research include identifying components of starch structure that confer digestion resistance, developing novel plants and starches, and modifying foods to incorporate these starches. Furthermore, recent and ongoing studies address the impact of digestion-resistant starches on the prevention and control of chronic human diseases, including diabetes, colon cancer, and obesity. This review provides a transdisciplinary overview of this field, including a description of types of resistant starches; factors in plants that affect digestion resistance; methods for starch analysis; challenges in developing food products with resistant starches; mammalian intestinal and gut bacterial metabolism; potential effects on gut microbiota; and impacts and mechanisms for the prevention and control of colon cancer, diabetes, and obesity. Although this has been an active area of research and considerable progress has been made, many questions regarding how to best use digestion-resistant starches in human diets for disease prevention must be answered before the full potential of resistant starches can be realized. PMID:24228189

Prognostic value of long noncoding RNA MALAT1 in digestive system malignancies

PubMed Central

Zhai, Hui; Li, Xiao-Mei; Maimaiti, Ailifeire; Chen, Qing-Jie; Liao, Wu; Lai, Hong-Mei; Liu, Fen; Yang, Yi-Ning

2015-01-01

Background: MALAT1, a newly discovered long noncoding RNA (lncRNA), has been reported to be highly expressed in many types of cancers. This meta-analysis summarizes its potential prognostic value in digestive system malignancies. Methods: A quantitative meta-analysis was performed through a systematic search in PubMed, Cochrane Library, Web of Science and Chinese National Knowledge Infrastructure (CNKI) for eligible papers on the prognostic impact of MALAT1 in digestive system malignancies from inception to Apr. 25, 2015. Pooled hazard ratios (HRs) with 95% confidence interval (95% CI) were calculated to summarize the effect. Results: Five studies were included in the study, with a total of 527 patients. A significant association was observed between MALAT1 abundance and poor overall survival (OS) of patients with digestive system malignancies, with pooled hazard ratio (HR) of 7.68 (95% confidence interval [CI]: 4.32-13.66, P<0.001). Meta sensitivity analysis suggested the reliability of our findings. No publication bias was observed. Conclusions: MALAT1 abundance may serve as a novel predictive factor for poor prognosis in patients with digestive system malignancies. PMID:26770406

The Body Game: Developed by Undergraduates for Key Stage 2 National Curriculum Science.

ERIC Educational Resources Information Center

Verran, J.; Brintnell, B.; Brownrigg, N.; Garcia, R.; Green, A.

1997-01-01

Describes a game developed for school children which addresses part of the Science National Curriculum. The board is a human body with organs on view. Questions relate to different organ systems, body parts, and processes. Topics include breathing, digestion and metabolism, blood and circulation, and the sensory organs and teeth. (AIM)

Computers in Life Science Education, Volume 7, Numbers 1-12.

ERIC Educational Resources Information Center

Computers in Life Science Education, 1990

1990-01-01

The 12 digests of Computers in Life Science Education from 1990 are presented. The articles found in chronological sequence are as follows: "The Computer as a Teaching Tool--How Far Have We Come? Where Are We Going?" (Modell); "Where's the Software--Part 1"; "Keeping Abreast of the Literature" (which appears quarterly); "Where's the Software--Part…

Effect of processing on polyamine content and bioactive peptides released after in vitro gastrointestinal digestion of infant formulas.

PubMed

Gómez-Gallego, C; Recio, I; Gómez-Gómez, V; Ortuño, I; Bernal, M J; Ros, G; Periago, M J

2016-02-01

This study examined the influence of processing on polyamines and peptide release after the digestion of a commercial infant formula designed for children during the first months of life. Polyamine oxidase activity was not suppressed during the manufacturing process, which implicates that polyamine concentrations were reduced over time and during infant formula self-life. In gel electrophoresis, in vitro gastrointestinal digestion of samples with reduced amount of enzymes and time of digestion shows an increase in protein digestibility, reflected in the increase in nonprotein nitrogen after digestion and the disappearance of β-lactoglobulin and α-lactalbumin bands in gel electrophoresis. Depending on the sample, between 22 and 87 peptides were identified after gastrointestinal digestion. A peptide from β-casein f(98-105) with the sequence VKEAMAPK and antioxidant activity appeared in all of the samples. Other peptides with antioxidant, immunomodulatory, and antimicrobial activities were frequently found, which could have an effect on infant health. The present study confirms that the infant formula manufacturing process determines the polyamine content and peptidic profile after digestion of the infant formula. Because compositional dissimilarity between human milk and infant formula in polyamines and proteins could be responsible for some of the differences in health reported between breast-fed and formula-fed children, these changes must be taken into consideration because they may have a great effect on infant nutrition and development. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Evaluation of dried vegetables residues for poultry: II. Effects of feeding cabbage leaf residues on broiler performance, ileal digestibility and total tract nutrient digestibility.

PubMed

Mustafa, A F; Baurhoo, B

2017-03-01

A study was conducted to investigate the effects of partial replacing corn and soybean meal with dried cabbage leaf residues (DCR) on broiler growth performance, apparent ileal nutrient digestibility, and apparent total tract nutrient utilization. Dietary treatments include 4 levels of DCR (0, 3, 6, and 9%). Two hundred and twenty-four day-old male broilers were randomly assigned to one of 4 groups (8 cage replicates; 7 birds/cage) and grown over a 35-d experimental period. Results showed that feeding DCR had no effects on daily body weigh gain (average 53.4 g/d), daily feed intake (average 94.9 g/d), and feed conversion ratio (average 1.78 g of feed/g of gain). Inclusion of DCR reduced apparent ileal DM (quadratic effect, P < 0.001), OM (linear effect, P = 0.012), and CP (quadratic effect, P = 0.001) digestibility of younger birds (d 21) while incremental levels of DCR had no effect on apparent ileal nutrient digestibilities of older birds (d 35). Apparent total tract digestibility of DM, OM, and CP increased (linear effect, P < 0.001) as the level of DCR increased. It was concluded that the inclusion of DCR in broiler diets up to 9% had no negative impact on bird performance and apparent ileal digestibility of older birds and improved apparent total tract nutrient digestibility. © 2016 Poultry Science Association Inc.

SPS' Digest: the Swiss Proteomics Society selection of proteomics articles.

PubMed

Hoogland, Christine; Lion, Niels; Palagi, Patricia M; Sanchez, Jean-Charles; Tissot, Jean-Daniel

2005-08-01

Despite the consolidation of the specialized proteomics literature around a few established journals, such as Proteomics, Molecular and Cellular Proteomics, and the Journal of Proteome Research, a lot of information is still spread in many different publications from different fields, such as analytical sciences, MS, bioinformatics, etc. The purpose of SPS' Digest is to gather a selection of proteomics articles, to categorize them, and to make the list available on a periodic basis through a web page and email alerts.

Anaerobic Digestion

EPA Pesticide Factsheets

Inform visitors about the science of AD, the environmental and economic benefits that can be realized through AD projects, and direct visitors to appropriate regulatory information, feasibility tools and technical resources from related EPA programs.

Potential misinterpretation of the nutritional value of dietary fiber: correcting fiber digestibility values for nondietary gut-interfering material.

PubMed

Montoya, Carlos A; Henare, Sharon J; Rutherfurd, Shane M; Moughan, Paul J

2016-08-01

The aim of this review is to identify the origin and implications of a nondietary material present in digesta and feces that interferes with the determination of dietary fiber in gastrointestinal contents. Negative values for ileal and fecal digestibility of dietary fiber are commonly reported in the literature for monogastric animal species, including humans. As negative values are not possible physiologically, this suggests the existence of a nondietary material in the gastrointestinal contents and feces that interferes with the accurate determination of dietary fiber digestibility when conventional methods of fiber determination are applied. To date, little attention has been given to this nondietary interfering material, which appears to be influenced by the type and concentration of fiber in the diet. Interestingly, estimates of dietary fiber digestibility increase substantially when corrected for the nondietary interfering material, which suggests that currently reported values underestimate the digestibility of dietary fiber and may misrepresent where, in the digestive tract, fermentation of fiber occurs. A new perspective of dietary fiber digestion in the gastrointestinal tract is developing, leading to a better understanding of the contribution of dietary fiber to health. © The Author(s) 2016. Published by Oxford University Press on behalf of the International Life Sciences Institute. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

Dietary fiber and digestive health in children.

PubMed

Korczak, Renee; Kamil, Alison; Fleige, Lisa; Donovan, Sharon M; Slavin, Joanne L

2017-04-01

Digestive health is an expanding area in nutrition research due to the interest in how food components such as fiber affect gastrointestinal tolerance, stool form, defecation frequency, transit time, and gut microbial composition and metabolic activity. In children, however, digestive health studies that intervene with dietary fiber are limited due to legal and ethical concerns. To better understand if fiber improves digestive health in children, a literature review was conducted to answer the following research question: What are the effect(s) of fiber-containing foods and/or supplements on digestive health outcomes in children? A search of the PubMed database identified a total of 12 studies that fit the inclusion criteria established for this review. Most of the evidence in children shows beneficial effects of partially hydrolyzed guar gum, glucomannan, and bran on digestive health outcomes; however, the existing evidence is not conclusive. Furthermore, limited data exists on the effect of whole-grain sources of dietary fiber, such as oats. Additional well-designed intervention trials are needed to determine whether outcomes of digestive health such as stool form, gastrointestinal tolerance, and stool frequency are improved by increasing the fiber content of children's diets with whole-grain sources. © The Author(s) 2017. Published by Oxford University Press on behalf of the International Life Sciences Institute. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

ACHP | Case Digest - Protecting Historic Properties: Section 106 in Action

Science.gov Websites

Digest index. Previous issues: Summer 2012 (PDF) Spring 2012 (PDF) Winter 2012 (PDF) Fall 2011 (PDF ) Summer 2011 (PDF) Spring 2011 (PDF) Winter 2011 (PDF) Fall 2010 (PDF) Summer 2010 (PDF) Winter 2010 (PDF ) Fall 2009 (PDF) Summer 2009 (PDF) Spring 2009 (PDF) Winter 2009 (PDF) Fall 2008 (PDF) Summer 2008 (PDF

Genetic Underpinnings of Alopecia Areata

MedlinePlus Videos and Cool Tools

... has to offer you. Learn More Science and Health News Updated Estimates Suggest a Higher Number of ... a digest designed to inform community advocates and health professionals about resources for diverse audiences. Subscribe . Honoring ...

Biomedical Science, Unit II: Nutrition in Health and Medicine. Digestion of Foods; Organic Chemistry of Nutrients; Energy and Cell Respiration; The Optimal Diet; Foodborne Diseases; Food Technology; Dental Science and Nutrition. Student Text. Revised Version, 1975.

ERIC Educational Resources Information Center

Biomedical Interdisciplinary Curriculum Project, Berkeley, CA.

This student text presents instructional materials for a unit of science within the Biomedical Interdisciplinary Curriculum Project (BICP), a two-year interdisciplinary precollege curriculum aimed at preparing high school students for entry into college and vocational programs leading to a career in the health field. Lessons concentrate on…

Front-Row Seat at the IPY: The Field Notes Electronic Newsletter

NASA Astrophysics Data System (ADS)

Rithner, P. K.; Zager, S. D.; Garcia-Lavigne, D. N.

2007-12-01

As employees of Polar Field Services/VPR, the arctic logistics provider to the US National Science Foundation, we bear witness to the exploration, documentation, and celebration of the International Polar Year (IPY). Our front- row vantage point (logisticians working with field scientists) offers us a rare opportunity to report on developments at the frontiers of polar research and to describe how scientists work in the Arctic. Our reporting mechanism is field notes, a weekly (summer) to monthly (winter) electronic digest of information about the IPY research we support. Each issue showcases a short "cover" piece highlighting science projects or profiling arctic program participants. In addition, field notes offers news updates, short interviews, and blog-style dispatches contributed by researchers and support personnel. Wherever possible, we include URLs so readers may find more information via the Web: we link to an online database of projects we maintain for the NSF, to university Web sites, project blogs, and so on. We aim to inform the interested layperson about the myriad of activity in the IPY. We like to show that arctic science is interesting, relevant--and a great adventure. We've found field notes to be an excellent outreach venue. By no means a slick media outlet, field notes is published "on the side" by a small but dedicated group of employees who are endlessly fascinated by, and who enjoy an engaging perspective on, contemporary arctic research. Newsletter

The prognostic significance of UCA1 for predicting clinical outcome in patients with digestive system malignancies

PubMed Central

Zhu, Zheng-Ming

2017-01-01

Background Urothelial Carcinoma Associated 1 (UCA1) was an originally identified lncRNA in bladder cancer. Previous studies have reported that UCA1 played a significant role in various types of cancer. This study aimed to clarify the prognostic value of UCA1 in digestive system cancers. Results The meta-analysis of 15 studies were included, comprising 1441 patients with digestive system cancers. The pooled results of 14 studies indicated that high expression of UCA1 was significantly associated with poorer OS in patients with digestive system cancers (HR: 1.89, 95 % CI: 1.52–2.26). In addition, UCA1 could be as an independent prognostic factor for predicting OS of patients (HR: 1.85, 95 % CI: 1.45–2.25). The pooled results of 3 studies indicated a significant association between UCA1 and DFS in patients with digestive system cancers (HR = 2.50; 95 % CI = 1.30–3.69). Statistical significance was also observed in subgroup meta-analysis. Furthermore, the clinicopathological values of UCA1 were discussed in esophageal cancer, colorectal cancer and pancreatic cancer. Materials and methods A comprehensive retrieval was performed to search studies evaluating the prognostic value of UCA1 in digestive system cancers. Many databases were involved, including PubMed, Web of Science, Embase and Chinese National Knowledge Infrastructure and Wanfang database. Quantitative meta-analysis was performed with standard statistical methods and the prognostic significance of UCA1 in digestive system cancers was qualified. Conclusions Elevated level of UCA1 indicated the poor clinical outcome for patients with digestive system cancers. It may serve as a new biomarker related to prognosis in digestive system cancers. PMID:28380443

The prognostic significance of UCA1 for predicting clinical outcome in patients with digestive system malignancies.

PubMed

Liu, Fang-Teng; Dong, Qing; Gao, Hui; Zhu, Zheng-Ming

2017-06-20

Urothelial Carcinoma Associated 1 (UCA1) was an originally identified lncRNA in bladder cancer. Previous studies have reported that UCA1 played a significant role in various types of cancer. This study aimed to clarify the prognostic value of UCA1 in digestive system cancers. The meta-analysis of 15 studies were included, comprising 1441 patients with digestive system cancers. The pooled results of 14 studies indicated that high expression of UCA1 was significantly associated with poorer OS in patients with digestive system cancers (HR: 1.89, 95 % CI: 1.52-2.26). In addition, UCA1 could be as an independent prognostic factor for predicting OS of patients (HR: 1.85, 95 % CI: 1.45-2.25). The pooled results of 3 studies indicated a significant association between UCA1 and DFS in patients with digestive system cancers (HR = 2.50; 95 % CI = 1.30-3.69). Statistical significance was also observed in subgroup meta-analysis. Furthermore, the clinicopathological values of UCA1 were discussed in esophageal cancer, colorectal cancer and pancreatic cancer. A comprehensive retrieval was performed to search studies evaluating the prognostic value of UCA1 in digestive system cancers. Many databases were involved, including PubMed, Web of Science, Embase and Chinese National Knowledge Infrastructure and Wanfang database. Quantitative meta-analysis was performed with standard statistical methods and the prognostic significance of UCA1 in digestive system cancers was qualified. Elevated level of UCA1 indicated the poor clinical outcome for patients with digestive system cancers. It may serve as a new biomarker related to prognosis in digestive system cancers.

Validation of an approach to predict total-tract fiber digestibility using a standardized in vitro technique for different diets fed to high-producing dairy cows.

PubMed

Lopes, F; Ruh, K; Combs, D K

2015-04-01

The experimental objective was to validate an in vitro model to predict total-tract neutral detergent fiber (NDF) digestibility in dairy cattle. Twenty-one diets from 7 studies conducted at University of Wisconsin-Madison were analyzed for in vitro fiber digestibility. Forages varied among diets (corn, alfalfa, tall and meadow fescue, and wheat straw silages) and nutrient composition (ranges: NDF = 22.5 to 33.8%; crude protein = 15.8 to 18.9%; nonfiber carbohydrates = 38.0 to 51.0%). Total-tract NDF digestibility (TTNDFD) observed in in vivo trials was determined using different markers as described in the individual studies. The in vitro TTNDFD model predicted total-tract fiber digestibility from the proportion of total NDF potentially digestible (pdNDF), rate of pdNDF degradation, and rate of passage of pdNDF. The model predicted TTNDFD similar to in vivo measurements. The relationship between TTNDFD measured in vivo and TTNDFD predicted by the in vitro assay was significant (R(2) = 0.68). The relationship between in vitro 30-h NDF digestibility values and in vivo total-tract NDF digestibility values was not significant, whereas in vitro 48-h NDF digestibility values were correlated (R(2) = 0.30) with in vivo TTNDFD measurements. Indigestible NDF (iNDF) showed a negative relationship (R(2) = 0.40) with TTNDFD in vivo. Each 1-percentage-unit increase of iNDF resulted in a decrease of 0.96 percentage units of total-tract NDF digestibility; however, iNDF by itself was not a good predictor of TTNDFD because of the difference among the means. This study showed that an in vitro TTNDFD model that uses iNDF, pdNDF, and rates of pdNDF digestion and passage can predict (R(2) = 0.68) total-tract NDF digestibility. Most importantly, we demonstrated the ability to predict total-tract fiber digestibility from a model based on in vitro NDF degradation, which could improve our ability to optimize forage utilization and milk production. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

In vitro digestion of purified β-casein variants A(1), A(2), B, and I: effects on antioxidant and angiotensin-converting enzyme inhibitory capacity.

PubMed

Petrat-Melin, B; Andersen, P; Rasmussen, J T; Poulsen, N A; Larsen, L B; Young, J F

2015-01-01

Genetic polymorphisms of bovine milk proteins affect the protein profile of the milk and, hence, certain technological properties, such as casein (CN) number and cheese yield. However, reports show that such polymorphisms may also affect the health-related properties of milk. Therefore, to gain insight into their digestion pattern and bioactive potential, β-CN was purified from bovine milk originating from cows homozygous for the variants A(1), A(2), B, and I by a combination of cold storage, ultracentrifugation, and acid precipitation. The purity of the isolated β-CN was determined by HPLC, variants were verified by mass spectrometry, and molar extinction coefficients at λ=280nm were determined. β-Casein from each of the variants was subjected to in vitro digestion using pepsin and pancreatic enzymes. Antioxidant and angiotensin-converting enzyme (ACE) inhibitory capacities of the hydrolysates were assessed at 3 stages of digestion and related to that of the undigested samples. Neither molar extinction coefficients nor overall digestibility varied significantly between these 4 variants; however, clear differences in digestion pattern were indicated by gel electrophoresis. In particular, after 60min of pepsin followed by 5min of pancreatic enzyme digestion, one ≈4kDa peptide with the N-terminal sequence (106)H-K-E-M-P-F-P-K- was absent from β-CN variant B. This is likely a result of the (122)Ser to (122)Arg substitution in variant B introducing a novel trypsin cleavage site, leading to the changed digestion pattern. All investigated β-CN variants exhibited a significant increase in antioxidant capacity upon digestion, as measured by the Trolox-equivalent antioxidant capacity assay. After 60min of pepsin + 120min of pancreatic enzyme digestion, the accumulated increase in antioxidant capacity was ≈1.7-fold for the 4 β-CN variants. The ACE inhibitory capacity was also significantly increased by digestion, with the B variant reaching the highest inhibitory capacity at the end of digestion (60min of pepsin + 120min of pancreatic enzymes), possibly because of the observed alternative digestion pattern. These results demonstrate that genetic polymorphisms affect the digestion pattern and bioactivity of milk proteins. Moreover, their capacity for radical scavenging and ACE inhibition is affected by digestion. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Effect of heat and homogenization on in vitro digestion of milk.

PubMed

Tunick, Michael H; Ren, Daxi X; Van Hekken, Diane L; Bonnaillie, Laetitia; Paul, Moushumi; Kwoczak, Raymond; Tomasula, Peggy M

2016-06-01

Central to commercial fluid milk processing is the use of high temperature, short time (HTST) pasteurization to ensure the safety and quality of milk, and homogenization to prevent creaming of fat-containing milk. Ultra-high-temperature sterilization is also applied to milk and is typically used to extend the shelf life of refrigerated, specialty milk products or to provide shelf-stable milk. The structures of the milk proteins and lipids are affected by processing but little information is available on the effects of the individual processes or sequences of processes on digestibility. In this study, raw whole milk was subjected to homogenization, HTST pasteurization, and homogenization followed by HTST or UHT processing. Raw skim milk was subjected to the same heating regimens. In vitro gastrointestinal digestion using a fasting model was then used to detect the processing-induced changes in the proteins and lipids. Using sodium dodecyl sulfate-PAGE, gastric pepsin digestion of the milk samples showed rapid elimination of the casein and α-lactalbumin bands, persistence of the β-lactoglobulin bands, and appearance of casein and whey peptide bands. The bands for β-lactoglobulin were eliminated within the first 15min of intestinal pancreatin digestion. The remaining proteins and peptides of raw, HTST, and UHT skim samples were digested rapidly within the first 15min of intestinal digestion, but intestinal digestion of raw and HTST pasteurized whole milk showed some persistence of the peptides throughout digestion. The availability of more lipid droplets upon homogenization, with greater surface area available for interaction with the peptides, led to persistence of the smaller peptide bands and thus slower intestinal digestion when followed by HTST pasteurization but not by UHT processing, in which the denatured proteins may be more accessible to the digestive enzymes. Homogenization and heat processing also affected the ζ-potential and free fatty acid release during intestinal digestion. Stearic and oleic acids were broken down faster than other fatty acids due to their positions on the outside of the triglyceride molecule. Five different casein phosphopeptide sequences were observed after gastric digestion, and 31 sequences were found after intestinal digestion, with activities yet to be explored. Processing affects milk structure and thus digestion and is an important factor to consider in design of foods that affect health and nutrition. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Hot topic: apparent total-tract nutrient digestibilities measured commercially using 120-hour in vitro indigestible neutral detergent fiber as a marker are related to commercial dairy cattle performance.

PubMed

Schalla, A; Meyer, L; Meyer, Z; Onetti, S; Schultz, A; Goeser, J

2012-09-01

Measuring individual feed nutrient concentration is common practice for field dairy nutritionists. However, accurately measuring nutrient digestibility and using digestion values in total digestible nutrients models is more challenging. Our objective was to determine if in vivo apparent total-tract nutrient digestibility measured with a practical approach was related to commercial milk production parameters. Total mixed ration and fecal samples were collected from high-producing cows in pens on 39 commercial dairies and analyzed at a commercial feed and forage testing laboratory for nutrient concentration and 120-h indigestible NDF (iNDF) content using the Combs-Goeser in vitro digestion technique. The 120-h iNDF was used as an internal marker to calculate in vivo apparent nutrient digestibilities. Two samples were taken from each dairy and were separated in time by at least 3 wk. Samples were targeted to be taken within 7d of Dairy Herd Improvement (DHI) herd testing. Approved DHI testers measured individual cow milk weights as well as fat and protein concentrations. Individual cow records were averaged by pen corresponding to the total mixed ration and fecal samples. Formulated diet and dry matter intake (DMI) records for each respective pen were also collected. Mixed model regression analysis with dairy specified as a random effect was used to relate explanatory variables (diet nutrient concentrations, formulated DMI, in vivo apparent nutrient digestibilities, and fecal nutrient concentrations) to milk production measures. Dry matter intake, organic matter (OM) digestibility, fecal crude protein (CP) concentration, and fecal ether extract concentration were related to milk, energy-corrected milk, and fat yields. Milk protein concentration was related to CP digestibility, and milk protein yield was related to DMI, OM digestibility, CP digestibility, and ether extract digestibility. Although many studies have related DMI and OM digestibility to milk production under controlled experimental settings, very few have related practical in vivo measures to milk production. By documenting the practical OM digestibility relationship with milk production, nutritionists and scientists may have confidence in this approach for measuring diet performance and collecting nutritional data for commercial dairies. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Long Noncoding RNA H19 in Digestive System Cancers: A Meta-Analysis of Its Association with Pathological Features.

PubMed

Lin, Yang; Xu, Lijian; Wei, Wei; Zhang, Xiaohui; Ying, Rongchao

2016-01-01

Long noncoding RNA (lncRNA) H19 has been reported to be upregulated in malignant digestive tumors, but its clinical relevance is not yet established. The meta-analysis was to investigate the association between H19 expression and pathological features of digestive system cancers. The databases of PubMed, EMBase, Web of Science, CNKI, and WanFang were searched for the related studies. A total of 478 patients from 6 studies were finally included. The meta-analysis showed that the patient group of high H19 expression had a higher risk of poorly differentiated grade, deep tumor invasion (T2 stage or more), lymph node metastasis, and advanced TNM stage than the group of low H19 expression, although there was no difference between them in terms of distant metastasis. Therefore, the high expression of lncRNA H19 might predict poor oncological outcomes of patients with digestive system cancers.

Deploying anaerobic digesters: Current status and future possibilities

DOE Office of Scientific and Technical Information (OSTI.GOV)

Lusk, P.; Wheeler, P.; Rivard, C.

1996-01-01

Unmanaged pollutants from putrescible farm, industrial, and municipal wastes degrade in the environment, and methane emitted from their decomposition may contribute to global climate change. Under modern environmental regulations, these wastes are becoming difficult to dispose of using traditional means. One waste management system, anaerobic digestion or AD, not only provides pollution prevention but can also convert a disposal problem into a new profit center. This report is drawn from a special session of the Second Biomass Conference of the Americas. Selected papers are indexed separately for inclusion in the Energy Science and Technology Database.

Validation of an in vitro model for predicting rumen and total-tract fiber digestibility in dairy cows fed corn silages with different in vitro neutral detergent fiber digestibilities at 2 levels of dry matter intake.

PubMed

Lopes, F; Cook, D E; Combs, D K

2015-01-01

An in vivo study was performed to validate an in vitro procedure that predicts rate of fiber digestion and total-tract neutral detergent fiber digestibility (TTNDFD). Two corn silages that differed in fiber digestibility were used in this trial. The corn silage with lower fiber digestibility (LFDCS) had the TTNDFD prediction of 36.0% of total NDF, whereas TTNDFD for the corn silage with higher fiber digestibility (HFDCS) was 44.9% of total neutral detergent fiber (NDF). Two diets (1 with LFDCS and 1 with HFDCS) were formulated and analyzed using the in vitro assay to predict the TTNDFD and rumen potentially digestible NDF (pdNDF) digestion rate. Similar diets were fed to 8 ruminally cannulated, multiparous, high-producing dairy cows in 2 replicated 4×4 Latin squares with 21-d periods. A 2×2 factorial arrangement of treatments was used with main effects of intake (restricted to approximately 90% of ad libitum intake vs. ad libitum) and corn silage of different fiber digestibility. Treatments were restricted and ad libitum LFDCS as well as restricted and ad libitum HFDCS. The input and output values predicted from the in vitro model were compared with in vivo measurements. The pdNDF intake predicted by the in vitro model was similar to pdNDF intake observed in vivo. Also, the pdNDF digestion rate predicted in vitro was similar to what was observed in vivo. The in vitro method predicted TTNDFD of 50.2% for HFDCS and 42.9% for LFDCS as a percentage of total NDF in the diets, whereas the in vivo measurements of TTNDFD averaged 50.3 and 48.6% of total NDF for the HFDCS and LFDCS diets, respectively. The in vitro TTNDFD assay predicted total-tract NDF digestibility of HFDCS diets similar to the digestibility observed in vivo, but for LFDCS diets the assay underestimated the digestibility compared with in vivo. When the in vitro and in vivo measurements were compared without intake effect (ad libitum and restricted) considering only diet effect of silage fiber digestibility (HFDCS and LFDCS), no differences were observed between methods. These values suggest that our in vitro TTNDFD model could be used to predicted rate of fiber digestion and NDF digestibility for dairy cattle. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Science Notes.

ERIC Educational Resources Information Center

School Science Review, 1989

1989-01-01

Contains articles on digestive enzymes in grasshoppers; bird and badger observation; reactions between hydrochloric acid and sodium carbonate solutions; observing the migration of ions; pupil's heating skills (Bunsen burners); photolysis experimentation; capillary kinetics; experience with trireme; connection circuits; special relativity; a…

Technical note: In vitro digestibility of amylase-treated, ash-corrected neutral detergent fiber, with addition of sodium sulfite, at 240 hours with or without rumen fluid reinoculation.

PubMed

Palmonari, A; Canestrari, G; Bonfante, E; Fustini, M; Mammi, L; Formigoni, A

2017-02-01

Long-term in vitro fermentation (240 h) evaluating amylase-treated, ash-corrected neutral detergent fiber, with addition of sodium sulfite (aNDFom) digestibility is required to quantify the indigestible fiber fraction. It is commonly accepted to inoculate rumen fluid more than one time during such fermentations, every 96 h or at 120 h. However, no studies have been conducted to verify if the reinoculation is actually required to properly carry out the fermentation process. The current study aims to evaluate the effects of these procedures on aNDFom digestibility at 240 h. The study was conducted on a total of 24 forage samples (8 alfalfa hays, 8 grass hays, and 8 corn silages). Samples were digested in triplicate at 240 h in vitro. Rumen fluid was added twice (at 96 and 192 h) in treatment 1, after 120 h in treatment 2, whereas no addition was made in treatment 3. At the end of the fermentations, residual aNDFom was quantified to calculate digestibility. Among treatments, no difference was found in digestibility of aNDFom. Moreover, treatment 1 resulted in higher variability compared with other treatments. Results obtained in the current study show that subsequent addition of rumen fluid is not necessary for a proper estimation of aNDFom digestibility, and can be avoided. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Pathophysiology of cystic fibrosis and drugs used in associated digestive tract diseases

PubMed Central

Haack, Adriana; Aragão, Giselle Gonçalves; Novaes, Maria Rita Carvalho Garbi

2013-01-01

Cystic fibrosis (CF) causes chronic infections in the respiratory tract and alters the digestive tract. This paper reviews the most important aspects of drug treatment and changes in the digestive tract of patients with CF. This is a review of the literature, emphasizing the discoveries made within the last 15 years by analyzing scientific papers published in journals indexed in the Scientific Electronic Library Online, Sciences Information, United States National Library of Medicine and Medical Literature Analysis and Retrieval System Online databases, both in English and Portuguese, using the key words: cystic fibrosis, medication, therapeutic, absorption, digestion. Randomized, observational, experimental, and epidemiological clinical studies were selected, among others, with statistical significance of 5%. This review evaluates the changes found in the digestive tract of CF patients including pancreatic insufficiency, constipation and liver diseases. Changes in nutritional status are also described. Clinical treatment, nutritional supplementation and drug management were classified in this review as essential to the quality of life of CF patients, and became available through public policies for monitoring and treating CF. The information gathered on CF and a multi professional approach to the disease is essential in the treatment of these patients. PMID:24379572

Co-digestion of solid waste: Towards a simple model to predict methane production.

PubMed

Kouas, Mokhles; Torrijos, Michel; Schmitz, Sabine; Sousbie, Philippe; Sayadi, Sami; Harmand, Jérôme

2018-04-01

Modeling methane production is a key issue for solid waste co-digestion. Here, the effect of a step-wise increase in the organic loading rate (OLR) on reactor performance was investigated, and four new models were evaluated to predict methane yields using data acquired in batch mode. Four co-digestion experiments of mixtures of 2 solid substrates were conducted in semi-continuous mode. Experimental methane yields were always higher than the BMP values of mixtures calculated from the BMP of each substrate, highlighting the importance of endogenous production (methane produced from auto-degradation of microbial community and generated solids). The experimental methane productions under increasing OLRs corresponded well to the modeled data using the model with constant endogenous production and kinetics identified at 80% from total batch time. This model provides a simple and useful tool for technical design consultancies and plant operators to optimize the co-digestion and the choice of the OLRs. Copyright © 2018 Elsevier Ltd. All rights reserved.

The important role of salivary α-amylase in the gastric digestion of wheat bread starch.

PubMed

Freitas, Daniela; Le Feunteun, Steven; Panouillé, Maud; Souchon, Isabelle

2018-01-24

The role of salivary α-amylase (HSA) in starch digestion is often overlooked in favour of that of pancreatic α-amylase due to the short duration of the oral phase. Although it is generally accepted that the amylase of salivary origin can continue to be active in the stomach, studies ascertaining its contribution are lacking. This study aimed to address this issue by coupling in vitro oral processing with an in vitro dynamic system that mimicked different postprandial gastric pH reduction kinetics observed in vivo following a snack- or lunch-type meal. The digestion of both starch and protein from wheat bread as well as the interplay between the two processes were studied. We have observed that the amylolytic activity of saliva plays a preponderant role hydrolysing up to 80% of bread starch in the first 30 min of gastric digestion. Amylolysis evolved exponentially and nearly superimposing curves were obtained regardless of the acidification profiles, revealing its high efficiency.

Anaerobic digestion of stillage fractions - estimation of the potential for energy recovery in bioethanol plants.

PubMed

Drosg, B; Fuchs, W; Meixner, K; Waltenberger, R; Kirchmayr, R; Braun, R; Bochmann, G

2013-01-01

Stillage processing can require more than one third of the thermal energy demand of a dry-grind bioethanol production plant. Therefore, for every stillage fraction occurring in stillage processing the potential of energy recovery by anaerobic digestion (AD) was estimated. In the case of whole stillage up to 128% of the thermal energy demand in the process can be provided, so even an energetically self-sufficient bioethanol production process is possible. For wet cake the recovery potential of thermal energy is 57%, for thin stillage 41%, for syrup 40% and for the evaporation condensate 2.5%. Specific issues for establishing AD of stillage fractions are evaluated in detail; these are high nitrogen concentrations, digestate treatment and trace element supply. If animal feed is co-produced at the bioethanol plant and digestate fractions are to be reused as process water, a sufficient quality is necessary. Most interesting stillage fractions as substrates for AD are whole stillage, thin stillage and the evaporation condensate. For these fractions process details are presented.

Studies in Teaching: 2002 Research Digest. Research Projects Presented at Annual Research Forum (Winston-Salem, North Carolina, December 2002)

ERIC Educational Resources Information Center

McCoy, Leah P., Ed.

2002-01-01

This document presents the of an annual educational research forum held at Wake Forest University (Winston-Salem, North Carolina) on December 11, 2002. A table of contents and 27 research studies of high school teaching are included. Studies include: Effects of the Earth/Environmental Science Requirement on High School Science Enrollment in North…

Measured Approach or Magical Elixir? How to Tell Good Science from Bad

ERIC Educational Resources Information Center

Willingham, Daniel T.

2012-01-01

Distinguishing between good and bad science is not easy. Evaluating whether or not a claim really is supported by good research is like buying a car. There is an optimal solution to the problem, which is to read and digest all of the relevant research, but most people do not have time to execute the optimal solution. What they need is a good…

Effects of canola meal pellet conditioning temperature and time on ruminal and intestinal digestion, hourly effective degradation ratio, and potential nitrogen to energy synchronization in dairy cows.

PubMed

Huang, Xuewei; Khan, Nazir A; Zhang, Xuewei; Yu, Peiqiang

2015-12-01

The increase in bio-oil production in North America has resulted in millions of tonnes of co-products: canola meal and carinata meal. Little research has been conducted to determine the effect of pellet conditioning temperature, time, and their interaction on processing-induced changes in nutrient digestibility in the rumen and intestine (in vitro) of dairy cattle. The objectives of this study were to investigate the effects of conditioning temperature (70, 80, and 90°C), time (50 and 75 s), and their interaction (temperature × time) during the pelleting of canola meal on (1) rumen degradation kinetics and effective rumen degradability of dry matter, crude protein (CP), and neutral detergent fiber; (2) intestinal digestibility of rumen-undegradable protein (RUP); and (3) hourly effective rumen degradation ratio and potential N to energy synchronization in dairy cattle. The results showed that the temperature and duration of pellet conditioning significantly altered the degradation characteristics of nutrients in the rumen. Pelleting increased CP degradation in the rumen, and CP digestion site was shifted to the rumen rather than to the small intestine. When conditioning temperature was set 80°C, the rumen degradation of CP and neutral detergent fiber was highest, but postrumen digestion was lowest. With respect to intestinal digestion, the available CP for intestinal digestion became less because of reduced RUP supply to the small intestine. The pelleting process tended to significantly affect the intestinal digestibility of RUP. However, the total digestible CP content of canola meal was not affected. In conclusion, pelleting induced changes in rumen and intestinal digestion profiles, and altered the potential N to energy synchronization and hourly effective rumen degradation ratio of canola meal in dairy cattle. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Digestive tract neural control and gastrointestinal disorders in cerebral palsy.

PubMed

Araújo, Liubiana A; Silva, Luciana R; Mendes, Fabiana A A

2012-01-01

To examine the neural control of digestive tract and describe the main gastrointestinal disorders in cerebral palsy (CP), with attention to the importance of early diagnosis to an efficient interdisciplinary treatment. Systematic review of literature from 1997 to 2012 from Medline, Lilacs, Scielo, and Cochrane Library databases. The study included 70 papers, such as relevant reviews, observational studies, controlled trials, and prevalence studies. Qualitative studies were excluded. The keywords used were: cerebral palsy, dysphagia, gastroesophageal reflux disease, constipation, recurrent respiratory infections, and gastrostomy. The appropriate control of the digestive system depends on the healthy functioning and integrity of the neural system. Since CP patients have structural abnormalities of the central and peripheral nervous system, they are more likely to develop eating disorders. These range from neurological immaturity to interference in the mood and capacity of caregivers. The disease has, therefore, a multifactorial etiology. The most prevalent digestive tract disorders are dysphagia, gastroesophageal reflux disease, and constipation, with consequent recurrent respiratory infections and deleterious impact on nutritional status. Patients with CP can have neurological abnormalities of digestive system control; therefore, digestive problems are common. The issues raised in the present study are essential for professionals within the interdisciplinary teams that treat patients with CP, concerning the importance of comprehensive anamnesis and clinical examination, such as detailed investigation of gastrointestinal disorders. Early detection of these digestive problems may lead to more efficient rehabilitation measures in order to improve patients' quality of life.

Effect of partitioning the nonfiber carbohydrate fraction and neutral detergent fiber method on digestibility of carbohydrates by dairy cows.

PubMed

Tebbe, A W; Faulkner, M J; Weiss, W P

2017-08-01

Many nutrition models rely on summative equations to estimate feed and diet energy concentrations. These models partition feed into nutrient fractions and multiply the fractions by their estimated true digestibility, and the digestible mass provided by each fraction is then summed and converted to an energy value. Nonfiber carbohydrate (NFC) is used in many models. Although it behaves as a nutritionally uniform fraction, it is a heterogeneous mixture of components. To reduce the heterogeneity, we partitioned NFC into starch and residual organic matter (ROM), which is calculated as 100 - CP - LCFA - ash - starch - NDF, where crude protein (CP), long-chain fatty acids (LCFA), ash, starch, and neutral detergent fiber (NDF) are a percentage of DM. However, the true digestibility of ROM is unknown, and because NDF is contaminated with both ash and CP, those components are subtracted twice. The effect of ash and CP contamination of NDF on in vivo digestibility of NDF and ROM was evaluated using data from 2 total-collection digestibility experiments using lactating dairy cows. Digestibility of NDF was greater when it was corrected for ash and CP than without correction. Conversely, ROM apparent digestibility decreased when NDF was corrected for contamination. Although correcting for contamination statistically increased NDF digestibility, the effect was small; the average increase was 3.4%. The decrease in ROM digestibility was 7.4%. True digestibility of ROM is needed to incorporate ROM into summative equations. Data from multiple digestibility experiments (38 diets) using dairy cows were collated, and ROM concentrations were regressed on concentration of digestible ROM (ROM was calculated without adjusting for ash and CP contamination). The estimated true digestibility coefficient of ROM was 0.96 (SE = 0.021), and metabolic fecal ROM was 3.43 g/100 g of dry matter intake (SE = 0.30). Using a smaller data set (7 diets), estimated true digestibility of ROM when calculated using NDF corrected for ash and CP contamination was 0.87 (SE = 0.025), and metabolic fecal ROM was 3.76 g/100 g (SE = 0.60). Regardless of NDF method, ROM exhibited nutritional uniformity. The ROM fraction also had lower errors associated with the estimated true digestibility and its metabolic fecal fraction than did NFC. Therefore, ROM may result in more accurate estimates of available energy if integrated into models. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Acute decompensated heart failure: new strategies for improving outcomes [digest].

PubMed

Singer Fisher, Emily; Burns, Boyd; Kim, Jeremy

2017-05-22

Acute decompensated heart failure is a common emergency department presentation with significant associated morbidity and mortality. Heart failure accounts for more than 1 million hospitalizations annually, with a steadily increasing incidence as our population ages. This issue reviews recent literature regarding appropriate management of emergency department presentations of acute decompensated heart failure, with special attention to newer medication options. Emergency department management and appropriate interventions are discussed, along with critical decision-making points in resuscitation for both hypertensive and hypotensive patients. [Points & Pearls is a digest of Emergency Medicine Practice].

Best practices in managing child and adolescent behavioral health emergencies [digest].

PubMed

Feuer, Vera; Rocker, Joshua; Saggu, Babar M; Andrus, Jason M; Wormley, Molly

2018-01-22

Behavioral health emergencies most commonly present as depression, suicidal behavior, aggression, and severe disorganization. Emergency clinicians should avoid relying solely on past medical history or previous psychiatric diagnoses that might prematurely rule out medical pathologies. Treatments for behavioral health emergencies consist of de-escalation interventions aimed at preventing agitation, aggression, and harm. This issue reviews medical pathologies and underlying causes that can result in psychiatric presentations and summarizes evidence-based practices to evaluate, manage, and refer patients with behavioral health emergencies. [Points & Pearls is a digest of Pediatric Emergency Medicine Practice].

Pancreatic enzyme deficiency depends on dietary protein origin in milk-fed calves.

PubMed

Guilloteau, P; Plodari, M; Romé, V; Savary, G; Le Normand, L; Zabielski, R

2011-03-01

In young mammals, milk proteins and their substitutes are used in milk formula. Protein substitution modifies diet digestibility and pancreatic secretions. The aim of this study was to test if milk protein substitution could generate pancreatic deficiency in milk-fed calves. The effect of pancreatic juice on the digestibility of proteins was studied. Measurement of apparent fecal nutrient digestibility was used to estimate digestion. Ten calves (60 to 130 d old) were chronically fitted with pancreatic accessory duct cannulas and 2 duodenal cannulas to provide precise measurement, sampling, and reintroduction of pancreatic juice as well as additional infusions. Animals were fed milk formula based on skim milk powder or soybean concentrate. Level of deficiency depended on dietary protein origin. Twice as much protein or trypsin was required with a soybean concentrate diet than with a skim milk powder diet to obtain maximal nutrient digestibility. Pancreatic protein concentration in the juice can be used to differentiate between normal and deficient animals. Among these proteins, trypsin measurement is a good pancreatic deficiency marker. These results confirmed the major role of exocrine pancreatic secretions in producing optimal digestion in young calves. Furthermore, practical applications of these results can be applied for the young in other animal species and in humans. Copyright © 2011 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Effect of replacing alfalfa hay with a mixture of cassava foliage silage and sweet potato vine silage on ruminal and intestinal digestion in sheep.

PubMed

Dang, Hoang Lam; Lv, Renlong; Obitsu, Taketo; Sugino, Toshihisa

2018-02-01

This study aimed to investigate the effects of replacing alfalfa hay (AH) with a mixture of cassava foliage silage and sweet potato vine silage (CSP) (1:1 on a dry matter (DM) basis) on ruminal and intestinal nutrient digestion in sheep. Four wethers were fed a control diet containing 35% of AH and two treatment diets containing 15% and 30% of the CSP as substitute for AH at 1.5 times the metabolizable energy required for maintenance. Replacing AH with the CSP silage did not affect DM intake, whereas it linearly increased (P < 0.05) the intake of ether extract and acid detergent insoluble nitrogen (ADIN). Increasing the CSP substitution linearly decreased (P < 0.05) ruminal DM and neutral detergent fiber (aNDFom) digestibility; however, it did not affect total tract aNDFom digestibility. The CSP substitution did not affect nitrogen (N) intake and duodenal total N flow, whereas it linearly increased duodenal ADIN flow (P < 0.01) and decreased ruminal ammonia-N concentration (P < 0.01), and intestinal (P = 0.08) and total N digestibility (P < 0.01). These results indicate that replacing AH with the CSP reduced the ruminal N degradation as well as the digestion of ruminal aNDFom and intestinal N. © 2017 Japanese Society of Animal Science.

Science Around the Corner.

ERIC Educational Resources Information Center

Lunetta, Vincent N.; And Others

1984-01-01

Advocates including environmental issues balanced with basic science concepts/processes to provide a sound science foundation. Suggests case studies of regional environmental issues to sensitize/motivate students while reflecting complex nature of science/society issues. Issues considered include: fresh water quality, earthquake predication,…

DOE Office of Scientific and Technical Information (OSTI.GOV)

Klabunde, Kenneth J.

Overall Research Goals and Specific Objectives: Nanoscale materials are becoming ubiquitous in science and engineering, and are found widely in nature. However, their formation processes and uniquely high chemical reactivities are not understood well, indeed are often mysterious. Over recent years, a number of research teams have described nanoparticle synthesis, and aging, thermal treatment, or etching times have been mentioned. We have used the terms “digestive ripening” and “nanomachining” and have suggested that thermodynamics plays an important part in the size adjustment to monodisperse arrays being formed. Since there is scant theoretical understanding of digestive ripening, the overall goal inmore » our research is to learn what experimental parameters (ligand used, temperature, solvent, time) are most important, how to control nanoparticle size and shape after initial crude nanoparticles have been synthesized, and gain better understanding of the chemical mechanism details. Specific objectives for the past twentynine months since the grant began have been to (1) Secure and train personnel;as of 2011, a postdoc Deepa Jose, female from the Indian Institute of Science in Bangalore, India; Yijun Sun, a second year graduate student, female from China; and Jessica Changstrom, female from the USA, GK12 fellow (program for enhancing teaching ability) are actively carrying out research. (2) Find out what happens to sulfur bound hydrogen of thiol when it interacts with gold nanoparticles. Our findings are discussed in detail later. (3) Determine the effect of particle size, shape, and temperature on dodecyl thiol assited digestive ripening of gold nanoparticles. See our discussions later. (4) To understand in detail the ligand interaction in molecular clusters and nanoparticles (5) Determine the effect of chain length of amines on Au nanoparticle size under digestive ripening conditions (carbon chain length varied from 4-18). (6) Determine the catalytic activity of gold superlattices obtained by digestive ripening for oxidation of CO to CO2 at room temperature. (7) Determine the photocatalytic activity of metal nanoparticles like Au, Ag,Cu, and Pd supported on TiO2 toward photocatalytic hydrogen production.« less

Holographically Encoded Volume Phase Masks

DTIC Science & Technology

2015-07-13

Lu et al., “Coherent beam combination of fiber laser arrays via multiplexed volume Bragg gratings,” in Conf. on Lasers and Electro- Optics: Science...combining of fiber lasers using multiplexed volume Bragg gratings,” in Conf. on Lasers and Electro- Optics: Science and Innovations, OSA Technical Digest...satisfying the Bragg condition of the hologram. Moreover, this approach enables the capability to encode and multiplex several phase masks into a single

Variability in amino acid digestibility and metabolizable energy of corn studied in cecectomized laying hens1.

PubMed

Zuber, T; Rodehutscord, M

2017-06-01

To optimize the use of corn grain in diets for laying hens, differences in amino acid (AA) digestibility and metabolizable energy among different corn samples should be considered in feed formulation. The present study investigated the variability of AA digestibility and AMEn concentration of 20 corn samples in cecectomized laying hens. Corn grains were characterized based on their physical properties (thousand seed weight, test weight, grain density, and extract viscoelasticity), chemical composition (proximate nutrients, AA, minerals, and inositol phosphates), gross energy concentration, and in vitro solubility of nitrogen to study any relationship with AA digestibility or AMEn. The animal study comprised 4 Latin squares (6 × 6) distributed between 2 subsequent runs. Cecectomized LSL-Classic hens were individually housed in metabolism cages and fed either a basal diet containing 500 g/kg cornstarch or one of 20 corn diets, each replacing the cornstarch with one corn batch, for 8 days. During the last 4 d, feed intake was recorded and excreta were collected quantitatively. A linear regression approach was used to calculate AA digestibility of the corn. The digestibility of all AA differed significantly between the 20 corn batches, including Lys (digestibility range 64 to 85%), Met (86 to 94%), Thr (72 to 89%), and Trp (21 to 88%). The AMEn of the corn batches ranged between 15.7 and 17.1 MJ/kg DM. However, consistent correlations between AA digestibility or AMEn and the physical and chemical characteristics of the grains were not detected. Equations to predict AA digestibility or AMEn based on the grain's physical and chemical characteristics were calculated by multiple linear regressions. The explanatory power (adjusted R2;) of prediction equations was below 0.6 for the majority of AA and AMEn, and, thus, was not sufficiently precise for practical use. Possible explanations for the variation in AA digestibility and AMEn beyond the determined characteristics are discussed. In conclusion, AA digestibility and AMEn of corn grain is high in laying hens, but varies among different corn samples, with physical and chemical characteristics not suitable for explaining these variations. © 2016 Poultry Science Association Inc.

A Meta-Analysis of the Diagnostic Accuracy of Circular RNAs in Digestive System Malignancy.

PubMed

Chen, Zhiqiang; Zhang, Long; Han, Guoyong; Zuo, Xueliang; Zhang, Yao; Zhu, Qin; Wu, Jindao; Wang, Xuehao

2018-01-01

Circular RNAs (circRNAs), a novel class of noncoding RNAs, have been found to be dysregulated in various cancers. However, the clinical application value of these circRNAs in digestive system cancers remains to be clarified. We aimed to comprehensively explore the potential role of circRNAs as diagnostic indicators in digestive system malignancies. Relevant studies were systematically retrieved from PubMed, Web of Science and the Cochrane Library. The data that were required to complete 2 × 2 contingency tables were obtained from the included studies. Stratified analyses by cancer type, sample size and publication year were performed. Thirteen studies with 2,276 individuals were included in the meta-analysis. The pooled sensitivity and specificity of circRNAs in the diagnosis of digestive system malignancy were 0.72 [95% confidence interval (CI): 0.65-0.77] and 0.77 (95% CI: 0.72-0.81), respectively. The overall positive likelihood ratio was 3.09 (95% CI: 2.64-3.62), and the overall negative likelihood ratio was 0.37 (95% CI: 0.31-0.44). The pooled diagnostic odds ratio was 8.38 (95% CI: 6.86-10.25), and the overall area under the curve was 0.81 (95% CI: 0.77-0.84), indicating good discriminative ability of circRNAs as biomarkers for digestive system malignancy. circRNAs distinguish patients with digestive system cancer from controls with relatively high diagnostic accuracy. circRNAs may be used as potential biomarkers for the diagnosis of digestive system malignancy. © 2018 The Author(s). Published by S. Karger AG, Basel.

Organization of the 1991 Society of America Photonic Science Topical Meeting Held in Monterey, California on September 26 - 28, 1991. 1991 Technical Digest Series, Volume 16, Conference Edition

DTIC Science & Technology

1992-05-01

Yuxin Ni, Duoyuan Wang, Lingzhi Hu, Huizhu He, Jie Xie. 532 nm. (p. 122) Junyi Zhing, Academy of Sciences of China. Photon-gated persistent spectral hole...cal hole-burning, Duoyuan Wang, Lingzhi Hu, Huizhu He, Lizeng Zhao, Xin Mi, Yuxin Ni, Academy of Sciences, China. FES Marker mode structure in the...Dongxiang, Mi Xin, Nie Yuxin Institute of Physics, Academia Sinica Beijing 100080, China, Fax:(86-1)2562605 Wang Duoyuan, Hu Lingzhi , He Huizhu, Xie

Teaching Ethical Issues in Science.

ERIC Educational Resources Information Center

Levinson, Ralph

This paper presents a study that investigates the teaching and learning aspects of controversial issues in science education. Teaching ethical issues is mandatory for science teachers in England; however, teachers may experience difficulties in exploring contemporary issues in science due to rapid and unpredictable changes. The study carries an…

Measurement of true ileal phosphorus digestibility in meat and bone meal for broiler chickens.

PubMed

Mutucumarana, R K; Ravindran, V; Ravindran, G; Cowieson, A J

2015-07-01

An experiment was conducted to estimate true ileal phosphorus (P:) digestibility of 3 meat and bone meal samples (MBM-1, MBM-2: , and MBM-3:) for broiler chickens. Four semipurified diets were formulated from each sample to contain graded concentrations of P. The experiment was conducted as a completely randomized design with 6 replicates (6 birds per replicate) per dietary treatment. A total of 432 Ross 308 broilers were assigned at 21 d of age to the 12 test diets. The apparent ileal digestibility coefficient of P was determined by the indicator method, and the linear regression method was used to determine the true P digestibility coefficient. The apparent ileal digestibility coefficient of P in birds fed diets containing MBM-1 and MBM-2 was unaffected by increasing dietary concentrations of P (P > 0.05). The apparent ileal digestibility coefficient of P in birds fed the MBM-3 diets decreased with increasing P concentrations (linear, P < 0.001; quadratic, P < 0. 01). In birds fed the MBM-1 and MBM-2 diets, ileal endogenous P losses were estimated to be 0.049 and 0.142 g/kg DM intake (DMI:), respectively. In birds fed the MBM-3 diets, endogenous P loss was estimated to be negative (-0.370 g/kg DMI). True ileal P digestibility of MBM-1, MBM-2, and MBM-3 was determined to be 0.693, 0.608, and 0.420, respectively. True ileal P digestibility coefficients determined for MBM-1 and MBM-2 were similar (P < 0.05), but were higher (P < 0.05) than that for MBM-3. Total P and true digestible P contents of MBM-1, MBM-2, and MBM-3 were determined to be 37.5 and 26.0; 60.2 and 36.6; and 59.8 and 25.1 g/kg, respectively, on an as-fed basis. © 2015 Poultry Science Association Inc.

Vegetation ecology meets ecosystem science: Permanent grasslands as a functional biogeography case study.

PubMed

Violle, Cyrille; Choler, Philippe; Borgy, Benjamin; Garnier, Eric; Amiaud, Bernard; Debarros, Guilhem; Diquelou, Sylvain; Gachet, Sophie; Jolivet, Claudy; Kattge, Jens; Lavorel, Sandra; Lemauviel-Lavenant, Servane; Loranger, Jessy; Mikolajczak, Alexis; Munoz, François; Olivier, Jean; Viovy, Nicolas

2015-11-15

The effect of biodiversity on ecosystem functioning has been widely acknowledged, and the importance of the functional roles of species, as well as their diversity, in the control of ecosystem processes has been emphasised recently. However, bridging biodiversity and ecosystem science to address issues at a biogeographic scale is still in its infancy. Bridging this gap is the primary goal of the emerging field of functional biogeography. While the rise of Big Data has catalysed functional biogeography studies in recent years, comprehensive evidence remains scarce. Here, we present the rationale and the first results of a country-wide initiative focused on the C3 permanent grasslands. We aimed to collate, integrate and process large databases of vegetation relevés, plant traits and environmental layers to provide a country-wide assessment of ecosystem properties and services which can be used to improve regional models of climate and land use changes. We outline the theoretical background, data availability, and ecoinformatics challenges associated with the approach and its feasibility. We provide a case study of upscaling of leaf dry matter content averaged at ecosystem level and country-wide predictions of forage digestibility. Our framework sets milestones for further hypothesis testing in functional biogeography and earth system modelling. Copyright © 2015 Elsevier B.V. All rights reserved.

Children and genetically engineered food: potentials and problems.

PubMed

Perr, Hilary A

2002-10-01

Changes in food production and dietary practices are occurring faster than our understanding of their potential impact on children's health. Traditionally, pediatric gastroenterologists have studied food with respect to its nutritive value and digestibility, its influence on metabolism, its growth-promoting characteristics, and its relationship to risk and severity of disease. Biotechnology is now expanding the science of food to include disease prevention and treatment, as well as the feeding of children on a global scale. Bioengineered ("genetically modified", or "transgenic") plants were initially developed to enhance the food supply by increasing crop yields. Such previously developed transgenic plants are now prevalent worldwide and appear in many processed food products. The implementation of the technology of genetic modulation of food plants has led to considerable fear, controversy, and confusion as the understanding of the technology is poor in the general population. This review presents an overview of genetically modified food crops and their potential unique benefits and risks to children's health. Political, economical, and ecological issues related to transgenic crops are not discussed.

ALTERNATIVES FOR CLASS A BIOSOLIDS

EPA Science Inventory

The presentation reviews the pathogenic microorganisms that may be found in sewage sludge and commonly employed Class A processes for controlling them including advanced digestion, alkaline treatment and heat drying. How extensively the processes are used as well as issues and co...

Determination of gold and silver in geological samples by focused infrared digestion: A re-investigation of aqua regia digestion.

PubMed

Wang, Yong; Baker, Laura A; Brindle, Ian D

2016-02-01

Focused infrared radiation-based digestions, for the determination of gold and silver, can be achieved in a timeframe as short as 10-15 min, making it an attractive candidate technology for the mining industry, where very large numbers of samples are analyzed on a daily basis. An investigation was carried out into gold and silver dissolution chemistry from geological samples using this novel digestion technique. This study investigated in-depth the issue of low recoveries of gold from aqua regia (AR) digestions, reported by a number of researchers. Conventional AR digestions consistently delivered gold recoveries in a range of 69-80% of the certified values for the four certified reference materials (CRM) employed (CCU-1d, SN26, OREAS 62c, and AMiS 0274), while silver recoveries were satisfactory. By gradually shifting the HCl:HNO3 ratio (v/v) from 3:1 to a reversed 1:3 ratio, recoveries of gold and silver exhibited inverse trends. At a HCl:HNO3 ratio of 1:3, complete recovery of gold was achieved with excellent reproducibility in all CRMs. Meanwhile, silver recoveries plunged significantly at this ratio in samples with higher silver concentrations. Silver values were recovered, however, when the silver was re-solubilized by adding a small volume of concentrated HCl to the cooled reverse aqua regia digests. Recoveries of base metals, such as Fe and Cu, were satisfactory throughout and were much less sensitive to changes in the digestion medium. Using four CRMs and five real-world gold/silver containing samples, the utility of the proposed reverse aqua regia was systematically studied. The uncomplicated nature of the digestion methods reported here, that are fast, effective and inexpensive, may be useful to analysts developing/optimizing their methods for the rapid determination of Au and Ag in a variety of mineral phases, particularly where rapid results are desirable, such as in prospecting and mine development. Copyright © 2015 Elsevier B.V. All rights reserved.

Final Technical Report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Shayya, Walid

2007-03-20

The state of New York through the New York State Energy Research and Development Authority (NYSERDA) has developed a suite of digester projects throughout the state to assess the potential for anaerobic digestion systems to improve manure management and concurrently produce energy through the production of heat and electrical power using the biogas produced from the digesters. Dairies comprise a significant part of the agribusiness and economy of the state of New York. Improving the energy efficiency and environmental footprint of dairies is a goal of NYSERDA. SUNY Morrisville State College (MSC) is part of a collection of state universities,more » dairy farms, cooperatives, and municipalities examining anaerobic digestion systems to achieve the goals of NYSERDA, the improvement of manure management, and reducing emissions to local dairy animal sites. The process for siting a digester system at the MSC’s free-stall Dairy Complex was initiated in 2002. The project involved the construction of an anaerobic digester that can accommodate the organic waste generated at Dairy complex located about a mile southeast of the main campus. Support for the project was provided through funding from the New York State Energy Research and Development Authority (NYSERDA) and the New York State Department of Agriculture and Markets. The DOE contribution to the project provided additional resources to construct an expanded facility to handle waste generated from the existing free-stall dairy and the newly-constructed barns. Construction on the project was completed in 2006 and the production of biogas started soon after the tanks were filled with the effluent generated at the Dairy Complex. The system has been in operation since December 17, 2006. The generated biogas was consistently flared starting from December 20, 2006, and until the operation of the internal combustion engine/generator set were first tested on the 9th of January, 2007. Flaring the biogas continued until the interconnect with the power grid was approved by NYSEG (the electrical power provider) and the combined heat and power generation (CHP) system was authorized to start on February 27, 2007. The system has been in operation since February 28, 2007, and is generating 45 to 50 kW of electrical power on continuous basis. The completed project will ultimately allow for investigating the facility of utilizing organic waste from a dairy operation in a hard-top plug-flow methane digester with the ultimate goal of reducing environmental risk, increasing economic benefits, and demonstrating the viability of an anaerobic methane digestion system. Many benefits are expected as a result of the completed project including our better understanding of the anaerobic digestion process and its management as well as the facility to utilize the methane digester as a demonstration site for dairy producers, farmers, and organic waste producers in New York State and the Northeast. Additional benefits include helping current and future students in dairy science and technology, agricultural business, environmental sciences, agricultural engineering, and other disciplines develop better understanding of underutilized biomass alternative energy technologies, environmental conservation, environmental stewardship, and sustainable agriculture.« less

Lifecycle Greenhouse Gas Analysis of an Anaerobic Codigestion Facility Processing Dairy Manure and Industrial Food Waste.

PubMed

Ebner, Jacqueline H; Labatut, Rodrigo A; Rankin, Matthew J; Pronto, Jennifer L; Gooch, Curt A; Williamson, Anahita A; Trabold, Thomas A

2015-09-15

Anaerobic codigestion (AcoD) can address food waste disposal and manure management issues while delivering clean, renewable energy. Quantifying greenhouse gas (GHG) emissions due to implementation of AcoD is important to achieve this goal. A lifecycle analysis was performed on the basis of data from an on-farm AcoD in New York, resulting in a 71% reduction in GHG, or net reduction of 37.5 kg CO2e/t influent relative to conventional treatment of manure and food waste. Displacement of grid electricity provided the largest reduction, followed by avoidance of alternative food waste disposal options and reduced impacts associated with storage of digestate vs undigested manure. These reductions offset digester emissions and the net increase in emissions associated with land application in the AcoD case relative to the reference case. Sensitivity analysis showed that using feedstock diverted from high impact disposal pathways, control of digester emissions, and managing digestate storage emissions were opportunities to improve the AcoD GHG benefits. Regional and parametrized emissions factors for the storage emissions and land application phases would reduce uncertainty.

Optimal management of substrates in anaerobic co-digestion: An ant colony algorithm approach.

PubMed

Verdaguer, Marta; Molinos-Senante, María; Poch, Manel

2016-04-01

Sewage sludge (SWS) is inevitably produced in urban wastewater treatment plants (WWTPs). The treatment of SWS on site at small WWTPs is not economical; therefore, the SWS is typically transported to an alternative SWS treatment center. There is increased interest in the use of anaerobic digestion (AnD) with co-digestion as an SWS treatment alternative. Although the availability of different co-substrates has been ignored in most of the previous studies, it is an essential issue for the optimization of AnD co-digestion. In a pioneering approach, this paper applies an Ant-Colony-Optimization (ACO) algorithm that maximizes the generation of biogas through AnD co-digestion in order to optimize the discharge of organic waste from different waste sources in real-time. An empirical application is developed based on a virtual case study that involves organic waste from urban WWTPs and agrifood activities. The results illustrate the dominate role of toxicity levels in selecting contributions to the AnD input. The methodology and case study proposed in this paper demonstrate the usefulness of the ACO approach in supporting a decision process that contributes to improving the sustainability of organic waste and SWS management. Copyright © 2016 Elsevier Ltd. All rights reserved.

Next-generation non-starch polysaccharide-degrading, multi-carbohydrase complex rich in xylanase and arabinofuranosidase to enhance broiler feed digestibility.

PubMed

Cozannet, Pierre; Kidd, Michael T; Montanhini Neto, Roberto; Geraert, Pierre-André

2017-08-01

This study was carried out to evaluate the effect of a multi-carbohydrase complex (MCC) rich in xylanase (Xyl) and arabinofuranosidase (Abf) on overall broiler feed digestibility in broilers. Energy utilization and digestibility of dry matter (DM), organic matter (OM), protein, starch, fat, and insoluble and soluble fibers were measured using the mass-balance method. The experiment was carried out on 120 broilers (3-week-old chickens). Broilers were distributed over 8 treatments to evaluate the effect of the dietary arabinoxylan content and nutrient density with and without MCC (Rovabio® Advance). The graded content of arabinoxylan (AX) was obtained using different raw materials (wheat, rye, barley, and dried distillers' wheat). Diet-energy density was modified with added fat. Measurements indicated that nutrient density and AX content had a significant effect on most digestibility parameters. Apparent metabolizable energy (AME) was significantly increased (265 kcal kg-1) by MCC. The addition of MCC also resulted in significant improvement in the digestibility of all evaluated nutrients, with average improvements of 3.0, 3.3, 3.2, 3.0, 6.2, 2.9, 5.8, and 3.8% units for DM, OM, protein, starch, fat, insoluble and soluble fibers, and energy utilization, respectively. The interaction between MCC and diet composition was significant for the digestibility of OM, fat, protein, and energy. Nutrient digestibility and diet AME were negatively correlated with AX content (P < 0.001). However, the addition of MCC resulted in a reduction of this negative effect (P < 0.001). The AME of diets with and without the addition of MCC were successfully predicted by the diet digestible nutrient (i.e., starch, protein, fat, insoluble and soluble fibers) content with and without MCC (R2 = 0.87; RSD = 78 kcal kg-1). This study confirms that the presence of AX in wheat-based diets and wheat-based diets with other cereals and cereal by-products reduces nutrient digestibility in broiler chickens. Furthermore, the dietary addition of MCC, which is rich in Xyn and Abf, reduced deleterious effect of fiber and improved overall nutrient digestibility in broiler diets. © 2017 Poultry Science Association Inc.

CAM and Hepatitis C: A Focus on Herbal Supplements

MedlinePlus

... health/clinicaltrials/ Key References Dhiman RK, Chawla YK. Herbal medicines for liver diseases . Digestive Diseases and Sciences . 2005; ... double-blind, placebo-controlled trial. Annals of Internal Medicine ... TM, Szabo G, et al. Herbal product use by persons enrolled in the Hepatitis ...

Effect of milk replacer feeding rate and functional fatty acids on dairy calf performance and digestion of nutrients.

PubMed

Hill, T M; Quigley, J D; Suarez-Mena, F X; Bateman, H G; Schlotterbeck, R L

2016-08-01

Calves fed large amounts of milk replacer (MR) gain more body weight preweaning than calves fed less MR; however, postweaning growth may be reduced because of impaired digestion of nutrients. This was explored in the current research, as was the inclusion of functional fatty acids (NT) that could ameliorate some poor growth and digestion issues in calves fed large amounts of MR. Two MR rates [moderate (MOD) or aggressive (AGG)] with and without NT were compared using 48 male Holstein calves initially 3d old (43±1.5kg of body weight) randomly assigned to treatments. The MOD rate was fed at 0.66kg of dry matter (DM) for 49d. The AGG rate was fed for 4d at 0.66kg of DM, 4d at 0.96kg of DM, then 34d at 1.31kg of DM, followed by 0.66kg of DM for the last 7d. Calves were completely weaned at 49d. The MR contained 27% crude protein and 17% fat. The textured starter was 20% crude protein. Starter and water were fed free-choice for the first 56d when calves were housed in individual pens. From 56 to 112d, calves were grouped (4 calves/pen), maintaining the same MR rate and NT treatments, and fed starter blended with 5% chopped grass hay free-choice with free-choice water. Digestibility was estimated from fecal collections made on d 19 to 23, 40 to 44, and 52 to 56. Data were analyzed as a completely randomized design with a factorial arrangement of MR rate and NT using repeated measures with a mixed procedure. Fiber and starch digestion increased with age and was lower for AGG versus MOD. Calf average daily gain and hip width change were greater before approximately 6wk of age for AGG versus MOD, but this was reversed from approximately 6 to 16wk. Calves fed AGG had lower average daily gain per unit intake of DM, crude protein, and metabolizable energy from 8 to 16wk than calves fed MOD. Preweaning starter intake was less for calves fed AGG versus MOD. Calves fed AGG had greater body weight gain than MOD over 112d, but hip width change did not differ. Feeding NT improved digestibility of organic matter, DM, neutral detergent fiber, and acid detergent fiber (over 50% improvement for neutral detergent fiber and acid detergent fiber), which resulted in 10.7kg (13%) more body weight gain and 1.4cm (16%) more hip width change over 112d. This was a greater improvement in growth than the difference in AGG and MOD programs over 112d. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Phototoxicity of Selected Nanomaterials

EPA Science Inventory

Quantification of exposure to nanomaterials is critical for assessing their environmental hazard and risk. This is an immediate issue for nano-TiO2 because it is one of more common nanomaterials now in commerce, and is difficult to analyze using common acid-digestion techniques. ...

Left-Right Asymmetric Morphogenesis in the Xenopus Digestive System

USGS Publications Warehouse

Muller, Jennifer K.; Prather, D.R.; Nascone-Yoder, N. M.

2003-01-01

The morphogenetic mechanisms by which developing organs become left-right asymmetric entities are unknown. To investigate this issue, we compared the roles of the left and right sides of the Xenopus embryo during the development of anatomic asymmetries in the digestive system. Although both sides contribute equivalently to each of the individual digestive organs, during the initial looping of the primitive gut tube, the left side assumes concave topologies where the right side becomes convex. Of interest, the concave surfaces of the gut tube correlate with expression of the LR gene, Pitx2, and ectopic Pitx2 mRNA induces ectopic concavities in a localized manner. A morphometric comparison of the prospective concave and convex surfaces of the gut tube reveals striking disparities in their rate of elongation but no significant differences in cell proliferation. These results provide insight into the nature of symmetry-breaking morphogenetic events during left-right asymmetric organ development. ?? 2003 Wiley-Liss, Inc.

Teachable Moments in the News - an Online Resource Solar System Science News

NASA Astrophysics Data System (ADS)

Vanhala, H. A. T.; Miller, E. A.; Goldstein, J. J.

2004-12-01

Teachable Moments in the News (www.challenger.org/tmn/) is an online resource developed at Challenger Center for Space Science Education that takes recent news stories related to Solar System science and places them in a context relevant to the grades K-12 science curriculum. Using stories such as the launch of the MESSENGER spacecraft to Mercury, Teachable Moments in the News is meant to provide a seamless pathway from the news desk to the classroom. For each news item, an overview of the story is provided, along with high-quality inquiry-based, standards-driven lessons and links to more in-depth articles. Teachable Moments in the News is also a great tool for scientists who wish to stay informed of the recent events in Solar System exploration. The archived back issues of the quarterly published Web digest allow for a quick refresher on the most important news stories over the past several months. The very accessible nature of the stories makes the resource valuable for college students, and even the general public, as a means to keep up-to-date about current developments in planetary astronomy. Furthermore, college and university teachers can easily adapt many of the lessons to fit into the curriculum of an undergraduate astronomy course. During the poster session, we welcome suggestions from the scientific community on ways to enhance the usefulness of Teachable Moments in the News. For example, researchers could form partnerships with Teachable Moments in the News to provide news stories on their current research to be featured on the Web site. We invite researchers interested in this education and public outreach tool to visit the poster and provide suggestions on how to make the resource work as effectively as possible.

Development of Socioscientific Issues-Based Teaching for Preservice Science Teachers

ERIC Educational Resources Information Center

Nuangchalerm, Prasart

2009-01-01

Problem statement: In the context of science education reform in Thailand, we need to prepare science teachers who can face science and social issues controversial; teachers can response the question socioscientific issues and let their students to meet the goal of science education. This study investigated the conception leading preservice…

Issue-Oriented Science: Using Socioscientific Issues to Engage Biology Students

ERIC Educational Resources Information Center

Lenz, Laura; Willcox, Maia K.

2012-01-01

In today's global society, with science and technology advancing at a rapid pace, issues about biological topics are common. A typical standards-based high school or general college-level biology classroom naturally lends itself to teaching issue-oriented science. In an issue-oriented classroom, students analyze and discuss personal, societal, and…

Reflecting Socio-Scientific Issues for Science Education Coming from the Case of Curriculum Development on Doping in Chemistry Education

ERIC Educational Resources Information Center

Stolz, Miriam; Witteck, Torsten; Marks, Ralf; Eilks, Ingo

2013-01-01

Socio-scientific issue-based science education has been suggested for promoting general educational skills development in science classes. However, there is a lack of operationalized criteria, which can be used to reflect upon societal issues to whether turning them into issues for science classroom instruction. This paper describes a case study…

Body Structure and Function. Teacher Edition.

ERIC Educational Resources Information Center

Oklahoma State Dept. of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

This curriculum guide contains the materials required to teach a course in body structure and function. The following topics are covered in the course's 17 instructional units: basic concepts of physical and life sciences; microbiology and bacteriology; the integumentary, skeletal, muscular, digestive, circulatory, respiratory, urinary, central…

Teaching Archaeology. ERIC Digest.

ERIC Educational Resources Information Center

Brown, Gail William

How could handchipped stones, ancient ruins, old broken dishes, and antiquated garbage help students learn about the world and themselves? Within archaeology, these seemingly irrelevant items can enlighten students about the world around them through science, culture, and history. When teaching archaeology in the classroom, educators can lead…

Global Education: Internet Resources. ERIC Digest.

ERIC Educational Resources Information Center

Pinhey, Laura A.

The Internet is an important resource for K-12 global education teachers. Developments over the past two decades have increased the media exposure of nations and interactions among them in politics, trade, education, science, medicine, entertainment, and athletics. Good global education curriculum encourages understanding of cultural differences…

ABCs of GERD

MedlinePlus

... if you’re thinking about anti-reflux surgery. SOURCE: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Fall 2017 Issue: Volume 12 Number 3 Page 4-5 MedlinePlus Subscribe Magazine Information Contact Us Viewers & Players Friends of the National Library of Medicine (FNLM) top

Factors affecting energy and nitrogen efficiency of dairy cows: a meta-analysis.

PubMed

Phuong, H N; Friggens, N C; de Boer, I J M; Schmidely, P

2013-01-01

A meta-analysis was performed to explore the correlation between energy and nitrogen efficiency of dairy cows, and to study nutritional and animal factors that influence these efficiencies, as well as their relationship. Treatment mean values were extracted from 68 peer-reviewed studies, including 306 feeding trials. The main criterion for inclusion of a study in the meta-analysis was that it reported, or permitted calculation of, energy efficiency (Eeff; energy in milk/digestible energy intake) and nitrogen efficiency (Neff; nitrogen in milk/digestible nitrogen intake) at the digestible level (digestible energy or digestible protein). The effect of nutritional and animal variables, including neutral detergent fiber, acid detergent fiber (ADF), digestible energy, digestible protein, proportion of concentrate (PCO), dry matter intake, milk yield, days in milk, and body weight, on Eeff, Neff, and the Neff:Eeff ratio was analyzed using mixed models. The interstudy correlation between Eeff and Neff was 0.62, whereas the intrastudy correlation was 0.30. The higher interstudy correlation was partly due to milk yield and dry matter intake being present in both Eeff and Neff. We, therefore, also explored the Neff:Eeff ratio. Energy efficiency was negatively associated with ADF and PCO, whereas Neff was negatively associated with ADF and digestible energy. The Neff:Eeff ratio was affected by ADF and PCO only. In conclusion, the results indicate a possibility to maximize feed efficiency in terms of both energy and nitrogen at the same time. In other words, an improvement in Eeff would also mean an improvement in Neff. The current study also shows that these types of transverse data are not sufficient to study the effect of animal factors, such as days in milk, on feed efficiency. Longitudinal measurements per animal would probably be more appropriate. Copyright © 2013 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Survival of lactic acid bacteria from fermented milks in an in vitro digestion model exploiting sequential incubation in human gastric and duodenum juice.

PubMed

Faye, T; Tamburello, A; Vegarud, G E; Skeie, S

2012-02-01

In the present study, the survival of 9 lactic acid bacteria (5 Lactococcus strains, 3 Lactobacillus strains, and 1 strain of Enterococcus hirae), was investigated in vitro under conditions similar to human digestion using human gastric and duodenal juices. The tolerance of the bacteria was also tested with traditional methods using acidic conditions and bile salts. The strains were subjected to a model digestive system comprising sequential incubation in human gastric and duodenal juices, in a 2-step digestion assay at 37°C, simulating the human upper gastrointestinal tract with human gastric juices at pH 2.5 and human duodenal juices at pH 7. The bacterial strains were tested either as washed cells from culture media or in fermented milk. The initial in vitro testing in acid and bile salts showed that Lactobacillus strains and the E. hirae strain displayed a significantly higher acid tolerance than the lactococci. The lactobacilli and the Enterococcus numbers increased, whereas the lactococci decreased at least 1 log during the bile salt treatment. The Lactobacillus strains showed the highest survival rate in the model digestive system when washed bacterial cultures were used with a minor log reduction, whereas the lactococci numbers were reduced by at least log 4. However, when using fermented milks in the model digestion system it was demonstrated that the Enterococcus strain and 2 strains of Lactococcus lactis ssp. cremoris benefited significantly from the presence of the fermented milk as food matrix, with log numbers >log 7 and 5, respectively, after digestion of the fermented milk. The analyses reported comprise a comprehensive in vitro testing regimen suitable for evaluation of the survival of candidate probiotic bacteria in human digestion as an initial prescreen to clinical trials. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Teaching controversial issues in the secondary school science classroom

NASA Astrophysics Data System (ADS)

van Rooy, Wilhelmina

1993-12-01

A sample of fourteen secondary school biology teachers chosen from twelve schools were interviewed. The purpose was to determine their views on how controversial issues in science might be handled in the secondary school science classroom and whether the issues of surrogacy and human embryo experimentation were suitable controversial issues for discussion in schools. In general, teachers indicated that controversial issues deserve a more prominent place in the science curriculum because they have the potential to foster thinking, learning, and interest in science. The issues of surrogacy and human embryo experimentation were seen as appropriate contexts for learning, provided that teachers were well informed and sensitive to both the students and to the school environment.

Where civics meets science: building science for the public good through Civic Science.

PubMed

Garlick, J A; Levine, P

2017-09-01

Public understanding of science and civic engagement on science issues that impact contemporary life matter more today than ever. From the Planned Parenthood controversy, to the Flint water crisis and the fluoridation debate, societal polarization about science issues has reached dramatic levels that present significant obstacles to public discussion and problem solving. This is happening, in part, because systems built to support science do not often reward open-minded thinking, inclusive dialogue, and moral responsibility regarding science issues. As a result, public faith in science continues to erode. This review explores how the field of Civic Science can impact public work on science issues by building new understanding of the practices, influences, and cultures of science. Civic Science is defined as a discipline that considers science practice and knowledge as resources for civic engagement, democratic action, and political change. This review considers how Civic Science informs the roles that key participants-scientists, public citizens and institutions of higher education-play in our national science dialogue. Civic Science aspires to teach civic capacities, to inform the responsibilities of scientists engaged in public science issues and to inspire an open-minded, inclusive dialogue where all voices are heard and shared commitments are acknowledged. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

Relationship between miR-146a rs2910164 (G>C) Polymorphism and Digestive System Cancer Susceptibility: A Meta-Analysis.

PubMed

Xiong, Xin; Yan, Junfeng; Li, Linghua; Li, Yun; Cao, Yi; Tu, Yi; Mei, Jinhong

2017-08-01

MicroRNAs (miRNAs) are identified negatively regulating gene expression and acting as oncogenes or tumor suppressors in tumorigenesis. The association between miR-146a rs2910164 (G>C) polymorphism and susceptibility to digestive system cancers was contradictory and inconsistent in previously published studies. Presently, we performed a comprehensive literature retrieve on PubMed, Web of Science, Embase, Wanfang and CNKI databases to identify all relevant studies published before July 30, 2016. Odds ratio (OR) and 95% confidential interval (95%CI) were used to calculate the relationship between miR-146a rs2910164 (G>C) polymorphism and digestive system cancers susceptibility. Finally, a total of 45 publications comprising 47 separate case-control studies were enrolled in the present updated meta-analysis including 20,281 cases and 26,099 controls. However, no significant association was uncovered for miR-146a rs2910164 polymorphism and digestive system cancers susceptibility in all the genetic models. Moreover, in the stratification analyses by cancer type, the source of control, ethnicity and Hardy-Weinberg Equilibrium (HWE) status, we also revealed a negative result. To conclude, our work suggests that miR-146a rs2910164 (G>C) polymorphism is not a susceptibility factor for digestive system cancers. © 2017 by the Association of Clinical Scientists, Inc.

Effects of dietary manganese supplementation on nutrient digestibility and production performance in male sika deer (Cervus Nippon).

PubMed

Bao, Kun; Wang, Kaiying; Wang, Xiaoxu; Zhang, Tietao; Liu, Hanlu; Li, Guangyu

2017-03-01

This study aimed to investigate the effects of manganese (Mn) supplementation on nutrient digestibility and antler growth in male sika deer. Twenty 3-year-old male sika deer were divided into four groups (Control, T40, T80 and T120). The control diet contained 22.2 mg Mn/kg. The treatment diets were supplemented with 40, 80 and 120 mg of Mn/kg (provided as Mn methionine). The results showed that the digestibility of dry matter and crude protein in the T80 group was greater than other groups. Higher digestibility of neutral detergent fiber and acid detergent fiber was observed in the T80 group than in the control group. Plasma Mn concentrations in the T80 and T120 groups were higher (P < 0.01) than control and T40 group (P < 0.01). The concentration of Mn in feces was increased with increasing Mn amount. Average daily gain of fresh antler and dry antler of T80 was greater than other groups, especially the control group (P < 0.05). In conclusion, the suitable level of Mn supplementation was found to be 80 mg/kg (total Mn content 103.4 mg/kg dry matter), which significantly increased antler daily gain and feed digestibility in 3-year-old sika deer. © 2016 Japanese Society of Animal Science.

In vitro gas production in rumen fluid of buffalo as affected by urea-calcium mixture in high-quality feed block.

PubMed

Cherdthong, Anusorn; Wanapat, Metha

2014-04-01

This study aimed to determine the effect of urea-calcium sulphate mixture (U-cas) levels in high-quality feed block (HQFB) on ruminal digestibility, fermentation and gas kinetics in rumen fluid of swamp buffalo by using in vitro techniques. The treatments were seven levels of U-cas incorporated in HQFB at 0, 3, 6, 9, 12, 15 and 18% and the experimental design was a completely randomized design. Gas production rate constants for the insoluble fraction, potential extent of gas and cumulative gas were linearly increased with increasing levels of U-cas in HQFB. The in vitro dry matter digestibility, in vitro organic matter digestibility, true digestibility and microbial mass were altered by treatments and were greatest at 18% U-cas supplementation. Concentrations of propionate were linearly increased with increasing levels of U-cas and was highest with U-cas supplementation at 18%. The NH3 -N concentration was highest when urea was added in the HQFB while NH3 -N concentration tended to be reduced with increasing level of U-cas. The findings suggest supplementation of 18% U-cas in HQFB improves kinetics of gas production, rumen fermentation, digestibility and microbial mass as well as controlling the rate of N degradation in the rumen of swamp buffalo. © 2014 Japanese Society of Animal Science.

Prececal amino acid digestibility of soybean cake in fast- and slow-growing broiler chickens.

PubMed

Ganzer, C; Siegert, W; Kluth, H; Bennewitz, J; Rodehutscord, M

2017-08-01

The objective of the present study was to determine whether there are differences in prececal amino acid digestibility between commonly used slow- and fast-growing broiler strains when the regression approach is applied. ISA J-275 and Ross 308 were selected as common representatives of slow- and fast-growing broiler strains, respectively. The experimental diets with soybean cake at levels of 0, 100, and 200 g/kg were offered for ad libitum consumption between 22 and 29 d post-hatch. Titanium dioxide was used as an indigestible marker. Each treatment was tested with six pens comprising 10 birds each. Digesta samples were collected on a pen basis from the distal two-thirds of the intestine section between Meckel's diverticulum and 2 cm anterior to the ileocecal-colonic junction. The prececal amino acid digestibility of soybean cake was calculated by linear regression simultaneously for both strains. There was no significant interaction between broiler strain and inclusion level of soybean cake with respect to the prececal CP and amino acid digestibility of complete diets; there was a significant strain effect for 5 out of the 16 measured amino acids. The prececal CP and amino acid digestibility of soybean cake did not differ significantly between strains and was numerically almost identical. The results of the present study provide evidence of the transferability between broiler strains of prececal amino acid digestibility data, determined using the regression approach, thus improving the accuracy of diet formulation without drawbacks. © 2017 Poultry Science Association Inc.

β-Lactoglobulin-linoleate complexes: In vitro digestion and the role of protein in fatty acid uptake.

PubMed

Le Maux, Solène; Brodkorb, André; Croguennec, Thomas; Hennessy, Alan A; Bouhallab, Saïd; Giblin, Linda

2013-07-01

The dairy protein β-lactoglobulin (BLG) is known to bind fatty acids such as the salt of the essential longchain fatty acid linoleic acid (cis,cis-9,12-octadecadienoic acid, n-6, 18:2). The aim of the current study was to investigate how bovine BLG-linoleate complexes, of various stoichiometry, affect the enzymatic digestion of BLG and the intracellular transport of linoleate into enterocyte-like monolayers. Duodenal and gastric digestions of the complexes indicated that BLG was hydrolyzed more rapidly when complexed with linoleate. Digested as well as undigested BLG-linoleate complexes reduced intracellular linoleate transport as compared with free linoleate. To investigate whether enteroendocrine cells perceive linoleate differently when part of a complex, the ability of linoleate to increase production or secretion of the enteroendocrine satiety hormone, cholecystokinin, was measured. Cholecystokinin mRNA levels were different when linoleate was presented to the cells alone or as part of a protein complex. In conclusion, understanding interactions between linoleate and BLG could help to formulate foods with targeted fatty acid bioaccessibility and, therefore, aid in the development of food matrices with optimal bioactive efficacy. Copyright © 2013 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Ontogeny changes and weaning effects in gene expression patterns of digestive enzymes and regulatory digestive factors in spotted rose snapper (Lutjanus guttatus) larvae.

PubMed

Moguel-Hernández, I; Peña, R; Andree, K B; Tovar-Ramirez, D; Bonacic, K; Dumas, S; Gisbert, E

2016-10-01

The study of digestive physiology is an important issue in species that have been introduced in aquaculture like the spotted rose snapper (Lutjanus guttatus). The aims of this study were to describe the expression of digestive enzymes (trypsinogen, chymotrypsinogen, α-amylase, lipoprotein lipase, phospholipase A and pepsinogen) and their relation with orexigenic (neuropeptide Y, NPY) and anorexigenic (cholecystokinin, CCK) factors during the larval development and to evaluate the effect of weaning in their expression. The results showed that the transcripts of all the assayed digestive enzymes, with the exception of pepsinogen, and NPY and CCK were already present in L. guttatus from the hatching stage. The expression of all the enzymes was low during the yolk-sac stage (0-2 days after hatching, DAH), whereas after the onset of exogenous feeding at 2 DAH, their expression increased and fluctuated throughout larval development, which followed a similar pattern as in other marine fish species and reflected changes in different types of food items and the progressive maturation of the digestive system. On the other hand, weaning of L. guttatus larvae from live prey onto a microdiet between 25 and 35 DAH significantly affected the relative expression of most pancreatic digestive enzymes during the first weaning days, whereas chymotrypsinogen 2 and lipoprotein lipase remained stable during this period. At the end of co-feeding, larvae showed similar levels of gene expression regardless of the diet (live prey vs. microdiet), which indicated that larvae of L. guttatus were able to adapt their digestive capacities to the microdiet. In contrast, feeding L. guttatus larvae with live feed or microdiet did not affect the expression of CCK and NPY. The relevance of these findings with regard to current larval rearing procedures of L. guttatus is discussed.

USSR and Eastern europe Scientific Abstracts, Biomedical and Behavioral Sciences. Number 55.

DTIC Science & Technology

1976-11-02

could solve the problems of the first manned flight. Can people breathe in weightlessness? Are they capable of digesting food? Is it possible in...Animals and Department of Poultry Farming (Timiryazev Agri- cultural Academy) MEAT PRODUCTIVITY OF BROILERS FED WITH DIFFERENT FATS Moscow

Human Diet and Nutrition. LC Science Tracer Bullet.

ERIC Educational Resources Information Center

Rodgers, Kay, Comp.

This bibliography of publications on nutrition and diet includes materials on the following subjects: diet selection, nutritional content of foods, ingestion, digestion, absorption, transportation, metabolism, utilization of nutrients and food by the cells of the body, excretion, and the results of inadequate, deficient, or excessive nutrient…

[Neuroendocrine tumors of digestive system: morphologic spectrum and cell proliferation (Ki67 index)].

PubMed

Delektorskaia, V V; Kushliskiĭ, N E

2013-01-01

This review deals with the analysis of up-to-date concepts ofdiferent types of human neuroendocrine tumors of the digestive system. It summarizes the information on the specifics of recent histological classifications and criteria of morphological diagnosis accounting histological, ultrastructural and immunohistochemical parameters. Current issues of the nomenclature as well as various systems of grading and staging are discussed. In the light of these criteria the results of the own research clinical value of the determination of cell proliferation in primary and metastatic gastroenteropancreatic neuroendocrine neoplasms on the basis of evaluation of the Ki67 antigen expression are also presented.

Dental Emergencies: Management Strategies That Improve Outcomes [Digest].

PubMed

Pedigo, Ryan Anthony; Zaurova, Milana

2017-06-22

Points & Pearls is a digest of Emergency Medicine Practice . Acute dental emergencies are a common chief complaint presenting to emergency departments, and they are increasing substantially in frequency. The diagnosis and management of dental emergencies is a core competency of the emergency clinician, and proper therapeutic strategies can significantly improve cosmetic and functional outcomes for patients. This issue provides a systematic review of the literature on common acute traumatic and atraumatic dental emergencies with a focus on the historical and physical examination findings that must be understood to identify life-threatening infections, relieve pain, salvage natural teeth, and communicate with specialists in the further management of patients after emergency treatment.

Low-carbon yak cheese: transition to biogas in a Himalayan socio-technical niche

PubMed Central

Campbell, Ben; Sallis, Paul

2013-01-01

This study looks at how potential for resilient low-carbon solutions can be understood and enhanced in the diverse environmental, economic and socio-political contexts in which actual scenarios of energy needs and diverse development pathways take shape. It discusses socio-technical transition approaches to assist implementation of a biogas digester system. This will replace fuelwood use in the high forests of Central Nepal, where yak cheese production provides livelihood income but is under threat from the Langtang National Park, which is concerned to protect biodiversity. Alternatives for digester design are discussed, and the consultative issues for deliberative processes among stakeholders’ varied agendas raised. PMID:24427516

Short communication: Evaluation of acid-insoluble ash and indigestible neutral detergent fiber as total-tract digestibility markers in dairy cows fed corn silage-based diets.

PubMed

Lee, C; Hristov, A N

2013-08-01

The objective of this experiment was to evaluate acid-insoluble ash (AIA) and indigestible NDF (iNDF) as intrinsic digestibility markers in comparison with total fecal collection (TC) in dairy cows fed corn silage- and alfalfa haylage-based diets. The experiment was part of a larger experiment, which involved 8 Holstein cows [102±28.4 d in milk, 26.4±0.27 kg/d of dry matter (DM) intake, and 43±5.3 kg/d milk yield]. The experimental design was a replicated 4×4 Latin square with the following treatments: metabolizable protein (MP)-adequate diet [15.6% crude protein (CP); high-CP], MP-deficient diet (14.0% CP; low-CP), and 2 other low-CP diets supplemented (top-dressed) with ruminally protected Lys or Lys and Met. Data for the 3 low-CP diets were combined for this analysis. Total feces were collected for 5 consecutive days during each period to estimate total-tract apparent digestibility. Digestibility was also estimated using AIA (digestion with 2 N HCl) and iNDF (12-d ruminal incubation in 25-μm-pore-size bags). Significant diet × digestibility method interactions were observed for fecal output of nutrients and digestibility. Fecal output of nutrients estimated using AIA or iNDF was lower compared with TC and fecal output of DM, organic matter, and CP tended to be higher for iNDF compared with AIA for the high-CP diet. For the low-CP diet, however, fecal output of all nutrients was lower for AIA compared with TC and was higher for iNDF compared with TC. Data from this experiment showed that, compared with TC, AIA underestimated fecal output and overestimated digestibility, particularly evident with the fiber fractions and the protein-deficient diet. Compared with TC, fecal output was overestimated and digestibility of the low-CP diet was underestimated when iNDF was used as a marker, although the magnitude of the difference was smaller compared with that for AIA. In the conditions of the current study, iNDF appeared to be a more reliable digestibility marker than AIA in terms of detecting dietary differences in apparent digestibility of some nutrients, but significant diet × marker interactions existed that need to be considered when estimating total-tract digestibility using intrinsic markers. Copyright © 2013 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Current Issues in Research on Intelligence. ERIC/AE Digest.

ERIC Educational Resources Information Center

Yekovich, Frank R.

Intelligence has been defined and studied under a number of different rubrics. Three individuals serve as a representative sample of the educational and psychological researchers associated with cognitive psychology who have made significant contributions to current understandings of intelligence. Robert Sternberg's theory contains subcategories…

Internationalizing the Community College: Examples of Success. ERIC Digest.

ERIC Educational Resources Information Center

Quimbita, Grace

With the growing technological, economic and political interdependence between nations, the word "community" has come to have international implications. In order to alleviate American ignorance about other nations and global issues, community colleges must institutionalize international perspectives into their curricula. More than 50%…

Variability in amino acid digestibility of triticale grain from diverse genotypes as studied in cecectomized laying hens.

PubMed

Zuber, T; Maurer, H P; Möhring, J; Nautscher, N; Siegert, W; Rosenfelder, P; Rodehutscord, M

2016-12-01

Triticale, an anthropogenic hybrid grain, is increasing in importance as a feed grain for laying hens. However, our limited knowledge of its nutritional qualities and their impact on hen performance prevents optimization of its use. The present study investigated the digestibility of amino acids ( AA: ) in triticale grain in laying hens, and additionally examined relationships between AA digestibility and chemical and physical characteristics of the grain. Twenty genotypes of triticale were grown under standardized agronomic and environmental conditions and were characterized according to their physical properties (thousand-seed weight, test weight, falling number, extract viscoelasticity), chemical composition (proximate nutrients, non-starch polysaccharides, AA, minerals, inositol phosphates) and gross energy concentration. Additionally, the in vitro solubility of nitrogen was determined. The animal trial comprised 4 Latin Squares (6 × 6) distributed among 2 subsequent runs. Twelve cecectomized LSL-Classic hens were individually housed in metabolism cages and either fed a basal diet containing 500 g/kg cornstarch or one of 20 triticale diets, each replacing the cornstarch with one triticale genotype, for 8 d. During the last 4 d, feed intake was recorded and excreta were collected quantitatively. Amino acid digestibility of the triticale genotypes was calculated by linear regression. The digestibility of all AA differed significantly between the 20 genotypes, including Lys (digestibility range 68 to 80%), Met (77 to 86%), Thr (68 to 78%) and Trp (74 to 83%). However, AA digestibility only correlated with characteristics of the grain in few cases, without a consistent pattern among AA. Equations to predict AA digestibility based on the grain's physical and chemical characteristics were calculated by multiple linear regression. The explanatory power (adjusted R 2 ;) of these prediction equations was below 0.7 for most AA and thus not sufficiently precise to be suitable for practical application. In conclusion, AA digestibility of triticale grain is high overall in laying hens but varies significantly between crop genotypes. This variation could not be well explained by physical and chemical characteristics of the grain. © 2016 Poultry Science Association Inc.

Household anaerobic digester for bioenergy production in developing countries: opportunities and challenges.

PubMed

Surendra, K C; Takara, Devin; Jasinski, Jonas; Khanal, Samir Kumar

2013-01-01

Access to clean and affordable energy is vital for advancing development objectives, particularly in rural areas of developing countries. There are some three billion people in these regions, however, who lack consistent access to energy and rely on traditional solid fuels such as firewood, cattle manure, and crop residues for meeting cooking and heating needs. Excessive use of such highly polluting resources creates serious environmental, social and public health issues. In this context, household digesters (which convert readily available feedstocks such as cattle manure, human excreta, and crop residues into biogas) have the potential to play a significant role in supplying methane as a clean, renewable energy resource for remote geographies. In addition to bioenergy production, the slurry generated from anaerobic digestion is rich in nutrients and can improve the physical, chemical, and biological attributes of soil when applied to agricultural land. This type of approach has the potential to significantly reduce greenhouse gas emissions while simultaneously improving the quality of life. Despite a long history of research and innovation for the development and optimization of household digesters, little is known and has been reported for the application of these systems in decentralized communities. The primary purpose of this paper seeks to review the dearth of literature pertaining to small-scale anaerobic digesters in remote geographies and in regions where much of the world's population reside.

Fast characterization of solid organic waste content with near infrared spectroscopy in anaerobic digestion.

PubMed

Charnier, Cyrille; Latrille, Eric; Jimenez, Julie; Lemoine, Margaux; Boulet, Jean-Claude; Miroux, Jérémie; Steyer, Jean-Philippe

2017-01-01

The development of anaerobic digestion involves both co-digestion of solid wastes and optimization of the feeding recipe. Within this context, substrate characterisation is an essential issue. Although it is widely used, the biochemical methane potential is not sufficient to optimize the operation of anaerobic digestion plants. Indeed the biochemical composition in carbohydrates, lipids, proteins and the chemical oxygen demand of the inputs are key parameters for the optimisation of process performances. Here we used near infrared spectroscopy as a robust and less-time consuming tool to predict the solid waste content in carbohydrates, lipids and nitrogen, and the chemical oxygen demand. We built a Partial Least Square regression model with 295 samples and validated it with an independent set of 46 samples across a wide range of solid wastes found in anaerobic digestion units. The standard errors of cross-validation were 90mgO 2 ⋅gTS -1 carbohydrates, 2.5∗10 -2 g⋅gTS -1 lipids, 7.2∗10 -3 g⋅gTS -1 nitrogen and 99mgO 2 ⋅gTS -1 chemical oxygen demand. The standard errors of prediction were 53mgO 2 ⋅gTS -1 carbohydrates, 3.2∗10 -2 g⋅gTS -1 lipids, 8.6∗10 -3 g⋅gTS -1 nitrogen and 83mgO 2 ⋅gTS -1 chemical oxygen demand. These results show that near infrared spectroscopy is a new fast and cost-efficient way to characterize solid wastes content and improve their anaerobic digestion monitoring. Copyright © 2016 Elsevier Ltd. All rights reserved.

Persistent digestive disorders in the tropics: causative infectious pathogens and reference diagnostic tests

PubMed Central

2013-01-01

Background Persistent digestive disorders account for considerable disease burden in the tropics. Despite advances in understanding acute gastrointestinal infections, important issues concerning epidemiology, diagnosis, treatment and control of most persistent digestive symptomatologies remain to be elucidated. Helminths and intestinal protozoa are considered to play major roles, but the full extent of the aetiologic spectrum is still unclear. We provide an overview of pathogens causing digestive disorders in the tropics and evaluate available reference tests. Methods We searched the literature to identify pathogens that might give rise to persistent diarrhoea, chronic abdominal pain and/or blood in the stool. We reviewed existing laboratory diagnostic methods for each pathogen and stratified them by (i) microscopy; (ii) culture techniques; (iii) immunological tests; and (iv) molecular methods. Pathogen-specific reference tests providing highest diagnostic accuracy are described in greater detail. Results Over 30 pathogens may cause persistent digestive disorders. Bacteria, viruses and parasites are important aetiologic agents of acute and long-lasting symptomatologies. An integrated approach, consisting of stool culture, microscopy and/or specific immunological techniques for toxin, antigen and antibody detection, is required for accurate diagnosis of bacteria and parasites. Molecular techniques are essential for sensitive diagnosis of many viruses, bacteria and intestinal protozoa, and are increasingly utilised as adjuncts for helminth identification. Conclusions Diagnosis of the broad spectrum of intestinal pathogens is often cumbersome. There is a need for rapid diagnostic tests that are simple and affordable for resource-constrained settings, so that the management of patients suffering from persistent digestive disorders can be improved. PMID:23347408

Design and Economic Analysis of a Heating/Absorption Cooling System Operating with Municipal Solid Waste Digester: A Case Study of Gazi University

NASA Astrophysics Data System (ADS)

Coşar, Gökhan; Pooyanfar, Mirparham; Amirabedin, Ehsan; Topal, Hüseyin

2013-12-01

Recovering energy from municipal solid waste (MSW) is one of the most important issues of energy management in developed countries. This raises even more interest as world fossil fuel reserves diminish and fuel prices rise. Being one of main processes of waste disposal, anaerobic digestion can be used as a means to reduce fossil fuel and electricity consumption as well as reducing emissions. With growing demand for cooling in Turkey, especially during warm seasons and considering the energy costs, utilizing heat-driven absorption cooling systems coupled with an anaerobic digester for local cooling purposes is a potentially interesting alternative for electricity driven compression cooling. The aim of this article is to study the viability of utilizing biogas obtained from MSW anaerobic digestion as the main fuel for heating facilities of Gazi University, Turkey and also the energy source for an absorption cooling system designed for the central library of the aforementioned campus. The results prove that the suggested system is sustainably and financially appealing and has the potential to replace the conventional electricity driven cooling systems with a reasonable net present worth; moreover, it can notably reduce carbon dioxide emissions.

From Orthodoxy to Plurality in the Nature of Science (NOS) and Science Education: A Metacommentary

ERIC Educational Resources Information Center

Bazzul, Jesse

2017-01-01

This article provides a metacommentary on the special issue on nature of science (NOS). The issue is composed of senior scholars discussing Hodson and Wong's (2017, this issue) critique of the consensus view of nature of science, which on a basic level states that there are agreed-upon aspects of science that can be taught in K-12 schools. Each…

Internet Basics. ERIC Digest.

ERIC Educational Resources Information Center

Tennant, Roy

The Internet is a worldwide network of computer networks. In the United States, the National Science Foundation Network (NSFNet) serves as the Internet "backbone" (a very high speed network that connects key regions across the country). The NSFNet will likely evolve into the National Research and Education Network (NREN) as defined in…

Wood machining review, 1963 through 1965

Treesearch

Peter Koch; Charles W. McMillin

1966-01-01

The purpose of this paper is to review significant research that has not previously been digested in recent Engligh-language texts1 and bibliographies2,3,4. In general, only findings published during 1963, 1964, and 1965 are considered. The reviewers' principal sources were the major world journals in wood science and...

A 100-year review: Carbohydrates - characterization, digestion, and utilization

USDA-ARS?s Scientific Manuscript database

Our knowledge of the role of carbohydrates in dairy cattle nutrition has advanced substantially during the 100 years in which the Journal of Dairy Science has been published. In this review, we traced the history of scientific investigation and discovery from crude fiber, nitrogen-free extract, and ...

JPRS Report, Science & Technology, Japan

DTIC Science & Technology

1987-09-23

operational tests since late June at a test range in the United States. According to the Defense Agency (JDA), the missile succeeded 100% in hitting ...22, No 2, 8 (1986). 20. Tabata , N., et al., CLEO󈨘 DIGEST, 54 (1986). 21. Kuwabara, K., et al., Ibid., 220 (1986). 22. Kannari, F., et al., APPL

Conceptual Metaphor and Embodied Cognition in Science Learning: Introduction to Special Issue

ERIC Educational Resources Information Center

Amin, Tamer G.; Jeppsson, Fredrik; Haglund, Jesper

2015-01-01

This special issue of "International Journal of Science Education" is based on the theme "Conceptual Metaphor and Embodied Cognition in Science Learning." The idea for this issue grew out of a symposium organized on this topic at the conference of the European Science Education Research Association (ESERA) in September 2013.…

FLES News, Volume 3, Numbers 1-3, 1989-1990.

ERIC Educational Resources Information Center

FLES News, 1990

1990-01-01

These three issues of the FLES News newsletter contain the following articles: "What I Learned in Second Grade: A French Teacher's Experience" (Pat Westphal); "Foreign Language Program Articulation: Building Bridges from Elementary to Secondary School" (Jo Anne Wilson; an ERIC Digest); "How Do Principals View Foreign…

Deterrents to Participation in Adult Education. Overview. ERIC Digest No. 59.

ERIC Educational Resources Information Center

Kerka, Sandra

Changing socioeconomic, cultural, and demographic forces have caused educational nonparticipation among adults to be treated as a social issue. Recent research has attempted to combine dispositional, situational, and environmental factors into composite models of participation. These models have suggested the following categories of deterrence…

Source of carbohydrate and metabolizable lysine and methionine in the diet of recently weaned dairy calves on digestion and growth.

PubMed

Hill, T M; Quigley, J D; Bateman, H G; Aldrich, J M; Schlotterbeck, R L

2016-04-01

Two 56-d trials with weaned Holstein dairy calves (initially 72 ± 1.8 kg of body weight, 58 to 60 d of age) fed 95% concentrate and 5% chopped grass hay diets were conducted. Each trial used 96 calves (4 calves/pen). During 15 of the last 21 d of the first trial and 10 of 14 d of the second and third week of the second trial, fecal samples were taken to estimate digestibility using acid-insoluble ash as an internal marker. Digestibility estimates along with 56-d average daily gain (ADG), hip width change, body condition score, and fecal score were analyzed with pen as the experimental unit. In trial 1, a textured diet (19% crude protein) with high starch [52% starch, 13% neutral detergent fiber (NDF)] based on whole corn and oats or a pelleted low-starch (20% starch, 35% NDF), high-digestible fiber diet were used. Within starch level, diets were formulated from supplemental soybean meal or soybean meal with blood meal and Alimet (Novus International Inc., St. Charles, MO) to provide 2 metabolizable protein levels (1 and 1.07% metabolizable lysine plus methionine). The 4 treatments were analyzed as a completely randomized design with a 2 by 2 factorial arrangement (6 pens/diet). In trial 2, all pelleted diets (19% crude protein) were fed. Diets were based on soybean hulls, wheat middlings, or corn, which contained increasing concentrations of starch (13, 27, and 42% starch and 42, 23, and 16% NDF, respectively; 8 pens/diet). Contrast statements were constructed to separate differences in the means (soybean hulls plus wheat middlings vs. corn; soybean hulls vs. wheat middlings). In trial 1, intake of organic matter (OM) did not differ. Digestibility of OM was greater in calves fed high- versus low starch-diets. Digestibility of NDF and starch were less in calves fed the high- versus low-starch diets. Calf ADG and hip width change were greater for high- versus low-starch diets. Source of protein did not influence digestibility or ADG. In trial 2, intake of OM was not different. Digestibility of OM was greater in calves fed corn versus other diets. Digestibility of NDF was greater for calves fed soybean hulls versus wheat middlings. Starch digestibility was not different among treatments. Calf ADG and hip width change were greater in calves fed corn versus other diets. High-starch diets were more digestible and supported more growth in 2- to 4-mo-old dairy calves than replacing starch with digestible fiber. Manipulating metabolizable protein compared with a control diet that was predominately corn and soybean meal did not alter growth or digestibility. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Ethics, Law and Professional Issues Gallagher Ann and Hodge Sue Ethics, Law and Professional Issues 192pp £20.99 Palgrave Macmillan 9780230279940 0230279945 [Formula: see text].

PubMed

2014-10-01

THE EDITORS provide a sound introduction to ethics, law and professional issues in health care. Scenarios before each chapter help the reader to digest and comprehend the information. My only criticism is that it is not directly relevant to nursing alone. Although there is some benefit in being aware of how other practitioners may be affected by these issues, another book aimed at nurses would be more appropriate. Later chapters about responding to unprofessional practice and promoting professional healthcare practice may be of more interest to nursing students and recently qualified healthcare professionals.

Is non-host pollen suitable for generalist bumblebees?

PubMed

Vanderplanck, Maryse; Decleves, Sylvain; Roger, Nathalie; Decroo, Corentin; Caulier, Guillaume; Glauser, Gaetan; Gerbaux, Pascal; Lognay, Georges; Richel, Aurore; Escaravage, Nathalie; Michez, Denis

2018-04-01

Current evidence suggests that pollen is both chemically and structurally protected. Despite increasing interest in studying bee-flower networks, the constraints for bee development related to pollen nutritional content, toxicity and digestibility as well as their role in the shaping of bee-flower interactions have been poorly studied. In this study we combined bioassays of the generalist bee Bombus terrestris on pollen of Cirsium, Trifolium, Salix, and Cistus genera with an assessment of nutritional content, toxicity, and digestibility of pollen. Microcolonies showed significant differences in their development, non-host pollen of Cirsium being the most unfavorable. This pollen was characterized by the presence of quite rare δ7-sterols and a low digestibility. Cirsium consumption seemed increase syrup collection, which is probably related to a detoxification mixing behavior. These results strongly suggest that pollen traits may act as drivers of plant selection by bees and partly explain why Asteraceae pollen is rare in bee generalist diet. © 2016 Institute of Zoology, Chinese Academy of Sciences.

Ethical Issues and the Life Sciences. Test Edition. AAAS Study Guides on Contemporary Problems.

ERIC Educational Resources Information Center

Kieffer, George H.

This is one of several study guides on contemporary problems produced by the American Association for the Advancement of Science with support of the National Science Foundation. This study guide on Ethical Issues and the Life Sciences includes the following sections: (1) Introduction; (2) The Search for an Ethic; (3) Biomedical Issues including…

Digestate and ash as alternatives to conventional fertilisers: Benefits and threats to soil biota

NASA Astrophysics Data System (ADS)

Marshall, Rachel; Lag-Brotons, Alfonso J.; Herbert, Ben; Hurst, Lois; Ostle, Nick; Dodd, Ian C.; Quinton, John; Surridge, Ben; Aiouache, Farid; Semple, Kirk T.

2017-04-01

Recovering energy and nutrients from waste offers opportunities to tackle issues of energy and food security whilst simultaneously improving waste management. Waste materials from the bioenergy industry potentially contain valuable resources for use in agriculture and there is growing evidence to suggest that the use of digestate, from anaerobic digestion, and biomass ash from incineration processes could contribute to improving soil health and nutrition. The work presented here is part of the Adding Value to Ash and Digestate (AVAnD) project which looks at the impacts of digestate and ash blends on soil fertility, crop yields and soil health. Whilst increased crop productivity is one of the essential indicators of the success of these alternative soil amendments; it is important that the impacts on soil biological function is understood. Field and lab experiments were conducted with a number of different fertiliser treatments, including conventional fertiliser (urea and superphosphate), digestate from two contrasting feedstocks, ash material and ash-digestate blends. Looking across different biological scales from soil microbe to soil macro-fauna, this work examines the benefits and threats to soil biota arising from the use of ash-digestate fertilisers in agriculture. Measurements of microbial respiration and biomass (by chloroform fumigation) and community composition (by phospholipid fatty acid analysis) were made at different timescales (days/weeks). Data from these studies demonstrates that none of the soil amendments decreased microbial activity or biomass in the short term (t= 1 month). Additions of both conventional fertilisers and the fertilisers derived from waste stimulated microbial activity with significantly higher respiration observed from the digestate based treatments. Digestate-based treatments also resulted in higher soil microbial biomass and differential effects were observed between digestate amendments with and without ash. These results will be discussed in the context of microbial community change in response to the amendments. At the macro-fauna scale, effects of amendments on earthworm (Eisenia fetida and Lumbricus terrestris) health were assessed using 14 day toxicity assays (4 application rates between 85-340 kgN.ha-1) and with 48 hour avoidance tests. In general, the addition of digestate-based fertilisers resulted in no observable toxic effects and earthworms did not significantly avoid these materials when compared to a conventional fertiliser. However, earthworms mortality was observed with one of the ash-digestate blends applied at 340 kgN.ha-1, potentially linked to changes in soil pH and elements speciation .It is therefore crucial that the effects of the amendments on soil properties, and the implications this has for soil communities at all scales, is understood to ensure sustainable soil management in agriculture.

Bullying. ERIC/CASS Digest.

ERIC Educational Resources Information Center

Coy, Doris Rhea

Nearly 160,000 students skip school each day because of intimidation by their peers. Bullying has been a persistent problem that, with the heightened attention to school violence, has been recently recognized as a pervasive issue needing attention. Bullying can take many forms; racial discrimination and sexual harassment are examples of abuse…

The College, the Constitution, and the Consumer Student. ERIC Digest.

ERIC Educational Resources Information Center

Hendrickson, Robert M.; Gibbs, Annette

Recent legal developments concerning college students and colleges and universities are summarized, with a focus on constitutional issues related to the rights of students to organize, the collection and allocation of mandatory student activity fees, and the protection of freedom of speech regarding commercial enterprises. The status of…

The American Indian Digest.

ERIC Educational Resources Information Center

Russell, George

This guide provides a basic source of historical and contemporary Indian information from an American Indian perspective and includes study questions at the end of each section. The primary function of this guide is to be a quick-study reference handbook. Basic questions essential to understanding current problems and issues of American Indians…

Computer Virus Bibliography, 1988-1989.

ERIC Educational Resources Information Center

Bologna, Jack, Comp.

This bibliography lists 14 books, 154 journal articles, 34 newspaper articles, and 3 research papers published during 1988-1989 on the subject of computer viruses, software protection and 'cures', virus hackers, and other related issues. Some of the sources listed include Computers and Security, Computer Security Digest, PC Week, Time, the New…

A Learning Disabilities Digest for Literacy Providers.

ERIC Educational Resources Information Center

Stewart, Arlene C.; Lillie, Pat

The purpose of this booklet is to provide literacy instructors and tutors with information on adults with learning disabilities and their needs within literacy programs. It defines learning disabilities and describes characteristics of adults with learning disabilities, emphasizing that, for tutors, the issue is how to determine whether the…

ACHP | Federal Historic Preservation Case Law, 1966-2000

Science.gov Websites

of cases from 1996 to 2000. Federal Historic Preservation Case Law, 1966-2000 features an essay on authorities, and procedural issues in litigating preservation cases. It continues with 158 chronologically arranged digests of cases decided in Federal courts since 1966. Extensive footnotes, tables, and a

Inclusive Adult Learning Environments. ERIC Digest No. 162.

ERIC Educational Resources Information Center

Imel, Susan

Adult educators are recognizing that factors in the learning environment related to psychological, social, and cultural conditions exert a powerful influence on learners' growth and development. Current discussions on learning environments have broadened to include the need to confront issues of sexism and racism, interlocking systems of power and…

Folate Metabolism and the Risk of Down Syndrome

ERIC Educational Resources Information Center

Patterson, David

2008-01-01

Folate is an important vitamin that contributes to cell division and growth and is therefore of particular importance during infancy and pregnancy. Folate deficiency has been associated with slowed growth, anaemia, weight loss, digestive disorders and some behavioural issues. Adequate folate intake around the time of conception and early pregnancy…

Safe Science: Be Protected!

ERIC Educational Resources Information Center

Roy, Ken

2006-01-01

Science education is a changing landscape. Changes over the past ten years alone have been both evolutionary and revolutionary--Science Education Standards, new required assessments, science teacher certification issues, science teacher shortages and retirements, molecular approach to Biology, etc. These changes and issues range from…

Clinical value of octamer-binding transcription factor 4 as a prognostic marker in patients with digestive system cancers: A systematic review and meta-analysis.

PubMed

Chen, Zhiqiang; Zhang, Long; Zhu, Qin; Wang, Xiaowei; Wu, Jindao; Wang, Xuehao

2017-03-01

The role of octamer-binding transcription factor 4 (Oct4) has been implicated in the clinical prognosis of various kinds of digestive system cancers, but the results remain controversial. The purpose of this meta-analysis is to assess the potential role of Oct4 as a prognostic marker in digestive system tumors. Relevant articles were retrieved from Pubmed, Web of Science, and Cochrane Library up to July 2016. The software Stata 12.0 was used to analyze the outcomes, including overall survival (OS), disease-free survival, recurrence-free survival, and clinicopathological characteristics. A total of 13 eligible studies with 1538 patients were included. Elevated Oct4 expression was significantly associated with poor OS (pooled hazard ratio [HR] = 2.183, 95% confidence interval [CI]: 1.824-2.612), disease-free survival (pooled HR = 1.973, 95% CI: 1.538-2.532), and recurrence-free survival (pooled HR = 2.209, 95% CI: 1.461-3.338) of digestive system malignancies. Subgroup analyses showed that cancer type, sample size, study quality, and laboratory detection method did not alter the significant prognostic value of Oct4. Additionally, Oct4 expression was found to be an independent predictive factor for OS (HR = 2.068, 95% CI: 1.633-2.619). No significant association was found between Oct4 and clinicopathological features of digestive system malignancies. This study provided evidence of Oct4 and/or its closely related homolog protein as a predictive factor for patients with digestive system cancers. More large-scale clinical studies on the prognostic value of Oct4 are warranted. © 2016 Journal of Gastroenterology and Hepatology Foundation and John Wiley & Sons Australia, Ltd.

Prognostic value of long noncoding RNA HOTAIR in digestive system malignancies.

PubMed

Wang, Shuai; Wang, Zhou

2015-07-01

HOX transcript antisense intergenic RNA (HOTAIR), a well-known long noncoding RNA, has been found to play significant roles in several tumors. However, the clinical application value of HOTAIR in digestive system malignancies remains to be clarified. We aimed to explore comprehensively the potential role of HOTAIR as a prognostic indicator in digestive system malignancies. Systematic search was performed in Pubmed, Embase, Cochrane Library, and Web of Science until July 5, 2014. A quantitative meta-analysis was conducted with standard statistical methods for eligible papers on the prognostic value of HOTAIR in digestive system cancers. A total of 1059 patients from 13 studies were included in the meta-analysis. A significant association was found between HOTAIR abundance and poor overall survival (OS) of patients with digestive system malignancies, with pooled hazard ratio (HR) of 2.587 (95% confidence interval [CI]: 2.054-3.259, P < 0.001). By combining HRs from Cox multivariate analyses, we found HOTAIR was an independent prognostic factor for OS without obvious heterogeneity (HR: 2.405, 95% CI: 1.883-3.0722, P < 0.001). Subgroup analysis showed that tumor type, histology type, region, publication year, sample size, and quality score did not alter the predictive value of HOTAIR as an independent factor for survival. Meta-regression and sensitivity analysis both suggested the reliability of our findings. A slight publication bias was observed. After adjustment by nonparametric "trim-and-fill" method, the corrected HRs had no significant change. HOTAIR could be exploited as a novel prognostic biomarker for patients with digestive system malignancies. © 2015 Journal of Gastroenterology and Hepatology Foundation and Wiley Publishing Asia Pty Ltd.

Long non-coding RNA XIST predicts worse prognosis in digestive system tumors: a systemic review and meta-analysis.

PubMed

Liu, Xuefang; Ming, Xinliang; Jing, Wei; Luo, Ping; Li, Nandi; Zhu, Man; Yu, Mingxia; Liang, Chunzi; Tu, Jiancheng

2018-05-11

Aims: Increasing studies are indicating that long non-coding RNA X-inactive specific transcript (XIST) is associated with the prognosis of cancer patients. However, the results have been disputed. Therefore, we aimed to further explore the prognostic value and clinical significance of XIST in various types of cancers. Then, we focused our research on the comparison of the predictive value of XIST between digestive system tumors and non-digestive system tumors. Methods: We performed a systematic search by looking up PubMed, Embase, Cochrane Library, Web of Science, and Medline (up to January 3, 2018). Fifteen studies which matched to our inclusion criteria with a total of 920 patients for overall survival and 867 patients for clinicopathological characteristics were included in this meta-analysis. Pooled hazard ratios (HR) and odds ratios (ORs) with their corresponding 95% confidence intervals (95% CIs) were calculated to summarize the effects. Results: Our results suggested that high expression levels of XIST were associated with unfavorable overall survival in cancer patients (pooled HR=1.81, 95% CI: 1.45-2.26). Additionally, we found that XIST was more valuable in digestive system tumors (pooled HR=2.24, 95% CI: 1.73-2.92) than in non-digestive system tumors (pooled HR=1.22, 95% CI: 0.60-2.45). Additionally, elevated expression levels of XIST were connection with distant metastasis and tumor stage. Conclusion: XIST was correlated with poor prognosis, which suggested that XIST might serve as a novel predictive biomarker for cancer patients, especially for patients of digestive system tumors. ©2018 The Author(s).

Effects of blend of canola oil and palm oil on nutrient intake and digestibility, growth performance, rumen fermentation and fatty acids in goats.

PubMed

Adeyemi, Kazeem Dauda; Sazili, Awis Qurni; Ebrahimi, Mahdi; Samsudin, Anjas Asmara; Alimon, Abd Rasak; Karim, Roselina; Karsani, Saiful Anuar; Sabow, Azad Behnan

2016-09-01

The study examined the effects of blend of 80% canola oil and 20% palm oil (BCPO) on nutrient intake and digestibility, growth performance, rumen fermentation and fatty acids (FA) in goats. Twenty-four Boer bucks were randomly assigned to diets containing 0, 4 and 8% BCPO on a dry matter basis, fed for 100 days and slaughtered. Diet did not affect feed efficiency, growth performance, intake and digestibility of all nutrients except ether extract. Intakes and digestibilities of ether extract, unsaturated fatty acids (FA) and total FA were higher (P < 0.05) while digestibility of C18:0 was lower (P < 0.05) in oil-fed goats than the control goats. Total volatile FA, acetate, butyrate, acetate/propionate ratio and methane decreased (P < 0.05) with increasing BCPO but propionate, NH3 -N and rumen pH did not differ between diets. Ruminal concentration of C18:0, n-3 FA and total FA increased (P < 0.05) while C12:0, C14:0, C15:0 and n-6 FA decreased with increasing BCPO. Analysis of the FA composition of Triceps brachii muscle showed that concentrations of C16:0, C14:0 and C18:2n-6 were lower (P < 0.05) while C18:1n-9, C18:3n-3 and C20:5n-3 were higher in oil-fed goats compared with control goats. Dietary BCPO altered muscle lipids without having detrimental effects on nutrient intake and digestibility and growth performance in goats. © 2015 Japanese Society of Animal Science.

Secondary Education Systemic Issues: Addressing Possible Contributors to a Leak in the Science Education Pipeline and Potential Solutions

ERIC Educational Resources Information Center

Young, Hollie

2005-01-01

To maintain the legacy of cutting edge scientific innovation in the United States our country must address the many pressing issues facing science education today. One of the most important issues relating to science education is the under-representation of African Americans and Hispanics in the science, technology, and engineering workforce.…

Associations Between Attitudes Towards Science and Children's Evaluation of Information About Socioscientific Issues

NASA Astrophysics Data System (ADS)

Xiao, Sihan; Sandoval, William A.

2017-05-01

Science educators are typically dismayed by the failure of students to use relevant scientific knowledge when reasoning about socioscientific issues. Except for the well-documented association between having more knowledge about a topic and a tendency to use that knowledge, the influences on students' evaluation of information in socioscientific issues are not well understood. This study presents an initial investigation into the associations between upper elementary students' attitudes towards science and their evaluation of information about a socioscientific issue. We surveyed the science attitudes of 49 sixth grade students and then asked them to evaluate information about a socioscientific issue (alternative energy use). Positive attitudes were associated with a more scientific approach to evaluating information in the task. When trying to make judgments, students with generally positive attitudes towards science were more likely to attend to scientific information than other sources. Scientific information, nonetheless, served a variety of socially oriented goals in students' evaluations. These findings warrant further research on the relationship between science attitudes and reasoning about socioscientific issues and support the argument for connecting school science more clearly with everyday concerns.

Utilization of urban sewage sludge: Chinese perspectives.

PubMed

Chen, H; Yan, S-H; Ye, Z-L; Meng, H-J; Zhu, Y-G

2012-06-01

Urbanization and industrialization in China has resulted in a dramatic increase in the volume of wastewater and sewage sludge produced from wastewater treatment plants. Problems associated with sewage sludge have attracted increasing attention from the public and urban planners. How to manage sludge in an economically and environmentally acceptable manner is one of the critical issues that modern societies are facing. Sludge treatment systems consist of thickening, dewatering, and several different alternative main treatments (anaerobic digestion, aerobic digestion, drying, composting, and incineration). Agricultural application, landfill, and incineration are the principal disposal methods for sewage sludge in China. However, sewage sludge disposal in the future should focus on resource recovery, reducing environmental impacts and saving economic costs. The reuse of biosolids in all scenarios can be environmentally beneficial and cost-effective. Anaerobic digestion followed by land application is the preferable options due to low economic and energy costs and material reuse. It is necessary to formulate a standard suitable for the utilization of sewage sludge in China.

Implementation of the NCSS Guidelines for Teaching Science-Related Social Issues: Exemplar Lessons.

ERIC Educational Resources Information Center

Otto, Robert A., Ed.

This document contains the Guidelines for Teaching Science-Related Social Issues adopted in 1982 by the National Council for the Social Studies and 10 examplar lessons each keyed to particular guidelines and drawing upon contemporary issues. The premise upon which the guidelines are based is that science is a social issue and that the examination…

"It's Still Science but Not Like Normal Science": Girls' Responses to the Teaching of Socio-Scientific Issues

ERIC Educational Resources Information Center

Morris, Helen

2014-01-01

Socio-scientific issues, which are often controversial, involve the use of science and are of interest to society, raising ethical and moral dilemmas. Examples of these issues could include genetic technology or air pollution. Following a curriculum reform in England in 2006, socioscientific issues now have a heightened presence in the 14-16…

Effect of calcium on fatty acid bioaccessibility during in vitro digestion of Cheddar-type cheeses prepared with different milk fat fractions.

PubMed

Ayala-Bribiesca, Erik; Turgeon, Sylvie L; Britten, Michel

2017-04-01

Calcium plays an important role in intestinal lipid digestion by increasing the lipolysis rate, but also limits fatty acid bioaccessibility by producing insoluble Ca soaps with long-chain fatty acids at intestinal pH conditions. The aim of this study was to better understand the effect of Ca on the bioaccessibility of milk fat from Cheddar-type cheeses. Three anhydrous milk fats (AMF) with different fatty acid profiles (olein, stearin, or control AMF) were used to prepare Cheddar-type cheeses, which were then enriched or not with Ca using CaCl 2 during the salting step. The cheeses were digested in vitro, and their disintegration and lipolysis rates were monitored during the process. At the end of digestion, lipids were extracted under neutral and acidic pH conditions to compare free fatty acids under intestinal conditions in relation to total fatty acids released during the digestion process. The cheeses prepared with the stearin (the AMF with the highest ratio of long-chain fatty acids) were more resistant to disintegration than the other cheeses, owing to the high melting temperature of that AMF. The Ca-enriched cheeses had faster lipolysis rates than the regular Ca cheeses. Chromatographic analysis of the digestion products showed that Ca interacted with long-chain fatty acids, producing Ca soaps, whereas no interaction with shorter fatty acids was detected. Although higher Ca levels resulted in faster lipolysis rates, driven by the depletion of reaction products as Ca soaps, such insoluble compounds are expected to reduce the bioavailability of fatty acids by hindering their absorption. These effects on lipid digestion and absorption are of interest for the design of food matrices for the controlled release of fat-soluble nutrients or bioactive molecules. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Culture clash: alcohol marketing and public health aspirations.

PubMed

Munro, Geoffrey; de Wever, Johanna

2008-03-01

It is of no coincidence that a number of recent Harm Reduction Digests have addressed the issue of the reduction of alcohol-related harm. Despite the dominant focus on illicit drug use in the popular discourse, alcohol remains Australia's number one drug problem, as it is in many other developed countries. In this Digest Munro and de Wever use the 'four Ps' of marketing: product, price, place and promotion, to critique the two decades industry self-regulation of alcohol marketing. They conclude that if we are going to develop policies which effectively change Australian drinking culture to reduce alcohol-related harm, we need first to accept that the alcohol industry and the health field have separate and conflicting interests.

Production and energetic use of biogas from energy crops and wastes in Germany.

PubMed

Weiland, Peter

2003-01-01

The production of biogas for reducing fossil CO2 emissions is one of the key strategic issues of the German government and has resulted in the development of new process techniques and new technologies for the energetic use of biogas. Progress has been made in cultivating energy crops for biogas production, in using new reactor systems for anaerobic digestion, and in applying more efficient technologies for combined heat and power production. Recently, integration of fuel cells within the anaerobic digestion process was started, and new technologies for biogas upgrading and conversion to hydrogen were tested. This article describes the trends in Germany for achieving more efficient energy production.

Science Education Attuned to Social Issues: Challenge for the '80s.

ERIC Educational Resources Information Center

Yager, Robert E.; And Others

1981-01-01

Provides rationale for interdisciplinary science curricula which emphasize decision-making skills. Includes examples of interdisciplinary curricula using an issue-centered approach: Unified Science and Mathematics for Elementary School (USMES), Health Activities Program (HAP), Human Sciences Program (HSP), Individualized Science Instructional…

Quantification and characterization of microplastics in blue mussels (Mytilus edulis): protocol setup and preliminary data on the contamination of the French Atlantic coast.

PubMed

Phuong, Nam Ngoc; Zalouk-Vergnoux, Aurore; Kamari, Abderrahmane; Mouneyrac, Catherine; Amiard, Frederic; Poirier, Laurence; Lagarde, Fabienne

2018-03-01

Microplastics (MPs) constitute a main environmental issue due to their threat to marine organisms and so far to humans. The lack of a fast standard protocol in MP isolation and identification from living organisms bring to challenge for the science. In this paper, an optimized protocol using potassium hydroxide 10% (KOH 10%; m/v) for digestion of mussel soft tissues (Mytilus edulis) and multi-steps of sedimentation has been developed. Efficiency higher than 99.9% of organic and mineral matter elimination was shown by application on mussels sampled on the French Atlantic coast. The identification of MPs was performed by FTIR microscopy straight on the filter and the whole analysis can be compatible with a routine goal. Fourteen MPs of four different chemical natures were found and identified in 5 pools of 3 sampled mussels. Their size ranged from 30 to 200 μm. Further investigations are now needed to evaluate the potential risk of such particles within this marine bivalve species and other filter feeders.

Gender Equity and the Year 2000. WEEA Digest.

ERIC Educational Resources Information Center

Education Development Center, Inc., Newton, MA.

During the past 17 years, the Women's Educational Equity Act (WEEA) program has accomplished the following: funded programs to open math, science, and technology courses and careers to women and girls; helped females gain access to nontraditional vocational education; funded projects to eliminate bias against females in school and the workplace;…

Life and Work in a Technological Society. ERIC Digest No. 147.

ERIC Educational Resources Information Center

Kerka, Sandra

Technology is more than applied science. It is the processes and products by which humans have coped with and changed their environment throughout history. People have always lived and worked in a "technological society." Never before, however, has technological change been so rapid or broad in scope. The concept of an "educated…

Purification of Marek's disease virus DNA for 454 pyrosequencing using micrococcal nuclease digestion and polyethylene glycol precipitation

USDA-ARS?s Scientific Manuscript database

Marek’s disease virus (MDV-1) is a cell-associated alphaherpesvirus that induces rapid-onset T-cell lymphomas in poultry. The genomes of 6 strains have been sequenced using both Sanger didoxy sequencing and 454 Life Science pyrosequencing. These genomes largely represent cell culture adapted strains...

Women and Minorities in High-Tech Careers. ERIC Digest No. 226.

ERIC Educational Resources Information Center

Brown, Bettina Lankard

Women and minorities are underrepresented in technology-related careers for many reasons, including lack of access, level of math and science achievement, and emotional and social attitudes about computer capabilities. Schools and teachers can use the following strategies to attract women and minorities to high-tech careers and prepare them for…

A novel solid digestate-derived biochar-Cu NP composite activating H2O2 system for simultaneous adsorption and degradation of tetracycline.

PubMed

Fu, Dun; Chen, Zheng; Xia, Dong; Shen, Liang; Wang, Yuanpeng; Li, Qingbiao

2017-02-01

Solid digestate, a by-product of anaerobic digestion systems, has led to a range of environmental issues. In the present study, a novel composite based on a solid digestate-biochar-Cu NP composite was synthesized for tetracycline removal from an aqueous medium. The removal efficiency values for tetracycline (200 mg L -1 ) were 31.5% and 97.8%, respectively, by the biochar-Cu NP composite (0.5 g L -1 ) in the absence and presence of hydrogen peroxide (H 2 O 2 , 20 mM) within 6 h of reaction time. The possible degradation pathway of tetracycline was investigated using liquid chromatography-mass spectrometry. The desorption experiment results suggested that no significant concentration of tetracycline was detected on the composite after the reaction, but a small amount of intermediates in terms of total organic carbon (TOC) accounting for 3.1%, and 23.3% of the end-product NH 4 + was adsorbed onto the biochar sheets. The dispersive Cu NPs on the biochar resulted in an increase in the surface area and pore volume of the biochar-Cu NP composite, which enhanced tetracycline adsorption as well as the degradation efficiency. Relative tetracycline removal mechanisms were dominantly ascribed to ·OH generation from the Cu(II)/Cu(I) redox reaction with H 2 O 2 and the electron-transfer process of free radicals (FRs) in biochar. The proposed approach serves dual purposes of waste digestate reuse and treatment of antibiotic pollutants. This study highlights the activation of H 2 O 2 by the dispersive Cu NPs coupling with biochar derived from a waste solid digestate for tetracycline treatment. Copyright © 2016. Published by Elsevier Ltd.

Nutrient removal and biogas upgrading by integrating freshwater algae cultivation with piggery anaerobic digestate liquid treatment.

PubMed

Xu, Jie; Zhao, Yongjun; Zhao, Guohua; Zhang, Hui

2015-08-01

An integrated approach that combined freshwater microalgae Scenedesmus obliquus (FACHB-31) cultivation with piggery anaerobic digestate liquid treatment was investigated in this study. The characteristics of algal growth, biogas production, and nutrient removal were examined using photobioreactor bags (PBRbs) to cultivate S. obliquus (FACHB-31) in digestate with various digestate dilutions (the concentration levels of 3200, 2200, 1600, 1200, 800, and 400 mg L(-1) chemical oxygen demand (COD)) during 7-day period. The effects of the level of pollutants on nutrient removal efficiency and CO2 removal process were investigated to select the optimum system for effectively upgrade biogas and simultaneously reduce the nutrient content in digestate. The treatment performance displayed that average removal rates of COD, total nitrogen (TN), total phosphorous (TP), and CO2 were 61.58-75.29, 58.39-74.63, 70.09-88.79, and 54.26-73.81 %, respectively. All the strains grew well under any the dilution treatments. With increased initial nutrient concentration to a certain range, the CO4 content (v/v) of raw biogas increased. Differences in the biogas enrichment of S. obliquus (FACHB-31) in all treatments mainly resulted from variations in biomass productivity and CO2 uptake. Notably, the diluted digestate sample of 1600 mg L(-1) COD provided an optimal nutrient concentration for S. obliquus (FACHB-31) cultivation, where the advantageous nutrient and CO2 removals, as well as the highest productivities of biomass and biogas upgrading, were revealed. Results showed that microalgal biomass production offered real opportunities to address issues such as CO2 sequestration, wastewater treatment, and biogas production.

Effect of corn silage hybrids differing in starch and neutral detergent fiber digestibility on lactation performance and total-tract nutrient digestibility by dairy cows.

PubMed

Ferraretto, L F; Fonseca, A C; Sniffen, C J; Formigoni, A; Shaver, R D

2015-01-01

Selection for hybrids with greater starch and NDF digestibility may be beneficial for dairy producers. The objective of this study was to determine the effect of feeding a TMR containing a floury-leafy corn silage hybrid (LFY) compared with a brown midrib corn silage hybrid (BMR) for intake, lactation performance, and total-tract nutrient digestibility in dairy cows. Ninety-six multiparous Holstein cows, 105±31d in milk at trial initiation, were stratified by DIM and randomly assigned to 12 pens of 8 cows each. Pens were randomly assigned to 1 of 2 treatments, BMR or LFY, in a completely randomized design; a 2-wk covariate period with cows fed a common diet followed by a 14-wk treatment period with cows fed their assigned treatment diet. Starch digestibilities, in situ, in vitro, and in vivo, were greater for LFY compared with BMR; the opposite was observed for NDF digestibility. Cows fed BMR consumed 1.7kg/d more dry matter than LFY. Although, actual-, energy-, and solids-corrected milk yields were greater for BMR than LFY, feed conversions (kg of milk or component-corrected milk per kg of DMI) did not differ. Fat-corrected milk and milk fat yield were similar, as milk fat content was greater for cows fed LFY (4.05%) than BMR (3.83%). Cows fed BMR had lower milk urea nitrogen concentration, but greater milk protein and lactose yields compared with LFY. Body weight change and condition score were unaffected by treatment. Total-tract starch digestibility was greater for cows fed the LFY corn silage; however, dry matter intake and milk and protein yields were greater for cows fed the BMR corn silage. Although total-tract starch digestibility was greater for cows fed the LFY corn silage, feed efficiency was not affected by hybrid type due to greater dry matter intake and milk and protein yields by cows fed the BMR corn silage. Copyright © 2015 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Phosphorus and nitrogen utilization responses of broiler chickens to dietary crude protein and phosphorus levels.

PubMed

Xue, P C; Ajuwon, K M; Adeola, O

2016-11-01

A study was conducted to investigate the effect of dietary CP levels on pre-cecal digestibility and total tract retention of phosphorus (P) in broiler chickens. A total of 384 14-day-old male broiler chickens were used in a randomized complete block design with 8 treatments and 6 replicates per treatment in a 7-d experimental period. There were 8 corn-soybean meal-based diets in a 2 × 4 factorial arrangement, which included 2 CP levels (10.7 or 21.5%) and 4 apparent total tract digestible P (ATTDP) levels (0.18, 0.32, 0.45, or 0.59%). Soybean meal and mono-calcium phosphate were used to adjust the CP and ATTDP levels, respectively. At the end of the experiment, BW was recorded and digesta samples from the distal two-thirds of ileum and mucosa samples from the middle of the jejunum were collected. Total RNA also was isolated from mucosa samples and used for real-time PCR to determine the gene expression of sodium-phosphate co-transporter IIb (NaPi-IIb). Results showed that low dietary CP level limited the growth performance (P < 0.01), pre-cecal digestion, and total tract retention of P (P < 0.01), and NaPi-IIb gene expression (P < 0.05), compared with high dietary CP. Pre-cecal digestion and total tract retention of P (g/kg DM intake) linearly increased (P < 0.01) with increasing ATTDP levels in both low and high CP groups. In conclusion, this study suggests an interrelationship between N and P digestion such that CP deficiency decreased the growth performance of birds consequently reducing pre-cecal P digestion in broiler chickens. Total tract retention of CP and P are linked with each other and body tissue growth may be a driver of the deposition of these 2 nutrients. Supplementation of protein may be necessary in diets during P digestibility studies to ameliorate an effect of protein deficiency on P digestion and retention. © 2016 Poultry Science Association Inc.

Influence of stewing time on the texture, ultrastructure and in vitro digestibility of meat from the yellow-feathered chicken breed.

PubMed

Qi, Jun; Li, Xiao; Zhang, Wenwen; Wang, Huhu; Zhou, Guanghong; Xu, Xinglian

2018-02-01

This study assessed the influence of stewing (1, 2 or 3 h) on the texture, ultrastructure and in vitro digestibility of meat from the yellow-feathered chicken, which is a popular broiler chicken in Asia. Results indicated that longer stewing considerably increased cooking loss of the chicken carcass and tenderness of thigh meat. After 3 h of stewing, protein digestibility decreased from 90.5% to 80.3% and fiber diameter decreased by 8.63 μm. The shear force value of breast meat decreased from 32.34 N at 1 h to 10.29 N at 2 h, and then increased to 39.98 N at 3 h. The texture profile of breast meat remarkably decreased during stewing. Moreover, increased stewing time induced longitudinal and transversal shrinkage of muscle fibers and the degradation of the myosin heavy chain. These findings suggested that prolonged stewing (3 h) resulted in decreased meat qualities, based on the changes in cooking loss, digestibility and texture profile, but that stewing for 2 h increased thigh and breast tenderness. Producers could utilize this information to stew yellow-feathered chicken meat with desirable qualities. © 2017 Japanese Society of Animal Science.

Science as an Ideal: Teachers' Orientations to Science and Science Education Reform

ERIC Educational Resources Information Center

Witz, Klaus G.; Lee, Hyunju

2009-01-01

Two policy trends have characterized US science education in the last two decades: a strong movement to examine issues of science in society, and widespread adoption of state standards mandating curriculum courses related to science, technology and society, scientific literacy, and socio-scientific issues. However, these changes have not found an…

On the Relationship between "Belief" and "Acceptance" of Evolution as Goals of Evolution Education: Twelve Years Later

ERIC Educational Resources Information Center

Smith, Mike U.; Siegel, Harvey

2016-01-01

The issue of the proper goals of science education and science teacher education have been a focus of the science education and philosophy of science communities in recent years. More particularly, the issue of whether belief/acceptance of evolution and/or understanding are the appropriate goals for evolution educators and the issue of the precise…

Engaging Students in Modeling as an Epistemic Practice of Science: An Introduction to the Special Issue of the "Journal of Science Education and Technology"

ERIC Educational Resources Information Center

Campbell, Todd; Oh, Phil Seok

2015-01-01

This article provides an introduction for the special issue of the "Journal of Science Education and Technology" focused on science teaching and learning with models. The article provides initial framing for questions that guided the special issue. Additionally, based on our careful review of each of these articles, some discussion of…

Science, Technology, and the Issues of the Eighties: Policy Outlook. Westview Special Studies in Science, Technology, and Public Policy/Society.

ERIC Educational Resources Information Center

Teich, Albert H., Ed.; Thornton, Ray, Ed.

Recognizing that science and technology (S/T) have become increasingly relevant to important public policy issues, Congress has mandated the periodic preparation of a "Five Year Outlook for Science and Technology" to help U.S. policymakers anticipate and deal with these issues more effectively. This book, the result of a study conducted by the…

Microorganism-regulated mechanisms of temperature effects on the performance of anaerobic digestion.

PubMed

Lin, Qiang; He, Guihua; Rui, Junpeng; Fang, Xiaoyu; Tao, Yong; Li, Jiabao; Li, Xiangzhen

2016-06-03

Temperature is an important factor determining the performance and stability of the anaerobic digestion process. However, the microorganism-regulated mechanisms of temperature effects on the performance of anaerobic digestion systems remain further elusive. To address this issue, we investigated the changes in composition, diversity and activities of microbial communities under temperature gradient from 25 to 55 °C using 16S rRNA gene amplicon sequencing approach based on genomic DNA (refer to as "16S rDNA") and total RNA (refer to as "16S rRNA"). Microbial community structure and activities changed dramatically along the temperature gradient, which corresponded to the variations in digestion performance (e.g., daily CH4 production, total biogas production and volatile fatty acids concentration). The ratios of 16S rRNA to 16S rDNA of microbial taxa, as an indicator of the potentially relative activities in situ, and whole activities of microbial community assessed by the similarity between microbial community based on 16S rDNA and rRNA, varied strongly along the temperature gradient, reflecting different metabolic activities. The daily CH4 production increased with temperature from 25 to 50 °C and declined at 55 °C. Among all the examined microbial properties, the whole activities of microbial community and alpha-diversity indices of both microbial communities and potentially relative activities showed highest correlations to the performance. The whole activities of microbial community and alpha-diversity indices of both microbial communities and potentially relative activities were sensitive indicators for the performance of anaerobic digestion systems under temperature gradient, while beta-diversity could predict functional differences. Microorganism-regulated mechanisms of temperature effects on anaerobic digestion performance were likely realized through increasing alpha-diversity of both microbial communities and potentially relative activities to supply more functional pathways and activities for metabolic network, and increasing the whole activities of microbial community, especially methanogenesis, to improve the strength and efficiency in anaerobic digestion process.

Confetti: A Multiprotease Map of the HeLa Proteome for Comprehensive Proteomics*

PubMed Central

Guo, Xiaofeng; Trudgian, David C.; Lemoff, Andrew; Yadavalli, Sivaramakrishna; Mirzaei, Hamid

2014-01-01

Bottom-up proteomics largely relies on tryptic peptides for protein identification and quantification. Tryptic digestion often provides limited coverage of protein sequence because of issues such as peptide length, ionization efficiency, and post-translational modification colocalization. Unfortunately, a region of interest in a protein, for example, because of proximity to an active site or the presence of important post-translational modifications, may not be covered by tryptic peptides. Detection limits, quantification accuracy, and isoform differentiation can also be improved with greater sequence coverage. Selected reaction monitoring (SRM) would also greatly benefit from being able to identify additional targetable sequences. In an attempt to improve protein sequence coverage and to target regions of proteins that do not generate useful tryptic peptides, we deployed a multiprotease strategy on the HeLa proteome. First, we used seven commercially available enzymes in single, double, and triple enzyme combinations. A total of 48 digests were performed. 5223 proteins were detected by analyzing the unfractionated cell lysate digest directly; with 42% mean sequence coverage. Additional strong-anion exchange fractionation of the most complementary digests permitted identification of over 3000 more proteins, with improved mean sequence coverage. We then constructed a web application (https://proteomics.swmed.edu/confetti) that allows the community to examine a target protein or protein isoform in order to discover the enzyme or combination of enzymes that would yield peptides spanning a certain region of interest in the sequence. Finally, we examined the use of nontryptic digests for SRM. From our strong-anion exchange fractionation data, we were able to identify three or more proteotypic SRM candidates within a single digest for 6056 genes. Surprisingly, in 25% of these cases the digest producing the most observable proteotypic peptides was neither trypsin nor Lys-C. SRM analysis of Asp-N versus tryptic peptides for eight proteins determined that Asp-N yielded higher signal in five of eight cases. PMID:24696503

Impact of STS Issue Oriented Instruction on Pre-Service Elementary Teachers' Views and Perceptions of Science, Technology, and Society

ERIC Educational Resources Information Center

Amirshokoohi, Aidin

2016-01-01

The purpose of the study was to investigate the impact of Science, Technology, Society (STS) issue oriented science methods course on pre-service teachers' views and perceptions toward STS issues and instruction as well as their levels of environmental literacy. The STS issue oriented curriculum was designed to help pre-service teachers improve…

Current codex guidelines for assessment of potential protein allergenicity.

PubMed

Ladics, G S

2008-10-01

A rigorous safety assessment process exists for GM crops. It includes evaluation of the introduced protein as well as the crop containing such protein with the goal of demonstrating the GM crop is "as-safe-as" non-transgenic crops in the food supply. One of the major issues for GM crops is the assessment of the expressed protein for allergenic potential. Currently, no single factor is recognized as an identifier for protein allergenicity. Therefore, a weight-of-evidence approach, which takes into account a variety of factors and approaches for an overall assessment of allergenic potential, is conducted [Codex Alimentarious Commission, 2003. Alinorm 03/34: Joint FAO/WHO Food Standard Programme, Codex Alimentarious Commission, Twenty-Fifth Session, Rome, Italy, 30 June-5 July, 2003. Appendix III, Guideline for the conduct of food safety assessment of foods derived from recombinant-DNA plants, and Appendix IV, Annex on the assessment of possible allergenicity, pp. 47-60]. This assessment is based on what is known about allergens, including the history of exposure and safety of the gene(s) source; protein structure (e.g., amino acid sequence identity to human allergens); stability to pepsin digestion in vitro [Thomas, K. et al., 2004. A multi-laboratory evaluation of a common in vitro pepsin digestion assay protocol used in assessing the safety of novel proteins. Regul. Toxicol. Pharmacol. 39, 87-98]; an estimate of exposure of the novel protein(s) to the gastrointestinal tract where absorption occurs (e.g., protein abundance in the crop, processing effects); and when appropriate, specific IgE binding studies or skin prick testing. Additional approaches may be considered (e.g., animal models; targeted sera screening) as the science evolves; however, such approaches have not been thoroughly evaluated or validated for predicting protein allergenicity.

News Focus: Presidential Candidates Give Views on Science and Technology.

ERIC Educational Resources Information Center

Chemical and Engineering News, 1984

1984-01-01

Presents the views of Ronald Reagan and Walter Mondale on various science issues. Major areas examined include: science policy goals; science education; adequate research and development funding; importance of research activities; role of science and technology in solving national problems; and other issues. (JN)

76 FR 66089 - Notice of Permit Modification Issued Under the Antarctic Conservation Act of 1978

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-25

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77 FR 64831 - Notice of Permits Issued Under the Antarctic Conservation Act of 1978

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-23

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77 FR 64831 - Notice of Permits Issued Under the Antarctic Conservation Act of 1978

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-23

... NATIONAL SCIENCE FOUNDATION Notice of Permits Issued Under the Antarctic Conservation Act of 1978 AGENCY: National Science Foundation. ACTION: Notice of a permit modification issued under the Antarctic Conservation Act of 1978, Public Law 95-541. SUMMARY: The National Science Foundation (NSF) is required to...

76 FR 67485 - Notice of Permit Modification Issued Under the Antarctic Conservation Act of 1978

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2011-11-01

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77 FR 50533 - Notice of Permits Issued Under the Antarctic Conservation Act of 1978

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2012-08-21

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76 FR 47611 - Notice of Permit Modification Issued Under the Antarctic Conservation Act of 1978

Federal Register 2010, 2011, 2012, 2013, 2014

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77 FR 35068 - Notice of Permits Issued Under the Antarctic Conservation Act of 1978

Federal Register 2010, 2011, 2012, 2013, 2014

2012-06-12

... NATIONAL SCIENCE FOUNDATION Notice of Permits Issued Under the Antarctic Conservation Act of 1978 AGENCY: National Science Foundation. ACTION: Notice of permits issued under the Antarctic Conservation of 1978, Public Law 95-541. SUMMARY: The National Science Foundation (NSF) is required to publish notice...

Organizing High School Biology Experiences around Contemporary Bioethical Issues: An STS Approach.

ERIC Educational Resources Information Center

Dass, Pradeep Maxwell

1997-01-01

The need for a citizenry capable of comprehending and tackling contemporary issues related to science and technology demands science education experiences that are fundamentally different from traditional experiences in school science. Argues that high school biology experiences organized around contemporary bioethical issues can meet this need.…

Measurement of true ileal calcium digestibility in meat and bone meal for broiler chickens using the direct method.

PubMed

Anwar, M N; Ravindran, V; Morel, P C H; Ravindran, G; Cowieson, A J

2016-01-01

The objective of the study that is presented herein was to determine the true ileal calcium (Ca) digestibility in meat and bone meal (MBM) for broiler chickens using the direct method. Four MBM samples (coded as MBM-1, MBM-2, MBM-3 and MBM-4) were obtained and analyzed for nutrient composition, particle size distribution and bone to soft tissue ratio. The Ca concentrations of MBM-1, MBM-2, MBM-3 and MBM-4 were determined to be 71, 118, 114 and 81 g/kg, respectively. The corresponding geometric mean particle diameters and bone to soft tissue ratios were 0.866, 0.622, 0.875 and 0.781 mm, and 1:1.49, 1:0.98, 1:0.92 and 1:1.35, respectively. Five experimental diets, including four diets with similar Ca concentration (8.3 g/kg) from each MBM and a Ca and phosphorus-free diet, were developed. Meat and bone meal served as the sole source of Ca in the MBM diets. Titanium dioxide (3 g/kg) was incorporated in all diets as an indigestible marker. Each experimental diet was randomly allotted to six replicate cages (eight birds per cage) and offered from d 28 to 31 post-hatch. Apparent ileal Ca digestibility was calculated by the indicator method and corrected for ileal endogenous Ca losses to determine the true ileal Ca digestibility. Ileal endogenous Ca losses were determined to be 88 mg/kg dry matter intake. True ileal Ca digestibility coefficients of MBM-1, MBM-2, MBM-3 and MBM-4 were determined to be 0.560, 0.446, 0.517 and 0.413, respectively. True Ca digestibility of MBM-1 was higher (P < 0.05) than MBM-2 and MBM-4 but similar (P > 0.05) to that of MBM-3. True Ca digestibility of MBM-2 was similar (P > 0.05) to MBM-3 and MBM-4, while that of MBM-3 was higher (P < 0.05) than MBM-4. These results demonstrated that the direct method can be used for the determination of true Ca digestibility in feed ingredients and that Ca in MBM is not highly available as often assumed. The variability in true Ca digestibility of MBM samples could not be attributed to Ca content, percentage bones or particle size. © 2015 Poultry Science Association Inc.

Relationship between residual feed intake and digestibility for lactating Holstein cows fed high and low starch diets.

PubMed

Potts, S B; Boerman, J P; Lock, A L; Allen, M S; VandeHaar, M J

2017-01-01

We determined if differences in digestibility among cows explained variation in residual feed intake (RFI) in 4 crossover design experiments. Lactating Holstein cows (n=109; 120±30d in milk; mean ± SD) were fed diets high (HS) or low (LS) in starch. The HS diets were 30% (±1.8%) starch and 27% (±1.2%) neutral detergent fiber (NDF); LS diets were 14% (±2.2%) starch and 40% (±5.3%) NDF. Each experiment consisted of two 28-d treatment periods, with apparent total-tract digestibility measured using indigestible NDF as an internal marker during the last 5d of each period. Individual cow dry matter (DM) intake and milk yield were recorded daily, body weight was measured 3 to 5 times per week, and milk components were analyzed 2 d/wk. Individual DM intake was regressed on milk energy output, metabolic body weight, body energy gain, and fixed effects of parity, experiment, cohort (a group of cows that received treatments in the same sequence) nested within experiment, and diet nested within cohort and experiment, with the residual being RFI. High RFI cows ate more than expected and were deemed less efficient. Residual feed intake correlated negatively with digestibility of starch for both HS (r=-0.31) and LS (r=-0.23) diets, and with digestibilities of DM (r=-0.30) and NDF (r=-0.23) for LS diets but was not correlated with DM or NDF digestibility for HS diets. For each cohort within an experiment, cows were classified as high RFI (HRFI; >0.5 SD), medium RFI (MRFI; ±0.5 SD), and low RFI (LRFI; <-0.5 SD). Digestibility of DM was similar (~66%) among HRFI and LRFI for HS diets but greater for LRFI when fed LS diets (64 vs. 62%). For LS diets, digestibility of DM could account for up to 31% of the differences among HRFI and LRFI for apparent diet energy density, as determined from individual cow performance, indicating that digestibility explains some of the between-animal differences for the ability to convert gross energy into net energy. Some of the differences in digestibility between HRFI and LRFI were expected because cows with high RFI eat at a greater multiple of maintenance, and greater intake is associated with increased passage rate and digestibility depression. Based on these data, we conclude that a cow's digestive ability explains none of the variation in RFI for cows eating high starch diets but 9 to 31% of the variation in RFI when cows are fed low starch diets. Perhaps differences in other metabolic processes, such as tissue turnover, heat production, or others related to maintenance, can account for more variation in RFI than digestibility. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

On the road to science education for sustainability?

NASA Astrophysics Data System (ADS)

Albe, Virginie

2013-03-01

In this paper I discuss three issues relevant to the ideas introduced by Colucci-Gray, Perazzone, Dodman and Camino (2012) in their three-part paper on epistemological reflections and educational practice for science education for sustainability: (1) social studies of science for science education, (2) education for sustainability or sustainable development, and (3) curriculum studies and action-research. For the first issue, I address the need for science education efforts dedicated to an epistemological renewal to take seriously into consideration the contributions of the social studies of science. This perspective may be fruitful for an education for sustainability that also requires one to consider the political dimension of environmental issues and their intrinsic power relationships. It also encourages the abandonment of dichotomies that hamper democratic participation: experts/lay people, science/society, scientific knowledge/values, etc. For the second issue, my commentary focuses on the challenges that education for sustainability or sustainable development pose to science education with a shift from subject matter contents to socio-educative aims and socio-political actions. These challenges lead to the third issue with an invitation to apprehend science education for sustainability within the frameworks of curriculum theory and design-based research.

(The Ethics of) Teaching Science and Ethics: A Collaborative Proposal.

PubMed

Kabasenche, William P

2014-12-01

I offer a normative argument for a collaborative approach to teaching ethical issues in the sciences. Teaching science ethics requires expertise in at least two knowledge domains-the relevant science(s) and philosophical ethics. Accomplishing the aims of ethics education, while ensuring that science ethics discussions remain grounded in the best empirical science, can generally best be done through collaboration between a scientist and an ethicist. Ethics as a discipline is in danger of being misrepresented or distorted if presented by someone who lacks appropriate disciplinary training and experience. While there are exceptions, I take philosophy to be the most appropriate disciplinary domain in which to gain training in ethics teaching. Science students, who must be prepared to engage with many science ethics issues, are poorly served if their education includes a misrepresentation of ethics or specific issues. Students are less well prepared to engage specific issues in science ethics if they lack an appreciation of the resources the discipline of ethics provides. My collaborative proposal looks at a variety of ways scientists and ethicists might collaborate in the classroom to foster good science ethics education.

Invasive Species Science Update (No. 2)

Treesearch

Mee-Sook Kim; Jack Butler

2008-01-01

Mee-Sook and I received several favorable comments regarding the first issue of the Invasive Species Science Update. In true Government form, the newsletter is now often referenced by the acronym ISSU. So, this is the second issue of ISSU.

Adults' Decision-Making about the Electronic Waste Issue: The Role of the Nature of Science Conceptualizations and Moral Concerns in Socio-Scientific Decision-Making

ERIC Educational Resources Information Center

Yu, Yuqing

2010-01-01

Socio-scientific issues have become increasingly important in Science-Technology-Society (STS) education as a means to make science learning more relevant to students' lives. This study used the e-waste issue as a context to investigate two aspects of socio-scientific decision-making: (1) the relationship between the nature of science (NOS)…

Responsiveness to Intervention: An SLD Determination Resource. Information Digest. Winter 2007

ERIC Educational Resources Information Center

Tollefson, Julie M.; Mellard, Daryl F.; McKnight, Melinda A.

2007-01-01

The 2004 reauthorization of the Individuals with Disabilities Education Improvement Act (P.L. 108-446) (IDEA 2004) has brought the issue of specific learning disabilities (SLD) identification procedures and criteria to the forefront. Calls for reform are not new and are based on decades of various policy, implementation, and research agendas. The…

Student Financial Aid and Women. ERIC Digest.

ERIC Educational Resources Information Center

Moran, Mary

The impact of student aid policies on women is assessed. Patterns of enrollment and economic profiles differ for male and female students. Women, for example, far surpass men as adult, part-time, independent, and unclassified students, the categories most likely to present barriers to participating in most financial aid programs. Gender issues in…

High School-College Partnerships: Conceptual Models, Programs, and Issues. ERIC Digest.

ERIC Educational Resources Information Center

Greenberg, Arthur R.

This brief report summarizes a monograph of the same title. Evidence of increasing interest in high school-college partnerships is presented. Among the reasons cited for renewed interest are: changing student population, students' frequent lack of skills preparedness, and the awareness of a need for new models of inservice staff development for…

The giant panda gut microbiome.

PubMed

Wei, Fuwen; Wang, Xiao; Wu, Qi

2015-08-01

Giant pandas (Ailuropoda melanoleuca) are bamboo specialists that evolved from carnivores. Their gut microbiota probably aids in the digestion of cellulose and this is considered an example of gut microbiota adaptation to a bamboo diet. However, this issue remains unresolved and further functional and compositional studies are needed. Copyright © 2015 Elsevier Ltd. All rights reserved.

Preparation of Formalin-fixed Paraffin-embedded Tissue Cores for both RNA and DNA Extraction.

PubMed

Patel, Palak G; Selvarajah, Shamini; Boursalie, Suzanne; How, Nathan E; Ejdelman, Joshua; Guerard, Karl-Philippe; Bartlett, John M; Lapointe, Jacques; Park, Paul C; Okello, John B A; Berman, David M

2016-08-21

Formalin-fixed paraffin embedded tissue (FFPET) represents a valuable, well-annotated substrate for molecular investigations. The utility of FFPET in molecular analysis is complicated both by heterogeneous tissue composition and low yields when extracting nucleic acids. A literature search revealed a paucity of protocols addressing these issues, and none that showed a validated method for simultaneous extraction of RNA and DNA from regions of interest in FFPET. This method addresses both issues. Tissue specificity was achieved by mapping cancer areas of interest on microscope slides and transferring annotations onto FFPET blocks. Tissue cores were harvested from areas of interest using 0.6 mm microarray punches. Nucleic acid extraction was performed using a commercial FFPET extraction system, with modifications to homogenization, deparaffinization, and Proteinase K digestion steps to improve tissue digestion and increase nucleic acid yields. The modified protocol yields sufficient quantity and quality of nucleic acids for use in a number of downstream analyses, including a multi-analyte gene expression platform, as well as reverse transcriptase coupled real time PCR analysis of mRNA expression, and methylation-specific PCR (MSP) analysis of DNA methylation.

Effect of source of trace minerals in either forage- or by-product-based diets fed to dairy cows: 1. Production and macronutrient digestibility.

PubMed

Faulkner, M J; Weiss, W P

2017-07-01

Excess rumen-soluble Cu and Zn can alter rumen microbial populations and reduce fiber digestibility. Because of differences in particle size and chemical composition, ruminal and total-tract digestibility of fiber from forage- and by-product-based diets can differ. We hypothesized that, because of differences in mineral solubility, diets with hydroxy rather than sulfate trace minerals would have greater fiber digestibility, but the effect may depend on source of fiber. Eighteen multiparous cows were used in a split-plot replicated Latin square with two 28-d periods to evaluate the effects of Cu, Zn, and Mn source (sulfates or hydroxy; Micronutrients USA LLC, Indianapolis, IN) and neutral detergent fiber (NDF) source (forage diet = 26% NDF vs. by-product = 36%) on total-tract nutrient digestibility. During the entire experiment (56 d) cows remained on the same fiber treatment, but source of supplemental trace mineral was different for each 28-d period so that all cows were exposed to both mineral treatments. During each of the two 28-d periods, cows were fed no supplemental Cu, Zn, or Mn for 16 d followed by 12 d of feeding supplemental Cu, Zn, and Mn from either sulfates or hydroxy sources. Supplemental minerals for each of the mineral sources fed provided approximately 10, 35, and 32 mg/kg of supplemental Cu, Zn, and Mn, respectively, for both fiber treatments. Total dietary concentrations of Cu, Zn, and Mn were approximately 19, 65, and 70 mg/kg for the forage diets and 21, 85, and 79 mg/kg for the by-product diets, respectively. Treatment had no effect on dry matter intake (24.2 kg/d) or milk production (34.9 kg/d). Milk fatty acid profiles were altered by fiber source, mineral source, and their interaction. Cows fed the by-product diets had lower dry matter (65.9 vs. 70.2%), organic matter (67.4 vs. 71.7%), and crude protein digestibility (58.8 vs. 62.1%) but greater starch (97.5 vs. 96.3%) and NDF digestibility (50.5 vs. 44.4%) compared with cows fed the forage treatment. Feeding increased concentrations of by-products decreased total digestible nutrients regardless of mineral source. Feeding hydroxy Cu, Zn, and Mn increased NDF digestibility (48.5 vs. 46.4%) but had no effect on total digestible nutrients. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Using Socioscientific Issues in Primary Classrooms

ERIC Educational Resources Information Center

Dolan, Thomas J.; Nichols, Bryan H.; Zeidler, Dana L.

2009-01-01

In this article, we provide three examples of the use of socioscientific issues (SSI) in a 5th-grade classroom. Taken from Earth science (beach sand replacement), life science (the Canadian seal hunt), and physical science (speed limits), the examples show how teachers can embed scientific content in controversial social issues that engage younger…

Professional Development Leadership and the Diverse Learner. Issues in Science Education.

ERIC Educational Resources Information Center

Rhoton, Jack, Ed.; Bowers, Patricia, Ed.

This book focuses on the professional development of teachers and discusses issues related to science education reform. The content of the book is divided into two parts. Part 1, Professional Development: Implications for Science Leadership, chapters include: (1) "The Role of the Science Leader in Implementing Standards-Based Science Programs"…

EDUCATIONAL NEEDS OF ANIMAL SCIENCE TECHNICIANS, A DIGEST OF A PH.D. DISSERTATION. RESEARCH SERIES IN AGRICULTURAL EDUCATION.

ERIC Educational Resources Information Center

BAKER, JAMES K.; WOODIN, RALPH J.

A STUDY WAS UNDERTAKEN TO (1) DETERMINE THE NEED FOR TECHNICIANS, (2) DETERMINE REQUIRED COMPETENCIES, (3) DETERMINE JOB CHARACTERISTICS, (4) IDENTIFY OCCUPATIONAL CLUSTERS, AND (5) DEVELOP CURRICULUMS. PERSONAL INTERVIEWS, MAILED QUESTIONNAIRES, AND FOLLOWUP LETTERS YIELDED DATA FROM 288 OF THE 914 EMPLOYERS CONTACTED. OF 13,958 EMPLOYEES OF THE…

Current Reform Efforts in Mathematics Education. ERIC/CSMEE Digest.

ERIC Educational Resources Information Center

Edwards, Thomas G.

The current reform effort in mathematics education has its roots in the decade of the 1980's and the national reports that focused attention on an impending crisis in education, particularly in mathematics and science. Within this context, dozens of individual reform efforts have been initiated in recent years. Many have focused on the development…

Odorants and malodors associated with land application of biosolids stabilized with lime and coal fly ash.

PubMed

Laor, Yael; Naor, Moshe; Ravid, Uzi; Fine, Pinchas; Halachmi, Ilan; Chen, Yona; Baybikov, Rima

2011-01-01

Malodor emissions limit public acceptance of using municipal biosolids as natural organic resources in agricultural production. We aimed to identify major odorants and to evaluate odor concentrations associated with land application of anaerobically digested sewage sludges (Class B) and their alkaline (lime and coal fly ash)-stabilized products (Class A). These two types of biosolids were applied at 12.6 tonnes ha(-1) (dry weight) to microplots of very fine clayey Vertisol in the Jezreel Valley, northern Israel. The volatile organic compounds (VOCs) emitted from the biosolids before and during alkaline stabilization and after incorporation into the soil were analyzed by headspace solid-phase microextraction followed by gas chromatography-mass spectrometry. Odor concentrations at the plots were evaluated on site with a Nasal Ranger field olfactometer that sniffed over a defined land surface area through a static chamber. The odors emitted by anaerobically digested sewage sludges from three activated sludge water treatment plants had one characteristic chemical fingerprint. Alkaline stabilization emitted substantial odors associated with high concentrations of ammonia and release of nitrogen-containing VOCs and did not effectively reduce the potential odor annoyance. Odorous VOCs could be generated within the soil after biosolids incorporation, presumably because of anaerobic conditions within soil-biosolids aggregates. We propose that dimethyl disulfide and dimethyl trisulfide, which seem to be most related to the odor concentrations of biosolids-treated soil, be used as potential chemical markers for the odor annoyance associated with incorporation of anaerobically digested sewage sludges. by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.

Ruminal bacteria and protozoa composition, digestibility, and amino acid profile determined by multiple hydrolysis times.

PubMed

Fessenden, S W; Hackmann, T J; Ross, D A; Foskolos, A; Van Amburgh, M E

2017-09-01

Microbial samples from 4 independent experiments in lactating dairy cattle were obtained and analyzed for nutrient composition, AA digestibility, and AA profile after multiple hydrolysis times ranging from 2 to 168 h. Similar bacterial and protozoal isolation techniques were used for all isolations. Omasal bacteria and protozoa samples were analyzed for AA digestibility using a new in vitro technique. Multiple time point hydrolysis and least squares nonlinear regression were used to determine the AA content of omasal bacteria and protozoa, and equivalency comparisons were made against single time point hydrolysis. Formalin was used in 1 experiment, which negatively affected AA digestibility and likely limited the complete release of AA during acid hydrolysis. The mean AA digestibility was 87.8 and 81.6% for non-formalin-treated bacteria and protozoa, respectively. Preservation of microbe samples in formalin likely decreased recovery of several individual AA. Results from the multiple time point hydrolysis indicated that Ile, Val, and Met hydrolyzed at a slower rate compared with other essential AA. Singe time point hydrolysis was found to be nonequivalent to multiple time point hydrolysis when considering biologically important changes in estimated microbial AA profiles. Several AA, including Met, Ile, and Val, were underpredicted using AA determination after a single 24-h hydrolysis. Models for predicting postruminal supply of AA might need to consider potential bias present in postruminal AA flow literature when AA determinations are performed after single time point hydrolysis and when using formalin as a preservative for microbial samples. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Functional polymorphisms in the CYP2C19 gene contribute to digestive system cancer risk: evidence from 11,042 subjects.

PubMed

Zhou, Bo; Song, Zhenshun; Qian, Mingping; Li, Liang; Gong, Jian; Zou, Shaowu

2013-01-01

CYP2C19 belongs to the cytochrome P450 superfamily of enzymes involved in activating and detoxifying many carcinogens and endogenous compounds, which has attracted considerable attention as a candidate gene for digestive system cancer. CYP2C19 has two main point mutation sites (CYP2C19*2, CYP2C19*3) leading to poor metabolizer (PM) phenotype. In the past decade, the relationship between CYP2C19 polymorphism and digestive system cancer has been reported in various ethnic groups; however, these studies have yielded contradictory results. To clarify this inconsistency, we performed this meta-analysis. Databases including Pubmed, EMBASE, Web of Science and China National Knowledge Infrastructure (CNKI) were searched to find relevant studies. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of association. In total, 18 studies with 4,414 cases and 6,628 controls were included. Overall, significantly elevated digestive system cancer risk was associated CYP2C19 PM with OR of 1.66 (95%CI: 1.31-2.10, P<10(-5)) when all studies were pooled into the meta-analysis. There was strong evidence of heterogeneity (P = 0.006), which largely disappeared after stratification by cancer type. In the stratified analyses according to cancer type, ethnicity, control source and sample size, significantly increased risks were found. In summary, our meta-analysis suggested that the PM phenotype caused by the variation on CYP2C19 gene is associated with increased risk of digestive system cancer, especially in East Asians.

Lack of association between methionine synthase A2756G polymorphism and digestive system cancer risk: evidence from 3,9327 subjects.

PubMed

Zhao, Yuan; Chen, Zixian; Ma, Yushui; Xia, Qing; Zhang, Feng; Fu, Da; Wang, Xiao-Feng

2013-01-01

Polymorphisms in genes involved in the metabolism of folate and methyl groups have been implicated with risk of digestive system cancer. Methionine synthase (MTR) plays a central role in folate metabolism, thereby affecting DNA methylation. The association between A2756G polymorphism (rs1805087) in MTR and digestive system cancer susceptibility was inconsistent in previous studies. To investigate this inconsistency, we performed this meta-analysis. Databases including Pubmed, EMBASE, ISI Web of Science and China National Knowledge Infrastructure (CNKI) were searched to find relevant studies. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of association. Potential sources of heterogeneity were also assessed by subgroup analysis and meta-regression. A total of 29 articles with 15,368 patients and 23,959 controls were included. We found no association between MTR A2756G polymorphism and digestive system cancer in overall population (G allele: OR = 1.03, 95% CI = 0.98-1.09, P = 0.25; dominant model: OR = 1.03, 95% CI = 0.97-1.10, P = 0.33; recessive model: OR = 1.02, 95% CI = 0.89-1.17, P = 0.79). In the stratified analyses according to cancer type, sample size and genotyping method, no evidence of any gene-disease association was obtained in almost all genetic models. However, marginal significant associations were found for East Asians and hospital-based studies. This meta-analysis suggests that there is no significant association between the MTR A2756G polymorphism and digestive system cancer risk.

Collaboration between science teacher educators and science faculty from arts and sciences for the purpose of developing a middle childhood science teacher education program: A case study

NASA Astrophysics Data System (ADS)

Buck, Gayle A.

1998-12-01

The science teacher educators at a midwestern university set a goal to establish a collaborative relationship between themselves and representatives from the College of Arts & Sciences for the purpose of developing a middle childhood science education program. The coming together of these two faculties provided a unique opportunity to explore the issues and experiences that emerge as such a collaborative relationship is formed. In order to gain a holistic perspective of the collaboration, a phenomenological case study design and methods were utilized. The study took a qualitative approach to allow the experiences and issues to emerge in a naturalistic manner. The question, 'What are the issues and experiences that emerge as science teacher educators and science faculty attempt to form a collaborative relationship for the purpose of developing a middle childhood science teacher program?' was answered by gathering a wealth of data. These data were collected by means of semi-structured interviews, observations and written document reviews. An overall picture was painted of the case by means of heuristic, phenomenological, and issues analyses. The researcher followed Moustakas' Phases of Heuristic Research to answer the questions 'What does science mean to me?' and 'What are my beliefs about the issues guiding this case?' prior to completing the phenomenological analysis. The phenomenological analysis followed Moustakas' 'Modification of the Van Kaam Methods of Analysis of Phenomenological Data'. This inquiry showed that the participants in this study came to the collaboration for many different reasons and ideas about the purpose for such a relationship. The participants also had very different ideas about how such a relationship should be conducted. These differences combined to create some issues that affected the development of curriculum and instruction. The issues involved the lack of (a) mutual respect for the work of the partners, (b) understanding about the roles and responsibilities of the partners, (c) a clear and understandable goal, and (d) time to collaborate. If not addressed, these are the issues that may prohibit the establishment of a successful collaboration, thus affecting the development of a top quality middle childhood science teacher education program.

The effect of harvesting strategy of grass silage on digestion and nutrient supply in dairy cows.

PubMed

Kuoppala, K; Rinne, M; Ahvenjärvi, S; Nousiainen, J; Huhtanen, P

2010-07-01

This study examined the effects of primary growth (PG) and regrowth (RG) timothy-meadow fescue silages harvested at 2 stages of growth on feed intake, cell wall digestion and ruminal passage kinetics in lactating dairy cows. Four dairy cows equipped with rumen cannulas were used in a study designed as a 4 x 4 Latin square with 21-d periods. The experimental silages were offered ad libitum with 8 kg/d of concentrate. Ruminal digestion and passage kinetics were assessed by the rumen evacuation technique. Silages of PG were on average more digestible than RG silages. The concentration of neutral detergent fiber (NDF) and indigestible NDF (iNDF) increased and the concentration of digestible organic matter in dry matter (DM) of silages decreased with advancing maturity in PG and RG. Cows consumed more feed DM, energy, and protein and produced more milk when fed PG diets rather than RG diets. Delaying the harvest decreased DM intake and milk production in PG and RG. There were no differences between PG and RG in rumen pH, ammonia N, or total volatile fatty acid concentrations. The intake of N, omasal canal flow of total nonammonia N and microbial N, excretion of N in feces, and ruminal true digestibility of N were higher for PG than for RG diets. The efficiency of microbial N synthesis was not different between PG and RG. Intake and omasal canal flow of organic matter, NDF, and potentially digestible NDF (pdNDF) were higher in PG than in RG. Whole-diet digestibility of organic matter, NDF, or pdNDF in the rumen or in the total tract was not different between PG and RG despite the higher digestibility of PG silages measured in sheep. Rumen pool sizes of crude protein and iNDF were lower for PG diets, whereas the pool size of pdNDF was higher for PG diets than for RG diets. The rate of passage of iNDF was higher for PG diets than for RG diets, with no difference between them in rate of digestion or passage of pdNDF. The lower milk production in cows fed regrowth grass silages compared with primary growth silages could be attributed to the lower silage DM intake potential. Chemical composition of the silages, rumen fill, digestion and passage kinetics of NDF, or the ratio of protein to energy in absorbed nutrients could not explain the differences in DM intake between silages made from primary and regrowth grass. Copyright (c) 2010 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Useful theories make predictions.

PubMed

Howes, Andrew

2012-01-01

Stephen and Van Orden (this issue) propose that there is a complex system approach to cognitive science, and collectively the authors of the papers presented in this issue believe that this approach provides the means to drive a revolution in the science of the mind. Unfortunately, however illuminating, this explanation is absent and hyperbole is all too extensive. In contrast, I argue (1) that dynamic systems theory is not new to cognitive science and does not provide a basis for a revolution, (2) it is not necessary to reject cognitive science in order to explain the constraints imposed by the body and the environment, (3) it is not necessary, as Silberstein and Chemero (this issue) appear to do, to reject cognitive science in order to explain consciousness, and (4) our understanding of pragmatics is not advanced by Gibbs and Van Orden's (this issue) "self-organized criticality".? Any debate about the future of cognitive science could usefully focus on predictive adequacy. Unfortunately, this is not the approach taken by the authors of this issue. Copyright © 2012 Cognitive Science Society, Inc.

Development of an automated on-line pepsin digestion-liquid chromatography-tandem mass spectrometry configuration for the rapid analysis of protein adducts of chemical warfare agents.

PubMed

Carol-Visser, Jeroen; van der Schans, Marcel; Fidder, Alex; Hulst, Albert G; van Baar, Ben L M; Irth, Hubertus; Noort, Daan

2008-07-01

Rapid monitoring and retrospective verification are key issues in protection against and non-proliferation of chemical warfare agents (CWA). Such monitoring and verification are adequately accomplished by the analysis of persistent protein adducts of these agents. Liquid chromatography-mass spectrometry (LC-MS) is the tool of choice in the analysis of such protein adducts, but the overall experimental procedure is quite elaborate. Therefore, an automated on-line pepsin digestion-LC-MS configuration has been developed for the rapid determination of CWA protein adducts. The utility of this configuration is demonstrated by the analysis of specific adducts of sarin and sulfur mustard to human butyryl cholinesterase and human serum albumin, respectively.

Challenges and Opportunities for Education about Dual Use Issues in the Life Sciences

ERIC Educational Resources Information Center

National Academies Press, 2011

2011-01-01

The Challenges and Opportunities for Education About Dual Use Issues in the Life Sciences workshop was held to engage the life sciences community on the particular security issues related to research with dual use potential. More than 60 participants from almost 30 countries took part and included practicing life scientists, bioethics and…

Berkeley Lab - Materials Sciences Division

Science.gov Websites

Synthesis Condensed Matter and Materials Physics Scattering and Instrumentation Science Centers Center for Issue 3, March Issue 2, February Issue 1, January A U.S. Department of Energy National Laboratory

Effects of feeding milk replacer at 2 rates with pelleted, low-starch or texturized, high-starch starters on calf performance and digestion.

PubMed

Quigley, J D; Hill, T M; Dennis, T S; Suarez-Mena, F X; Schlotterbeck, R L

2018-04-11

Milk replacer (MR) feeding programs have traditionally fed at less than ad libitum amounts to promote calf starter (CS) intake and allow early weaning. More recently, increased amounts of MR preweaning have been shown to increase preweaning ADG, although postweaning growth may be reduced. Several studies suggest that limited postweaning digestion of nutrients in CS may contribute to postweaning growth impairment. It is not clear whether CS formulation might also contribute to differences in postweaning nutrient digestion when calves are fed different MR programs. A 56-d feeding and digestion trial was conducted to compare growth and digestion in 2- to 3-d-old male Holstein calves (n = 48; initially 41.9 kg of body weight) fed a moderate (MRM) or high (MRH) MR program and either a pelleted CS containing 9.9% starch or a texturized CS containing 41.3% starch. Programs were 0.66 kg of dry matter (DM)/d of MR to d 46, then 0.33 kg/d to d 49 (MRM) and 0.85 kg of DM/d to d 5, then 1.07 kg/d to d 42, then 0.53 kg/d to d 49 (MRH). The MR contained 25% crude protein and 18.6% fat and was reconstituted to 13 (MRM) or 15% (MRH) solids. Calves were also assigned randomly to receive a pelleted CS (9.9% starch, 36.9% NDF) or a textured CS (41.3% starch, 13.3% NDF) and water for ad libitum intake for 56 d. During d 31 to 35 and 52 to 56, fecal samples were collected from 5 calves per treatment for estimates of digestibility. Selected nutrients and chromic oxide (d 31-35) or acid-insoluble ash (d 52-56) were analyzed in feed and feces to estimate digestibility. Data were analyzed as a completely randomized design. Repeated measures analysis was performed when data were measured by week. Calves fed MRH gained more body weight (but not hip width) and were more efficient to weaning compared with calves fed MRM, although fecal scores and days treated with medications were greater. We found no effect of CS on animal performance, although calves fed textured CS had higher fecal scores. Digestibilities of nutrients were affected by treatment and time of sampling (5 or 8 wk). At 5 wk, digestion of DM, organic matter, crude protein, and fat were lower and digestion of acid detergent fiber, neutral detergent fiber, and starch were higher in calves fed MRM and reflected greater CS intake. Also, digestion of DM, organic matter, acid detergent fiber, starch, crude protein, and fat were greater in calves fed textured CS at 5 wk. By 8 wk, when CS was the only source of nutrients, digestion of DM, organic matter, acid detergent fiber, and neutral detergent fiber were greater in calves fed MRM and digestion of DM and organic matter were greater, and acid detergent fiber and neutral detergent fiber digestion were lower in calves fed textured CS. Formulation of CS as well as amount of MR offered to young calves influenced animal performance and digestion in this study. Copyright © 2018 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

An investigation of the relationships between junior high school students' (8th and 9th grades) background variables and structure of knowledge recall of biological content

NASA Astrophysics Data System (ADS)

Demetrius, Olive Joyce

The purpose of this study was to examine the relationships between Junior High School students' (8th and 9th grades) background variables (e.g. cognitive factors, prior knowledge, preference for science versus non-science activities, formal and informal activities) and structure of information recall of biological content. In addition, this study will illustrate how flow maps, a graphic display, designed to represent the sequential flow and cross linkage of ideas in information recalled by the learner can be used as a tool for analyzing science learning data. The participants (46 junior high school students) were taught a lesson on the human digestive system during which they were shown a model of the human torso. Their pattern of information recall was determined by using an interview technique to elicit their understanding of the functional anatomy of the human digestive system. The taped responses were later transcribed for construction of the flow map. The interview was also used to assess knowledge recall of biological content. The flow map, science interest questionnaire and the cognitive operations (based on content analysis of student's narrative) were used to analyze data from each respondent. This is a case study using individual subjects and interview techniques. The findings of this study are: (1) Based on flow map data higher academic ability students have more networking of ideas than low ability students. (2) A large percentage of 9th grade low ability students intend to pursue science/applied science course work after leaving school but they lack well organized ways of representing science knowledge in memory. (3) Content analysis of the narratives shows that students with more complex ideational networks use higher order cognitive thought processes compared to those with less networking of ideas. If students are to make a successful transition from low academic performance to high academic performance it seems that more emphasis should be placed on information networking skills. This is specifically likely to be productive for student currently performing on low academic ability levels and yet have high aspirations for pursuing science as a career.

The impact of economic issues on Nigerian health sciences libraries.

PubMed Central

Belleh, G S; Akhigbe, O O

1991-01-01

Economic issues are among the most important factors affecting health sciences libraries in Nigeria. These issues are influenced by the political, cultural, geographic, and demographic characteristics of the country. Significant economic issues are the dependence of the national economy on a single commodity, large foreign debt and spiraling inflation, stringent foreign exchange control measures, and inadequate realization by authorities of the role and importance of health sciences libraries. With shrinking budgets, resources, and staff, health sciences libraries can neither grow nor afford library automation. Health sciences librarians must take initiatives for cooperative activities to increase and make the most of resources, pursue nontraditional methods of fund-raising, educate authorities about the role and importance of libraries, and develop and implement a plan for the development and growth of health sciences libraries in the country. PMID:1884083

Socioscientific Issues and Multidisciplinarity in School Science Textbooks

NASA Astrophysics Data System (ADS)

Morris, Helen

2014-05-01

The inclusion of socioscientific issues (SSIs) in the science curriculum is a well-established trend internationally. Apart from claims about its innate value, one of the rationales for this approach is its potential for helping to counter declining interest and participation. SSIs involve the use of science and are of interest to society, also raising ethical and moral dilemmas. Introducing such problems presents a significant and usually cross-disciplinary challenge to curriculum developers and teachers. The aim of this paper is to examine how this challenge has been met when judged against contemporary views of the issues concerned. It first explores how SSIs have been interpreted in an important and innovative science course for students aged 14-16 in England, entitled Twenty First Century Science. This paper analyses the Twenty First Century Science textbooks, focusing in detail on two SSIs, reproductive genetic technology and climate change. For each of these issues, the key ideas present in the social science literature surrounding the problems are outlined. This review is then used as an analytical framework to examine how the issues are presented in the textbooks. It is argued in this paper that the perspectives the textbooks take on these issues largely do not include perspectives from social science disciplines. It goes on to suggest that the development of future SSI-based curricula needs to take account of these wider, often interdisciplinary, perspectives.

Bringing Planetary Data into Learning Environments: A Community Effort

NASA Astrophysics Data System (ADS)

Shipp, S.; Higbie, M.; Lowes, L.

2005-12-01

Recognizing the need to communicate scientific findings, and the power of using real planetary data in educational settings to engage students in Earth and space science in meaningful ways, the South Central Organization of Researchers and Educators and the Solar System Exploration Education Forum, part of NASA's Science Mission Directorate's Support Network, have established the Planetary Data in Education (PDE) Initiative. The Initiative strives to: 1) Establish a collaborative community of educators, education specialists, curriculum developers, tool developers, learning technologists, scientists, and data providers to design and develop educationally appropriate products; 2) Build awareness in the broader educational and scientific community of existing programs, products, and resources; 3) Address issues hindering the effective use of planetary data in formal and informal educational settings; and 4) Encourage partnerships that leverage the community's expertise The PDE community has hosted two conferences exploring issues in using data in educational settings. The community recognizes that data are available through venues such as the Planetary Data Systems (PDS), but not in a format that the end-user in a formal or informal educational setting can digest; these data are intended for the scientific audience. Development of meaningful educational programs using planetary data requires design of appropriate learner interfaces and involvement of data providers, product developers, learning technologists, scientists, and educators. The PDE community will participate in the development of Earth Exploration Toolbooks during the DLESE Data Services Workshop and will host a workshop in the summer of 2006 to bring together small groups of educators, data providers, and learning technologists, and scientists to design and develop products that bring planetary data into educational settings. In addition, the PDE community hosts a Web site that presents elements identified as needed by the community, including examples of planetary data use in education, recommendations for program development, links to data providers, opportunities for collaboration, pertinent research, and a Web portal to access educational resources using planetary data on the DLESE Web site.

Methodology issues in implementation science.

PubMed

Newhouse, Robin; Bobay, Kathleen; Dykes, Patricia C; Stevens, Kathleen R; Titler, Marita

2013-04-01

Putting evidence into practice at the point of care delivery requires an understanding of implementation strategies that work, in what context and how. To identify methodological issues in implementation science using 4 studies as cases and make recommendations for further methods development. Four cases are presented and methodological issues identified. For each issue raised, evidence on the state of the science is described. Issues in implementation science identified include diverse conceptual frameworks, potential weaknesses in pragmatic study designs, and the paucity of standard concepts and measurement. Recommendations to advance methods in implementation include developing a core set of implementation concepts and metrics, generating standards for implementation methods including pragmatic trials, mixed methods designs, complex interventions and measurement, and endorsing reporting standards for implementation studies.

Bookwatch: A Candid Review of Science Textbooks. Volume I, February-December 1988.

ERIC Educational Resources Information Center

Mayer, William V., Ed.; Bennetta, William J., Ed.

1988-01-01

Each issue in this set of newsletters is devoted exclusively to reviews of a science textbook. Each text is reviewed by two scientists and one science educator. Textbooks reviewed by issue are: (1) "Scott, Foresman Biology" (1988); (2) "Heath Life Science" (1987); (3) "Prentice-Hall Biology" (1987); (4) "Scott, Foresman Life Science" (1987); (5)…

Milk production, nitrogen balance, and fiber digestibility prediction of corn, whole plant grain sorghum, and forage sorghum silages in the dairy cow.

PubMed

Colombini, S; Galassi, G; Crovetto, G M; Rapetti, L

2012-08-01

Total mixed rations containing corn (CS), whole plant grain sorghum (WPGS), or forage sorghum (FS) silages were fed to 6 primiparous Italian Friesian cows to determine the effects on lactation performance, nutrient digestibility, and N balance. Furthermore, the relationship between in vivo total-tract neutral detergent fiber (NDF) digestibility (ttNDFD) and the ttNDFD derived by the Cornell Net Carbohydrate and Protein System (CNCPS) model was assessed. Cows were assigned to 1 of 3 diets in a replicated 3 × 3 Latin square with 28-d periods. The experimental treatment was silage type and 3 different silages were included in the diets. The diets were formulated to be iso-NDF. Accordingly, each diet was formulated to contain 41.5% CS silage, 36.7% WPGS silage, or 28.0% FS silage, on a DM basis. Starch content was balanced by adding the appropriate amount of corn meal. Separate collection of total urine and feces was performed. Dietary forages were analyzed for in vitro NDF digestibility (6 and 24h of incubation) to predict fiber digestion rate with 2 NDF pools (digestible and indigestible). Rumen digestibility of the potentially digestible NDF pool was predicted using CNCPS version 6.1, using the in vitro forage fiber digestion rate. The ttNDFD was predicted assuming that intestinal digestibility of the NDF amount escaping rumen digestion was 20%, according to the CNCPS model. Dry matter intake was decreased by approximately 1.8 kg/d in cows fed the FS diet compared with the other diets, probably for the greater particle size of FS diet. Hence, milk yield (kg/d) was lowest for FS (23.6), intermediate for WPGS (24.6), and highest for the CS diet (25.4). Milk urea N (mg/dL) was highest for FS (12.9), intermediate for WPGS (11.9), and lowest for CS (10.7) diet. In vivo ttNDFD (%) was 51.4 (CS), 48.6 (WPGS), and 54.1 (FS); this was probably due to a higher retention time of FS diet in the rumen rather than to a better quality of the FS silage, as confirmed by in situ and in vitro results. Urinary N excretion (% N intake) was highest for FS (31.8), intermediate for WPGS (29.3), and lowest for the CS (27.5) diet. The predicted ttNDFD (37.7, 36.3, and 39.5% for CS, WPGS, and FS, respectively) were lower than the in vivo results. Providing an adequate starch supplementation, whole plant grain sorghum silage can replace corn silage in dairy cows TMR. Forage sorghum silage had rumen NDF digestibility comparable to the other silages; however, it had a negative effect on dry matter intake and milk production, probably due to an inadequate effect of processing. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Politicas de tolerancia cero (Zero Tolerance Policies). ERIC Digest.

ERIC Educational Resources Information Center

McAndrews, Tobin

State legislatures and school boards are adopting a growing number of zero-tolerance polices toward weapons, guns, and violence. Zero-tolerance polices are rules intended to address specific school-safety issues. They have arisen in part as a response to the threat of the withdrawal of federal funds under the 1994 Gun-Free Schools Act, and…

Desegregation and the Public School. Info-Item Educators Digest/ No. 1041.

ERIC Educational Resources Information Center

Ohio Education Association, Columbus. Instruction and Professional Development Div.

This handbook provides a step-by-step approach for school systems to guide them in dealing with some of the more complex issues where desegregation and the development of plans is concerned. The legal implications of desegregation and factors necessitating affirmative action are discussed. An outline is given for organizing a task force on…

Staying in School: Social Learning Factors Which Lead to Retention.

ERIC Educational Resources Information Center

Damico, Sandra Bowman

This study explores instructional and interpersonal factors policy issue is discussed in this digest. The school in school rather than dropping out. These students had failed, two or more times, that portion of Florida's State Student Assessment Test which was required for receipt of a high school diploma. Data for this study were collected in…

National Commission on Excellence in Teacher Education: Commissioned Papers from the Regional Hearings. ERIC Digest.

ERIC Educational Resources Information Center

Butler, Catherine

The National Commission on Excellence in Teacher Education was appointed in 1983 to describe the present state of teacher education, identify problem issues, and make recommendations for the improvement of teacher education. The final report of the Commission, "A Call for Change in Teacher Education," was based on information gathered at…

The Science of Addiction: Drugs, Brains, and Behavior

MedlinePlus

... Issue Past Issues The Science of Addiction: Drugs, Brains, and Behavior Past Issues / Spring 2007 Table of ... Americans understand addiction as a chronic but treatable brain disease. The eye-opening documentary, Addiction , first aired ...

Education in Marine Science and Technology--Historical and Current Issues.

ERIC Educational Resources Information Center

Abel, Robert B.

This review of marine science and technology education and related issues was presented to the American Association for the Advancement of Science, December 27, 1967. Areas reviewed include manpower supply and demand, oceanography education history, oceanography and the social sciences, training of technicians, the ocean engineer, education for…

Science and Society: Knowing, Teaching, Learning. Bulletin 57.

ERIC Educational Resources Information Center

Charles, Cheryl, Ed.; Samples, Bob, Ed.

The document presents 12 essays dealing with social implications of science-related issues. Intended for use by social studies/social science educators, the book focuses on curriculum, instruction, and learning environments as well as on intellectual issues related to science and society. The essays are organized into four sections. Section I…

Avoiding the Issue of Gender in Japanese Science Education

ERIC Educational Resources Information Center

Scantlebury, Kathryn; Baker, Dale; Sugi, Ayumi; Yoshida, Atsushi; Uysal, Sibel

2007-01-01

This paper describes how the patriarchal structure of Japanese society and its notions of women, femininity, and gendered stereotypes produced strong cultural barriers to increasing the participation of females in science education. Baseline data on attitudes toward science and the perceptions of gender issues in science education, academic major…

Prognostic value of pretreatment albumin/globulin ratio in digestive system cancers: A meta-analysis.

PubMed

Guo, Hui-Wen; Yuan, Tang-Zhan; Chen, Jia-Xi; Zheng, Yang

2018-01-01

The albumin/globulin ratio (AGR) has been widely reported to be a potential predictor of prognosis in digestive system cancers (DSCs), but convincing conclusions have not been made. Therefore, herein, we performed a meta-analysis of relevant studies regarding this topic to evaluate the prognostic value of AGR in patients with DSCs. Three databases, including PubMed, EMBase, and Web of science, were searched comprehensively for eligible studies through September 8, 2017. The outcomes of interest included overall survival (OS), disease-free survival (DFS), and cancer-specific survival (CSS). In our meta-analysis, pooled analysis of 13 studies with 9269 patients showed that a low AGR was significantly correlated with poor OS (HR = 1.94; 95% CI: 1.57-2.38; P <0.001). Five studies with 6538 participants involved DFS, and our pooled analysis of these studies also demonstrated that there was a significant association of a low AGR with worse DFS (HR = 1.49; 95% CI: 1.10 to 2.00; P < 0.001). In addition, only 2 studies referred to CSS, and we also detected a significant relationship between a low AGR and worse CSS from the results of our meta-analysis. In summary, a low pretreatment AGR was related to unfavorable survival in human digestive system cancers. A low pretreatment AGR may be a useful predictive prognostic biomarker in human digestive system cancers.

Prognostic significance of pretreatment plasma fibrinogen level in patients with digestive system tumors: a meta-analysis.

PubMed

Ji, Rui; Ren, Qian; Bai, Suyang; Wang, Yuping; Zhou, Yongning

2018-06-01

High pretreatment levels of plasma fibrinogen have been widely reported to be a potential predictor of prognosis in digestive system tumors; however, the conclusions are not consistent. Therefore, we performed a meta-analysis to comprehensively assess the prognostic roles of high pretreatment plasma fibrinogen levels in digestive system tumors. We searched for eligible studies in the PubMed, Embase, and Web of Science electronic databases for publications from the database inception to 1 September 2017. The endpoints of interest included overall survival, disease-free survival, and recurrence-free survival. We investigated the relationship between fibrinogenemia and overall survival in colorectal cancer (10 studies), gastric cancer (6), pancreatic cancer (6), hepatocellular carcinoma (7), and esophageal squamous cell carcinoma (10); the pooled results indicated that fibrinogenemia was significantly related to a worse overall survival (hazard ratio (HR) 1.73; 95% confidence interval (CI) 1.52, 1.97; P <0.001; HR 1.71; 95% CI 1.28, 2.28; P <0.001; HR 1.57; 95% CI 1.13, 2.17; P = 0.007; HR 1.89; 95% CI 1.57, 2.27; P <0.001, and HR 1.67; 95% CI 1.35, 2.07; P <0.001). Taken together, an increased pretreatment plasma fibrinogen level was related to worse survival in digestive system tumors, indicating that it could be a useful prognostic marker in these types of tumors.

Salivary digestive enzymes of the wheat bug, Eurygaster integriceps (Insecta: Hemiptera: Scutelleridae).

PubMed

Mehrabadi, Mohammad; Bandani, Ali Reza; Dastranj, Mehdi

2014-06-01

The digestive enzymes from salivary gland complexes (SGC) of Eurygaster integriceps, and their response to starvation and feeding were studied. Moreover, digestive amylases were partially purified and characterized by ammonium sulfate precipitation and gel filtration chromatography. The SGC are composed of two sections, the principal glands and accessory glands. The principal glands are further divided into the anterior lobes and posterior lobes. The SGC main enzyme was α-amylase, which hydrolyzed starch better than glycogen. The other carbohydrases were also present in the SGC complexes. Enzymatic activities toward mannose (α/β-mannosidases) were little in comparison to activities against glucose (α/β-glucosidases) and galactose (α/β-galactosidases), the latter being the greatest. Acid phosphatase showed higher activity than alkaline phosphatase. There was no measurable activity for lipase and aminopeptidase. Proteolytic activity was detected against general and specific protease substrates. Activities of all enzymes were increased in response to feeding in comparison to starved insects, revealing their induction and secretion in response to feeding pulse. The SGC amylases eluted in four major peaks and post-electrophoretic detection of the α-amylases demonstrated the existence of at least five isoamylases in the SGC. The physiological implication of these findings in pre-oral digestion of E. integriceps is discussed. Copyright © 2014 Académie des sciences. Published by Elsevier SAS. All rights reserved.

Short communication: Effect of casein haplotype on angiotensin-converting enzyme inhibitory and antioxidant capacities of milk casein from Italian Holstein cows before and following in vitro digestion with gastrointestinal enzymes.

PubMed

Perna, Annamaria; Simonetti, Amalia; Gambacorta, Emilio

2016-09-01

The aim of this work was to investigate the effect of casein haplotype (αS1, β, and κ) on antioxidative and angiotensin-converting enzyme (ACE) inhibitory capacities of milk casein from Italian Holstein cows before and following in vitro digestion with gastrointestinal enzymes. The antioxidant capacity was measured using 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid and ferric-reducing antioxidant power assays, whereas ACE inhibition was determined by ACE-inhibitory assay. The ACE-inhibitory and antioxidant capacities of milk casein increased during in vitro gastrointestinal digestion. Casein haplotype significantly influenced the antioxidative and ACE-inhibitory capacities of digested casein. In particular, BB-A(2)A(1)-AA casein and BB-A(1)A(1)-AA casein showed the highest ACE-inhibitory capacity, BB-A(2)A(2)-AA casein showed the highest antioxidant capacity, whereas BB-A(2)A(2)-BB casein showed the lowest biological capacity. To date, few studies have been done on the effect of casein haplotype on biological capacity of milk casein, thus the present study sets the basis for a new knowledge that could lead to the production of milk with better nutraceutical properties. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Nitrogen digestion and urea recycling in Hokkaido native horses fed hay-based diets.

PubMed

Obitsu, Taketo; Hata, Hiroshi; Taniguchi, Kohzo

2015-02-01

Nitrogen (N) digestion and urea-N metabolism in Hokkaido native horses fed roughage-based diets containing different types and levels of protein sources were studied. Horses (173 ± 4.8 kg) fitted with an ileum cannula were fed four diets consisting of 100% timothy hay (TH), 88% TH and 12% soybean meal (SBM), 79% TH and 21% SBM, and 51% TH and 49% alfalfa hay at 2.2% of body weight. Dietary protein content varied from 5% to 15% of dry matter. Apparent N digestibilities in the pre-cecum and total tract for the TH diet were lower than those for other diets. However, the proportion of post-ileum N digestion to N intake was not affected by the diets. Urea-N production was linearly related to N intake, but gut urea-N entry was not affected by the diets. The proportion of gut urea-N entry to urea-N production tended to be higher for the TH diet (57%) than the two SBM diets (39%). Anabolic use of urea-N entering the gut was not affected by the diets (20-36% of gut urea-N entry). These results indicate that urea-N recycling provides additional N sources for microbial fermentation in the hindgut of Hokkaido native horses fed low-quality roughages. © 2014 Japanese Society of Animal Science.

Critical Issues in Empirical Human Science: The Contribution of Phenomenology.

ERIC Educational Resources Information Center

Sexton-Hesse, Charlene A.

Issues that are central to science when the object of inquiry is the human being need clarification and analysis. These issues can be formulated as a question, such as, "How can researchers in adult and continuing education conduct research that is empirical human science; that is, how can they study human beings as persons with values, will,…

Solid-state anaerobic co-digestion of spent mushroom substrate with yard trimmings and wheat straw for biogas production.

PubMed

Lin, Yunqin; Ge, Xumeng; Li, Yebo

2014-10-01

Spent mushroom substrate (SMS) is a biomass waste generated from mushroom production. About 5 kg of SMS is generated for every kg of mushroom produced. In this study, solid state anaerobic digestion (SS-AD) of SMS, wheat straw, yard trimmings, and their mixtures was investigated at different feedstock to effluent ratios. SMS was found to be highly degradable, which resulted in inhibition of SS-AD due to volatile fatty acid (VFA) accumulation and a decrease in pH. This issue was addressed by co-digestion of SMS with either yard trimmings or wheat straw. SS-AD of SMS/yard trimmings achieved a cumulative methane yield of 194 L/kg VS, which was 16 and 2 times higher than that from SMS and yard trimmings, respectively. SS-AD of SMS/wheat straw obtained a cumulative methane yield of 269 L/kg VS, which was 23 times as high as that from SMS and comparable to that from wheat straw. Copyright © 2014 Elsevier Ltd. All rights reserved.

Metabolomic profiling of 13C-labelled cellulose digestion in a lower termite: insights into gut symbiont function

PubMed Central

Tokuda, Gaku; Tsuboi, Yuuri; Kihara, Kumiko; Saitou, Seikou; Moriya, Sigeharu; Lo, Nathan; Kikuchi, Jun

2014-01-01

Termites consume an estimated 3–7 billion tonnes of lignocellulose annually, a role in nature which is unique for a single order of invertebrates. Their food is digested with the help of microbial symbionts, a relationship that has been recognized for 200 years and actively researched for at least a century. Although DNA- and RNA-based approaches have greatly refined the details of the process and the identities of the participants, the allocation of roles in space and time remains unclear. To resolve this issue, a pioneer study is reported using metabolomics to chart the in situ catabolism of 13C-cellulose fed to the dampwood species Hodotermopsis sjostedti. The results confirm that the secretion of endogenous cellulases by the host may be significant to the digestive process and indicate that a major contribution by hindgut bacteria is phosphorolysis of cellodextrins or cellobiose. This study provides evidence that essential amino acid acquisition by termites occurs following the lysis of microbial tissue obtained via proctodaeal trophallaxis. PMID:25009054

Elimination of methane in exhaust gas from biogas upgrading process by immobilized methane-oxidizing bacteria.

PubMed

Wu, Ya-Min; Yang, Jing; Fan, Xiao-Lei; Fu, Shan-Fei; Sun, Meng-Ting; Guo, Rong-Bo

2017-05-01

Biogas upgrading is essential for the comprehensive utilization of biogas as substitute of natural gas. However, the methane in the biogas can be fully recovered during the upgrading process of biogas, and the exhaust gas produced during biogas upgrading may contain a very low concentration of methane. If the exhaust gas with low concentration methane releases to atmosphere, it will be harmful to environment. In addition, the utilization of large amounts of digestate produced from biogas plant is another important issue for the development of biogas industry. In this study, solid digestate was used to produce active carbon, which was subsequently used as immobilized material for methane-oxidizing bacteria (MOB) in biofilter. Biofilter with MOB immobilized on active carbon was used to eliminate the methane in exhaust gas from biogas upgrading process. Results showed porous active carbon was successfully made from solid digestate. The final methane elimination capacity of immobilized MOB reached about 13molh -1 m -3 , which was more 4 times higher than that of MOB without immobilization. Copyright © 2017 Elsevier Ltd. All rights reserved.

Dilemmas with Dilemmas...Exploring the Suitability of Dilemma Stories as a Way of Addressing Ethical Issues in Science Education.

ERIC Educational Resources Information Center

Settelmaier, Elisabeth

Traditionally, many science educators have taught science without addressing ethical questions. However, the inclusion of moral discourse in science teaching may help educators to bring to the fore problematic issues in relation to science, and it may offer an opportunity for students to practice their future engagement in the public discourse…

Turkish Preservice Science Teachers' Socioscientific Issues-Based Teaching Practices in Middle School Science Classrooms

ERIC Educational Resources Information Center

Genel, Abdulkadir; Topçu, Mustafa Sami

2016-01-01

Background: Despite a growing body of research and curriculum reforms including socioscientific issues (SSI) across the world, how preservice science teachers (PST) or in-service science teachers can teach SSI in science classrooms needs further inquiry. Purpose: The purpose of this study is to describe the abilities of PSTs to teach SSI in middle…

A quantitative study of the interactive effects of glycine and serine with threonine and choline on growth performance in broilers.

PubMed

Siegert, W; Ahmadi, H; Helmbrecht, A; Rodehutscord, M

2015-07-01

Differences in the optimal dietary concentrations of Gly (glycine) and Ser (serine) in broiler diets may be due to levels of endogenous Gly precursors that differ in literature. Therefore, we measured the extent of the interactive effects between equivalents of Gly and Ser (Glyequi) and the endogenous Gly precursors choline and Thr (threonine) on growth performance. A fractional central composite design included concentrations of 15-25 g/kg DM, 0.6-2.0 g/kg DM, and 6.4-10.4 g/kg DM for Glyequi, choline, and Thr, respectively, in 5 levels each. The various concentrations were achieved by adding Gly, choline chloride, and l-Thr to a basal mix. Except for 20 replicates of the central diet, all treatments were tested with 5 replicates, each with 10 birds. Food was provided for ad libitum consumption throughout the experiment. The data were evaluated using artificial neural networks. Digestibility was studied for selected diets using separate birds. Since average daily feed intake (ADFI) varied between replicates, the intake of prececal digestible Glyequi, choline, and prececal digestible Thr were more adequate independent variables than the dietary concentration of each amino acid. From d 1 to d 7, no treatment effects on G:F and average daily gain (ADG) were detected; subsequent results refer to the period from d 7 to d 21. Increasing prececal digestible Thr intake considerably decreased the need for prececal digestible Glyequi to achieve certain levels of G:F and ADG. The extent of this effect cannot be explained only by the endogenous metabolism of Thr to Gly. Since essential amino acids were present above the recommended levels, Thr probably limited performance, and excessive intake of other essential amino acids prompted a Gly-dissipating process. Choline exerted a considerable effect on the required intake of prececal digestible Glyequi and prececal digestible Thr to achieve certain levels of G:F and ADG. The results of this study partly explain the previously reported variations in response to dietary Thr, Gly, and Ser. © 2015 Poultry Science Association Inc.

Standardized Ileal Amino Acid Digestibility of Corn, Corn Distillers' Dried Grains with Solubles, Wheat Middlings, and Bakery By-Products in Broilers and Laying Hens.

PubMed

Adedokun, S A; Jaynes, P; Payne, R L; Applegate, T J

2015-10-01

Standardized ileal amino acid digestibility (SIAAD) of 5 samples of corn distillers dried grain with solubles (DDGS), 5 samples of bakery by-products (BBP), 3 samples of corn, and 1 sample of wheat middlings (WM) were evaluated in broilers and laying hens. Diets containing each of the 14 feed ingredients were evaluated in 21 day-old broiler chickens. The DDGS and BBP containing diets were fed to 30-week-old laying hens, while corn and wheat middling were evaluated in 50-week-old laying hens. All the diets were semi-purified with each feed ingredient being the only source of amino acid (AA). To obtain SIAAD values, apparent ileal AA digestibility was corrected for basal ileal endogenous AA losses using values generated from broilers and laying hens fed a nitrogen-free diet. Ileal crude protein digestibility for the 5 DDGS samples was higher (P < 0.05) in broilers than in laying hens. Broilers had higher SIAAD for DDGS 2, 3, 4, and 5 while there was no difference for DDGS 1 except for 4 AA where broilers had higher (P < 0.05) SIAAD values. Standardized ileal AA digestibility values for broilers were higher (P < 0.05) for BBP 1 and 4. Ileal CP digestibility for corn 1 was higher (P < 0.05) for broilers compared to laying hens, and SIAAD values for the 16 AA (9 indispensable and 7 dispensable) evaluated in this study were higher (P < 0.05) in broilers. Broilers had higher (P < 0.05) SIAAD values for 4 (histidine, leucine, phenylalanine, and valine) and 6 (histidine, leucine, methionine, phenylalanine, threonine, and valine) indispensable and 3 (cysteine, glutamic acid, and proline) and 4 (cysteine, glutamic acid, proline, and serine) dispensable AA for corn 2 and corn 3, respectively. No difference in SIAAD between broilers and laying hens was observed for WM. Results from this study confirm that high variability in digestibility exists between different samples of DDGS. Differences in SIAAD between broilers and laying hens were observed in some samples of DDGS and BBP. © 2015 Poultry Science Association Inc.

Effects of Saccharomyces cerevisiae fermentation product on ruminal starch digestion are dependent upon dry matter intake for lactating cows.

PubMed

Allen, M S; Ying, Y

2012-11-01

This experiment was conducted to evaluate ruminal digestion responses to Saccharomyces cerevisiae fermentation product (SCFP) supplementation and to determine if responses are influenced by voluntary feed intake. Fifteen ruminally and duodenally cannulated Holstein cows with a wide range in preliminary dry matter intake (pDMI; 20.1 to 31.0 kg/d) measured during a 14-d preliminary period were used in a crossover design experiment. Treatments were SCFP and control (a mix of dry ground corn and soybean meal), top-dressed at the rate of 56 g/d per head. The base diet contained 28% NDF, 30% starch, and 16.5% CP and included corn silage, alfalfa silage, high-moisture corn, protein supplement, and a mineral and vitamin supplement. Treatment periods were 28 d, with the final 8d used for sample and data collection. Voluntary dry matter intake was determined during the last 4d of the preliminary period. Ruminal digestion kinetics were determined using the pool-and-flux method. Main effects of SCFP treatment and their interaction with pDMI were tested by ANOVA. An interaction was detected between SCFP treatment and pDMI for ruminal digestion rate of starch; SCFP increased the rate of starch digestion compared with the control for cows with pDMI below 26 kg/d and decreased it for cows with higher pDMI. This resulted in an interaction between treatment and pDMI for turnover rate of starch in the rumen and true and apparent ruminal starch digestibility because passage rate of starch from the rumen was not affected by treatment (mean=24.3%/h). Ruminal pH (mean=6.0), dry matter intake, milk yield and component percentages were not affected by treatment or its interaction with pDMI. Supplementation of SCFP reduced the rate of ruminal starch digestion for cows with higher feed intake, which could help stabilize the ruminal environment when large amounts of starch are consumed to support higher milk production. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Saudi Science Teachers' Views and Teaching Strategies of Socioscientific Issues

NASA Astrophysics Data System (ADS)

Alamri, Aziz S.

Scientific developments such as cloning and nuclear energy have generated many controversial issues pertain to many political, social, environmental, ethical and cultural values in different societies around the globe. These controversies delimited and encircled the potential of including and teaching some important aspects of science in schools and therefore caused less consideration to the influence of these issues on enhancing the scientific literacy of people in general. The purpose of this study was to investigate how Saudi science teachers in the city of Tabuk in Saudi Arabia view and teach SSI in Saudi Arabia. This study employed semi-structured interviews with Saudi science teachers. Methodologically, this study used a constructivist grounded theory as a method for analysis to generate in-depth descriptive data about Saudi science teachers' views and teaching strategies of socio-scientific issues. Some direct and indirect benefits pertain to teaching science, understanding the relationship between science, religion, and society and some other topics are discussed in this study.

Estimation of the optimum digestible lysine level for Cherry Valley ducks.

PubMed

Zhou, Y F; Liu, Y Q; Wei, H K; Peng, J

2017-04-01

The aim of the current study was to determine the digestible lysine (DLys) requirement of Cherry Valley ducks from 1 to 14 d and from 15 to 35 d of age. One-day-old male Cherry Valley ducks (n = 320) were divided randomly and evenly into five treatments with 8 replicates of 8 birds. Ducks were fed adequate levels of digestible amino acid but with graded levels of DLys: 0.80, 0.88, 0.96, 1.04, and 1.12% from 1 to 14 d; 0.60, 0.68, 0.76, 0.84, and 0.92% from 15 to 35 d. At 35 d of age, 8 ducks per treatment were slaughtered for evaluating the yields of abdominal fat, subcutaneous fat, breast meat, and leg meat. Additionally, a 7-d metabolizable experiment was conducted with ducks of the same hatch beginning on d 35 (8 ducks per treatment). The results showed that the DLys level in diet had a quadratic relationship both with the average daily gain (ADG) and feed:gain ratio (F/G). According to the quadratic model, an optimum digestible lysine level was 0.948% from 0 to 14 d and 0.758% from 15 to 35 d based on ADG. The digestible lysine level for obtaining minimum F/G were 0.986% (0 ∼ 14 d) and 0.792% (15 ∼ 35 d), respectively. Breast meat yield (P = 0.110) and subcutaneous fat percentage (P = 0.021) showed a quadratic or linear response to the increasing dietary DLys level. To achieve maximum breast meat yield, the digestible lysine level of 0.961% and 0.761% were needed for the starter period (1 ∼ 14 d) and the growth period (14 ∼ 35 d), respectively. N excretion showed a quadratic response to the increasing dietary DLys level (P = 0.103). The results of the current study suggested that the optimum digestible lysine level was very different with the response criterion. The dietary digestible lysine levels were 0.948, 0.961% in the starter period (1 ∼ 14 d) and 0.758, 0.761% in the growth period (15 ∼ 35 d) for ADG, F/G, respectively. © 2016 Poultry Science Association Inc.

Accelerator science and technology in Europe: EuCARD 2012

NASA Astrophysics Data System (ADS)

Romaniuk, Ryszard S.

2012-05-01

Accelerator science and technology is one of a key enablers of the developments in the particle physic, photon physics and also applications in medicine and industry. The paper presents a digest of the research results in the domain of accelerator science and technology in Europe, shown during the third annual meeting of the EuCARD - European Coordination of Accelerator Research and Development. The conference concerns building of the research infrastructure, including in this advanced photonic and electronic systems for servicing large high energy physics experiments. There are debated a few basic groups of such systems like: measurement - control networks of large geometrical extent, multichannel systems for large amounts of metrological data acquisition, precision photonic networks of reference time, frequency and phase distribution.

Presented by REL Pacific at McREL: A Summary of Cross-Regional Educational Laboratory Studies. Research Digest

ERIC Educational Resources Information Center

Regional Educational Laboratory Pacific, 2013

2013-01-01

REL Pacific at McREL, 1 of 10 Regional Educational Laboratories (RELs) funded by the Institute of Education Sciences (IES), serves educators in American Samoa, the Commonwealth of the Northern Mariana Islands, the Federated States of Micronesia (Chuuk, Kosrae, Pohnpei, and Yap), Guam, Hawai'i, the Republic of the Marshall Islands, and the Republic…

The Stickybear Reading Comprehension Series: Science. School Version with Lesson Plans for Ages 7-10. Volume 1. Stickybear Software.

ERIC Educational Resources Information Center

1996

This software product presents multi-level stories to capture the interest of children in grades two through five, while teaching them crucial reading comprehension skills. With stories touching on everything from the invention of velcro to the journey of food through the digestive system, the open-ended reading comprehension program is versatile…

Presented by REL Pacific at McREL: Available Resources and Work in Progress. Research Digest. [Volume 1

ERIC Educational Resources Information Center

Regional Educational Laboratory Pacific, 2014

2014-01-01

REL Pacific at McREL, one of 10 Regional Educational Laboratories (RELs) funded by the Institute of Education Sciences (IES), serves educators in American Samoa, the Commonwealth of the Northern Mariana Islands, the Federated States of Micronesia (Chuuk, Kosrae, Pohnpei, and Yap), Guam, Hawai'i, the Republic of the Marshall Islands, and the…

Presented by REL Pacific at McREL: Available Resources and Work in Progress. Research Digest. Volume 2

ERIC Educational Resources Information Center

Regional Educational Laboratory Pacific, 2014

2014-01-01

REL Pacific at McREL, one of 10 Regional Educational Laboratories (RELs) funded by the U.S. Department of Education's Institute of Education Sciences (IES), serves educators in American Samoa, the Commonwealth of the Northern Mariana Islands, the Federated States of Micronesia (Chuuk, Kosrae, Pohnpei, and Yap), Guam, Hawai'i, the Republic of the…

New plastic recycling technology | Science Inventory | US EPA

EPA Pesticide Factsheets

Greater than 60% of the total plastic content of municipal solid waste is comprised of polyolefins (high-density, low-density, and linear polyethylene and polypropylene. Polyethylene (PE) is the largest-volume component but presents a challenge due to the absence of low-energy degradation processes. This news column provides a digest of recent technical reports relating to clean technology and environmental policy,

Handbook of School-Based Interventions: Resolving Student Problems and Promoting Healthy Educational Environments. Jossey-Bass Social and Behavioral Science Series.

ERIC Educational Resources Information Center

Cohen, Jeffrey J.; Fish, Marian C.

This handbook describes interventions for the major behavior problems that students may exhibit from kindergarten through high school. The book is a compilation of nontechnical summaries of intervention strategies with demonstrated or potential value for school settings. The summaries are digested from journal articles and other publications. The…

Potential Role of Circulating MiR-21 in the Diagnosis and Prognosis of Digestive System Cancer: A Systematic Review and Meta-Analysis.

PubMed

Yin, Chengqiang; Zhou, Xiaoying; Dang, Yini; Yan, Jin; Zhang, Guoxin

2015-12-01

Recent evidences indicate that circulating microRNAs (miRNAs) exhibit aberrant expression in the plasma of patients suffering from cancer compared to normal individuals, suggesting that it may be a useful noninvasion diagnostic method. MiR-21 plays crucial roles in carcinogenesis and can be served as a biomarker for the detection of various cancers. Therefore, the aim of this meta-analysis is to assess the potential role of miR-21 for digestive system cancer. By searching the PubMed, Embase, and Web of Science for publications concerning the diagnostic value of miR-21 for digestive system cancer, total of 23 publications were included in this meta-analysis. Receiver operating characteristic curves (ROC) were used to check the overall test performance. For prognostic meta-analysis, pooled hazard ratios (HRs) of circulating miR-21 for survival were calculated. Totally 23 eligible publications were included in this meta-analysis (15 articles for diagnosis and 8 articles for prognosis). For diagnostic meta-analysis, the summary estimates revealed that the pooled sensitivity and specificity were 0.76 (95% CI = 0.70-0.82) and 0.84 (95% CI = 0.78-0.89). Besides, the area under the summary ROC curve (AUC) is 0.87. For prognostic meta-analysis, the pooled HR of higher miR-21 expression in circulation was 1.94 (95% CI = 0.99-3.82, P = 0.055), which indicated higher miR-21 expression could be likely to predict poorer survival in digestive system cancer. The subgroup analysis implied the higher expression of miR-21 was correlated with worse overall survival in the Asian population in digestive system cancer (HR = 2.41, 95% CI = 1.21-4.77, P = 0.012). The current evidence suggests circulating miR-21 may be suitable to be a diagnostic and prognostic biomarker for digestive system cancer in the Asians.

A mechanistic model of small intestinal starch digestion and glucose uptake in the cow.

PubMed

Mills, J A N; France, J; Ellis, J L; Crompton, L A; Bannink, A; Hanigan, M D; Dijkstra, J

2017-06-01

The high contribution of postruminal starch digestion (up to 50%) to total-tract starch digestion on energy-dense, starch-rich diets demands that limitations to small intestinal starch digestion be identified. A mechanistic model of the small intestine was described and evaluated with regard to its ability to simulate observations from abomasal carbohydrate infusions in the dairy cow. The 7 state variables represent starch, oligosaccharide, glucose, and pancreatic amylase in the intestinal lumen, oligosaccharide and glucose in the unstirred water layer at the intestinal wall, and intracellular glucose of the enterocyte. Enzymatic hydrolysis of starch was modeled as a 2-stage process involving the activity of pancreatic amylase in the lumen and of oligosaccharidase at the brush border of the enterocyte confined within the unstirred water layer. The Na + -dependent glucose transport into the enterocyte was represented along with a facilitative glucose transporter 2 transport system on the basolateral membrane. The small intestine is subdivided into 3 main sections, representing the duodenum, jejunum, and ileum for parameterization. Further subsections are defined between which continual digesta flow is represented. The model predicted nonstructural carbohydrate disappearance in the small intestine for cattle unadapted to duodenal infusion with a coefficient of determination of 0.92 and a root mean square prediction error of 25.4%. Simulation of glucose disappearance for mature Holstein heifers adapted to various levels of duodenal glucose infusion yielded a coefficient of determination of 0.81 and a root mean square prediction error of 38.6%. Analysis of model behavior identified limitations to the efficiency of small intestinal starch digestion with high levels of duodenal starch flow. Limitations to individual processes, particularly starch digestion in the proximal section of the intestine, can create asynchrony between starch hydrolysis and glucose uptake capacity. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Effects of dietary carbohydrates on rumen epithelial metabolism of nonlactating heifers.

PubMed

Argov-Argaman, N; Eshel, O; Moallem, U; Lehrer, H; Uni, Z; Arieli, A

2012-07-01

Ruminal wall metabolism was studied in nonlactating heifers by altering the carbohydrate (CHO) digestion site between rumen and intestine. The CHO digestion site was estimated from in situ and total-tract digestibility of control (CONT) diets and diets supplemented with corn (CRN), barley (BARL), or soy hulls (SOYH). Ruminal epithelial metabolism regulating gene expression, morphology, and nutrient delivery was assessed from a combination of rumen volatile fatty acid (VFA) concentration, biopsies for papilla morphology, and expression of putative metabolic regulatory genes encoding enzymes that facilitate VFA utilization. Digestible dry matter and CHO intake were 25 and 45% higher, respectively, in the supplemented diets than in CONT diets. Fiber supplementation increased the intestinal and decreased ruminal CHO digestion. Ruminal nonfiber CHO digestibility was 10% lower in CRN than with the high rumen-degradable supplement. The CONT heifers had lowest total ruminal VFA and highest acetate concentration relative to the other treatments. Total VFA concentration in BARL and CRN diets tended to be higher than in SOYH. The SOYH diet tended to reduce papilla dimension relative to CRN and BARL. The CRN diet tended to increase papilla surface area relative to BARL and SOYH. Gene expression of propionyl-coenzyme A carboxylase was higher in CRN and BARL than in SOYH diets, and tended to be higher in CRN than in BARL and SOYH diets. Lactate dehydrogenase and butyryl coenzyme A synthase gene transcripts tended to be higher in CONT than in the supplemented treatments. Thus, rumen epithelial expression of genes involved in VFA metabolism and ruminal wall-structure development are influenced by other regulatory mechanism that is not directly affected by local signals. The in situ methods used are a useful tool for differentiating ruminal from extraruminal nutrient supply. Copyright © 2012 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Endogenous cellulolytic enzyme systems in the longhorn beetle Mesosa myops (Insecta: Coleoptera) studied by transcriptomic analysis.

PubMed

Liu, Jie; Song, Keqing; Teng, Huajing; Zhang, Bin; Li, Wenzhu; Xue, Huaijun; Yang, Xingke

2015-09-01

The Cerambycidae (longhorn beetle) is a large family of Coleoptera with xylophagous feeding habits. Cellulose digestion plays an important role in these wood-feeding insects. In this study, transcriptomic technology was used to obtain one glycoside hydrolase family 45 (GH45) cellulase and seven GH5 cellulases from Mesosa myops, a typical longhorn beetle. Analyses of expression dynamics and evolutionary relationships provided a complete description of the cellulolytic system. The expression dynamics related to individual development indicated that endogenous GH45 and GH5 cellulases dominate cellulose digestion in M. myops. Evolutionary analyses suggested that GH45 cellulase gene is a general gene in the Coleoptera Suborder Polyphaga. Evolutionary analyses also indicated that the GH5 cellulase group in Lamiinae longhorn beetles is closely associated with wood feeding. This study demonstrated that there is a complex endogenous cellulolytic system in M. myops that is dominated by cellulases belonging to two glycoside hydrolase families. © The Author 2015. Published by ABBS Editorial Office in association with Oxford University Press on behalf of the Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences.

My Summer with Science Policy

NASA Astrophysics Data System (ADS)

Murray, Marissa

This past summer I interned at the American Institute of Physics and helped research and write articles for the FYI Science Policy Bulletin. FYI is an objective digest of science policy developments in Washington, D.C. that impact the greater physical sciences community. Over the course of the summer, I independently attended, analyzed, and reported on a variety of science, technology, and funding related events including congressional hearings, government agency advisory committee meetings, and scientific society events. I wrote and co-wrote three articles on basic energy research legislation, the National Institute of Standards and Technology improvement act, and the National Science Foundation's big ideas for future investment. I had the opportunity to examine some challenging questions such as what is the role of government in funding applied research? How should science priorities be set? What is the right balance of funding across different agencies and programs? I learned about how science policy is a two-way street: science is used to inform policy decisions and policy is made to fund and regulate the conduct of science. I will conclude with how my summer working with FYI showed me the importance of science advocacy, being informed, and voting. Society of Physics Students.

Comparing the effect of homogenization and heat processing on the properties and in vitro digestion of milk from organic and conventional dairy herds.

PubMed

Van Hekken, D L; Tunick, M H; Ren, D X; Tomasula, P M

2017-08-01

We compared the effects of homogenization and heat processing on the chemical and in vitro digestion traits of milk from organic and conventional herds. Raw milk from organic (>50% of dry matter intake from pasture) and conventional (no access to pasture) farms were adjusted to commercial whole and nonfat milk fat standards, and processed with or without homogenization, and with high-temperature-short-time or UHT pasteurization. The milk then underwent in vitro gastrointestinal digestion. Comparison of milk from organic and conventional herds showed that the milks responded to processing in similar ways. General composition was the same among the whole milk samples and among the nonfat milk samples. Protein profiles were similar, with intact caseins and whey proteins predominant and only minor amounts of peptides. Whole milk samples from grazing cows contained higher levels of α-linolenic (C18:3), vaccenic (C18:1 trans), and conjugated linoleic acids, and lower levels of palmitic (C16:0) and stearic (C18:0) acids than samples from nongrazing cows. Processing had no effect on conjugated linoleic acid and linolenic acid levels in milk, although homogenization resulted in higher levels of C8 to C14 saturated fatty acids. Of the 9 volatile compounds evaluated, milk from grazing cows contained lower levels of 2-butanone than milk from nongrazing cows, and milk from both farms showed spikes for heptanal in UHT samples and spikes for butanoic, octanoic, nonanoic, and N-decanoic acids in homogenized samples. At the start of in vitro digestion, nonfat raw and pasteurized milk samples formed the largest acid clots, and organic milk clots were larger than conventional milk clots; UHT whole milk formed the smallest clots. Milk digests from grazing cows had lower levels of free fatty acids than digests from nongrazing cows. In vitro proteolysis was similar in milk from both farms and resulted in 85 to 95% digestibility. Overall, milk from organic/grass-fed and conventional herds responded in similar ways to typical homogenization and heat processing used in United States dairy plants and showed only minor differences in chemical traits and in vitro digestion. Findings from this research enhance our knowledge of the effect of processing on the quality traits and digestibility of milk from organic/pasture-fed and confined conventional herds and will help health-conscious consumers make informed decisions about dairy selections. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Life cycle assessment of energy from waste via anaerobic digestion: a UK case study.

PubMed

Evangelisti, Sara; Lettieri, Paola; Borello, Domenico; Clift, Roland

2014-01-01

Particularly in the UK, there is potential for use of large-scale anaerobic digestion (AD) plants to treat food waste, possibly along with other organic wastes, to produce biogas. This paper presents the results of a life cycle assessment to compare the environmental impacts of AD with energy and organic fertiliser production against two alternative approaches: incineration with energy production by CHP and landfill with electricity production. In particular the paper investigates the dependency of the results on some specific assumptions and key process parameters. The input Life Cycle Inventory data are specific to the Greater London area, UK. Anaerobic digestion emerges as the best treatment option in terms of total CO2 and total SO2 saved, when energy and organic fertiliser substitute non-renewable electricity, heat and inorganic fertiliser. For photochemical ozone and nutrient enrichment potentials, AD is the second option while incineration is shown to be the most environmentally friendly solution. The robustness of the model is investigated with a sensitivity analysis. The most critical assumption concerns the quantity and quality of the energy substituted by the biogas production. Two key issues affect the development and deployment of future anaerobic digestion plants: maximising the electricity produced by the CHP unit fuelled by biogas and to defining the future energy scenario in which the plant will be embedded. Copyright © 2013 Elsevier Ltd. All rights reserved.

The Contemporary Issues Module: Its Use in the Science Methods Class

ERIC Educational Resources Information Center

Kuhn, David J.

1973-01-01

Author conducts preservice education for science teachers by engaging students in modules stressing contemporary issues. Basic features of the modules include providing individualized instruction and stressing the interdisciplinary aspects of pure applied and social sciences. (PS)

CDC Vital Signs: Prescription Painkiller Overdoses (Methadone)

MedlinePlus

... or www.samhsa.gov/treatment/ ). Top of Page Science Behind the Issue MMWR Science Clips Related Pages Vital Signs Issue details: Morbidity ... factsheet [PDF – 1.34 MB] Read the MMWR Science Clips File Formats Help: How do I view ...

Science/Technology/Society: Model Lessons for Secondary Science Classes.

ERIC Educational Resources Information Center

Pearson, Janice V., Ed.

This volume contains 35 lessons designed to be used in secondary science classes to introduce the science/technology/society (STS) themes and issues. While the first 11 lessons focus on general STS themes, the other 24 lessons cover specific STS issues that fall under such categories as population growth, water resources, world hunger, food…

Domesticating Biotechnology: How London's Science Museum Has Framed the Controversy.

ERIC Educational Resources Information Center

Levidow, Les

1998-01-01

Exhibits in London's Science Museum are critiqued in this discussion of the problem of balance in presenting controversial issues in museum exhibits. Science museums claim to portray controversial issues in a neutral manner, but neutrality is impossible. Asks how science museums can involve visitors in the controversy and how the museum's role can…

How Science, Technology and Society Issues Are Presented in Science Textbooks.

ERIC Educational Resources Information Center

Hamm, Mary; Adams, Dennis

1988-01-01

Ten science textbooks (4,393 pages) for grades 6 and 7 were examined for their treatment of five top-ranked global problem issues (population growth, war technology, world hunger and food resources, air quality and atmosphere, and water resources). Implications for science education curricula from this content analysis are discussed. (SLD)

Science is Elementary, A Science Teaching Resource Publication, 1992-1993.

ERIC Educational Resources Information Center

Science is Elementary, 1993

1993-01-01

These resource magazines for K-6 educators are published to promote the teaching of science, mathematics, and technology through participatory, inquiry-based methods. Each issue provides resources and hands-on activities for educators that focus on one theme. Issues in volume 5 cover the themes of geology, math and science integration, tropical…

Individuals with greater science literacy and education have more polarized beliefs on controversial science topics.

PubMed

Drummond, Caitlin; Fischhoff, Baruch

2017-09-05

Although Americans generally hold science in high regard and respect its findings, for some contested issues, such as the existence of anthropogenic climate change, public opinion is polarized along religious and political lines. We ask whether individuals with more general education and greater science knowledge, measured in terms of science education and science literacy, display more (or less) polarized beliefs on several such issues. We report secondary analyses of a nationally representative dataset (the General Social Survey), examining the predictors of beliefs regarding six potentially controversial issues. We find that beliefs are correlated with both political and religious identity for stem cell research, the Big Bang, and human evolution, and with political identity alone on climate change. Individuals with greater education, science education, and science literacy display more polarized beliefs on these issues. We find little evidence of political or religious polarization regarding nanotechnology and genetically modified foods. On all six topics, people who trust the scientific enterprise more are also more likely to accept its findings. We discuss the causal mechanisms that might underlie the correlation between education and identity-based polarization.

The Possibility of a Contracting Science

DTIC Science & Technology

1986-12-01

SCIENCE 58 G. SUMMARY 59 IV. SOCIAL SCIENCE ISSUES 61 A. INTRODUCTION 61 B. EVOLUTION 62 C. BEHAVIORAL SCIENCE ISSUES 66 D. ACHIEVEMENTS OF SCIENCE 7 6 E...for this phase. The second phase involved the selection and examination of disciplines in the social science field that had gone 14 through or were...environmental abuses, promote health, education and scientific progress, assimilate 24 underprivileged groups into the mainstream of social life and so on

Responses of dietary ileal amino acid digestibility to consumption of different cultivars of potatoes and conventional fibers in grower pigs fed a high-fat basal diet.

PubMed

Wang, Q; Yang, X; Leonard, S; Archbold, T; Sullivan, J A; Duncan, A M; Ma, W D L; Bizimungu, B; Murphy, A; Htoo, J K; Fan, M Z

2012-12-01

Whereas dietary fibers are well recognized for nutritional management of human health issues, fiber is also known to be one of the dietary factors potentially affecting digestive use of dietary proteins. As a staple food, potato (Solanum tuberosum) may be a significant dietary fiber source. The objective of this study was to examine effects of dietary supplementation of six potato cultivar-genotype samples that differ in soluble fiber content and two conventional fiber components (i.e., cellulose and guar gum) on the apparent ileal AA digestibility in pigs fed a high-fat basal diet. The basal diet was formulated as a zero-fiber negative control (NC) to contain 41.5% poultry meal, 4% casein, 15% animal fat-oil blend, 2.8% sucrose, 31% corn (Zea mays) starch, 0.50% salt, and 0.40% trace mineral-vitamin supplement with fat contributing to 47% of the dietary GE. The two fiber diets were formulated by respectively diluting the basal diet with 10% guar gum and 10% cellulose at the expense of corn starch. Six other test diets were formulated by including 8.5% guar gum and further diluting the basal diet with 25.1% one of the six cultivar-genotype samples of dehydrated potato tuber powder to contain about 10% total dietary fiber at the expense of corn starch. Eighty-one 25-kg barrows were fitted with a simple T-cannula at the distal ileum and fed the diets according to a completely randomized block design with each block lasting 28 d. Compared with the NC, the ileal digestibility of Ala, Gly, and Pro were decreased (P < 0.05) by 10% guar gum whereas the digestibility of Gly was reduced (P < 0.05) by 10% cellulose. The ileal digestibility of several AA was decreased (P < 0.05) by the test potatoes plus 8.5% guar gum compared with the NC. Our results suggest that dietary inclusion of fiber at 10% from guar gum and cellulose and contributed by potatoes may adversely affect digestive use of dietary protein.

XPA A23G polymorphism and risk of digestive system cancers: a meta-analysis.

PubMed

He, Lei; Deng, Tao; Luo, Hesheng

2015-01-01

Several studies have reported an association between the A23G polymorphism (rs 1800975) in the xeroderma pigmentosum group A (XPA) gene and risk of digestive system cancers. However, the results are inconsistent. In this study, we performed a meta-analysis to assess the association between XPA A23G polymorphism and the risk of digestive system cancers. Relevant studies were identified using the PubMed, Web of Science, China National Knowledge Infrastructure, WanFang, and VIP databases up to August 30, 2014. The pooled odds ratio (OR) with a 95% confidence interval (CI) was calculated using the fixed or random effects model. A total of 18 case-control studies from 16 publications with 4,170 patients and 6,929 controls were included. Overall, no significant association was found between XPA A23G polymorphism and the risk of digestive system cancers (dominant model: GA + AA versus GG, OR 0.89, 95% CI 0.74-1.08; recessive model: AA versus GA + GG, OR 0.94, 95% CI 0.74-1.20; GA versus GG, OR 0.89, 95% CI 0.77-1.03; and AA versus GG, OR 0.87, 95% CI 0.64-1.19). When the analysis was stratified by ethnicity, similar results were observed among Asians and Caucasians in all genetic models. In stratified analysis based on tumor type, we also failed to detect any association between XPA A23G polymorphism and the risk of esophageal, gastric, or colorectal cancers. This meta-analysis indicates that the XPA A23G polymorphism is not associated with a risk of digestive system cancers.

Effects of digestion, chemical separation, and deposition on Po-210 quantitative analysis

DOE Office of Scientific and Technical Information (OSTI.GOV)

Seiner, Brienne N.; Morley, Shannon M.; Beacham, Tere A.

Polonium-210 is a radioactive isotope often used to study sedimentation processes, food chains, aerosol behavior, and atmospheric circulations related to environmental sciences. Materials for the analysis of Po-210 range from tobacco leaves or cotton fibers, to soils and sediments. The purpose of this work was to determine polonium losses from a variety of sample types (soil, cotton fiber, and air filter) due to digestion technique, chemical separation, and deposition method for alpha energy analysis. Results demonstrated that yields from a perchloric acid wet-ash were similar to that from a microwave digestion. Both were greater than the dry-ash procedure. The poloniummore » yield from the perchloric acid wet ash was 87 ± 5%, the microwave digestion had a yield of 100 ± 7%, and the dry ash had a yield of 38 ± 5%. The chemical separation of polonium by an anion exchange resin was used only on the soil samples due to the complex nature of this sample. The yield of Po-209 tracer after chemical separation and deposition for alpha analysis was 83 ± 7% for the soil samples. Spontaneous deposition yields for the cotton and air filters were 87 ± 4% and 92 ± 6%, respectively. Based on the overall process yields for each sample type the amount of Po-210 was quantified using alpha energy analysis. The soil contained 0.18 ± 0.08 Bq/g, the cotton swipe contained 0.7 mBq/g, and the air filter contained 0.04 ± 0.02 mBq/g. High and robust yields of polonium are possible using a suitable digestion, separation, and deposition method.« less

A HyperSpectral Imaging (HSI) approach for bio-digestate real time monitoring

NASA Astrophysics Data System (ADS)

Bonifazi, Giuseppe; Fabbri, Andrea; Serranti, Silvia

2014-05-01

One of the key issues in developing Good Agricultural Practices (GAP) is represented by the optimal utilisation of fertilisers and herbicidal to reduce the impact of Nitrates in soils and the environment. In traditional agriculture practises, these substances were provided to the soils through the use of chemical products (inorganic/organic fertilizers, soil improvers/conditioners, etc.), usually associated to several major environmental problems, such as: water pollution and contamination, fertilizer dependency, soil acidification, trace mineral depletion, over-fertilization, high energy consumption, contribution to climate change, impacts on mycorrhizas, lack of long-term sustainability, etc. For this reason, the agricultural market is more and more interested in the utilisation of organic fertilisers and soil improvers. Among organic fertilizers, there is an emerging interest for the digestate, a sub-product resulting from anaerobic digestion (AD) processes. Several studies confirm the high properties of digestate if used as organic fertilizer and soil improver/conditioner. Digestate, in fact, is somehow similar to compost: AD converts a major part of organic nitrogen to ammonia, which is then directly available to plants as nitrogen. In this paper, new analytical tools, based on HyperSpectral Imaging (HSI) sensing devices, and related detection architectures, is presented and discussed in order to define and apply simple to use, reliable, robust and low cost strategies finalised to define and implement innovative smart detection engines for digestate characterization and monitoring. This approach is finalized to utilize this "waste product" as a valuable organic fertilizer and soil conditioner, in a reduced impact and an "ad hoc" soil fertilisation perspective. Furthermore, the possibility to contemporary utilize the HSI approach to realize a real time physicalchemical characterisation of agricultural soils (i.e. nitrogen, phosphorus, etc., detection) could allow to set up "real time" selective fertilization strategies in order to obtain a safer culture production.

Special Section: Complementary and Alternative Medicine (CAM): Acupuncture From Ancient Practice to Modern Science

MedlinePlus

... Home Current Issue Past Issues Special Section CAM Acupuncture From Ancient Practice to Modern Science Past Issues / ... percent of U.S. adults use acupuncture. What Is Acupuncture? Dr. Adeline Ge adjusts placement of acupuncture needles ...

Effect of lignin linkages with other plant cell wall components on in vitro and in vivo neutral detergent fiber digestibility and rate of digestion of grass forages.

PubMed

Raffrenato, E; Fievisohn, R; Cotanch, K W; Grant, R J; Chase, L E; Van Amburgh, M E

2017-10-01

The objective of this study was to correlate in vitro and in vivo neutral detergent fiber (NDF) digestibility (NDFD) with the chemical composition of forages and specific chemical linkages, primarily ester- and ether-linked para-coumaric (pCA) and ferulic acids (FA) in forages fed to dairy cattle. The content of acid detergent lignin (ADL) and its relationship with NDF does not fully explain the observed variability in NDFD. The ferulic and p-coumaric acid linkages between ADL and cell wall polysaccharides, rather than the amount of ADL, might be a better predictor of NDFD. Twenty-three forages, including conventional and brown midrib corn silages and grasses at various stages of maturity were incubated in vitro for measurement of 24-h and 96-h NDFD. Undigested and digested residues were analyzed for NDF, acid detergent fiber (ADF), ADL, and Klason lignin (KL); ester- and ether-linked pCA and FA were determined in these fractions. To determine whether in vitro observations of ester- and ether-linked pCA and FA and digestibility were similar to in vivo observations, 3 corn silages selected for digestibility were fed to 6 ruminally fistulated cows for 3 wk in 3 iso-NDF diets. Intact samples and NDF and ADF residues of diet, rumen, and feces were analyzed for ester- and ether-linked pCA and FA. From the in vitro study, the phenolic acid content (total pCA and FA) was highest for corn silages, and overall the content of ester- and ether-linked pCA and FA in both NDF and ADF residues were correlated with NDF digestibility parameters, reflecting the competitive effect of these linkages on digestibility. Also, Klason lignin and ADL were negatively correlated with ether-linked ferulic acid on an NDF basis. Overall, esterified FA and esterified pCA were negatively correlated with all of the measured fiber fractions on both a dry matter and an NDF basis. The lignin content of the plant residues and chemical linkages explained most of the variation in both rate and extent of NDF digestion but not uniformly among forages, ranging from 56 to 99%. The results from the in vivo study were similar to the in vitro data, demonstrating the highest total-tract aNDF digestibility (70%; NDF analysis conducted with α-amylase and sodium sulfite) for cows fed the corn silage with the lowest ester- and ether-linked pCA content in the NDF fraction. In this study, digestibility of forage fiber was influenced by the linkages among lignin and the carbohydrate moieties, which vary by hybrid and species and most likely vary by the agronomic conditions under which the plant was grown. Copyright © 2017 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

Soybean hull and enzyme inclusion effects on diet digestibility and growth performance in beef steers consuming corn-based diets.

PubMed

Russell, J R; Sexten, W J; Kerley, M S

2016-06-01

A beef feedlot study was conducted to determine the effects of increasing soybean hull (SH) inclusion and enzyme addition on diet digestibility and animal performance. The hypothesis was SH inclusion and enzyme addition would increase fiber digestibility with no negative effect on animal performance. Eight treatments (TRT) were arranged in a 4 × 2 factorial using four diets and two enzyme (ENZ) inclusion rates. The diets were composed primarily of whole shell corn (WSC) with 0%, 7%, 14%, or 28% SH replacing corn. The ENZ was a commercial proprietary mix of , and (Cattlemace, R&D Life Sciences, Menomonie, WI) included in the diets at 0% (S0, S7, S14, S28) or 0.045% DM basis (S0e, S7e, S14e, S28e). Eighty steers (287 ± 31 kg, SD) were stratified by weight and blocked into pens with 1 heavy and 1 light pen per TRT (2 pen/TRT, 5 steers/pen). Steers were fed for 70 d with titanium dioxide included in the diets for the final 15 d. Fecal samples were collected on d 70 to determine diet digestibility. Diets were balanced for AA and RDP requirement based on available ME. Individual DMI was measured using a GrowSafe system. Diet, ENZ, and diet × ENZ effects were analyzed using the MIXED procedure of SAS. Initial BW was applied as a covariate for final BW (FBW), and DMI was included as a covariate for all digestibility measures. The diet × ENZ interaction had no effect on FBW, ADG, DMI, or any digestibility measure ( ≥ 0.11). Steers fed ENZ tended to have greater FBW ( = 0.09) and had numerically greater ADG than steers not fed ENZ. Diet influenced DMI ( < 0.01), as steers fed S7 diets had the greatest DMI ( ≤ 0.3), steers fed S0 diets had the least DMI ( ≤ 0.002), and DMI of steers fed S14 and S28 diets did not differ ( = 0.5). There was a diet × ENZ interaction for G:F ( = 0.02) in which S0, S0e, S14e, and S28e did not differ ( ≥ 0.3) and were greatest ( ≤ 0.05). There was no effect of diet or ENZ on DM, OM, or CP digestibility ( ≥ 0.2). Diet had an effect on NDF and ADF digestibility ( ≤ 0.04) which decreased as SH inclusion increased. The addition of ENZ tended to decrease NDF digestibility ( = 0.08) but had no effect on ADF digestibility ( = 0.8). Fiber digestibility in WSC diets did not improve with SH inclusion or ENZ addition but steers fed diets with 14% to 28% of WSC replaced by SH and the addition of 0.045% ENZ converted feed at the same rate as steers fed WSC diets with no SH.

A comparative study on the alternating mesophilic and thermophilic two-stage anaerobic digestion of food waste.

PubMed

Ventura, Jey-R Sabado; Lee, Jehoon; Jahng, Deokjin

2014-06-01

An alternating mesophilic and thermophilic two stage anaerobic digestion (AD) process was conducted. The temperature of the acidogenic (A) and methanogenic (M) reactors was controlled as follows: System 1 (S1) mesophilic A-mesophilic M; (S2) mesophilic A-thermophilic M; and (S3) thermophilic A-mesophilic M. Initially, the AD reactor was acclimatized and inoculated with digester sludge. Food waste was added with the soluble chemical oxygen demand (SCOD) concentrations of 41.4-47.0 g/L and volatile fatty acids of 2.0-3.2 g/L. Based on the results, the highest total chemical oxygen demand removal (86.6%) was recorded in S2 while S3 exhibited the highest SCOD removal (96.6%). Comparing S1 with S2, total solids removal increased by 0.5%; S3 on the other hand decreased by 0.1 % as compared to S1. However, volatile solids (VS) removal in S1, S2, and S3 was 78.5%, 81.7%, and 79.2%, respectively. S2 also exhibited the highest CH4 content, yield, and production rate of 70.7%, 0.44 L CH4/g VSadded, and 1.23 L CH4/(L·day), respectively. Bacterial community structure revealed that the richness, diversity, evenness, and dominance of S2 were high except for the archaeal community. The terminal restriction fragments dendrogram also revealed that the microbial community of the acidogenic and methanogenic reactors in S2 was distinct. Therefore, S2 was the best among the systems for the operation of two-stage AD of food waste in terms of CH4 production, nutrient removal, and microbial community structure. Copyright © 2014 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Using Interdisciplinary research to enrich teachers and classrooms

NASA Astrophysics Data System (ADS)

Warburton, J.; Timm, K.; Huffman, L. T.; Peart, L. W.; Hammond, J.; McMahon, E.

2011-12-01

Imagine being on the stern of a ship in the Atlantic Ocean off the coast of New England as the crew dumps thousands of scallops on the deck, searching the Greenland ice sheet for a remote weather station, or uncovering secrets to past climates as you join an ocean sediment drilling team in Antarctica. So you ask yourself, what would you be doing in all of these places? What you would be doing is what hundreds of educators from around the world have done for over 20 years, participating in field-based Teacher Research Experience (TRE) programs. Teacher Research Experiences involve educators from varying grade levels and backgrounds in hands-on research as a member of a scientific research team. The teacher works side by side with actual research scientists, often on tasks similar to a field assistant or graduate student. As an important member of the research team teachers learn more about science content and the process of science. Subsequently, the educators play a key role in digesting and communicating the science to their students and the general public. TRE programs vary in many ways. Programs take place in a variety of settings-from laboratories to field camps, and from university campuses to aircraft or ships. The primary commonality of the TRE programs in this presentation-PolarTREC (Teachers and Researchers Exploring and Collaborating), ANDRILL (ANtarctic geological DRILLing) Research Immersion for Science Educators (ARISE); Integrated Ocean Drilling Program (IODP) School of Rock (SOR); and the National Oceanic and Atmospheric Administration Teacher at Sea (TAS) program-is that these programs provide an authentic field-based research experience for teachers outside of a laboratory setting, frequently in harsh, remote, or unusual settings. In addition, each of these programs is federally funded, possess dedicated program management staff, leverage existing scientific and programmatic resources, and are usually national, and sometimes international, in scope. Sharing their unique lessons learned and program results, authors will describe how TRE's improve and enrich interdisciplinary science education by connecting teachers, researchers, students, and the public around the globe for involvement in scientific research and global issues.

Neuroscience and Brain Science Special Issue begins in the Malaysian Journal of Medical Sciences

PubMed Central

ABDULLAH, Jafri Malin

2014-01-01

The Malaysian Journal of Medical Sciences and the Orient Neuron Nexus have amalgated to publish a yearly special issue based on neuro- and brain sciences. This will hopefully improve the quality of peer-reviewed manuscripts in the field of fundamental, applied, and clinical neuroscience and brain science from Asian countries. One focus of the Universiti Sains Malaysia is to strengthen neuroscience and brain science, especially in the field of neuroinformatics. PMID:25941457

Promoting Argumentative Practice in Socio-Scientific Issues through a Science Inquiry Activity

ERIC Educational Resources Information Center

Nam, Younkyeong; Chen, Ying-Chih

2017-01-01

This study examines how the use of a science inquiry activity in an environmental socio-scientific issue (SSI) impacts pre-service teachers' argumentative practice in two ways: social negotiation and epistemic understanding of arguments. Twenty pre-service science teachers participated in this study as a part of their science methods class. Small…

Science Teachers' Use of Mass Media to Address Socio-Scientific and Sustainability Issues

ERIC Educational Resources Information Center

Klosterman, Michelle L.; Sadler, Troy D.; Brown, Julie

2012-01-01

The currency, relevancy and changing nature of science makes it a natural topic of focus for mass media outlets. Science teachers and students can capitalize on this wealth of scientific information to explore socio-scientific and sustainability issues; however, without a lens on how those media are created and how representations of science are…

Learning Science Content through Socio-Scientific Issues-Based Instruction: A Multi-Level Assessment Study

ERIC Educational Resources Information Center

Sadler, Troy D.; Romine, William L.; Topçu, Mustafa Sami

2016-01-01

Science educators have presented numerous conceptual and theoretical arguments in favor of teaching science through the exploration of socio-scientific issues (SSI). However, the empirical knowledge base regarding the extent to which SSI-based instruction supports student learning of science content is limited both in terms of the number of…

Conceptual Change Research and Science Education Practice: A Response from Educators

ERIC Educational Resources Information Center

Siry, Christina; Horowitz, Gail; Otulaja, Femi S.; Gillespie, Nicole; Shady, Ashraf; Augustin, Line A.

2008-01-01

We discuss the eight papers in this issue of "Cultural Studies of Science Education" focusing on the debate over conceptual change in science education and explore the issues that have emerged for us as we consider how conceptual change research relates to our practice as science educators. In presenting our interpretations of this research, we…

A Digest of Reports of the Carnegie Commission on Higher Education. With an Index to Recommendations and Suggested Assignments of Responsibility for Action.

ERIC Educational Resources Information Center

Carnegie Commission on Higher Education , Berkeley, CA.

In 21 reports issued over the span of almost six years, the Carnegie Commission on Higher Education has made available a massive resource of information for policymakers in colleges and universities, government agencies, and philanthropic and business organizations. The Commission has also offered nearly 300 individual recommendations for…

76 FR 11499 - National Institute of Diabetes and Digestive and Kidney Diseases; Notice of Closed Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-02

... accordance with the provisions set forth in section 552b(c)(6), Title 5 U.S.C., as amended for the review...: IRA W. LEVIN, PhD, Director, Division of Intramural Research, National Institute of Diabetes and... will be asked to show one form of identification (for example, a government-issued photo ID, driver's...

New Words Digest, Fall 1989-Summer 1990.

ERIC Educational Resources Information Center

New Words Digest, 1990

1990-01-01

This document consists of the four issues of the first annual volume of a quarterly magazine for new adult readers. It is aimed at adults reading at the fourth- to eighth-grade level. The magazine is designed to be self-motivating to the new reader or the learning disabled. Phonetic helps are provided for those words that do not conform to typical…

Biogas Implementation as Waste Management Effort in Lembang Sub-district, West Bandung District

NASA Astrophysics Data System (ADS)

Alberdi, H. A.; Sagala, S. A. H.; Wulandari, Y.; Srajar, S. L.; Nugraha, D.

2018-05-01

As the population and economic activities increase, energy demand will increase significantly too. In the near future, Indonesia will have more limitations on fossil fuel based energy. Therefore, sources of renewable energy have to be found. On the other hand, rural areas in Indonesia suffer from lack of energy supply. Therefore, energy resilient villages need to be created. Kampung Areng in Cibodas Village, Lembang sub-district is one of the locations declared as an energy resilient village. This study focused on Kampung Areng due to previous information and studies that have shown that the farmers in this area are capable of generating renewable energy through conversion of animal waste using biogas digesters. Biogas adoption was also initiated due to the issue of Cikapundung river pollution. Some people pointed their finger at Kampung Areng as the upstream source of this pollution due to irresponsible handling of animal waste. Thus, the idea emerged that biogas digester adoption in this area could solve the waste management issue while providing an alternative energy source for the community. In this paper, the authors aimed to identify the benefit and impact of biogas adoption in Cibodas Village, particularly regarding waste management.

Standardizing the microbiota of fish used in research.

PubMed

Vatsos, I N

2017-08-01

Little attention has been paid to the effects of fish microbiotas on the reproducibility and comparability of fish studies so far. Extrinsic and intrinsic factors, such as water quality, environmental microbial populations, diet, host genetic profile, gender, age and stress status, affect fish microbiotas and create significant inter- and intra-species variations. Fish microbiotas play critical roles in many key aspects of host physiology, such as protection against pathogens, digestion and development of the digestive tract and the local immune system. Thus, greater effort should be invested in standardizing the microbiological profiles of research fish. In this context, issues requiring consideration include the establishment of isogenic and isobiotic fish lines, the standardization of rearing conditions and the development of appropriate tests to adequately describe microbial populations. There are many challenges involved in each of these issues, and the research community must decide which aspects should be standardized for each species and each type of research. For all studies in which microbiota is expected to exert an influence, thorough reporting is of paramount importance. Every step towards standardization increases study quality and simultaneously contributes to reducing the number of fish used in research, which is a legal and ethical obligation.

7 CFR 3430.310 - Allocation of AFRI funds.

Code of Federal Regulations, 2014 CFR

2014-01-01

... integrated multifunctional projects in an appropriate manner and in accordance with the allocation... agricultural sciences. (d) Rapid Response Food and Agricultural Science for Emergency Issues Awards. The Secretary may allocate some funding to address emergency issues in the food and agricultural sciences as...

7 CFR 3430.310 - Allocation of AFRI funds.

Code of Federal Regulations, 2012 CFR

2012-01-01

... integrated multifunctional projects in an appropriate manner and in accordance with the allocation... agricultural sciences. (d) Rapid Response Food and Agricultural Science for Emergency Issues Awards. The Secretary may allocate some funding to address emergency issues in the food and agricultural sciences as...

7 CFR 3430.310 - Allocation of AFRI funds.

Code of Federal Regulations, 2013 CFR

2013-01-01

... integrated multifunctional projects in an appropriate manner and in accordance with the allocation... agricultural sciences. (d) Rapid Response Food and Agricultural Science for Emergency Issues Awards. The Secretary may allocate some funding to address emergency issues in the food and agricultural sciences as...

Tangled up in views: Beliefs in the nature of science and responses to socioscientific dilemmas

NASA Astrophysics Data System (ADS)

Zeidler, Dana L.; Walker, Kimberly A.; Ackett, Wayne A.; Simmons, Michael L.

2002-05-01

The purpose of this study was to investigate the relationships between students' conceptions of the nature of science and their reactions to evidence that challenged their beliefs about socioscientific issues. This study involved 41 pairs of students representing critical cases of contrasting ethical viewpoints. These 82 students were identified from a larger sample of 248 students from 9th and 10th grade general science classes, 11th and 12th grade honors biology, honors science, and physics classes, and upper-level college preservice science education classes. Students responded to questions aimed at revealing their epistemological views of the nature of science and their belief convictions on a selected socioscientific issue. The smaller subset of students was selected based on varying degrees of belief convictions about the socioscientific issues and the selected students were then paired to discuss their reasoning related to the issue while being exposed to anomalous data and information from each other and in response to epistemological probes of an interviewer. Taxonomic categories of students' conceptions of the nature of science were derived from the researchers' analysis of student responses to interviews and questionnaires. In some instances, students' conceptions of the nature of science were reflected in their reasoning on a moral and ethical issue. This study stimulated students to reflect on their own beliefs and defend their opinions. The findings suggest that the reactions of students to anomalous socioscientific data are varied and complex, with notable differences in the reasoning processes of high school students compared to college students. A deeper understanding of how students reason about the moral and ethical context of controversial socioscientific issues will allow science educators to incorporate teaching strategies aimed at developing students' reasoning skills in these crucial areas.

Flexible Automation System for Determination of Elemental Composition of Incrustations in Clogged Biliary Endoprostheses Using ICP-MS.

PubMed

Fleischer, Heidi; Ramani, Kinjal; Blitti, Koffi; Roddelkopf, Thomas; Warkentin, Mareike; Behrend, Detlef; Thurow, Kerstin

2018-02-01

Automation systems are well established in industries and life science laboratories, especially in bioscreening and high-throughput applications. An increasing demand of automation solutions can be seen in the field of analytical measurement in chemical synthesis, quality control, and medical and pharmaceutical fields, as well as research and development. In this study, an automation solution was developed and optimized for the investigation of new biliary endoprostheses (stents), which should reduce clogging after implantation in the human body. The material inside the stents (incrustations) has to be controlled regularly and under identical conditions. The elemental composition is one criterion to be monitored in stent development. The manual procedure was transferred to an automated process including sample preparation, elemental analysis using inductively coupled plasma mass spectrometry (ICP-MS), and data evaluation. Due to safety issues, microwave-assisted acid digestion was executed outside of the automation system. The performance of the automated process was determined and validated. The measurement results and the processing times were compared for both the manual and the automated procedure. Finally, real samples of stent incrustations and pig bile were analyzed using the automation system.

Scientific literacy for citizenship: Tools for dealing with the science dimension of controversial socioscientific issues

NASA Astrophysics Data System (ADS)

Kolst, Stein D.

2001-05-01

This article offers a general framework for examining the science dimension of controversial socioscientific issues. Eight specific content-transcending topics to be emphasized in science education are proposed. The topics are grouped under the headings science as a social process, limitations of science, values in science, and critical attitude. Each topic is explored, and it is argued that knowledge of the topics can serve as tools for students' examination of science-related claims in controversial socioscientific issues. The underlying perspective here is empowerment and the needs of students as lay people. The need of society as a whole for decisions to be made on a broad and firm basis is nevertheless also included. The main reason for suggesting the eight content-transcending topics is to provide focal points for the future development of teaching models aimed at science education for citizenship.

Summary of the Geocarto International Special Issue on "NASA Earth Science Satellite Data for Applications to Public Health" to be Published in Early 2014

NASA Technical Reports Server (NTRS)

Quattrochi, Dale A.

2013-01-01

At the 2011 Applied Science Public Health review held in Santa Fe, NM, it was announced that Dr. Dale Quattrochi from the NASA Marshall Space Flight Center, John Haynes, Program Manager for the Applied Sciences Public Health program at NASA Headquarters, and Sue Estes, Deputy Program Manager for the NASA Applied Sciences Public Health Program located at the Universities Space Research Association (USRA) at the National Space Science and Technology Center (NSSTC) in Huntsville, AL, would edit a special issue of the journal Geocarto International on "NASA Earth Science Satellite Data for Applications to Public Health". This issue would be focused on compiling research papers that use NASA Earth Science satellite data for applications to public health. NASA's Public Health Program concentrates on advancing the realization of societal and economic benefits from NASA Earth Science in the areas of infectious disease, emergency preparedness and response, and environmental health (e.g., air quality). This application area as a focus of the NASA Applied Sciences program, has engaged public health institutions and officials with research scientists in exploring new applications of Earth Science satellite data as an integral part of public health decision- and policy-making at the local, state and federal levels. Of interest to this special issue are papers submitted on are topics such as epidemiologic surveillance in the areas of infectious disease, environmental health, and emergency response and preparedness, national and international activities to improve skills, share data and applications, and broaden the range of users who apply Earth Science satellite data in public health decisions, or related focus areas.. This special issue has now been completed and will be published n early 2014. This talk will present an overview of the papers that will be published in this special Geocarto International issue.

Promoting Issues-based STSE Perspectives in Science Teacher Education: Problems of Identity and Ideology

NASA Astrophysics Data System (ADS)

Pedretti, Erminia G.; Bencze, Larry; Hewitt, Jim; Romkey, Lisa; Jivraj, Ashifa

2008-09-01

Although science, technology, society and environment (STSE) education has gained considerable force in the past few years, it has made fewer strides in practice. We suggest that science teacher identity plays a role in the adoption of STSE perspectives. Simply put, issues-based STSE education challenges traditional images of a science teacher and science instructional ideologies. In this paper, we briefly describe the development of a multimedia documentary depicting issues-based STSE education in a teacher’s class and its subsequent implementation with 64 secondary student-teachers at a large Canadian university. Specifically, we set out to explore: (1) science teacher candidates’ responses to a case of issues-based STSE teaching, and (2) how science teacher identity intersects with the adoption of STSE perspectives. Findings reveal that although teacher candidates expressed confidence and motivation regarding teaching STSE, they also indicated decreased likelihood to teach these perspectives in their early years of teaching. Particular tensions or problems of practice consistently emerged that helped explain this paradox including issues related to: control and autonomy; support and belonging; expertise and negotiating curriculum; politicization and action; and biases and ideological bents. We conclude our paper with a discussion regarding the lessons learned about STSE education, teacher identity and the role of multimedia case methods.

77 FR 31044 - Permits Issued Under the Antarctic Conservation Act

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-24

... NATIONAL SCIENCE FOUNDATION Permits Issued Under the Antarctic Conservation Act AGENCY: National... 95-541. SUMMARY: The National Science Foundation (NSF) is required to publish notice of permits... CONTACT: Nadene G. Kennedy, Permit Office, Office of Polar Programs, Rm. 755, National Science Foundation...

How Do Science and Technology Affect International Affairs?

ERIC Educational Resources Information Center

Weiss, Charles

2015-01-01

Science and technology influence international affairs by many different mechanisms. Both create new issues, risks and uncertainties. Advances in science alert the international community to new issues and risks. New technological capabilities transform war, diplomacy, commerce, intelligence, and investment. This paper identifies six basic…

To naturalize or not to naturalize? An issue for cognitive science as well as anthropology.

PubMed

Stenning, Keith

2012-07-01

Several of Beller, Bender, and Medin's (2012) issues are as relevant within cognitive science as between it and anthropology. Knowledge-rich human mental processes impose hermeneutic tasks, both on subjects and researchers. Psychology's current philosophy of science is ill suited to analyzing these: Its demand for ''stimulus control'' needs to give way to ''negotiation of mutual interpretation.'' Cognitive science has ways to address these issues, as does anthropology. An example from my own work is about how defeasible logics are mathematical models of some aspects of simple hermeneutic processes. They explain processing relative to databases of knowledge and belief-that is, content. A specific example is syllogistic reasoning, which raises issues of experimenters' interpretations of subjects' reasoning. Science, especially since the advent of understandings of computation, does not have to be reductive. How does this approach transfer onto anthropological topics? Recent cognitive science approaches to anthropological topics have taken a reductive stance in terms of modules. We end with some speculations about a different cognitive approach to, for example, religion. Copyright © 2012 Cognitive Science Society, Inc.

USSR and Eastern Europe Scientific Abstracts, Biomedical and Behavioral Sciences, Number 67.

DTIC Science & Technology

1977-03-30

and Ecological Problems 14 Molecular Biology 23 Pharmacology. 25 Physiology. 27 Public Health 46 Radiobiology 48 Therapy . 49 BEHAVIORAL...normalizing metabolic processes be included in the complex therapy . USSR UDC 612.3 616.3 DIGESTIBILITY OF VEGETARIAN FISH MEAT PROTEINS BY PROTEOLYTIC...inactivation of one hemisphere, arising after unilateral electroconvulsive seizure, a study was made of the intelli- gibility of phonemes (vowels and

Readability Levels of the Reading Passages in the ITED: Final Report. Iowa Testing Programs Research Report. Number 6.

ERIC Educational Resources Information Center

Forsyth, Robert

The readability level of passages from three subtests of the Iowa Tests of Educational Development (ITED), Forms X-6 and Y-6, were compared with the readability level of passages selected from the Des Moines Resister, Reader's Digest, Time, Newsweek, Saturday Review, and 18 high school textbooks from the fields of social studies, science, and…

Preparation of Fish Bagoong and Shrimp Bagoong. What We Make. Science and Technology Education in Philippine Society.

ERIC Educational Resources Information Center

Philippines Univ., Quezon City. Science Education Center.

Salted fish paste (locally known as "bagoong") is fermented fish and salt with or without spices or coloring. A bagoong preparation is actually a digestion of fish protein into substances which can be taken in by the body cells and changed into body material. The substance is used in many Filipino dishes (such as pinakbet, dinengdeng, or…

The inclusion of Science Technology Society topics in junior high school earth science textbooks

NASA Astrophysics Data System (ADS)

Fadhli, Fathi Ali

2000-10-01

The Science Technology Society (STS) approach is a major science education reform through which a scientifically literate citizen could be produced. The teaching of science through STS approach is centered on science and technology related issues and problems. The purpose of this study was to analyze five earth science textbooks published in the 1990's for their inclusion of twelve sciences and technology related issues and problems and for their inclusion of activities focused on STS. The selected earth science textbooks were; Scott Foresman, Heath, Holt, Merrill and Prentice-Hall. The targeted twelve issues and problems were identified by Bybee (1987), as the most important global science and technology related issues and problems. The numbers of full text pages devoted to each topic were determined by classifying each segment to one of the targeted topics. In addition, the numbers of STS activities were also determined by using criteria developed for this study. ANOVA statistical analyses and t-tests showed that the analyzed earth science textbooks treated the studied STS issues and problems and treated the STS activities differently. It was found that six of the studied issues and problems were constantly receiving more attention in all the analyzed earth science textbooks than the rest of the topics. These topics were; Air Quality and Atmosphere, Energy Shortages, Water Resources, Land Use, Hazardous Substances, and Mineral Resources. The overall results revealed that only an average of 8.82% of the text pages in all the analyzed earth science textbooks were devoted to STS topics and 5.49% of the activities in all the analyzed earth science textbooks were focused on STS topics. However, none of the activities focused on STS topics were presented in STS approach as defined by NSTA. The percentage of STS topics inclusion and the percentage of activities focused on STS topics were considered to be very low. Accordingly, the objectives and goals of STS approach will not be achieved through using the analyzed earth science textbooks. The low percentages of STS activities and topics indicated also that the STS approach would not be fairly presented in science classrooms as long as science teachers depend on science textbooks 90% of their teaching time. Moreover, the results of this study revealed also that the inclusion of STS approach in science textbooks is still considered to be very low despite the support provided to the STS approach by science teachers, educators, organizations, and education departments and also despite of the publishing of Project Syntheses (1977) since twenty eight years ago.

A Survey of Computer Science Capstone Course Literature

ERIC Educational Resources Information Center

Dugan, Robert F., Jr.

2011-01-01

In this article, we surveyed literature related to undergraduate computer science capstone courses. The survey was organized around course and project issues. Course issues included: course models, learning theories, course goals, course topics, student evaluation, and course evaluation. Project issues included: software process models, software…

Using Social Media to Promote Pre-Service Science Teachers' Practices of Socio-Scientific Issue (SSI) - Based Teaching

ERIC Educational Resources Information Center

Pitiporntapin, Sasithep; Lankford, Deanna Marie

2015-01-01

This paper addresses using social media to promote pre-service science teachers' practices of Socio-Scientific Issue (SSI) based teaching in a science classroom setting. We designed our research in two phases. The first phase examined pre-service science teachers' perceptions about using social media to promote their SSI-based teaching. The…

Confronting Dilemmas Posed by Three-Dimensional Classroom Assessment: Introduction to a Virtual Issue of "Science Education"

ERIC Educational Resources Information Center

Furtak, Erin Marie

2017-01-01

Wide-scale adoption of the "Next Generation Science Standards" has raised new challenges for classroom teachers as they learn not only how to engage students in this new vision of science learning, but also how to assess students' engagement in that learning. This paper introduces a virtual special issue of "Science Education"…

Thai Pre-Service Science Teachers' Struggles in Using Socio-Scientific Issues (SSIs) during Practicum

ERIC Educational Resources Information Center

Pitiporntapin, Sasithep; Yutakom, Naruemon; Sadler, Troy D.

2016-01-01

In educational reform, teaching through socio-scientific issues (SSIs) is considered the best way to promote scientific literacy for citizenship as the goal of science teaching. To bring SSIs into the science classroom, Thai pre-service science teachers (PSTs) are expected to understand the concept of SSI-based teaching and to use it effectively…

The Integration of HIV and AIDS as a Socio-Scientific Issue in the Life Sciences Curriculum

ERIC Educational Resources Information Center

Wolff, Eugenie; Mnguni, Lindelani

2015-01-01

The potential of science to transform lives has been highlighted by a number of scholars. This means that critical socio-scientific issues (SSIs) must be integrated into science curricula. Development of context-specific scientific knowledge and twenty-first-century learning skills in science education could be used to address SSIs such as…

Individuals with greater science literacy and education have more polarized beliefs on controversial science topics

PubMed Central

2017-01-01

Although Americans generally hold science in high regard and respect its findings, for some contested issues, such as the existence of anthropogenic climate change, public opinion is polarized along religious and political lines. We ask whether individuals with more general education and greater science knowledge, measured in terms of science education and science literacy, display more (or less) polarized beliefs on several such issues. We report secondary analyses of a nationally representative dataset (the General Social Survey), examining the predictors of beliefs regarding six potentially controversial issues. We find that beliefs are correlated with both political and religious identity for stem cell research, the Big Bang, and human evolution, and with political identity alone on climate change. Individuals with greater education, science education, and science literacy display more polarized beliefs on these issues. We find little evidence of political or religious polarization regarding nanotechnology and genetically modified foods. On all six topics, people who trust the scientific enterprise more are also more likely to accept its findings. We discuss the causal mechanisms that might underlie the correlation between education and identity-based polarization. PMID:28827344

Science, Science Education and Their Discontents: A Response to Commentaries on the Paper, "Portrait of a Science Teacher as a Bricoleur--A Case Study from India"

ERIC Educational Resources Information Center

Sharma, Ajay

2008-01-01

In this response to commentaries by Ali Sammel, Jhumki Basu and Alberto Rodriguez, I present my perspective on three important issues raised by the commentators. These issues relate to the role of a researcher in her field settings and society, the critique of science and science education as oppressive dominant discourses, and co-opting…

A Case Study on Science Teacher Leadership to Address Diversity and Equity Through Professional Development

NASA Astrophysics Data System (ADS)

Doraiswamy, Nithya

This qualitative case study focused on the multifaceted issue of exploring science teacher leaders understanding and addressing of issues of diversity and equity with peers through professional development. The purpose of the study was to highlight the opportunities and barriers to the addressing of issues of diversity and equity through the work of a community of teachers leaders in science professional development. To frame this study, the researcher drew from the interdisciplinary field of multicultural education, transformative learning, and teacher leadership. In drawing out the connections from these vast bodies of literature, the study speaks to the need of both, creating teacher leaders in science education who are capable of meeting the twin demands of excellence and equity, and also attending to the challenges in the professional learning continuums of teachers leaders and their peers towards addressing issues of diversity and equity in science education.

Bioaccessibility of nutrients and micronutrients from dispersed food systems: impact of the multiscale bulk and interfacial structures.

PubMed

Marze, Sébastien

2013-01-01

Many food systems are dispersed systems, that is, they possess at least two immiscible phases. This is generally due to the coexistence of domains with different physicochemical properties separated by many interfaces which control the apparent thermodynamic equilibrium. This feature was and is still largely studied to design pharmaceutical delivery systems. In food science, the recent intensification of in vitro digestion tests to complement the in vivo ones holds promises in the identification of the key parameters controlling the bioaccessibility of nutrients and micronutrients. In this review, we present the developments of in vitro digestion tests for dispersed food systems (mainly emulsions, dispersions and gels). We especially highlight the evidences detailing the roles of the constituting multiscale structures. In a perspective section, we show the potential of structured interfaces to allow controlled bioaccessibility.

The sheep genome illuminates biology of the rumen and lipid metabolism.

PubMed

Jiang, Yu; Xie, Min; Chen, Wenbin; Talbot, Richard; Maddox, Jillian F; Faraut, Thomas; Wu, Chunhua; Muzny, Donna M; Li, Yuxiang; Zhang, Wenguang; Stanton, Jo-Ann; Brauning, Rudiger; Barris, Wesley C; Hourlier, Thibaut; Aken, Bronwen L; Searle, Stephen M J; Adelson, David L; Bian, Chao; Cam, Graham R; Chen, Yulin; Cheng, Shifeng; DeSilva, Udaya; Dixen, Karen; Dong, Yang; Fan, Guangyi; Franklin, Ian R; Fu, Shaoyin; Guan, Rui; Highland, Margaret A; Holder, Michael E; Huang, Guodong; Ingham, Aaron B; Jhangiani, Shalini N; Kalra, Divya; Kovar, Christie L; Lee, Sandra L; Liu, Weiqing; Liu, Xin; Lu, Changxin; Lv, Tian; Mathew, Tittu; McWilliam, Sean; Menzies, Moira; Pan, Shengkai; Robelin, David; Servin, Bertrand; Townley, David; Wang, Wenliang; Wei, Bin; White, Stephen N; Yang, Xinhua; Ye, Chen; Yue, Yaojing; Zeng, Peng; Zhou, Qing; Hansen, Jacob B; Kristensen, Karsten; Gibbs, Richard A; Flicek, Paul; Warkup, Christopher C; Jones, Huw E; Oddy, V Hutton; Nicholas, Frank W; McEwan, John C; Kijas, James; Wang, Jun; Worley, Kim C; Archibald, Alan L; Cockett, Noelle; Xu, Xun; Wang, Wen; Dalrymple, Brian P

2014-06-06

Sheep (Ovis aries) are a major source of meat, milk, and fiber in the form of wool and represent a distinct class of animals that have a specialized digestive organ, the rumen, that carries out the initial digestion of plant material. We have developed and analyzed a high-quality reference sheep genome and transcriptomes from 40 different tissues. We identified highly expressed genes encoding keratin cross-linking proteins associated with rumen evolution. We also identified genes involved in lipid metabolism that had been amplified and/or had altered tissue expression patterns. This may be in response to changes in the barrier lipids of the skin, an interaction between lipid metabolism and wool synthesis, and an increased role of volatile fatty acids in ruminants compared with nonruminant animals. Copyright © 2014, American Association for the Advancement of Science.

[Gut microbiota and digestion of polysaccharides].

PubMed

El Kaoutari, Abdessamad; Armougom, Fabrice; Raoult, Didier; Henrissat, Bernard

2014-03-01

The distal gut microbiota corresponds to all the microorganisms, essentially bacteria, that reside commonly in the colon. The microbial population is characterized by a large taxonomical diversity, counting approximately a thousand distinct bacterial species for a single individual. The pace of investigations of this microbial system has greatly accelerated these last few years, fuelled by the advent of metagenomics techniques, which do not rely on bacterial cultivation, but utilize high throughput DNA sequencing. In just a few years studies of the intestinal microbiota have become fashionable, albeit with often contradictory results when attempting to correlate changes in microbial composition to diverse pathologies. The article focuses on one of the essential functions of the distal gut microbiota: the digestion of the immense variety of polysaccharides from our diet that enzymes of the host cannot breakdown. © 2014 médecine/sciences – Inserm.

Perspectives on learning through research on critical issues-based science center exhibitions

NASA Astrophysics Data System (ADS)

Pedretti, Erminia G.

2004-07-01

Recently, science centers have created issues-based exhibitions as a way of communicating socioscientific subject matter to the public. Research in the last decade has investigated how critical issues-based installations promote more robust views of science, while creating effective learning environments for teaching and learning about science. The focus of this paper is to explore research conducted over a 10-year period that informs our understanding of the nature of learning through these experiences. Two specific exhibitions - Mine Games and A Question of Truth - provide the context for discussing this research. Findings suggest that critical issues-based installations challenge visitors in different ways - intellectually and emotionally. They provide experiences beyond usual phenomenon-based exhibitions and carry the potential to enhance learning by personalizing subject matter, evoking emotion, stimulating dialogue and debate, and promoting reflexivity. Critical issues-based exhibitions serve as excellent environments in which to explore the nature of learning in these nonschool settings.

A Pedagogical Model for Ethical Inquiry into Socioscientific Issues in Science

ERIC Educational Resources Information Center

Saunders, Kathryn J.; Rennie, Leonie J.

2013-01-01

Internationally there is concern that many science teachers do not address socioscientific issues (SSI) in their classrooms, particularly those that are controversial. However with increasingly complex, science-based dilemmas being presented to society, such as cloning, genetic screening, alternative fuels, reproductive technologies and…

Teaching Research Integrity and Bioethics to Science Undergraduates

ERIC Educational Resources Information Center

Turrens, Julio F.

2005-01-01

Undergraduate students in the Department of Biomedical Sciences at the University of South Alabama, Mobile, are required to take a course entitled "Issues in Biomedical Sciences," designed to increase students' awareness about bioethical questions and issues concerning research integrity. This paper describes the main features of this…

Personalizing Science

ERIC Educational Resources Information Center

Danielowich, Robert M.

2014-01-01

Science teachers are aware of many social issues that intersect with science. These socio-scientific issues (SSIs) are "open-ended problems without clear-cut solutions [that] can be informed by scientific principles, theories, and data, but…cannot be fully determined by [them]" (Sadler 2011, p. 4). This article describes the SSI lessons…

Effects of traditional Chinese medicine formula on ruminal fermentation, enzyme activities and nutrient digestibility of beef cattle.

PubMed

Zhu, Zhi; Song, Zhen-Hui; Cao, Li-Ting; Wang, Yong; Zhou, Wen-Zhang; Zhou, Pei; Zuo, Fu-Yuan

2018-04-01

This study was conducted to evaluate effects of traditional Chinese medicine formula (TCMF) combined with several herbs on ruminal fermentation, enzyme activities and nutrient digestibility. Twenty finishing bulls were assigned to control or different TCMFs (Yufeisan-1, -2, -3; 2.5% dry matter (DM) in concentrate). Results showed that DM intake was higher (P < 0.05) in the Yufeisan-3 group than others. Compared to control, apparent digestibility of crude protein and neutral detergent fiber were increased (P < 0.05) by Yufeisan-3. No changes were observed in ruminal pH, concentrations of ammonia-N, microbial crude protein and total volatile fatty acid, whereas ratio of acetate to propionate was lower (P < 0.05) and propionate proportion tended to be higher (P < 0.1) in three TCMFs than control. Ruminal xylanase (P = 0.061) and carboxymethylcellulase (P < 0.05) activities were higher in Yufeisan-3 than control. No changes were observed in abundance of total bacteria, fungi and protozoa, whereas Fibrobacter succinogenes (P = 0.062) and Ruminococcus flavefaciens (P < 0.05) were increased and total methanogens was reduced (P = 0.069) by Yufeisan-3 compared to control. Yufeisan-3 improved nutrient digestibility and ruminal enzyme activity, and modified fermentation and microbial community, maybe due to the presence of Herba agastaches, Cortex phellodendri and Gypsum fibrosum. © 2018 Japanese Society of Animal Science.

The science of teamwork: Introduction to the special issue.

PubMed

McDaniel, Susan H; Salas, Eduardo

2018-01-01

Provides an introduction to this special issue which explores the Science of Teamwork-what psychological science in 2018 tells us about the process and outcomes of teamwork in a variety of contexts. This work draws from and affects all areas of psychology. The science and practice of teamwork is now an interdisciplinary activity. Teamwork is a complex phenomenon requiring multiple lenses and approaches. What follows is a description of our process in putting together the issue and a brief description of the articles that compose it. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Science teachers' interpretations of Islamic culture related to science education versus the Islamic epistemology and ontology of science

NASA Astrophysics Data System (ADS)

Mansour, Nasser

2010-03-01

The debate about Islam and science extends to a debate about the relationship between Islam and science education. In this paper, I explore Egyptian teachers' views of the relationship between science and religion within the Islamic context. Teachers' key vision of the relationship between science and religion was that "religion comes first and science comes next. I will argue that teachers' personal religious beliefs are among the major constructs that drive teachers' ways of thinking and interpretation of scientific issues related with religion. Then, I discuss how teachers' personal religious beliefs have been formed and influenced their pedagogical beliefs related to science and religion issues. Finally, I will argue, how we use the personal religious beliefs model as a framework of teaching/learning scientific issues related with religion within sociocultural (Islamic) context. [InlineMediaObject not available: see fulltext.][InlineMediaObject not available: see fulltext.][InlineMediaObject not available: see fulltext.

Promoting Preservice Teachers' Attitudes toward Socioscientific Issues

ERIC Educational Resources Information Center

Yerdelen, Sundus; Cansiz, Mustafa; Cansiz, Nurcan; Akcay, Hakan

2018-01-01

In this study, we aimed to improve preservice teachers' attitudes toward socioscientific issues through socioscientific issue course. Moreover, we investigated whether this course influences preservice teachers studying in a science education and non-science education in a similar way. For this purpose, a semester-long socioscientific issues…

Atomic Absorption Spectroscopy of Calcium in Foodstuffs in Non-Science-Major Courses

NASA Astrophysics Data System (ADS)

Kostecka, Keith S.

2000-10-01

Non-science-major students at Columbia College-Chicago are introduced to the concept of ppm, prepare AAS standard solutions, digest foodstuffs in nitric acid, conduct AAS analysis for Ca, determine mass percentage of calcium in the sample, and check calcium levels in various food items on the Internet with a critical eye. Students work cooperatively in a setting that allows them to see how wet chemistry and understandable use of instrumental methods can be linked together. Overall response to this activity has been favorable and continues to spawn new projects dealing with the AAS analysis of metals in hair, vitamins, and additional foods.