Sample records for preservation biological

  1. Preservation of Liquid Biological Samples

    NASA Technical Reports Server (NTRS)

    Putcha, Lakshmi (Inventor); Nimmagudda, Ramalingeshwara (Inventor)

    2004-01-01

    The present invention related to the preservation of a liquid biological sample. The biological sample is exposed to a preservative containing at least about 0.15 g of sodium benzoate and at least about 0.025 g of citric acid per 100 ml of sample. The biological sample may be collected in a vessel or an absorbent mass. The biological sample may also be exposed to a substrate and/or a vehicle.

  2. Preservation of Liquid Biological Samples

    NASA Technical Reports Server (NTRS)

    Putcha, Lakshmi (Inventor); Nimmagudda, Ramalingeshwara R. (Inventor)

    2000-01-01

    The present invention provides a method of preserving a liquid biological sample, comprising the step of: contacting said liquid biological sample with a preservative comprising, sodium benzoate in an amount of at least about 0.15% of the sample (weight/volume) and citric acid in an amount of at least about 0.025% of the sample (weight/volume).

  3. Jasper Ridge Biological Preserve Annual Report 200506

    E-print Network

    Jasper Ridge Biological Preserve Annual Report 2005­06 #12;Contents From the Faculty Director In Memoriam............................................33 The mission of Jasper Ridge Biological Preserve of the preserve's resources. #12; M y core reflection on the past year is one of gratitude--for the generous

  4. Mosquito Report for Jasper Ridge Biological Preserve

    E-print Network

    on the larval stage of mosquitoes, using environmentally sensitive materi- als. Control of larvae minimizes's Residence Portola Farms #12;Page 3 prevents mosquito larvae from de- veloping to adults. These materialsPage 1 Mosquito Report for Jasper Ridge Biological Preserve S a n M a t e o C o u n t y M o s q u i

  5. Jasper Ridge Biological Preserve Annual Report 2000 -01 Stanford University

    E-print Network

    Jasper Ridge Biological Preserve Annual Report 2000 - 01 · Stanford University #12;The mission of Jasper Ridge Biological Preserve is to contribute to the understanding of the Earth's natural sys- tems through research, education, and protec- tion of the Preserve's resources. #12;1 T his was an outstanding

  6. Jasper Ridge Biological Preserve Annual Report 200405

    E-print Network

    and photosynthesis of thousands of leaves, sorted millions of roots, and walked every trail in the dark for pre community in a new way, helping assure the success of ongoing efforts and set the course for the future. I of the strategic plan1 is that the long-term success of the preserve depends on the effectiveness of its

  7. Jasper Ridge Biological Preserve Annual Report 2001-02 Stanford University

    E-print Network

    Jasper Ridge Biological Preserve Annual Report 2001-02 · Stanford University #12;Those who at Jasper Ridge Biological Preserve reflects and is inspired by such concerns. In many respects the Preserve challenge is to encourage development of a symbiotic relationship between the Preserve and the world

  8. Postextraction Alveolar Ridge Preservation: Biological Basis and Treatments

    PubMed Central

    Pagni, Giorgio; Pellegrini, Gaia; Giannobile, William V.; Rasperini, Giulio

    2012-01-01

    Following tooth extraction, the alveolar ridge undergoes an inevitable remodeling process that influences implant therapy of the edentulous area. Socket grafting is a commonly adopted therapy for the preservation of alveolar bone structures in combination or not with immediate implant placement although the biological bases lying behind this treatment modality are not fully understood and often misinterpreted. This review is intended to clarify the literature support to socket grafting in order to provide practitioners with valid tools to make a conscious decision of when and why to recommend this therapy. PMID:22737169

  9. Jasper Ridge Biological Preserve Annual Report 2002-03 Stanford University

    E-print Network

    Jasper Ridge Biological Preserve Annual Report 2002-03 · Stanford University #12;The most basic questions about how much activity can be accommodated by the Preserve without compromising the quality of Preserve activities or the unique resources that make the Preserve so invaluable. Other pressures

  10. Technology Evaluation Report: Biological Treatment of Wood Preserving Site Groundwater by Biotrol, Inc

    EPA Science Inventory

    Biological Treatment of Wood Preserving SITE Groundwater by Biotrol, Inc. BioTrol's pilot-scale, fixed-film biological treatment system was evaluated for its effectiveness at removing pentachlorophenol from groundwater. The system employs indigenous microorganisms amended wit...

  11. 28 CFR 28.22 - The requirement to preserve biological evidence.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...preserve biological evidence does not apply at...defendant. Biological evidence may be collected and...sound investigative practice and the need for evidence in trial proceedings...defendants are imprisoned based on the revocation...

  12. 28 CFR 28.22 - The requirement to preserve biological evidence.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...preserve biological evidence does not apply at...defendant. Biological evidence may be collected and...sound investigative practice and the need for evidence in trial proceedings...defendants are imprisoned based on the revocation...

  13. 28 CFR 28.22 - The requirement to preserve biological evidence.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...preserve biological evidence does not apply at...defendant. Biological evidence may be collected and...sound investigative practice and the need for evidence in trial proceedings...defendants are imprisoned based on the revocation...

  14. Anterior Cruciate Ligament Reconstruction and Preservation: The Single-Anteromedial Bundle Biological Augmentation (SAMBBA) Technique.

    PubMed

    Sonnery-Cottet, Bertrand; Freychet, Benjamin; Murphy, Colin G; Pupim, Barbara H B; Thaunat, Mathieu

    2014-12-01

    Preservation of the anterior cruciate ligament (ACL) remnant during ACL reconstruction has the advantages of improved vascularity and synovial encircling of the graft tendon. We describe a technique called single-anteromedial bundle biological augmentation (SAMBBA) using complete preservation of the ACL remnant, as well as preservation of the semitendinosus tibial insertion, that uses standard portals and equipment. PMID:25685675

  15. Biological preservation of foods with reference to protective cultures, bacteriocins and food-grade enzymes

    Microsoft Academic Search

    W. H. Holzapfel; R. Geisen; U. Schillinger

    1995-01-01

    A review is presented on the present status of biological preservation of foods. Recent developments are discussed with respect to underlying mechanisms of inhibition by ‘protective’ cultures, and special reference is made to lactic acid bacteria (LAB) and their ‘food-grade’ safety. The role of bacteriocins, their limitations and potentiating role in biological systems, is also addressed. The use of enzymes

  16. Biological preservation of foods with reference to protective cultures, bacteriocins and food-grade enzymes.

    PubMed

    Holzapfel, W H; Geisen, R; Schillinger, U

    1995-01-01

    A review is presented on the present status of biological preservation of foods. Recent developments are discussed with respect to underlying mechanisms of inhibition by 'protective' cultures, and special reference is made to lactic acid bacteria (LAB) and their 'food-grade' safety. The role of bacteriocins, their limitations and potentiating role in biological systems, is also addressed. The use of enzymes (e.g. lysozyme) for food preservation is mainly restricted by economic factors, their inactivation by endogenous food components and their limited activity spectrum. Practical applications of protective cultures refer to particular food commodities that either constitute novel systems with respect to packaging and/or composition, or represent special hygienic risks. It is concluded that biological preservation cannot substitute GMP; it, however, offers an additional (and acceptable) processing parameter for improving the safety and assuring the quality of a given food. PMID:7710912

  17. Ecosystem management: Controlling biological invasion in an Illinois nature preserve

    SciTech Connect

    Thelen, C.S. [Southern Illinois Univ. at Edwardsville, Belleville, IL (United States); Schulz, K.E. [Southern Illinois Univ. of Edwardsville, IL (United States)

    1995-12-01

    Understanding the nature and effects of human interaction with the landscape is an important aspect of environmental decisionmaking. Often, human action alters the composition and distribution of organisms. In the North American central Midwest, human occupation has decimated native woodlands, which endure as habitat islands in a highly fragmented natural landscape dominated by intensive agriculture and permeated by invasive exotic species. The alterations in the landscape have affected the structure and function of the few remaining intact forests by altering the environment experienced by tree and herb species. A frequent invader of forest understories throughout the central Midwest is Vinca minor, a horticultural groundcover, yet this species has not previously been studied as a woodland invader. We tested the hypothesis that native understory species were excluded from colonized areas, and that tree seedling growth was suppressed. Using study plots in Knobeloch Woods Nature Preserve, St. Clair County, Illinois, we measured the effect of Vinca colonization on understory composition and diversity, by comparing colonized and uncolonized plots. We also related understory characteristics to soil and canopy properties. Finally, to evaluate an ongoing program to control the invasion in the field, we tested the hypothesis that simultaneous cutting and herbicide treatment had increased the diversity of native understory species. We hope with this study to provide fact-based recommendations for management of midwestern nature preserves experiencing exotic plant invasions.

  18. Integrating Surgery Into Treatment Paradigms for Organ Preservation: Tailoring Treatment to Biology Improves Outcomes

    SciTech Connect

    Wolf, Gregory T. [Department of Otolaryngology-Head and Neck Surgery, University of Michigan, Ann Arbor, MI (United States)], E-mail: gregwolf@umich.edu

    2007-10-01

    Purpose: Neoadjuvant chemotherapy was introduced into treatment paradigms for curable head and neck cancer in the early 1970s in an effort to reduce the magnitude of mutilating surgery and to provide a rationale for adjuvant systemic chemotherapy in patients who responded to initial chemotherapy. The large number of trials that followed failed to demonstrate improved survival when neoadjuvant chemotherapy was added to conventional surgery or radiation. Importantly, a consistent observation in these neoadjuvant trials was the significant association of clinical tumor response to neoadjuvant therapy and favorable prognosis. Results: The findings led to development of a new treatment paradigm that was based on the hypothesis that the biology of an individual cancer is more predictive of response to specific therapy and overall outcome than is anatomic tumor site or extent, and on the corollary that matching treatment modality to biology will improve overall survival rates. Conclusions: This report identifies key findings that are important in the design and analysis of organ preservation trials and biologic markers predictive of response and outcomes. Ongoing studies incorporating biomarkers such as p53, Bcl-xL, HPV, EGFR, COX-2, and tumor promoter gene methylation are underway and will identify new targets for molecular manipulation, response monitoring, and tumor imaging that could allow real-time changes in how we integrate the various components of multi-modal therapy.

  19. Molecular mechanisms of tolerance in tardigrades: new perspectives for preservation and stabilization of biological material.

    PubMed

    Schill, Ralph O; Mali, Brahim; Dandekar, Thomas; Schnölzer, Martina; Reuter, Dirk; Frohme, Marcus

    2009-01-01

    Certain organisms found across a range of taxa, including bacteria, yeasts, plants and many invertebrates such as nematodes and tardigrades are able to survive almost complete loss of body water. The dry organisms may remain in this state, which is known as anhydrobiosis, for decades without apparent damage. When water again becomes available, they rapidly rehydrate and resume active life. Research in anhydrobiosis has focused mainly on sugar metabolism and stress proteins. Despite the discovery of various molecules which are involved in desiccation and water stress, knowledge of the regulatory network governing the stability of the cellular architecture and the metabolic machinery during dehydration is still fragmentary and not well understood. A combination of transcriptional, proteomic and metabolic approaches with bioinformatics tools can provide a better understanding of gene regulation that underlie the biological functions and physiology related to anhydrobiosis. The development of this concept will raise exciting possibilities and techniques for the preservation and stabilization of biological materials in the dry state. PMID:19472511

  20. Environmental quality and preservation; bedrock beneath reefs; the importance of geology in understanding biological decline in a modern reef ecosystem

    USGS Publications Warehouse

    Lidz, Barbara H.

    2000-01-01

    Environmental Quality and Preservation-Bedrock Beneath Reefs: the Importance of Geology in Understanding Biological Decline in a Modern Ecosystem' is a four-page and one-plate full-color discussion of the geologic framework and evolutionary history of the coral reef ecosystem that lines the outer shelf off the Florida Keys.

  1. uShuffle: A useful tool for shuffling biological sequences while preserving the k-let counts

    PubMed Central

    Jiang, Minghui; Anderson, James; Gillespie, Joel; Mayne, Martin

    2008-01-01

    Background Randomly shuffled sequences are routinely used in sequence analysis to evaluate the statistical significance of a biological sequence. In many cases, biologists need sophisticated shuffling tools that preserve not only the counts of distinct letters but also higher-order statistics such as doublet counts, triplet counts, and, in general, k-let counts. Results We present a sequence analysis tool (named uShuffle) for generating uniform random permutations of biological sequences (such as DNAs, RNAs, and proteins) that preserve the exact k-let counts. The uShuffle tool implements the latest variant of the Euler algorithm and uses Wilson's algorithm in the crucial step of arborescence generation. It is carefully engineered and extremely efficient. The uShuffle tool achieves maximum flexibility by allowing arbitrary alphabet size and let size. It can be used as a command-line program, a web application, or a utility library. Source code in C, Java, and C#, and integration instructions for Perl and Python are provided. Conclusion The uShuffle tool surpasses existing implementation of the Euler algorithm in both performance and flexibility. It is a useful tool for the bioinformatics community. PMID:18405375

  2. DataONE: Preserving Data and Enabling Data-Intensive Biological and Environmental Research

    NASA Astrophysics Data System (ADS)

    Cook, R. B.; DataONE Leadership Team

    2011-12-01

    Addressing grand environmental science challenges requires unprecedented access to easily understood data that cross the breadth of temporal, spatial, and thematic scales. From a scientist's perspective, the challenges lie in discovering the relevant data, dealing with data heterogeneity, and converting data to information and knowledge. Solving these challenges requires new approaches for managing, preserving, sharing and analyzing data. DataONE (Observation Network for Earth) represents a virtual organization whose goal is to enable new science and knowledge creation through preservation and access to data about life on Earth and the environment that sustains it. DataONE supports science through facilitating easy, secure, and persistent storage of data and disseminating integrated and user-friendly tools for data discovery, analysis, visualization, and decision-making. DataONE engages its community of partners through working groups focused on identifying and implementing the DataONE cyberinfrastructure, governance, and sustainability models. These working groups, which consist of a diverse group of graduate students, educators, government representatives, and leading computer, information, and library scientists: (1) adapt interoperability standards; (2) create value-added technologies (e.g., semantic mediation, scientific workflow, and visualization) that facilitate data integration, analysis, and understanding; (3) address socio-cultural barriers to sustainable data preservation and data sharing; and (4) promote the adoption of best practices for managing the full data life cycle.

  3. APPLICATIONS ANALYSIS REPORT: BIOLOGICAL TREATMENT OF WOOD PRESERVING SITE GROUNDWATER BY BIOTROL, INC.

    EPA Science Inventory

    This report is an evaluation of the Biotrol, Inc. Aqueous Treatment System (BATS), a fixed-film, aerobic biological treatment process for contaminated groundwaters and other wastewaters. t summarizes and analyzes the results of the Superfund Innovative Technology Evaluation (SITE...

  4. Biophysical and biological factors determining the ability to achieve long-term cryobiological preservation

    SciTech Connect

    Mazur, P. [Oak Ridge National Lab., TN (United States). Life Sciences Div.

    1997-12-01

    The BESTCapsule will maintain appropriate biological specimens for decades or centuries at cryogenic temperatures in the living state. Maintenance at temperatures below {approximately} {minus}140 C is not a problem. No ordinary chemical reactions in aqueous solutions can occur. The only source of damage will be the slow accumulation of physical damage to DNA from background ionizing radiation. But this source of damage should not become serious in less than a millennium. Rather, the main problem in cryopreservation is to devise procedures for cooling the biological specimens to {minus}196 C and returning them to normal temperatures without inflicting lethal injury. Regardless of the cell type, there are certain encompassing biophysical factors and constraints that determine whether they will survive or die during freezing and thawing. Superimposed on these may be special biological factors that apply to specific cell types. This paper will emphasize the former and give illustrative examples of the latter.

  5. Antigen recovery and preservation using the microwave irradiation of biological samples for transmission electron microscopy analysis.

    PubMed

    Aďoun, Josiane; Chat, Sophie; Bordat, Christian; Péchoux, Christine

    2013-01-01

    Most studies using microwave irradiation (MWI) for the preparation of tissue samples have reported an improvement in structural integrity. However, there have been few studies on the effect of microwave (MW) on antigen preservation during sample preparation prior to immunolocalization. This report documents our experience of specimen preparation using an automatic microwave apparatus to obtain antigen preservation and retrieval. We tested the effects of MW processing vs. conventional procedures on the morphology and antigenicity of two different tissues: the brain and mammary gland, whose chemical composition and anatomical organization are quite different. We chose to locate the transcription factor PPAR?/? using immunocytochemistry on brain tissue sections from hamsters. Antigen retrieval protocols involving MWI were used to restore immunoreactivity. We also studied the efficiency of the ultrastructural immunolocalization of both PPAR? and caveolin-1 following MWI vs. conventional treatment, on mammary gland tissue from mice at 10 days of lactation. Our findings showed that the treatment of tissue samples with MWI, in the context of a process lasting just a few hours from fixation to immunolocalization, enabled similar, or even better, results than conventional protocols. The quantification of immunolabeling for cav-1 indicated an increase in density of up to three-fold in tissues processed in the microwave oven. Furthermore, MW treatment permitted the localization of PPAR?/? in glutaraldehyde-fixed specimens, which was impossible in the absence of MWI. This study thus showed that techniques involving the use of microwaves could largely improve both ultrastructure and immunodetection. PMID:23962686

  6. New and unconventional approaches for advancing resolution in biological transmission electron microscopy by improving macromolecular specimen preparation and preservation.

    SciTech Connect

    Massover, W.; Materials Science Division

    2011-02-01

    Resolution in transmission electron microscopy (TEM) now is limited by the properties of specimens, rather than by those of instrumentation. The long-standing difficulties in obtaining truly high-resolution structure from biological macromolecules with TEM demand the development, testing, and application of new ideas and unconventional approaches. This review concisely describes some new concepts and innovative methodologies for TEM that deal with unsolved problems in the preparation and preservation of macromolecular specimens. The selected topics include use of better support films, a more protective multi-component matrix surrounding specimens for cryo-TEM and negative staining, and, several quite different changes in microscopy and micrography that should decrease the effects of electron radiation damage; all these practical approaches are non-traditional, but have promise to advance resolution for specimens of biological macromolecules beyond its present level of 3-10 {angstrom} (0.3-1.0 nm). The result of achieving truly high resolution will be a fulfillment of the still unrealized potential of transmission electron microscopy for directly revealing the structure of biological macromolecules down to the atomic level.

  7. TECHNOLOGY EVALUATION REPORT: BIOLOGICAL TREATMENT OF WOOD PRESERVING SITE GROUNDWATER BY BIOTROL, INC.

    EPA Science Inventory

    This report provides the in-depth data analysis from the SITE Program's six-week demonstration of BioTrol's Aqueous Treatment System (BATS) at the MacGillis and Gibbs Company wood treatment facility in New Brighton, Minnesota. he pilot scale (5gpm), fixed-film biological system u...

  8. Biologically based fertilizer recommendations to meet yield expectations and preserve water quality

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Corn is one of the most demanding crops for N and therefore often requires a high rate of N fertilizer to achieve high productivity. Cost of N fertilizer has risen dramatically during the past decade. Our goal was to develop a biologically based tool to improve N management in high N demanding cer...

  9. Structural data and biological properties of almond gum oligosaccharide: application to beef meat preservation.

    PubMed

    Bouaziz, Fatma; Helbert, Claire Boisset; Romdhane, Molka Ben; Koubaa, Mohamed; Bhiri, Fatma; Kallel, Fatma; Chaari, Fatma; Driss, Dorra; Buon, Laurine; Chaabouni, Semia Ellouz

    2015-01-01

    Enzymatic hydrolysis of almond gum generates low molecular weight oligosaccharides (OAG) with a yield of 33.5%. The generated oligosaccharides were purified and identified. OAG analyses show that the most prominent residues were galactose and arabinose with traces of xylose, rhamnose, glucose and mannose. The glycosyl linkage positions were analyzed using gas chromatography-mass spectrometry showing a main chain composed of galactose units [ ? 3)-Gal-(1 ? ] branched mainly with arabinose residues [Ara-(1 ? ]. The antioxidant and antimicrobial activities of OAG were investigated. As regards the in vitro antioxidant activities, the OAG showed a high total antioxidant activity (347 ?g ascorbic acid equivalent/mL), an important DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging activity (IC50 = 0.64 mg/mL) and a high reducing capacity (RP0.5AU = 3.6 mg/mL). Furthermore, OAG had a high antimicrobial activity against Salmonella thyphimirium, Bacillus cereus, Actinomycetes sp, Klebsiella pneumoniae, Escherichia coli, Alternaria alternate and Candidat albicans. Finally, OAG efficiency was tested using 0.5%; 0.75% and 1% concentrations in beef meat preservation. Microbial growth and lipid oxidation were monitored during 9 days at 4 °C. The results showed significant inhibitions (p < 0.05) of lipid oxidation and microbial growth in ground beef meat containing OAG. PMID:25195541

  10. Assessment of the biological properties of human split skin allografts disinfected with peracetic acid and preserved in glycerol

    Microsoft Academic Search

    R. J Lomas; J. E Cruse-Sawyer; C Simpson; E Ingham; R Bojar; J. N Kearney

    2003-01-01

    Skin allografts derived from cadaveric human donors are widely used in the treatment of serious burn injuries and other conditions, such as ulcers. In order to render these allografts safe for clinical use, and to enable them to be preserved and banked for long periods, effective methods of decontamination and preservation are required. These methods must not adversely affect graft

  11. Preservation Directory

    NSDL National Science Digital Library

    Persons with a penchant for preservation will find that this clearinghouse website is a top-notch resource for materials on historic preservation, preservation-based tourism, and downtown revitalization projects across the United States and Canada. The site was created in 1999 by Tim Cannan, a native of the Finger Lakes region with a professional and academic background in historic and cultural preservation. The materials on the site are divided into topical areas that include "Preservation Events & Conferences", "Grants & Funding Sources" and nine other headings. Visitors who might be less familiar with the world of historic preservation will want to look over the "Video Library". Here they will find clips of restoration projects in progress, preservation walking tours, and endangered places. Also, it is worth noting that the site contains listings and links for over 7000 history museums, 1000 downtown and main street groups, and 4500 historical societies in North America.

  12. Structural plasticity of calmodulin on the surface of CaF2 nanoparticles preserves its biological function

    NASA Astrophysics Data System (ADS)

    Astegno, Alessandra; Maresi, Elena; Marino, Valerio; Dominici, Paola; Pedroni, Marco; Piccinelli, Fabio; Dell'Orco, Daniele

    2014-11-01

    Nanoparticles are increasingly used in biomedical applications and are especially attractive as biocompatible and biodegradable protein delivery systems. Herein, the interaction between biocompatible 25 nm CaF2 nanoparticles and the ubiquitous calcium sensor calmodulin has been investigated in order to assess the potential of these particles to serve as suitable surface protein carriers. Calmodulin is a multifunctional messenger protein that activates a wide variety of signaling pathways in eukaryotic cells by changing its conformation in a calcium-dependent manner. Isothermal titration calorimetry and circular dichroism studies have shown that the interaction between calmodulin and CaF2 nanoparticles occurs with physiologically relevant affinity and that the binding process is fully reversible, occurring without significant alterations in protein secondary and tertiary structures. Experiments performed with a mutant form of calmodulin having an impaired Ca2+-binding ability in the C-terminal lobe suggest that the EF-hand Ca2+-binding motifs are directly involved in the binding of calmodulin to the CaF2 matrix. The residual capability of nanoparticle-bound calmodulin to function as a calcium sensor protein, binding to and altering the activity of a target protein, was successfully probed by biochemical assays. Even if efficiently carried by CaF2 nanoparticles, calmodulin may dissociate, thus retaining the ability to bind the peptide encompassing the putative C-terminal calmodulin-binding domain of glutamate decarboxylase and activate the enzyme. We conclude that the high flexibility and structural plasticity of calmodulin are responsible for the preservation of its function when bound in high amounts to a nanoparticle surface.Nanoparticles are increasingly used in biomedical applications and are especially attractive as biocompatible and biodegradable protein delivery systems. Herein, the interaction between biocompatible 25 nm CaF2 nanoparticles and the ubiquitous calcium sensor calmodulin has been investigated in order to assess the potential of these particles to serve as suitable surface protein carriers. Calmodulin is a multifunctional messenger protein that activates a wide variety of signaling pathways in eukaryotic cells by changing its conformation in a calcium-dependent manner. Isothermal titration calorimetry and circular dichroism studies have shown that the interaction between calmodulin and CaF2 nanoparticles occurs with physiologically relevant affinity and that the binding process is fully reversible, occurring without significant alterations in protein secondary and tertiary structures. Experiments performed with a mutant form of calmodulin having an impaired Ca2+-binding ability in the C-terminal lobe suggest that the EF-hand Ca2+-binding motifs are directly involved in the binding of calmodulin to the CaF2 matrix. The residual capability of nanoparticle-bound calmodulin to function as a calcium sensor protein, binding to and altering the activity of a target protein, was successfully probed by biochemical assays. Even if efficiently carried by CaF2 nanoparticles, calmodulin may dissociate, thus retaining the ability to bind the peptide encompassing the putative C-terminal calmodulin-binding domain of glutamate decarboxylase and activate the enzyme. We conclude that the high flexibility and structural plasticity of calmodulin are responsible for the preservation of its function when bound in high amounts to a nanoparticle surface. Electronic supplementary information (ESI) available: Supplementary methods and figures. See DOI: 10.1039/c4nr04368e

  13. Mostly Plants. Individualized Biology Activities on: I. Investigating Bread Mold; II. Transpiration; III. Botany Project; IV. Collecting/Preserving/Identifying Leaves; [and] V. Student Science Laboratory Write-Ups.

    ERIC Educational Resources Information Center

    Gibson, Paul R.

    Individualized biology activities for secondary students are presented in this teaching guide. The guide is divided into five sections: (1) investigating bread mold; (2) investigating transpiration; (3) completing a botany project; (4) collecting, preserving, and identifying leaves; and (5) writing up science laboratory investigations. The…

  14. [Organ preservation].

    PubMed

    Dreikorn, K

    1992-01-01

    For organ preservation in Europe the Euro-Collins-, UW- and HTK-solution are preferred. While the HTK-solution is mainly used for heart preservation, the UW-solution has shown its advantages for longterm preservation of kidney, liver and pancreas. With regard to renal preservation the HTK-solution provides a higher buffer capacity. According to experimental and theroretical considerations the content of glucose in the Euro-Collins-solution does not seem to correspond to the current state of knowledge. In order to obtain a sufficient primary function renoprotective measurements have proven their efficacy, in addition to an optimal method of organ preservation. Especially in case of suboptimal donors the preservation time should be kept as short as possible. PMID:1285469

  15. Effective Preservation Methods of the Asian Ladybird, Harmonia axyridis (Coleoptera: Coccinellidae), as an Application Strategy for the Biological Control of Aphids

    Microsoft Academic Search

    Mi Ja Seo; Young Nam Youn

    2002-01-01

    After examining the effectiveness of preservation methods of the Asian ladybird, Harmonia axyridis, we were able to preserve the overwintering populations of ladybirds in Fabix plastic boxes or milk paper packs at 4°C and 8°C without food over 4 months with an 84% survival rate. Also, by preserving the 3rd and 4th instar larva with microwave popcorn, we were able

  16. Preservation 11/8/2011 Preservation

    E-print Network

    Stowell, Michael

    Preservation ­ 11/8/2011 #12;Preservation Christine De Vries Interim Head Preservation Analysis Program Conservation Treatments Gift Preview Procedure Preservation Week Seven Deadly Sins Exhibit Combined Facilities & Conservation Needs Assessment report - SPC Preservation Department - Highlights #12

  17. Water quality, organic chemistry of sediment, and biological conditions of streams near an abandoned wood-preserving plant site at Jackson, Tennessee

    USGS Publications Warehouse

    Bradfield, A.D.; Flexner, N.M.; Webster, D.A.

    1993-01-01

    An investigation of water quality, organic sediment chemistry, and biological conditions of streams near an abandoned wood-preserving plant site at Jackson, Tennessee, was conducted during December 1990. The study was designed to assess the extent of possible contamination of water and biota in the streams from creosote-related discharge originating at this Superfund site. Central Creek, adjacent to the plant, had degraded water quality and biological conditions. Water samples from the most downstream station on Central Creek contained 30 micrograms per liter of pentachlorophenol, which exceeds the State's criterion maximum concentrations of 9 micrograms per liter for fish and aquatic life. Bottom-sediment samples from stations on Central Creek contained concentrations of acenaphthene, napthalene, and phenanthrene ranging from 1,400 to 2,500 micrograms per kilogram. Chronic or acute toxicity resulted during laboratory experiments using test organisms exposed to creosote-related contaminants. Sediment elutriate samples from Central Creek caused slightly to highly toxic effects on Ceriodaphnia dubia. Pimephales promelas, and Photobacterium phosphoreum. Fish-tissue samples from this station contained concentrations of naphthalene. dibenzofuran, fluorene, and phenanthrene ranging from 1.5 to 3.9 micrograms per kilogram Blue-green algae at this station represented about 79 percent of the organisms counted, whereas diatoms accounted for only 11 percent. Benthic invertebrate and fish samples from Central Creek had low diversity and density. Sediment samples from a station on the South Fork Forked Deer River downstream from its confluence with Central Creek contained concentrations of acenaphthene, anthracene, chrysene, fluoranthene, fluorene, pyrere, and phenanthrene ranging from 2,800 to 69,000 micrograms per kilogram. Sediment elutriate samples using water as elutriate from this station contained concentrations of extractable organic compounds ranging from an estimated 43 to 420 micrograms per liter. Sediment elutriate samples were toxic to Ceriodaphnia dubta, Pimephales promelas, Photobacterium phosphoreum, and Salenastrum capricornulum.

  18. Preservation Environments

    NASA Technical Reports Server (NTRS)

    Moore, Reagan W.

    2004-01-01

    The long-term preservation of digital entities requires mechanisms to manage the authenticity of massive data collections that are written to archival storage systems. Preservation environments impose authenticity constraints and manage the evolution of the storage system technology by building infrastructure independent solutions. This seeming paradox, the need for large archives, while avoiding dependence upon vendor specific solutions, is resolved through use of data grid technology. Data grids provide the storage repository abstractions that make it possible to migrate collections between vendor specific products, while ensuring the authenticity of the archived data. Data grids provide the software infrastructure that interfaces vendor-specific storage archives to preservation environments.

  19. Urine Preservative

    NASA Technical Reports Server (NTRS)

    Smith, Scott M. (Inventor); Nillen, Jeannie (Inventor)

    2001-01-01

    Disclosed is CPG, a combination of a chlorhexidine salt (such as chlorhexidine digluconate, chlorhexidine diacetate, or chlorhexidine dichloride) and n-propyl gallate that can be used at ambient temperatures as a urine preservative.

  20. Digital Preservation.

    ERIC Educational Resources Information Center

    Yakel, Elizabeth

    2001-01-01

    Reviews research on digital preservation issues, including born-digital and digitally recreated documents. Discusses electronic records research; metadata and other standards; electronic mail; Web-based documents; moving images media; selection of materials for digitization, including primary sources; administrative issues; media stability…

  1. Records Preservation

    USGS Multimedia Gallery

    Older materials and recently arrived items in the Field Records Collection are in various states of preservation and documentation. In the current reorganization project, items are inventoried for content, transferred to archival storage containers, and archived as shelf items (notebooks and file fo...

  2. Preservation Matters

    ERIC Educational Resources Information Center

    Noriega, Chon A.

    2005-01-01

    One must undertake multi-institutional efforts that include universities, archives, museums, libraries and community-based arts organizations and the artists to preserve Latino art history. Arts infrastructure can be strengthened by various Chicano Studies Research Center projects that are concerned with archive building and scholarship, and with…

  3. Preserving Fertility

    Microsoft Academic Search

    Kutluk Oktay; Ozgur Oktem

    \\u000a Negative impact of modern cancer treatment methods on human reproduction has been recognized. In this chapter, we first summarize\\u000a the facts about cancer and treatment-related adverse outcomes in female reproductive function, then discuss the needs, and\\u000a outline the current strategies and the future directions of fertility preservation and ovarian cryopreservation and transplantation\\u000a in adult and adolescent female patients whose fertility

  4. Supplementary Material for A Microfluidic Device for Dry Sample Preservation in Remote Settings

    E-print Network

    Ismagilov, Rustem F.

    S1 Supplementary Material for A Microfluidic Device for Dry Sample Preservation in Remote Settings, sample transportation, biosurveillance, biological archiving, sample preservation, microfluidics, remote for analysis. From "A Microfluidic Device for Dry Sample Preservation in Remote Settings," by Stefano Begolo

  5. BIOLOG

    EPA Science Inventory

    BIOLOG contains more than 43,000 citations to literature on microbial degradation and toxicity of more than 6,000 chemicals. Records are organized by CAS Registry Number and by 6 categories (i.e., biodegradation/toxicity; oxygen condition (anaerobic/aerobic); culture type (pure e...

  6. On orthogonality preserving quadratic stochastic operators

    NASA Astrophysics Data System (ADS)

    Mukhamedov, Farrukh; Taha, Muhammad Hafizuddin Mohd

    2015-05-01

    A quadratic stochastic operator (in short QSO) is usually used to present the time evolution of differing species in biology. Some quadratic stochastic operators have been studied by Lotka and Volterra. In the present paper, we first give a simple characterization of Volterra QSO in terms of absolutely continuity of discrete measures. Further, we introduce a notion of orthogonal preserving QSO, and describe such kind of operators defined on two dimensional simplex. It turns out that orthogonal preserving QSOs are permutations of Volterra QSO. The associativity of genetic algebras generated by orthogonal preserving QSO is studied too.

  7. The Silver Creek Preserve

    USGS Multimedia Gallery

    Before The Nature Conservancy established the Silver Creek Preserve, the watershed had been degraded by years of livestock grazing and overfishing. Preserve managers have been concerned about sedimentation, increasing stream temperatures, and invasive species. To measure the effectiveness of their ...

  8. A History Worth Preserving

    Microsoft Academic Search

    Cynthia Kelly

    2008-01-01

    The Manhattan Project transformed the course of American and world history, science, politics and society. If we can read about this in books and watch History Channel documentaries, why do we need to preserve some of the properties of this enormous undertaking? The presentation, ``A History Worth Preserving,'' will address why some of the physical properties need to be preserved

  9. Preservation--Everybody's Job.

    ERIC Educational Resources Information Center

    Schobernd, Elizabeth M.

    1999-01-01

    Outlines concepts essential for library material preservation. Describes the following components of a formal preservation program: (1) environmental control; (2) repair; (3) binding; (4) deacidification; (5) reformatting; (6) disaster preparedness; (7) education; and (8) administration. Suggests that libraries can improve their preservation

  10. Chapter XLIV Digital Preservation

    E-print Network

    Chapter XLIV Digital Preservation Stephan Strodl Vienna University of Technology, Austria when the original software to interpret them has become unavailable. Digital preservation has thus in the field of digital preservation including the OAIS reference model. We give an overview about the projects

  11. PRESERVING BIODIVERSITY: SPECIES, ECOSYSTEMS, OR LANDSCAPES?

    Microsoft Academic Search

    JERRY F. FRANKLIN

    1993-01-01

    Efforts to preserve biological diversity must focus increasingly at the ecosystem level because of the immense number of species, the majority of which are currently unknown. An ecosystem approach is also the only way to conserve processes and habitats (such as forest canopies, belowground habitats, and hyporheic zones) that, with their constituent species, are poorly known. Continued concern with species

  12. Biological glasses: nature's way to preserve life

    Microsoft Academic Search

    J. Buitink; F. A. Hoekstra

    2000-01-01

    As a result of drying, the cytoplasm of desiccation-tolerant organisms, such as seed and pollen, enters into a highly viscous, solid-like, semi-equilibrium state: the glassy state. The work in this dissertation is focussed on the function and characteristics of intracellular glasses in these organisms.It was established that intracellular glasses are formed in both desiccation-tolerant and -intolerant pollen (chapter 1). However,

  13. Jasper Ridge Biological Preserve Annual Report 200607

    E-print Network

    awarding of the 2007 Nobel Peace Prize to the Intergovern- mental Panel on Climate Change (IPCC) and to Al on which the reports of the IPCC are built. Nobel Prizes in the sciences typically reward a single discovery, something like elucidating the structure of DNA. But this year's Nobel Prize for Peace differs

  14. Scientific Data Preservation

    E-print Network

    Paris-Sud XI, Université de

    2 0 1 4 PREDON Scientific Data Preservation in2p3-00959072,version1-13Mar2014 #12;in2p3 Sommaire Introduction Scientific case Data preservatIon In hIgh energy physIcs c. Diaconu, s. Kraml vIrtual observatory In astrophysIcs c. surace crystallography open Databases anD preservatIon: a WorlD-WIDe In

  15. National Film Preservation Foundation

    NSDL National Science Digital Library

    Created by the United States Congress, the National Film Preservation Foundation provides nationwide support to the preservation of American films of cultural and historical significance, along with improving film access for study, education, and exhibition. Located in San Francisco, the Foundation also awards grants to various film archives and preservations agencies who are also dedicated to preserving important landmarks in American cinematic history. Information on the site includes Preservation Basics, which talks about the importance of film preservation and the nature and chemistry of film decay. A grants and projects section offers information about applying for a film preservation grant from the Foundation and about ongoing preservation projects, like the Saving the Silents: The American Silent Fiction Film Project. In addition, the site contains a complete listing (by title, date, and archive) of the 500 films helped preserved by the Foundation. Film researchers and scholars will find a map of the United States that lists existing film archives and study centers around the country both helpful and a useful tool for determining the direction of their research.

  16. Biopolymers for sample collection, protection, and preservation.

    PubMed

    Sorokulova, Iryna; Olsen, Eric; Vodyanoy, Vitaly

    2015-07-01

    One of the principal challenges in the collection of biological samples from air, water, and soil matrices is that the target agents are not stable enough to be transferred from the collection point to the laboratory of choice without experiencing significant degradation and loss of viability. At present, there is no method to transport biological samples over considerable distances safely, efficiently, and cost-effectively without the use of ice or refrigeration. Current techniques of protection and preservation of biological materials have serious drawbacks. Many known techniques of preservation cause structural damages, so that biological materials lose their structural integrity and viability. We review applications of a novel bacterial preservation process, which is nontoxic and water soluble and allows for the storage of samples without refrigeration. The method is capable of protecting the biological sample from the effects of environment for extended periods of time and then allows for the easy release of these collected biological materials from the protective medium without structural or DNA damage. Strategies for sample collection, preservation, and shipment of bacterial, viral samples are described. The water-soluble polymer is used to immobilize the biological material by replacing the water molecules within the sample with molecules of the biopolymer. The cured polymer results in a solid protective film that is stable to many organic solvents, but quickly removed by the application of the water-based solution. The process of immobilization does not require the use of any additives, accelerators, or plastifiers and does not involve high temperature or radiation to promote polymerization. PMID:25982001

  17. Stabilization and Preservation of Lactobacillus acidophilus in Saccharide Matrices

    Microsoft Academic Search

    Paul B. Conrad; Danforth P. Miller; Peter R. Cielenski; Juan J. de Pablo

    2000-01-01

    Lyophilization and vacuum- or spray-drying are some of the most useful techniques for preserving foods, agricultural products, and pharmaceuticals. Biological materials, however, can be irreversibly damaged during these treatments. Therefore, it is essential to design protective agents to preserve protein activity and cell viability. In this paper we examine the use of ?,?-trehalose–borate systems as protectants for Lactobacillus acidophilus during

  18. Biological Detergents Guide for solubilization of membrane proteins

    E-print Network

    Lebendiker, Mario

    Biological Detergents Guide for solubilization of membrane proteins and selecting tools for detergent removal #12;Calbiochem · Detergents2 Biological Properties and Uses of Detergents Biological amphiphilic detergents, preservation of their biological and functional activities can be a challenging

  19. Protein Preservation BIOMATERIALS

    E-print Network

    Protein Preservation BIOMATERIALS Our goal is to develop measurements for characterizing sugar-based glasses with respect to their ability to serve as preservation media for therapeutic proteins to the stability of proteins in stabilizing sugar-based glass. This property had been completely overlooked

  20. Locality Preserving Projections

    Microsoft Academic Search

    Xiaofei He; Partha Niyogi

    2003-01-01

    Many problems in information processing involve some form of dimen- sionality reduction. In this paper, we introduce Locality Preserving Pro- jections (LPP). These are linear projective maps that arise by solving a variational problem that optimally preserves the neighborhood structure of the data set. LPP should be seen as an alternative to Principal Com- ponent Analysis (PCA) - a classical

  1. Why Preserve Biodiversity?

    NSDL National Science Digital Library

    This lesson plan stresses the importance of maintaining ecosystems and explores the various arguments in favor of preserving the biodiversity of Earth. Students will view photos of endangered species and discuss why these animals are threatened and why they should be protected; learn the meaning of biodiversity, ecosystem, and extinction; explain why all members of an ecosystem are important; list the reasons why biodiversity should be preserved; read articles on various arguments in favor of preserving biodiversity; and write essays in which they explain what they feel are the most compelling reasons for preserving biodiversity and also describe the arguments they think would be most likely to convince the general public that biodiversity should be preserved.

  2. Self-preserving cosmetics.

    PubMed

    Varvaresou, A; Papageorgiou, S; Tsirivas, E; Protopapa, E; Kintziou, H; Kefala, V; Demetzos, C

    2009-06-01

    Preservatives are added to products for two reasons: first, to prevent microbial spoilage and therefore to prolong the shelf life of the product; second, to protect the consumer from a potential infection. Although chemical preservatives prevent microbial growth, their safety is questioned by a growing segment of consumers. Therefore, there is a considerable interest in the development of preservative-free or self-preserving cosmetics. In these formulations traditional/chemical preservatives have been replaced by other cosmetic ingredients with antimicrobial properties that are not legislated as preservatives according to the Annex VI of the Commission Directive 76/768/EEC and the amending directives (2003/15/EC, 2007/17/EC and 2007/22/EC). 'Hurdle Technology', a technology that has been used for the control of product safety in the food industry since 1970s, has also been applied for the production of self-preserving cosmetics. 'Hurdle Technology' is a term used to describe the intelligent combination of different preservation factors or hurdles to deteriorate the growth of microorganisms. Adherence to current good manufacturing practice, appropriate packaging, careful choice of the form of the emulsion, low water activity and low or high pH values are significant variables for the control of microbial growth in cosmetic formulations. This paper describes the application of the basic principles of 'Hurdle Technology' in the production of self-preserving cosmetics. Multifunctional antimicrobial ingredients and plant-derived essential oils and extracts that are used as alternative or natural preservatives and are not listed in Annex VI of the Cosmetic Directive are also reported. PMID:19302511

  3. Remote Belief: Preserving Volition 2 Remote Belief: Preserving Volition 3

    E-print Network

    Sivilotti, Paul

    1 ! " Remote Belief: Preserving Volition 2 # $ % & # ' # (& #) & $ $ $ $ $ & $ * # # $ $ * # * # $ $ # $ & # * & & %+ $ ' # & $ Remote Belief: Preserving Volition 3 , $ (- ). / $ / $ / 0 1/ / & $ / 0 $ $ & (1 - & ) 2 & # & $ & / 3 & / * # $ / 4 & Remote Belief: Preserving Volition 4 ! All possible scenarios Equivalence classes of scenarios

  4. Mojave National Preserve

    NSDL National Science Digital Library

    This National Park Service site contains sections on: desert ecology, with explanations of the desert types (rain shadow deserts, coastal deserts, and remote interior basins), and data on desert population growth; desert plants and animals; history of the preserve including Mojave Indian and Black homesteaders history; recreational information; education, with a list of rangers to call or email for curriculum programs; management issues, including a Final Environmental Impact Statement and General Management Plan; and maps of the preserve. There is also an online story book for kids about desert tortoises and links to information on the geology (as well as geological maps) of the preserve.

  5. Tifft Farm Nature Preserve.

    ERIC Educational Resources Information Center

    Benjamin, Thomas B.; Gannon, David J.

    1980-01-01

    Described are the creation, development, activities, and programs of Tifft Farm, a 264-acre nature preserve and environmental education center in Buffalo, New York, constructed on a sanitary landfill. (BT)

  6. Data Preservation at LEP

    E-print Network

    André G. Holzner; Ryszard Gokieli; Peter Igo-Kemenes; Marcello Maggi; Luca Malgeri; Salvatore Mele; Luc Pape; David Plane; Matthias Schröder; Ulrich Schwickerath; Roberto Tenchini; Jan Timmermans

    2009-12-09

    The four LEP experiments ALEPH, DELPHI, L3 and OPAL successfully recorded e+e- collision data during the years 1989 to 2000. As part of the ordinary evolution in High Energy Physics, these experiments can not be repeated and their data is therefore unique. This article briefly reviews the data preservation efforts undertaken by the four experiments beyond the end of data taking. The current status of the preserved data and associated tools is summarised.

  7. Appearance-Preserving Simplification

    Microsoft Academic Search

    Jonathan D. Cohen; Marc Olano; Dinesh Manocha

    1998-01-01

    We present a new algorithm for appearance-preserving simplif i- cation. Not only does it generate a low-polygon-co unt approx i- mation of a model, but it also preserves the appearance. This is accomplished for a particular display resolution in the sense that we properly sample the surface position, curvature, and color attributes of the input surface. We convert the input

  8. Food Preservation beyond the Season.

    ERIC Educational Resources Information Center

    Hanes, Phyllis

    1992-01-01

    Examines how current scientific knowledge of food preservation emerged from traditions handed down through the generations. Discusses various methods of preservation, their history, and current application. (LZ)

  9. CHAPTER 4CHAPTER 4 PRIVACY PRESERVING DATAPRIVACY PRESERVING DATA

    E-print Network

    Zhang, Jun

    CHAPTER 4CHAPTER 4 PRIVACY PRESERVING DATAPRIVACY PRESERVING DATA MINING University of Kentucky February 2011 Based partly on "Privacy Preserving Data Mining: Challenges & Opportunities" by Ramakrishnan Srikant from Google, Inc, #12;OVERVIEW Basic Concepts What is privacy-preserving data mining Difference

  10. Preserving and Restoring Furniture Coatings

    E-print Network

    Mathis, Wayne N.

    Preserving and Restoring Furniture Coatings http://www.si to preserve the coating on the object whenever possible. This is not to suggest that coatings are never as possible while assuring stability for, and preservation of the artifact. Preserving finishes and treating

  11. Page 66 Biology Sonoma State University 2012-2013 Catalog DEPARTMENT OFFICE

    E-print Network

    Ravikumar, B.

    capitalize on two spectacular nature preserves: Fairfield Osborn Preserve and Galbreath Wildlands Preserve and Evolution and Conservation Marine Biology Microbiology Many students are well served by the basic B.A. plan

  12. Classification conundrums: categorizing chimeras and enacting species preservation

    Microsoft Academic Search

    Carrie Friese

    2010-01-01

    Sociologists have challenged the discipline to account for and incorporate biological factors in their analyses. Heeding this\\u000a call, this article asks how chimeras, a particularly puzzling biological organism, are being officially classified in the\\u000a interrelated sites of endangered species preservation and the zoo. Based on a qualitative study of endeavors to clone endangered\\u000a animals, I contend that biology alone cannot

  13. A History Worth Preserving

    NASA Astrophysics Data System (ADS)

    Kelly, Cynthia

    2008-04-01

    The Manhattan Project transformed the course of American and world history, science, politics and society. If we can read about this in books and watch History Channel documentaries, why do we need to preserve some of the properties of this enormous undertaking? The presentation, ``A History Worth Preserving,'' will address why some of the physical properties need to be preserved and which ones we are struggling to maintain for future generations. The story of this effort begins in 1997 as the Department of Energy was posed to demolish the last remaining Manhattan Project properties at the Los Alamos laboratory. Located deep behind security fences, the ``V Site's'' asbestos-shingled wooden buildings looked like humble garages with over-sized wooden doors. The ``V Site'' properties were almost lost twice, first to bulldozers and then the Cerro Grande fire of 2000. Now, visitors can stand inside the building where J. Robert Oppenheimer and his crew once worked and imagine the Trinity ``gadget'' hanging from its hoist shortly before it ushered in the Atomic Age on July 16, 1945. As Richard Rhodes has commented, we preserve what we value of the physical past because it specifically embodies our social past. But many challenge whether the Manhattan Project properties ought to be preserved. Rather than recognize the Manhattan Project as a great achievement worthy of commemoration, some see it as a regrettable event, producing an instrument to take man's inhumanity to man to extremes. While these divergent views will no doubt persist, the significance of the Manhattan Project in producing the world's first atomic bombs is irrefutable. Preserving some of its tangible remains is essential so that future generations can understand what the undertaking entailed from its humble wooden sheds to enormous first-of-a-kind industrial plants with 125,000 people working in secret and living in frontier-like communities. With continuing pressure for their demolition, what progress has been made in preserving some properties of the Manhattan Project? The presentation will share the handful of remaining properties that we believe are needed to tell the story of the Manhattan Project. It will share our successes, what is still at risk, and the on-going struggle to preserve this history.

  14. Paints and Preservatives.

    ERIC Educational Resources Information Center

    Powell, Larry E.; Miller, Larry E.

    The publication contains an outline for use by agriculture teachers in developing a teaching plan for a unit on paints and preservatives. The topics included are (1) recognizing, solving, and preventing paint problems and (2) operating and using power spray painting equipment. Items presented for each topic are: the situation, (intended to inform…

  15. Splenic preservation in children

    Microsoft Academic Search

    Robert J. Touloukian

    1985-01-01

    The diagnosis of splenic injury can be made with almost 100% certainty by physical examination and nuclear imaging or computerized axial tomography, eliminating the need for surgical exploration in children who are stable and have no evidence of an associated intra-abdominal injury. The nonoperative approach of treatment has been successful in over 95% of selected cases. Operative splenic preservation methods,

  16. Preservation: Issues and Planning.

    ERIC Educational Resources Information Center

    Banks, Paul N., Ed.; Pilette, Roberta, Ed.

    A reference guide from leading experts in the field, this book covers the repair, maintenance, and preservation of library or archive collections, providing a definitive and authoritative analysis of how to plan for and ensure the long-term health of an institution's collection in this digital age. Chapters include: (1) "Defining the Library…

  17. The Signal: Digital Preservation

    NSDL National Science Digital Library

    2013-06-05

    Librarians, information technology specialists, and others will find much to enjoy on this excellent collaborative blog created by the Library of Congress. Called "The Signal," it covers "exciting new developments that have an impact on digital preservation and access." There are 12 experts who contribute posts to the blog on a regular basis and there are well over 400 posts to browse through here. First-time visitors can look through the Categories area, which collects posts into themes such as Digital Content, Outreach and Events, and Tools and Infrastructure. Recent posts include "Hardware Matters," "What Do Researchers Want From Institutions that Preserve Digital Content?" and "Reality Check: What Most People Actually Do with Their Personal Digital Archives." Users are also encouraged to add their own comments and thoughts on each post or suggest materials for possible coverage by the site. [KMG

  18. What Are Tooth Preservation Kits?

    MedlinePLUS

    ... Aid: What to Do Pregnant? What to Expect Sports: Keeping Kids Safe Concussions: What to Know What Are Tooth Preservation Kits? KidsHealth > Parents > Sports Medicine Center > Q&As > What Are Tooth Preservation ...

  19. Preserving Professional Relationships ADMINISTRATIVE POLICY

    E-print Network

    Rainforth, Emma C.

    of inappropriate relationships or behaviors that may lead to complaints of sex discrimination, perceptionPreserving Professional Relationships ADMINISTRATIVE POLICY Section: 600 Section Title: Administrative Policy Name: Preserving Professional Relationships Policy Number: 633 Approval Authority

  20. Steganography Preserving Statistical Properties

    Microsoft Academic Search

    Elke Franz

    2002-01-01

    Steganographic modifications must not noticeably change characteristics of the cover data known to an attacker. However, it\\u000a is a difficult task to define an appropriate set of features that should be preserved. This article investigates possibilities\\u000a to maintain statistical properties while embedding information. As an example, the simple embedding function “overwriting\\u000a the least significant bits” is discussed, w.r.t. greyscale images

  1. Enterocins in food preservation.

    PubMed

    Khan, Haider; Flint, Steve; Yu, Pak-Lam

    2010-06-30

    The Enterococcus genus, a member of the Lactic Acid Bacteria (LAB) is found in various environments, but more particularly in the intestines of humans and other animals. Although sometimes associated with pathogenicity these bacteria have many benefits. They have been found in traditional artisanal fermented products, are used as probiotic cultures and nowadays extensively studied for the production of bacteriocins--the enterocins. Many of these enterocins have been found to be active against Listeria monocytogenes, and a few have also been reported to be active even against Gram negative bacteria, an unusual property for the bacteriocins produced by LAB. These properties have resulted in many studies describing the use of enterocins as preservatives in foods of animal and vegetable origin. This review covers the most recent information on the use of enterocins as food preservatives, either produced in-situ by the addition of enterocin producing strains or as external preservatives in the form of purified or semi-purified extracts, to prevent the growth of spoilage and pathogenic microorganisms. PMID:20399522

  2. FOOD PRESERVATION SERIES RECOMMENDED VARIETIES

    E-print Network

    FOOD PRESERVATION SERIES RECOMMENDED VARIETIES hOW TO STORE QUICK AND EASY SERVING TIPS Peaches for preserves. yield Freestones ­ approximately 15 percent from pits and skins. FOOD SAFETY TIPS 1 pound 3, 25 to 30 minutes. Serve warm. how to preserve FREEZING PEACHES To loosen the skins, submerge peaches

  3. Modern CaCO3 preservation in equatorial Pacific sediments in the context of late-Pleistocene glacial cycles

    E-print Network

    Winckler, Gisela

    Modern CaCO3 preservation in equatorial Pacific sediments in the context of late cycles. Both biological productivity and carbonate preservation have been proposed to be the master variable regulating this variability. We have evaluated the preserved flux of CaCO3 in cores from

  4. Preserving the Manhattan Project

    NASA Astrophysics Data System (ADS)

    Kelly, Cynthia

    2014-03-01

    When future generations look back on the 20th century, few events will rival the harnessing of nuclear energy as a turning point in world history, science and society. Yet, the Department of Energy has not always embraced its Manhattan Project origins. The presentation will focus on the progress made over the last 20 years to preserve the properties and first-hand accounts that for decades have been threatened with demolition and indifference. Since the mid-1950s, most remaining Manhattan Project properties at the Los Alamos National Laboratory had been abandoned. Among them was a cluster of wooden buildings called the ``V Site.'' This is where scientists assembled the ``Gadget,'' the world's first atomic device tested on July 16, 1945. Regardless of its significance, the ``V Site'' buildings like all the rest were slated for demolition. The Advisory Council on Historic Preservation (ACHP) toured the properties in November 1998. Most could not believe that the world's first atomic bomb was designed in such humble structures. The properties were declared to be ``monumental in their lack of monumentality.'' A Save America's Treasures grant for 700,000 was awarded to restore the properties. To raise the required matching funds, I left the Federal government and soon founded the Atomic Heritage Foundation. The presentation will trace the progress made over the last decade to generate interest and support nationwide to preserve the Manhattan Project heritage. Saving both the physical properties and first-hand accounts of the men and women have been a priority. Perhaps our most significant achievement may be legislation now under consideration by Congress to create a Manhattan Project National Historical Park. Seventy years later, the Manhattan Project is finally getting the recognition it deserves.

  5. Biology 494 Biology Internship

    E-print Network

    Wurtele, Eve Syrkin

    Biology 494 Biology Internship Guidelines The Biology Program encourages students to seek out and participate in internship opportunities that have a clear biological focus. Internships may be arranged may receive credit in Biology 494 (Biology Internship) for participation in internships, regardless

  6. Current concepts of organ preservation in head and neck cancer

    Microsoft Academic Search

    C.-J. Wang; R. Knecht

    2011-01-01

    The treatment of laryngeal and hypopharyngel cancer nowadays is not limited by surgical resection. There are many interdisciplinary\\u000a approaches which we can offer these patients in our clinics. These include radiotherapy, chemotherapy, biologicals and surgery.\\u000a The combination of radiotherapy, chemotherapy, biologicals and surgery techniques more and more allows us to perform organ\\u000a and function preservation in a former often mutilating

  7. Fertility preservation in women.

    PubMed

    Donnez, Jacques; Dolmans, Marie-Madeleine

    2013-12-01

    In women, ?10% of cancers occur in those <45 years old. Chemotherapy, radiotherapy and bone marrow transplantation can cure >90% of girls and young women with diseases that require such treatments. However, these treatments can result in premature ovarian failure, depending on the follicular reserve, the age of the patient and the type and dose of drugs used. This article discusses the different fertility preservation strategies: medical therapy before chemotherapy; ovarian transposition; embryo cryopreservation; oocyte vitrification; and ovarian tissue cryopreservation. The indications, results and risks of these options are discussed. Whether medical therapy should be used to protect the gonads during chemotherapy remains a source of debate. Fertility preservation needs to be completed before chemotherapy and/or irradiation is started and might take 2-3 weeks with established techniques such as embryo or oocyte cryopreservation. Further studies are needed in patients with cancer to confirm the excellent outcomes obtained in patients without cancer or in egg donation programmes. For prepubertal girls or cases where immediate therapy is required, cryopreservation of ovarian tissue is the only available option. Finally, possible future approaches are reviewed, including in vitro maturation of nonantral follicles, the artificial ovary, oogonial stem cells and drugs to prevent follicle loss. PMID:24166000

  8. Noncardioplegic Myocardial Preservation

    PubMed Central

    Davis, Zev; Hoeksema, Tammo D.; Guillory, Joel R.; Chen, Aloysius J.; Garibaldi, Abel A.; Eisenberg, Brenda R.

    1987-01-01

    Despite the widespread use of K + cardioplegia, the optimal method of intraoperative myocardial preservation remains controversial. Since 1975, in more than 3,500 patients who have undergone myocardial revascularization at our institutions, intraoperative protection has been provided by a technique of cold-blood perfusion without K + cardioplegia. This report describes our technique, analyzes quantitative ultrastructural changes in four patients before and after bypass to assess cellular damage, and details the clinical and angiographic findings in a subgroup of 157 patients followed postoperatively for up to 6 years. In 100 patients in whom multiple vessels were bypassed, vessels were patent on restudy, thereby excluding technical failure as a cause of impaired left ventricular function. Postoperatively, global left ventricular function was unchanged in 80% and improved in 19%, as compared with preoperative function. Left ventricular function deteriorated in only one patient. We conclude that intraoperative oxygenation by cold-blood perfusion is a successful method of myocardial preservation. (Texas Heart Institute Journal 1987; 14:39-46) Images PMID:15227328

  9. Two-temperature formalin fixation preserves activation states efficiently.

    PubMed

    Chafin, David

    2015-01-01

    Modern pathology is built around the principle of preserving tissues such that the in vivo molecular status is maintained at levels representative of the disease state. Tissues are immersed in a solution of fixative which slowly inactivates biological activities, thus preserving the sample. Further processing ultimately allows the tissue to be embedded into wax for thin sectioning and staining for interpretation microscopically. Every year, around 7 billion tissue samples are submitted for processing in the United States alone. With this huge workload, histology laboratories are looking for faster methods of performing fixation, which currently require from several hours to days to complete. Ideally, this procedure could be standardized and would be quicker with better preservation over a wide range of biologically relevant molecules. PMID:25636434

  10. Sperm banking: fertility preservation for male patients with cancer.

    PubMed

    Frankel Kelvin, Joanne

    2015-02-01

    Sperm banking (SB) involves collecting and freezing sperm for potential future use. It is a simple, noninvasive way for male patients with cancer to preserve their ability to have biologic children. This article provides the information needed by nurses to effectively discuss SB with their patients. PMID:25689656

  11. Wood preservative leachates from docks in an estuarine environment

    Microsoft Academic Search

    P. H. Wendt; R. E Van Dolah; M. Y. Bobo; T. D. Mathews; M. V. Levisen

    1996-01-01

    Environmental concentrations and biological effects of certain metals and organic compounds found in wood preservatives were examined. The study focused on leachates from private residential docks in South Carolina tidal creeks. Copper, chromium, arsenic, and polynuclear aromatic hydrocarbons (PAHs) were measured in composite samples of surficial sediments and naturally occurring oyster populations (Crassostrea virginica) from creeks with high densities of

  12. Preserving Humanity's Memory

    ERIC Educational Resources Information Center

    Meyer, Jim

    1978-01-01

    Four kinds of processes (biological, photochemical, oxidative, and acidic) can cause books to deteriorate, resulting in substantial problems for libraries. Methods for preventing such deterioration are reviewed, included a treatment developed at the University of Chicago called the "Chicago Process." (LBH)

  13. Advances in corneal preservation.

    PubMed Central

    Lindstrom, R L

    1990-01-01

    The functional status of the endothelium and sustained corneal deturgescence after corneal preservation are of great clinical importance and have been primary goals in the development of corneal storage media. In our investigational studies we have specifically addressed the improvement of the quality of donor tissue after 4 degrees C storage, the extension of corneal preservation time, the enhancement of corneal wound healing, and the reduction of the normal progressive loss of endothelial cells postkeratoplasty. Specifically we have developed in vitro HCE cell and epithelial cell culture models that can accurately reflect the response of human corneal tissue in vivo. These models have been utilized to study the effects of growth factors and medium components in relation to their biocompatibility and efficacy in the development of improved corneal preservation solutions. Our laboratory investigated in vitro conditions that allowed human corneal endothelium to shift from a nonproliferative state, in which they remain viable and metabolically active, to a proliferative, mitotically active state. Isolation techniques developed in our laboratory have enabled the establishment of primary and subsequent subcultures of human corneal endothelium that retain the attributes of native endothelium. These in vitro conditions maintain HCE cells in a proliferative state, actively undergoing mitosis. A quantitative bioassay has been developed to determine the effects of various test medium in the stimulation or inhibition of DNA synthesis. In attempting to learn more about the events that occur during in vitro endothelial cell isolation, cell reattachment, extracellular matrix interaction and migrating during subculture, SEM was done on isolated HCE cells incubated in CSM. These studies suggest that the components of the extracellular matrix modulate the growth response of HCE cells, and play a role in regulating proliferation and migration. These observations are important in view of the fact that anterior chamber environment limits cell regeneration of the endothelium, and supports wound healing via cell migration. In vivo, it is the complex interaction of the HCE cell and the extracellular matrix that signal the cell to respond to cell loss in this manner. As our knowledge of human corneal endothelium has increased so has our anticipation of developing the "optimum" medium. Thus additional components have been added to this basic medium to address specific complications encountered with 4 degrees C corneal preservation. Antioxidants, additional energy sources, and other nutritive substrates have been used to supplement and further define a chondroitin sulfate-based medium. These changes have been a part of our new awareness that, even at 4 degrees C, the cornea is metabolically active.(ABSTRACT TRUNCATED AT 400 WORDS) Images FIGURE 5 FIGURE 6 FIGURE 7 FIGURE 8 FIGURE 9 A FIGURE 9 B FIGURE 9 C FIGURE 9 D FIGURE 9 E FIGURE 11 FIGURE 12 A FIGURE 12 B FIGURE 12 C FIGURE 12 D FIGURE 12 E FIGURE 12 F FIGURE 13 FIGURE 17 FIGURE 18 A FIGURE 18 B FIGURE 18 C FIGURE 18 D FIGURE 20 FIGURE 23 A FIGURE 23 B FIGURE 24 A FIGURE 24 B FIGURE 24 C FIGURE 24 D FIGURE 24 E FIGURE 28 FIGURE 29 FIGURE 33 A FIGURE 33 B PMID:1710084

  14. Preservation of Human Cornea

    PubMed Central

    Armitage, W. John

    2011-01-01

    Summary The successful outcome of the majority of corneal transplants depends on the presence of a viable corneal endothelium. This monolayer of cells lines the inner surface of the cornea and its primary function is to maintain corneal transparency by controlling the hydration of the collagenous stromal layer. Since human corneal endothelial cells do not readily proliferate, preservation of the endothelium is a primary aim of methods of corneal storage. Although some cryopreserved corneas have been transplanted successfully, the complexity of the cryopreservation technique and its potential for causing endothelial damage have limited its application. Hypothermia (2–8 °C) is the most commonly applied method of storage, which allows storage for 7–14 days. Organ culture (28–37 °C), which extends storage time to 4 weeks, is used widely in European eye banks. Graft outcomes for corneas stored by these two techniques appear similar. PMID:21566714

  15. Molecular Biology Biology 311

    E-print Network

    Lycan, Deborah E.

    Molecular Biology Biology 311 Fall 2013 Syllabus Instructor: Dr. Deborah Lycan Class: MWF 9@lclark.edu Website: http://legacy.lclark.edu/~lycan/Bio311/molecbiohomepage.html Textbook: Molecular Biology: Alberts et al., Molecular Biology of the Cell 4th edition (2002) Darnell et al., Molecular Cell Biology

  16. Preservation Is Knowledge: A community-driven preservation approach

    E-print Network

    Paris-Sud XI, Université de

    . Keywords Digital Curation; Preservation Repository; Web Legal Deposit; Digital Archives. 1. INTRODUCTION: BUILDING A REPOSITORY In the beginning SPAR was designed as a comprehensive digital preservation tool.1 The Original Vision The National Library of France has been working on building a digital repository

  17. The Preservation of Digital Content

    ERIC Educational Resources Information Center

    Cloonan, Michele Valerie; Sanett, Shelby

    2005-01-01

    The authors are conducting a three-part study to evaluate current trends in the preservation of digital content, with an emphasis on electronic records. The study emanated from the authors' work on the Preservation Task Force of the International Research on Permanent Authentic Records in Electronic Systems (InterPARES) project. This article…

  18. Preferences, information and biodiversity preservation

    Microsoft Academic Search

    Clive L. Spash; Nick Hanley

    1995-01-01

    This paper considers the nature of preferences for the preservation of biodiversity, and the extent to which individuals are well-informed about biodiversity. We present evidence that the elicitation of monetary bids to pay for biodiversity preservation, as required for cost-benefit analysis, fails as a measure of welfare changes due to the prevalence of preferences which neoclassical economics defines as lexicographic.

  19. Integrating Preservation Activities. SPEC Kit.

    ERIC Educational Resources Information Center

    Brown, Karen, Comp.; Holmes, Emily, Comp.

    2002-01-01

    This SPEC (Systems and Procedures Exchange Center) Kit presents the results of a survey of Association of Research Libraries (ARL) member libraries designed to explore to what extent preservation activities have been integrated into research library operations by examining the many facets of mature preservation programs and determining how much…

  20. Preservation of manipulated yeast diet

    Microsoft Academic Search

    Joong Kyun Kim; Hae-Yoon Chung

    2002-01-01

    Manipulated yeast diet can be usedfor seed production of aquacultural organisms.Various methods for preserving the yeast dietduring the periods of circulation in marketwere tested, and the preservation of the yeastdiet by freeze-drying was the best. With thispreservation method, the manipulated yeastswere maintained fairly well (up to 71%) whenstored for three weeks under refrigeratedcondition (4 °C), while more than 80% ofthe

  1. Food preservation by hurdle technology

    Microsoft Academic Search

    Lothar Leistner; Leon G. M. Gorris

    1995-01-01

    Hurdle technology was developed several years ago as a new concept for the production of safe, stable, nutritious, tasty and economical foods. It advocates the intelligent use of combinations of different preservation factors or techniques (‘hurdles’) in order to achieve multi-target, mild but reliable preservation effects. Attractive applications have been identified in many food areas. The present article briefly introduces

  2. Food Preservation and Home Canning

    NSDL National Science Digital Library

    The harvest season is upon us, and home canning fever has begun. The following websites share resources and wisdom regarding home canning, food preservation, and accompanying safety measures. From Clemson University, the first site (1) is a Food Safety and Preservation section housed in the university's online Home and Garden Information Center. This site is stocked full of online and downloadable information sheets regarding canning, freezing, drying, pickling, food borne illnesses, and much more. The site even contains documents addressing food safety after hurricanes, tornados, fires, and power outages. The second website (2), from the University of Georgia, links to numerous food preservation publications like Canning Pumpkin Butter and Mashed or Pureed Squashes; Making Apple Cider; Preserving Food: Using Boiling Water Canners; and Preserving Food: Freezing Animal Products-just to name a few. Hosted by Michigan State University-Extension, the third site (3) contains a comprehensive, alphabetized database on freezing, canning, and drying food (that was based on the USDA Complete Guide to Home Canning). The fourth (4) site-hosted by the National Center for Home Food Preservation-contains the aforementioned USDA Complete Guide to Home Canning in downloadable units. From Penn State University, the fifth (5) site features a food preservation database, which connects site visitors to numerous links regarding safe home processing methods. The sixth site (6-) site contains a publication about home canning of fruit and fruit products. Notably, the publication provides processing times for different contents, amounts, and altitudes.

  3. Marine Biology

    E-print Network

    Zaffino, Kyle

    2013-01-01

    this  door. ”   Marine  Biology   I  joined  the  military  RIVERSIDE   Marine  Biology   A Thesis submitted in partialBiology                                                                                                                        

  4. Decreasing the leachibility of boron wood preservatives 

    E-print Network

    Gezer, Engin Derya

    1996-01-01

    The use of boron in wood preservatives has been growing since the 1930s, primarily in various boric acid/borax mixtures. Boron preservatives have several advantages for application as wood preservatives including a broad spectrum of activity...

  5. 76 FR 74721 - Preserving the Open Internet

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-01

    ...Report No. 2936] Preserving the Open Internet AGENCY: Federal Communications Commission...broadband service to preserve and reinforce Internet freedom and openness. DATES: Oppositions...In the Matter of Preserving the Open Internet, Broadband Industry Practices,...

  6. Treatment of Wood Preserving Wastewater

    E-print Network

    Reynolds, T. D.; Shack, P. A.

    The wastewater produced by the wood preserving industry presents a difficult problem to treat economically. A review of the literature indicates the size of the industry has limited the pursuit of an orderly and economic solution. Atmospheric...

  7. Fertility preservation in cancer survivors.

    PubMed

    Winkler-Crepaz, K; Ayuandari, S; Ziehr, S C; Hofer, S; Wildt, L

    2015-06-01

    Due to the increasing number of long-term cancer survivors, physicians of all specialties are confronted with the need to prevent side effects of the applied oncologic treatments. In the field of reproductive medicine fertility preservation has gained importance as most oncologic treatments have detrimental immediate or long-term impacts on male and female fertility. The American Society of Clinical Oncology and the American Society for Reproductive Medicine, as well as the recently founded International Society for Fertility Preservation propose several established and investigational options for fertility preservation. This review aims to summarize currently available techniques for fertility preservation and future perspectives in this field, as well as to provide recommendations for patient follow-up after cancer and during pregnancy. PMID:25614989

  8. Privacy Preserving Online Convex Optimization

    E-print Network

    Jain, Prateek; Thakurta, Abhradeep

    2011-01-01

    In this paper, we consider the problem of preserving privacy for online convex programming (OCP), an important online learning paradigm. We use the notion of differential privacy as our privacy measure. For this problem, we distill two critical attributes a private OCP algorithm should have, namely, linearly decreasing sensitivity and sub-linear regret bound. Assuming these two conditions, we provide a general framework for OCP that preserves privacy while guaranteeing sub-linear regret bound. We then analyze Implicit Gradient Descent (IGD) algorithm for OCP in our framework, and show $\\tilde O(\\sqrt{T})$ regret bound while preserving differential privacy for Lipschitz continuous, strongly convex cost functions. We also analyze the Generalized Infinitesimal Gradient Ascent (GIGA) method, a popular OCP algorithm, in our privacy preserving framework to obtain $\\tilde O(\\sqrt{T})$ regret bound, albeit for a slightly more restricted class of strongly convex functions with Lipschitz continuous gradient. We then co...

  9. Correctness-preserving program transformations

    Microsoft Academic Search

    Susan L. Gerhart

    1975-01-01

    This paper extends the predicate calculus formalization of the partial correctness properties of programs (Ki, Go) to include the preservation of correctness under program transformations. The general notion of \\

  10. NONCONVEX REGULARIZATION FOR SHAPE PRESERVATION

    SciTech Connect

    CHARTRAND, RICK [Los Alamos National Laboratory

    2007-01-16

    The authors show that using a nonconvex penalty term to regularize image reconstruction can substantially improve the preservation of object shapes. The commonly-used total-variation regularization, {integral}|{del}u|, penalizes the length of the object edges. They show that {integral}|{del}u|{sup p}, 0 < p < 1, only penalizes edges of dimension at least 2-p, and thus finite-length edges not at all. We give numerical examples showing the resulting improvement in shape preservation.

  11. Identifying and Preserving Wildlife Tracks

    NSDL National Science Digital Library

    This site is an article by Jon C. Boren, Extension Wildlife Specialist and Byron D. Wright, Agricultural Specialist both from the University of New Mexico entitled Identifying and Preserving Wildlife Tracks. It contains information about identifying animal tracks, including those of deer, elk, antelope, and mountain lions. Also, there is a helpful guide to preserving animal tracks by making track casts, including the procedure and materials needed. A recommended reading list is also presented to give visitors a starting point for more information.

  12. Fibres and cellular structures preserved in 75-million–year-old dinosaur specimens

    PubMed Central

    Bertazzo, Sergio; Maidment, Susannah C. R.; Kallepitis, Charalambos; Fearn, Sarah; Stevens, Molly M.; Xie, Hai-nan

    2015-01-01

    Exceptionally preserved organic remains are known throughout the vertebrate fossil record, and recently, evidence has emerged that such soft tissue might contain original components. We examined samples from eight Cretaceous dinosaur bones using nano-analytical techniques; the bones are not exceptionally preserved and show no external indication of soft tissue. In one sample, we observe structures consistent with endogenous collagen fibre remains displaying ?67?nm banding, indicating the possible preservation of the original quaternary structure. Using ToF-SIMS, we identify amino-acid fragments typical of collagen fibrils. Furthermore, we observe structures consistent with putative erythrocyte remains that exhibit mass spectra similar to emu whole blood. Using advanced material characterization approaches, we find that these putative biological structures can be well preserved over geological timescales, and their preservation is more common than previously thought. The preservation of protein over geological timescales offers the opportunity to investigate relationships, physiology and behaviour of long extinct animals. PMID:26056764

  13. Fibres and cellular structures preserved in 75-million-year-old dinosaur specimens.

    PubMed

    Bertazzo, Sergio; Maidment, Susannah C R; Kallepitis, Charalambos; Fearn, Sarah; Stevens, Molly M; Xie, Hai-Nan

    2015-01-01

    Exceptionally preserved organic remains are known throughout the vertebrate fossil record, and recently, evidence has emerged that such soft tissue might contain original components. We examined samples from eight Cretaceous dinosaur bones using nano-analytical techniques; the bones are not exceptionally preserved and show no external indication of soft tissue. In one sample, we observe structures consistent with endogenous collagen fibre remains displaying ?67?nm banding, indicating the possible preservation of the original quaternary structure. Using ToF-SIMS, we identify amino-acid fragments typical of collagen fibrils. Furthermore, we observe structures consistent with putative erythrocyte remains that exhibit mass spectra similar to emu whole blood. Using advanced material characterization approaches, we find that these putative biological structures can be well preserved over geological timescales, and their preservation is more common than previously thought. The preservation of protein over geological timescales offers the opportunity to investigate relationships, physiology and behaviour of long extinct animals. PMID:26056764

  14. Preservatives in registered chemical products.

    PubMed

    Flyvholm, Mari-Ann

    2005-07-01

    Preservatives are common causes of contact allergy and contact dermatitis. Exposure to cosmetics, personal care products, consumer products and occupationally used products often involve contact with the same range of preservatives. The aim of this study is to provide an overview on the occurrence of preservatives in registered chemical products. The studied preservatives included substances from standard patch test series and other preservatives relevant for registered chemical products. Data obtained from the Danish Product Register Database (PROBAS) in January 2005 were compared to similar data from January 2002. Paints/lacquers, cleaning agents and printing inks were the most frequently registered product categories, and the studied preservatives were registered in most of the product categories included in the study. For most product categories the total number of registered products was stable during the study period. Butylated hydroxytoluene, benzoic acid, isothiazolinones, Bronopol and formaldehyde showed an increase from 2002 to 2005. Most of these changes occurred in the product category paints/lacquers, for which a doubling mainly due to a change in registration practice was observed. The frequent registration of isothiazolinones (MCI/MI and benzisothiazolinone) in paints/lacquers may be a possible explanation for the relative high and stable frequency of positive patch test reactions to MCI/MI. PMID:15982228

  15. Metabolic stimulation of plant phenolics for food preservation and health.

    PubMed

    Sarkar, Dipayan; Shetty, Kalidas

    2014-01-01

    Plant phenolics as secondary metabolites are key to a plant's defense response against biotic and abiotic stresses. These phytochemicals are also increasingly relevant to food preservation and human health in terms of chronic disease management. Phenolic compounds from different food crops with different chemical structures and biological functions have the potential to act as natural antioxidants. Plant-based human foods are rich with these phenolic phytochemicals and can be used effectively for food preservation and bioactive enrichments through metabolic stimulation of key pathways. Phenolic metabolites protect against microbial degradation of plant-based foods during postharvest storage. Phenolics not only provide biotic protection but also help to counter biochemical and physical food deteriorations and to enhance shelf life and nutritional quality. This review summarizes the role of metabolically stimulated plant phenolics in food preservation and their impact on the prevention of oxidative stress-induced human diseases. PMID:24422591

  16. Copyright 1999 by the Genetics Society of America Preservation of Duplicate Genes by Complementary, Degenerative Mutations

    E-print Network

    Monteiro, Antónia

    * and John Postlethwait* *Department of Biology, University of Oregon, Eugene, Oregon 97403 and Department of Biology, Loyola University of Chicago, Chicago, Illinois 60626 Manuscript received March 17, 1998 Accepted for the preservation of gene duplicates. For a newly duplicated paralog, survival depends on the outcome of the race

  17. Current concepts of organ preservation in head and neck cancer.

    PubMed

    Wang, C-J; Knecht, R

    2011-04-01

    The treatment of laryngeal and hypopharyngeal cancer nowadays is not limited by surgical resection. There are many interdisciplinary approaches which we can offer these patients in our clinics. These include radiotherapy, chemotherapy, biologicals and surgery. The combination of radiotherapy, chemotherapy, biologicals and surgery techniques more and more allows us to perform organ and function preservation in a former often mutilating and function destroying treatment. Since the early 1990s, evidence from large randomized trials has shown that organ preservation studies using sequential and concomitant radio-chemotherapy do not compromise survival when compared with surgery followed by radiotherapy. However, using these therapies side effects have to be taken into consideration and not organ preservation but function preservation is the treatment goal. The current most common treatment options are shown here in this review. For future treatment protocols there is an urgent need to refine the definition of a functional organ, to define quality of life endpoints and to refine the recommendations for evaluating treatment response. PMID:21107854

  18. Some operations and transductions that preserve rationality.

    E-print Network

    Paris-Sud XI, Université de

    Some operations and transductions that preserve rationality. Jean-´Eric Pin and Jacques Sakarovitch impulse is to know whether this operation preserves rational languages. If the answer appears preserves rational languages" can be readily be refined into "such an an operation preserves star-free lan

  19. Functions Which Preserve Lebesgue Spaces Zbigniew Piotrowski

    E-print Network

    Piotrowski, Zbigniew

    Functions Which Preserve Lebesgue Spaces Zbigniew Piotrowski and Robert W. Vallin 11 July 2002 Abstract In this note we show that functions which preserve the property of being a Lebesgue space are precisely the class of metric preserving functions. 1 Introduction and Definitions The idea of preserving

  20. Privacy-preserving logistic regression Kamalika Chaudhuri

    E-print Network

    Smith, Adam D.

    Privacy-preserving logistic regression Kamalika Chaudhuri Information Theory and Applications on privacy-preserving logistic regression. First we apply an idea of Dwork et al. [6] to design a privacy-preserving, and perturbing the learned classifier with noise proportional to the sensitivity. We then provide a privacy-preserving

  1. Distributed Preservation Services: Integrating Planning and Actions

    E-print Network

    Distributed Preservation Services: Integrating Planning and Actions Christoph Becker1 , Miguel/Guimar~aes, Portugal http://www.dsi.uminho.pt Abstract. Digital preservation has turned into an active field on which actions to take to preserve a given set of digital objects for future access, i.e., preservation

  2. Suggested References for Home Food Preservation

    E-print Network

    Suggested References for Home Food Preservation USDA and Cooperative Extension So Easy to Preserve Center for Home Food Preservation: http://homefoodpreservation.com USDA Complete Guide to Home Canning http://www.uga.edu/nchfp/publications/publications_usda.html Manufacturers of Home Food Preservation

  3. BIOLOGICAL SCIENCES Contemporary biological science

    E-print Network

    BIOLOGICAL SCIENCES Contemporary biological science covers a range of diverse and overlapping in cellular and molecular biology. Wichita State University's Department of Biological Sciences offers courses in most aspects of contemporary biological science. Our required core courses will expose you

  4. Preserving Interactive Multimedia Art: A Case Study in Preservation Planning

    E-print Network

    the findings of a pilot project for preserving born-digital interactive multimedia art. We describe. Furthermore, the field of arts has more and more adopted the new media. Digital photography has long exceeded-understood file formats. In contrast, collections of born-digital art pose a whole new problem field. Electronic

  5. Geology of Mojave National Preserve

    NSDL National Science Digital Library

    This website of the United States Geological Survey (USGS) and the National Park Service (NPS) highlights the geology of the Mojave National Preserve in California. It includes a field trip describing areas of interest at the preserve, as well as a geologic time scale describing the history and development of this area. Processes that shaped this region include volcanism, tectonics, faulting, erosion, deposition, spreading, intrusions, and glaciation. There is a geologic map of the area with units and a legend, and links to maps and technical papers.

  6. Low-level efficacy of cosmetic preservatives.

    PubMed

    Lundov, M D; Johansen, J D; Zachariae, C; Moesby, L

    2011-04-01

    Preservation using combinations of preservatives has several advantages. This study shows that the concentration of some of the most frequently used allergenic preservatives can be markedly lowered when they are combined with phenoxyethanol. The antimicrobial efficacy of cosmetic preservatives and known allergens of various potency [diazolidinyl urea, methylchloroisothiazolinone/methylisothiazolinone (MCI/MI), methylisothiazolinone (MI) and phenoxyethanol] was tested alone and in various combinations of two or three preservatives together. The preservatives were tested for minimum inhibitory concentration (MIC) values and possible synergy using fractional inhibitory concentration. MCI/MI was the only preservative showing low-level MIC against all four tested microorganisms: Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Aspergillus niger. Different combinations of the preservatives indicated additive effects against the microorganisms. No combination of preservatives showed any inhibitory action on each other. Challenge tests with different concentrations and combinations were performed in a cosmetic cream. Diazolidinyl urea and MCI/MI alone were ineffective against C. albicans in a challenge test at concentrations up to 16 times higher than the observed MIC values. When combining phenoxyethanol with either one of the allergenic preservatives diazolidinyl urea, MCI/MI or MI, the cosmetic cream was adequately preserved at concentrations well below the preservatives' MIC values as well as 10-20 times below the maximum permitted concentrations. By using combinations of preservatives, effective preservation can be achieved with lower concentrations of allergenic preservatives. PMID:21272037

  7. Hybrid Food Preservation Program Improves Food Preservation and Food Safety Knowledge

    ERIC Educational Resources Information Center

    Francis, Sarah L.

    2014-01-01

    The growing trend in home food preservation raises concerns about whether the resulting food products will be safe to eat. The increased public demand for food preservation information led to the development of the comprehensive food preservation program, Preserve the Taste of Summer (PTTS). PTTS is a comprehensive hybrid food preservation program…

  8. From Preserving Data to Preserving Research: Curation of Process and Context

    E-print Network

    Rauber,Andreas

    From Preserving Data to Preserving Research: Curation of Process and Context Rudolf Mayer1 , Stefan at hand. This raises the need to provide means for preserving and sharing en- tire eScience workflows to preserve it and approaches to enable and validate the re-execution of a preserved process. This includes

  9. Shape preserving interpolation. Revision 1

    SciTech Connect

    Carlson, R.E.

    1985-08-06

    Fast, accurate interpolation algorithms are needed in virtually all areas of high speed scientific computing. As computer power has grown, physical, mathematical and computational models have become more complicated in an attempt to achieve more realistic simulations of the underlying physical processes. These changes have influenced the trends in developing new and more sophisticated interpolation methods. In the past an important criterion used to select an interpolation algorithm was the accuracy of a method as measured by the rate of convergence of the interpolant as the mesh size is decreased to zero. However, in most practical problems one has little or no control over the number and/or location of the data points, and the mesh never tends to zero. Instead, the user demands that the interpolant provide an accurate approximation to ''physical reality'', or at least to his/her perception of that reality. In attempting to increase fidelity to the underlying physical processes, two phrases have come into vogue when describing interpolation methods: ''visually pleasing'' and ''shape preserving''. Visually pleasing means the end result must look ''right'' to the user. While this is a highly desirable goal, it is subjective and has not yet been characterized mathematically. In contrast, shape preserving refers to the preservation of one or more mathematical properties (called shape characteristics) during the interpolation process. These shape characteristics often represent physical properties of the system being modeled. This paper is about shape preserving interpolation methods as applied to solving real-world scientific problems.

  10. A Phase Preserving Sar Processor

    Microsoft Academic Search

    R. Keith Raney; Paris W. Vachon

    1989-01-01

    Synthetic aperture radar (SAR) image phase information IS necessary to support many advanced SAR applications. The phase information in the complex image for conventional range­ Doppler processors is not a robust estimate of scene phase . A SAR processor specifically designed to preserve phase informa­ tion is being developed at the Canada Centre for Remote Sens­ ing (CCRS). In addition

  11. Homotopy Preserving Medial Axis Simplification

    Microsoft Academic Search

    Avneesh Sud; Mark Foskey; Dinesh Manocha

    2005-01-01

    We present a novel algorithm to compute a simplified medial axis of a polyhedron. Our simplification algorithm tends to remove unstable features of Blum's medial axis. Moreover, our algorithm preserves the topological structure of the original medial axis and ensures that the simplified medial axis has the same homotopy type as Blum's medial axis. We use the separation angle formed

  12. Raspberries Using, Storing and Preserving

    E-print Network

    area for up to one year. · For best quality and nutritive value, preserve only what your family can with plastic wrap, or put in a plastic bag with holes. · Keep fruit away from raw meats and meat juices; drain.You may can berries in water, apple or white grape juice, or syrup. Prepare syrup if desired

  13. Preservation: past, present and future.

    PubMed

    Gould, G W

    2000-01-01

    Foods deteriorate in quality due to a wide range of reactions including some that are physical, some that are chemical, some enzymic and some microbiological. The various forms of spoilage and food poisoning caused by micro-organisms are preventable to a large degree by a number of preservation techniques, most of which act by preventing or slowing microbial growth. These include freezing, chilling, drying, curing, conserving, vacuum packing, modified atmosphere packing, acidifying, fermenting, and adding preservatives. In contrast, a smaller number of techniques act by inactivating micro-organisms, predominantly heating (pasteurization and sterilization). Complementary techniques restrict access of micro-organisms to food products, e.g. aseptic processing and packaging. New and 'emerging' preservation techniques include more that act by inactivation. They include the application of ionizing radiation, high hydrostatic pressure, high voltage electric discharges, high intensity light, ultrasonication in combination with heat and slightly raised pressure ('manothermosonication'), and the addition to foods of bacteriolytic enzymes, bacteriocins, and other naturally-occurring antimicrobials. Major trends, reacting to consumers' needs, are towards the use of procedures that deliver food products that are less 'heavily' preserved, higher quality, more convenient, more 'natural', freer from additives, nutritionally healthier, and still with high assurance of microbiological safety. PMID:10885107

  14. UCI Ecological Preserve Published Papers

    E-print Network

    Rose, Michael R.

    UCI Ecological Preserve Published Papers Berschauer, D.P. 1992. Is the "Endangered Species Act" endangered? Southwestern University Law Review 21 (3): 991 ­ 1017. Bowler, P.A. 1990. Riparian Woodland: An Endangered Habitat in Southern California. Pp. 80-97 in Schoenherr, A. (Eds.). Endangered Plant Communities

  15. Steeping Preservation of Baby Corn

    Microsoft Academic Search

    Poonam Aggarwal; Ravneet Kaur

    2010-01-01

    Baby sweet corn (Zea mays var. rugosa Bonaf.) is used in Asian cuisine and considered a specialty item outside of Asia. Dehusked baby corn, harvested at 2 and 4 days after silk emergence, was preserved in a steeping solution and packed in glass jars. The steeping solution used concentrations of acetic acid from 0.5% to 2.0% and sodium chloride from

  16. FOOD PRESERVATION SERIES Summer Squash

    E-print Network

    then be grated and used in quick bread recipes. Add thin strips or slices of summer squash to salads or soups bread. WO1051 #12;how to preserve how to prepare recipe Skillet Zucchini with Chopped Tomatoes 1 in a wok or frying pan. Add squash pieces to hot oil. Season with salt and pepper. Use soy sauce or fish

  17. Commercial farmland preservation in Oregon

    Microsoft Academic Search

    J. R. Pease

    1982-01-01

    Oregon's agricultural land preservation program emphasizes the importance of commercial agriculture to the state's economy. Statewide zoning requirements and farm use incentives are designed to protect commercial agriculture from fragmentation and conflicting uses. While the state has invested significant staff and funding commitments over nearly a decade, the program's long-term effectiveness still faces difficult tests.

  18. Preserving average proximity in arrays

    Microsoft Academic Search

    Richard A. DeMillo; Stanley C. Eisenstat; Richard J. Lipton

    1978-01-01

    Programmers and data structure designers are often forced to choose between alternative structures. In storing these structures, preserving logical adjacencies or “proximity” is usually an important consideration. The combinatorial problem of storing arrays as various kinds of list structures is examined. Embeddings of graphs are used to model the loss of proximity involved in such storage schemes, and an elementary

  19. SAMPLE PRESERVATION: A PROGRESS REPORT

    EPA Science Inventory

    The primary objective of this study is to evaluate chemical preservatives which can be added to the sample bottle before collection which will be effective in stabilizing the coliform density for not less than 48 hours using current methodology for detecting coliform organisms. T...

  20. Preservation Decisions: Terms and Conditions Apply Challenges, Misperceptions and Lessons Learned in Preservation Planning

    E-print Network

    Preservation Decisions: Terms and Conditions Apply Challenges, Misperceptions and Lessons Learned in Preservation Planning Christoph Becker Vienna University of Technology Vienna, Austria www Decisions in digital preservation pose the delicate mission of balancing desired goals of authentic long

  1. Biological decontamination by nonthermal plasmas

    Microsoft Academic Search

    Mounir Laroussi; Igor Alexeff; Weng L. Kang

    2000-01-01

    Nonthermal gaseous discharges have been found to be effective agents for biological decontamination\\/sterilization. The ability to generate these discharges at atmospheric pressure makes the decontamination process practical and inexpensive. In addition, the fact that the plasmas generated by such discharges are cold makes their use suitable for applications where medium preservation is desired. To fully understand the biophysical and biochemical

  2. Multiple Representations of Biological Processes

    Microsoft Academic Search

    Carolyn L. Talcott; David L. Dill

    2006-01-01

    This paper describes representations of biological processes based on Rewriting Logic and Petri net formalisms and mappings between these represen- tations used in the Pathway Logic Assistant. The mappings are shown to preserve properties of interest. In addition a relevant subnet transformation is defined, that specializes a Petri net model to a specific query to reduce the number of transi-

  3. Biologic Rhythms Derived from Siberian Mammoths' Hairs

    Microsoft Academic Search

    Mike Spilde; Antonio Lanzirotti; Clifford Qualls; Genevieve Phillips; Abdul-Mehdi Ali; Larry Agenbroad; Otto Appenzeller; Matjaz Perc

    2011-01-01

    Hair is preserved for millennia in permafrost; it enshrines a record of biologic rhythms and offers a glimpse at chronobiology as it was in extinct animals. Here we compare biologic rhythms gleaned from mammoth's hairs with those of modern human hair. Four mammoths' hairs came from varying locations in Siberia 4600 km, four time zones, apart ranging in age between

  4. Biological Technicians

    MedlinePLUS

    ... biological and medical scientists conduct laboratory tests and experiments. Work Environment Biological technicians typically work in laboratories. ... biological and medical scientists conduct laboratory tests and experiments. Duties Biological technicians typically do the following: Set ...

  5. Biology Online

    NSDL National Science Digital Library

    Richard Lees

    Biology Online provides a dictionary of biological terms, tutorials, and biology-related links categorized into dozens of subfields. The tutorials cover the following topics: adaptation, cell biology, developmental biology, freshwater ecology, genetics and evolution, neurology, regulation in biological systems, and the origin and evolution of life.

  6. [Allergy to cosmetics. II. Preservatives].

    PubMed

    Kie?-Swierczy?ska, Marta; Krecisz, Beata; Swierczy?ska-Machura, Dominika

    2004-01-01

    Disinfectants are essential components of body care preparations, household goods and industrial products. They inhibit growth of bacteria and fungi. Esters of parahydroxybenzoate acid and products that release small amounts of formaldehyde (Germal 115, Germal II, Dovicil 200, Bronopol, DMDM hydantoine) were most frequently used in the past. In the 1980s, Katon CG (5-chloro-2-methyl-4-isothiazolin-3-one + 2-methyl-4-isothiazolin-3-one) evoked the epidemics of contact dermatitis in Sweden, Finland, Germany, Italy and The Netherlands. In the next years, allergy to another preservative, Euxyl K 400 was dramatically growing. Studies carried out in 11 European countries showed that hypersensitivity increased from 0.7% in 1991 to 3.5% in 2000. It was revealed that not only cosmetics left on the skin sensitize, but also those washable. Apart from preservatives, allergic reactions are induced by emulgators, antioxidants, moisteners, lubricants, stabilizers and stickers. PMID:15493505

  7. SYNERGISTIC WOOD PRESERVATIVES FOR REPLACEMENT OF CCA

    EPA Science Inventory

    The objective of this project was to evaluate the potential synergistic combinations of environmentally-safe biocides as wood preservatives. These wood preservatives could be potential replacements for the heavy-metal based CCA. Didecyldimethylammonium chloride [DDAC] was...

  8. 76 FR 60754 - Preserving the Open Internet

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-30

    ...FCC 10-201] Preserving the Open Internet AGENCY: Federal Communications Commission...establishing rules to preserve the open Internet. Inadvertently the wrong paragraph was...complaints alleging violations of the open Internet rules. Federal Communications...

  9. Distance Preserving Flattening of Surface Sections

    E-print Network

    Hersch, Roger D.

    at interactive rates, allowing users to displace their focus point while visualizing the resulting flattened extraction, distance preserving surface flattening, interactive multiresolution flattening. ć 1 INTRODUCTION cartographic projections (Section 6). The first flattening method (Section 4) preserves distances along curves

  10. Acid preservation systems for food products

    SciTech Connect

    Tiberio, J. E.; Cirigiano, M. C.

    1984-10-16

    Fumaric acid is used in combination with critical amounts of acetic acid to preserve acid containing food products from microbiological spoilage in the absence of or at reduced levels of chemical preservative.

  11. Technical Information/Website Preservation

    NASA Technical Reports Server (NTRS)

    PintoRey, Christian R.

    2010-01-01

    This document reviews the work of the author in NASA's Motivating Undergraduates in Science and Technology (MUST) internship. The intern worked on the Space Shuttles hydraulic systems (i.e., Auxiliary Power Units (APU's) and Hydraulic Pump Units (HPU's)), and website preservation of the hydraulic technology captured in websites relating to the coming.the Space Shuttle Retirement. Several figures and pictures show an overview of the orbiter's hydraulic systems

  12. Update on Dark Sky Preservation

    Microsoft Academic Search

    D. L. Crawford

    1998-01-01

    The efforts to protect dark skies for astronomy and for the public are accelerating. An increasing number of cities and states are considering and enacting outdoor lighting control ordinances. Examples of such lighting codes and a model code are available from the International Dark-Sky Association's Web page, at www.darksky.org. There will be a major meeting on Preserving the Astronomical Environment,

  13. Privacy Preserving Online Reputation Systems

    Microsoft Academic Search

    Marco Voss

    2004-01-01

    Reputation systems evolve as a mechanism to build trust in dynamic electronic societies. However, they are also a danger to\\u000a privacy because they monitor a user’ s behavior. At the same time reputation systems offer the possibility to limit the information\\u000a a user has to give away during a transaction to ensure accountablity.Privacy preserving reputation systems solve the conflict\\u000a between

  14. Privacy-Preserving Linear Fisher Discriminant Analysis

    Microsoft Academic Search

    Shuguo Han; Wee Keong Ng

    2008-01-01

    Privacy-preserving data mining enables two or more parties to collaboratively perform data mining while preserving the data\\u000a privacy of the participating parties. So far, various data mining and machine learning algorithms have been enhanced to incorporate\\u000a privacy preservation. In this paper, we propose privacy-preserving solutions for Fisher Discriminant Analysis (FDA) over horizontally\\u000a and vertically partitioned data. FDA is one of

  15. Design Preserving Garment Transfer Remi Brouet13

    E-print Network

    Design Preserving Garment Transfer Remi Brouet13 Alla Sheffer2 Laurence Boissieux3 Marie-Paule Cani13 1 Grenoble University 2 University of British Columbia 3 INRIA Figure 1: Design preserving garment-preserving trans- fer of garments between characters with different body shapes. For real-life garments

  16. Coverage Preserving Redundancy Elimination in Sensor Networks

    E-print Network

    Carbunar, Bogdan

    to improving energy efficiency, while preserving the network's coverage. We also examine the impact to this as the coverage-preserving, energy-efficient redundancy elimination problem. Fig. 1 illustrates an exampleCoverage Preserving Redundancy Elimination in Sensor Networks Bogdan Carbunar, Ananth Grama, Jan

  17. Incentive Compatible Privacy-Preserving Data Analysis

    E-print Network

    Kantarcioglu, Murat

    Incentive Compatible Privacy-Preserving Data Analysis Murat Kantarcioglu and Wei Jiang Abstract-preserving distributed data analysis (PPDA) tasks to learn beneficial data models or analysis results. Most often to design incentive compatible privacy-preserving data analysis techniques that motivate participating

  18. Implementing Preservation Strategies for Complex Multimedia Objects

    Microsoft Academic Search

    Jane Hunter; Sharmin Choudhury

    2003-01-01

    Abstract. Addressing the preservation and long-term access issues for digital resources is one of the key challenges facing informational organisations such as libraries, archives, cultural institutions and government agencies today. A number of major initiatives and projects have been established to investigate or develop strategies for preserving the burgeoning amounts of digital content being produced. To date, the alternative preservation

  19. Commission on Preservation and Access Newsletter, 1996.

    ERIC Educational Resources Information Center

    Commission on Preservation and Access Newsletter, 1996

    1996-01-01

    The Commission on Preservation and Access was established to foster and support collaboration among libraries and allied organizations in order to ensure the preservation of the published and documentary record in all formats and to provide enhanced access to scholarly information. The Commission's newsletter keeps preservation and access…

  20. 7 CFR 782.14 - Identity preservation.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...2014-01-01 2014-01-01 false Identity preservation. 782.14 Section 782...End-Use Certificate Program § 782.14 Identity preservation. (a) The importer...the imported wheat shall preserve the identity of the Canadian-produced...

  1. 7 CFR 782.14 - Identity preservation.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...2012-01-01 2012-01-01 false Identity preservation. 782.14 Section 782...End-Use Certificate Program § 782.14 Identity preservation. (a) The importer...the imported wheat shall preserve the identity of the Canadian-produced...

  2. 7 CFR 782.14 - Identity preservation.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...2013-01-01 2013-01-01 false Identity preservation. 782.14 Section 782...End-Use Certificate Program § 782.14 Identity preservation. (a) The importer...the imported wheat shall preserve the identity of the Canadian-produced...

  3. 7 CFR 782.14 - Identity preservation.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...2010-01-01 2010-01-01 false Identity preservation. 782.14 Section 782...End-Use Certificate Program § 782.14 Identity preservation. (a) The importer...the imported wheat shall preserve the identity of the Canadian-produced...

  4. 7 CFR 782.14 - Identity preservation.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...2011-01-01 2011-01-01 false Identity preservation. 782.14 Section 782...End-Use Certificate Program § 782.14 Identity preservation. (a) The importer...the imported wheat shall preserve the identity of the Canadian-produced...

  5. Detecting Preserved Eggshell Crack Using Machine Vision

    Microsoft Academic Search

    Wang Fang; Wen Youxian

    2011-01-01

    As preserved egg is becoming an important branch of egg processing industry, how to detect the crack on preserved eggshell through a fast and nondestructive method is an important segment of improving the quality of the preserved egg. This paper analyzed the different kinds of image processing methods based on the machine vision technology. It was concluded that the morphological

  6. Preservation Assessment and Disaster Response Plan.

    ERIC Educational Resources Information Center

    Wisdom, Mark

    This paper addresses the preservation needs unique to small libraries, where the majority of special collections exist. A preservation survey of the Herrick Memorial Library (Wellington, OH) was conducted to ascertain the condition of its 45,000 holdings and develop a practical low-cost disaster plan. Using accepted preservation survey criteria,…

  7. Local control of area-preserving maps

    E-print Network

    Cristel Chandre; Michel Vittot; Guido Ciraolo

    2008-09-01

    We present a method of control of chaos in area-preserving maps. This method gives an explicit expression of a control term which is added to a given area-preserving map. The resulting controlled map which is a small and suitable modification of the original map, is again area-preserving and has an invariant curve whose equation is explicitly known.

  8. The Preservation of Paper Collections in Archives.

    ERIC Educational Resources Information Center

    Adams, Cynthia Ann

    The preservation methods used for paper collections in archives were studied through a survey of archives in the metropolitan Atlanta (Georgia) area. The preservation policy or program was studied, and the implications for conservators and preservation officers were noted. Twelve of 15 archives responded (response rate of 80 percent). Basic…

  9. Constraints on the Preservation of Ferriferous Microfossils

    Microsoft Academic Search

    Susan Glasauer; Al Mattes; Andreas Gehring

    2012-01-01

    ABSTRACT:The taphonomy of ancient microbial communities is understood via rare windows of microbes that are successfully entombed and preserved in the fossil record. Laboratory investigations using live bacterial cultures, combined with observations on microfossils preserved in ferriferous oolitic beds formed around 161 million years ago, were used to constrain conditions that are conducive to preservation by mineralization. Lab experiments confirmed

  10. STRUCTURE-PRESERVING DISCRETIZATION OF INCOMPRESSIBLE FLUIDS

    E-print Network

    Pavlov, Dmitry

    STRUCTURE-PRESERVING DISCRETIZATION OF INCOMPRESSIBLE FLUIDS D. PAVLOV , P. MULLEN , Y. TONG , E- tonian descriptions of fluid dynamics where the configuration space is defined as the volume-preserving preservation in mind, and often suffer from spurious numerical artifacts such as energy and circulation drift

  11. Positivity-Preserving for Continuum Gyrokinetic and

    E-print Network

    Hammett, Greg

    Positivity-Preserving Algorithms for Continuum Gyrokinetic and Gyrofluid Simulations of Edge Plasma turbulence. Spectral methods and Arakawa finite differencing have the useful property of exactly preserving WENO/UNO, the Suresh-Huynh 5th order algorithm, and a recent extremum-preserving 4th order method [P

  12. PREDON Scientific Data Preservation 2014

    NASA Astrophysics Data System (ADS)

    Diaconu, C.; Kraml, S.; Surace, C.; Chateigner, D.; Libourel, T.; Laurent, A.; Lin, Y.; Schaming, M.; Benbernou, S.; Lebbah, M.; Boucon, D.; Cérin, C.; Azzag, H.; Mouron, P.; Nief, J.-Y.; Coutin, S.; Beckmann, V.

    Scientific data collected with modern sensors or dedicated detectors exceed very often the perimeter of the initial scientific design. These data are obtained more and more frequently with large material and human efforts. A large class of scientific experiments are in fact unique because of their large scale, with very small chances to be repeated and to superseded by new experiments in the same domain: for instance high energy physics and astrophysics experiments involve multi-annual developments and a simple duplication of efforts in order to reproduce old data is simply not affordable. Other scientific experiments are in fact unique by nature: earth science, medical sciences etc. since the collected data is "time-stamped" and thereby non-reproducible by new experiments or observations. In addition, scientific data collection increased dramatically in the recent years, participating to the so-called "data deluge" and inviting for common reflection in the context of "big data" investigations. The new knowledge obtained using these data should be preserved long term such that the access and the re-use are made possible and lead to an enhancement of the initial investment. Data observatories, based on open access policies and coupled with multi-disciplinary techniques for indexing and mining may lead to truly new paradigms in science. It is therefore of outmost importance to pursue a coherent and vigorous approach to preserve the scientific data at long term. The preservation remains nevertheless a challenge due to the complexity of the data structure, the fragility of the custom-made software environments as well as the lack of rigorous approaches in workflows and algorithms. To address this challenge, the PREDON project has been initiated in France in 2012 within the MASTODONS program: a Big Data scientific challenge, initiated and supported by the Interdisciplinary Mission of the National Centre for Scientific Research (CNRS). PREDON is a study group formed by researchers from different disciplines and institutes. Several meetings and workshops lead to a rich exchange in ideas, paradigms and methods. The present document includes contributions of the participants to the PREDON Study Group, as well as invited papers, related to the scientific case, methodology and technology. This document should be read as a "facts finding" resource pointing to a concrete and significant scientific interest for long term research data preservation, as well as to cutting edge methods and technologies to achieve this goal. A sustained, coherent and long term action in the area of scientific data preservation would be highly beneficial.

  13. 48 CFR 211.272 - Alternate preservation, packaging, and packing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...272 Alternate preservation, packaging, and packing. Use the provision...211-7004, Alternate Preservation, Packaging, and Packing, in solicitations which include military preservation, packaging, or packing specifications...

  14. 48 CFR 211.272 - Alternate preservation, packaging, and packing.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...272 Alternate preservation, packaging, and packing. Use the provision...211-7004, Alternate Preservation, Packaging, and Packing, in solicitations which include military preservation, packaging, or packing specifications...

  15. 48 CFR 211.272 - Alternate preservation, packaging, and packing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...272 Alternate preservation, packaging, and packing. Use the provision...211-7004, Alternate Preservation, Packaging, and Packing, in solicitations which include military preservation, packaging, or packing specifications...

  16. 828revision:2005-06-09modified:2007-02-18 PRESERVING PRESERVATION

    E-print Network

    Shelah, Saharon

    828revision:2005-06-09modified:2007-02-18 PRESERVING PRESERVATION JAKOB KELLNER AND SAHARON SHELAH Abstract. We prove that the property "P doesn't make the old reals Lebesgue null" is preserved under that such requirements are needed (this is argued in section 4). Preservation theorems of this kind have proven

  17. Vandermonde-form Preserving Matrices And The Generalized Signal Richness Preservation Problem

    E-print Network

    Vaidyanathan, P. P.

    Vandermonde-form Preserving Matrices And The Generalized Signal Richness Preservation Problem preservation problem, is addressed and studied. In order to solve the problem, a special class of square matrices, namely the "Vandermonde-form preserving" (VFP) matrices, is introduced and found to be highly

  18. Checklist to Host a Food Preservation Workshop Establish your Food Preservation Workshop Committee.

    E-print Network

    Checklist to Host a Food Preservation Workshop Establish your Food Preservation Workshop Committee form. Use state-wide tool at http://fcsagents.tamu.edu/food_and_nutrition/food-preservation/preserving or school with kitchen facilities for demonstration and food preparation). Consider also number of possible

  19. Guides to pollution prevention: Wood preserving industry

    SciTech Connect

    Not Available

    1993-11-01

    The guide provides an overview of the wood preserving industry and presents options for minimizing waste generation through source reduction and recycling. Treatment with both oilborne and waterborne preservatives is discussed in the guide. However, because in the United States, the majority of wood is treated with chromated copper arsenate, the guide focuses on waterborne preservatives. Process wastewater surface runoff water, and sludge are possible sources of contamination in the wood preserving industry, although in waterborne processes the majority of wastewater is reused. Process wastewater includes water from conditioning, kiln drying, treated wood washing, accumulations in doors or retort sumps, preservative formulation recovery, and rinsing.

  20. Plant molecular biology in the space station era: Utilization of KSC fixation tubes with RNAlater

    Microsoft Academic Search

    Anna-Lisa Paul; Howard G. Levine; William McLamb; Kelly L. Norwood; David Reed; Gary W. Stutte; H. William Wells; Robert J. Ferl

    2005-01-01

    Spaceflight experiments involving biological specimens face unique challenges with regard to the on orbit harvest and preservation of material for later ground-based analyses. Preserving plant material for gene expression analyses requires that the tissue be prepared and stored in a manner that maintains the integrity of RNA. The liquid preservative RNAlater (Ambion) provides an effective alternative to conventional freezing strategies,

  1. Chemical stability of preserved oligotrophic water samples

    USGS Publications Warehouse

    Adomaitis, V.A.; Shoesmith, J.A.; Swanson, G.A.

    1973-01-01

    Tests were conducted to determine whether changes that may occur in the chemical characteristics of stored oligotrophic waters collected on 15 sites in northeastern Minnesota were affected by chloroforming. Chloroform was added on site to one of each pair of samples to stabilize the organic content of the water by preventing biological decomposition. The samples were subsequently stored at 25 deg.C, and pH and specific conductivity were measured at intervals for a period of 13 months at which time nine additional chemical parameters (total dissolved solids, total alkalinity, chloride, sulfate, silica, calcium, magnesium, sodium and potassium) were measured.pH increased and specific conductivity decreased. Average changes occurring in time from the original levels were not influenced by treatment, and first differed significantly (P0.05). Sodium and potassium levels were too low to provide meaningful comparisons. It was concluded that chloroform may be advantageous in preserving oligothrophic waters with respect to total dissolved solids, sulfate and calcium.

  2. Polarization preservation in the AGS

    SciTech Connect

    Ratner, L.G.

    1983-01-01

    The successful operation of a high energy polarized beam at the Argonne Zero Gradient Synchrotron (ZGS) with the concommitant development of depolarizing resonance correction techniques has led to the present project of commissioning such a beam at the Brookhaven Alternating Gradient Synchrotron (AGS). A description of the project was presented at the 1981 National Accelerator Conference. I would like to now present a more detailed description of how we plan to preserve the polarization during acceleration, and to present our game plan for tuning through some 50 resonances and reaching our goal of a 26 GeV polarized proton beam with greater than 60% polarization.

  3. Preservation and Conservation Online Resources for Training and Research

    E-print Network

    Stowell, Michael

    Preservation and Conservation Online Resources for Training and Research AIC ­ American Institute of training opportunities and interest groups that focus on Preservation issues. Among these are: Lists/e-mail discussion groups: PADG ­ Preservation Administrators Discussion Group (aka Preservation Administrators

  4. Enhanced cellular preservation by clay minerals in 1 billion-year-old lakes

    NASA Astrophysics Data System (ADS)

    Wacey, David; Saunders, Martin; Roberts, Malcolm; Menon, Sarath; Green, Leonard; Kong, Charlie; Culwick, Timothy; Strother, Paul; Brasier, Martin D.

    2014-07-01

    Organic-walled microfossils provide the best insights into the composition and evolution of the biosphere through the first 80 percent of Earth history. The mechanism of microfossil preservation affects the quality of biological information retained and informs understanding of early Earth palaeo-environments. We here show that 1 billion-year-old microfossils from the non-marine Torridon Group are remarkably preserved by a combination of clay minerals and phosphate, with clay minerals providing the highest fidelity of preservation. Fe-rich clay mostly occurs in narrow zones in contact with cellular material and is interpreted as an early microbially-mediated phase enclosing and replacing the most labile biological material. K-rich clay occurs within and exterior to cell envelopes, forming where the supply of Fe had been exhausted. Clay minerals inter-finger with calcium phosphate that co-precipitated with the clays in the sub-oxic zone of the lake sediments. This type of preservation was favoured in sulfate-poor environments where Fe-silicate precipitation could outcompete Fe-sulfide formation. This work shows that clay minerals can provide an exceptionally high fidelity of microfossil preservation and extends the known geological range of this fossilization style by almost 500 Ma. It also suggests that the best-preserved microfossils of this time may be found in low-sulfate environments.

  5. Enhanced cellular preservation by clay minerals in 1 billion-year-old lakes.

    PubMed

    Wacey, David; Saunders, Martin; Roberts, Malcolm; Menon, Sarath; Green, Leonard; Kong, Charlie; Culwick, Timothy; Strother, Paul; Brasier, Martin D

    2014-01-01

    Organic-walled microfossils provide the best insights into the composition and evolution of the biosphere through the first 80 percent of Earth history. The mechanism of microfossil preservation affects the quality of biological information retained and informs understanding of early Earth palaeo-environments. We here show that 1 billion-year-old microfossils from the non-marine Torridon Group are remarkably preserved by a combination of clay minerals and phosphate, with clay minerals providing the highest fidelity of preservation. Fe-rich clay mostly occurs in narrow zones in contact with cellular material and is interpreted as an early microbially-mediated phase enclosing and replacing the most labile biological material. K-rich clay occurs within and exterior to cell envelopes, forming where the supply of Fe had been exhausted. Clay minerals inter-finger with calcium phosphate that co-precipitated with the clays in the sub-oxic zone of the lake sediments. This type of preservation was favoured in sulfate-poor environments where Fe-silicate precipitation could outcompete Fe-sulfide formation. This work shows that clay minerals can provide an exceptionally high fidelity of microfossil preservation and extends the known geological range of this fossilization style by almost 500?Ma. It also suggests that the best-preserved microfossils of this time may be found in low-sulfate environments. PMID:25068404

  6. Allergic contact dermatitis to preservatives.

    PubMed

    Timm-Knudson, Vickie L; Johnson, Janis S; Ortiz, Karel J; Yiannias, James A

    2006-04-01

    In summary, a wide variety of skin care products contain preservatives. Patients who are allergic to one of these preservatives may have either localized or widespread dermatitis. Affected patients may find it difficult to avoid thimerosal without the help of the health care provider because the use of these allergens is so widespread. Patch testing is an invaluable tool for patients who struggle with dermatitis. Antigen-avoidance lists that facilitate patient education about what products to avoid are available from the manufacturers of patch test allergens (for example, TRUE Test or Chemotechnique). These lists are helpful starting points for patients in that they provide general categories (for example, shampoos, soaps, or creams) of products that the patient should avoid. With these printed guidelines alone, patients must read skin care product labels carefully, looking for the names of their allergens as identified by patch tests as well as for any synonyms and cross-reactors of these allergens. Thus, patients may feel overwhelmed by hearing the names of allergens that are long and complex. After an allergen has been identified, the nurse can play a key role in helping patients understand their dermatitis and its management. Nurses are in a unique position to spend time educating patients about how to uncover the sources of specific allergens and, subsequently, how to avoid them. The Contact Allergen Replacement Database can help in this educational process by giving patients a shopping list of specific items that are free of the specific allergens causing their allergic contact dermatitis. PMID:16708674

  7. Digital Creation and Preservation Working Group Plan and oversee implementation for the Libraries' digital preservation program, particularly in relation

    E-print Network

    Schweik, Charles M.

    Digital Creation and Preservation Working Group Charge: Plan and oversee implementation for the Libraries' digital preservation program, particularly in relation to the Libraries' unique resources content creation and preservation. · Inventory current practices related to digital preservation

  8. Preservation of high resolution protein structure by cryo-electron microscopy of vitreous sections

    PubMed Central

    Sader, Kasim; Studer, Daniel; Zuber, Benoît; Gnaegi, Helmut; Trinick, John

    2009-01-01

    We have quantitated the degree of structural preservation in cryo-sections of a vitrified biological specimen. Previous studies have used sections of periodic specimens to assess the resolution present, but preservation before sectioning was not assessed and so the damage due particularly to cutting was not clear. In this study large single crystals of lysozyme were vitrified and from these X-ray diffraction patterns extending to better than 2.1 Ĺ were obtained. The crystals were high pressure frozen in 30% dextran, and cryo-sectioned using a diamond knife. In the best case, preservation to a resolution of 7.9 Ĺ was shown by electron diffraction, the first observation of sub-nanometre structural preservation in a vitreous section. PMID:19819624

  9. Numerical simulations of pulsed electric fields for food preservation: A review

    Microsoft Academic Search

    D. Gerlach; N. Alleborn; A. Baars; A. Delgado; J. Moritz; D. Knorr

    2008-01-01

    The application of pulsed electric fields is a novel technique to preserve foods in a non-thermal way. One key component of this technology is the treatment chamber, in which the food is exposed to a pulsed electric field to induce permeabilization of biological cells, e.g. to inactivate microorganisms. For a high efficiency of the method and a high product quality

  10. Addressing the Problem of Poorly Preserved Zoological Specimens: A Case Study with Turtles

    ERIC Educational Resources Information Center

    Thomas, Robert A.; Thomas, Aimée K.

    2015-01-01

    We present a new use for a poorly preserved turtle specimen that teachers can easily use in demonstrating vertebrate anatomy or adaptive herpetology at the high school or college level. We give special attention to illustrating the sigmoid flexure of the neck as certain turtles withdraw their heads. This ability is anatomically and biologically

  11. Personal care product preservatives: risk assessment and mixture toxicities with an industrial wastewater.

    PubMed

    Carbajo, Jose B; Perdigón-Melón, Jose A; Petre, Alice L; Rosal, Roberto; Letón, Pedro; García-Calvo, Eloy

    2015-04-01

    The aquatic toxicity of eight preservatives frequently used in personal care products (PCPs) (iodopropynyl butylcarbamate, bronopol, diazolidinyl urea, benzalkonium chloride, zinc pyrithione, propylparaben, triclosan and a mixture of methylchloroisothiazolinone and methylisothiazolinone) was assessed by means of two different approaches: a battery of bioassays composed of single species tests of bacteria (Vibrio fischeri and Pseudomonas putida) and protozoa (Tetrahymena thermophila), and a whole biological community resazurin-based assay using activated sludge. The tested preservatives showed considerable toxicity in the studied bioassays, but with a marked difference in potency. In fact, all biocides except propylparaben and diazolidinyl urea had EC50 values lower than 1 mg L(-1) in at least one assay. Risk quotients for zinc pyrithione, benzalkonium chloride, iodopropynyl butylcarbamate and triclosan as well as the mixture of the studied preservatives exceeded 1, indicating a potential risk for the process performance and efficiency of municipal sewage treatment plants (STPs). These four single biocides explained more than 95% of the preservative mixture risk in all bioassays. Each individual preservative was also tested in combination with an industrial wastewater (IWW) from a cosmetics manufacturing facility. The toxicity assessment was performed on binary mixtures (preservative + IWW) and carried out using the median-effect principle, which is a special case of the concept of Concentration Addition (CA). Almost 70% of all experiments resulted in EC50 values within a factor of 2 of the values predicted by the median-effect principle (CI values between 0.5 and 2). The rest of the mixtures whose toxicity was mispredicted by CA were assessed with the alternative concept of Independent Action (IA), which showed higher predictive power for the biological community assay. Therefore, the concept used to accurately predict the toxicity of mixtures of a preservative with a complex industrial wastewater depends on degree of biological complexity. PMID:25585550

  12. Implementing Preservation Strategies for Complex Multimedia Objects

    Microsoft Academic Search

    Jane Hunter; Sharmin Choudhury

    \\u000a Addressing the preservation and long-term access issues for digital resources is one of the key challenges facing informational\\u000a organisations such as libraries, archives, cultural institutions and government agencies today. A number of major initiatives\\u000a and projects have been established to investigate or develop strategies for preserving the burgeoning amounts of digital content\\u000a being produced. To date, the alternative preservation approaches

  13. Saliva Preservative for Diagnostic Purposes

    NASA Technical Reports Server (NTRS)

    Pierson, Duane L.; Mehta, Satish K.

    2012-01-01

    Saliva is an important body fluid for diagnostic purposes. Glycoproteins, glucose, steroids, DNA, and other molecules of diagnostic value are found in saliva. It is easier to collect as compared to blood or urine. Unfortunately, saliva also contains large numbers of bacteria that can release enzymes, which can degrade proteins and nucleic acids. These degradative enzymes destroy or reduce saliva s diagnostic value. This innovation describes the formulation of a chemical preservative that prevents microbial growth and inactivates the degradative enzymes. This extends the time that saliva can be stored or transported without losing its diagnostic value. Multiple samples of saliva can be collected if needed without causing discomfort to the subject and it does not require any special facilities to handle after it is collected.

  14. Coherence-Preserving Quantum Bits

    E-print Network

    D. Bacon; K. R. Brown; K. B. Whaley

    2002-08-05

    Real quantum systems couple to their environment and lose their intrinsic quantum nature through the process known as decoherence. Here we present a method for minimizing decoherence by making it energetically unfavorable. We present a Hamiltonian made up solely of two-body interactions between four two-level systems (qubits) which has a two-fold degenerate ground state. This degenerate ground state has the property that any decoherence process acting on an individual physical qubit must supply energy from the bath to the system. Quantum information can be encoded into the degeneracy of the ground state and such coherence-preserving qubits will then be robust to local decoherence at low bath temperatures. We show how this quantum information can be universally manipulated and indicate how this approach may be applied to a quantum dot quantum computer.

  15. Preservation Management of Digital Materials

    NSDL National Science Digital Library

    The World Wide Web gives us an unprecedented opportunity to provide people around the globe with access to significant historical and cultural works. However, the Web, by its very nature, requires those works to be in some electronically transmittable form before they can be made available, and most historical documents, by their very nature, are in a form well-removed from the computerized world of today. So how can this gap be bridged? And once a bridge is built, how can we be assured that it will stand over the decades and centuries to come? Preservation Management of Digital Materials, published by the UK's Joint Information Systems Committee (JISC), provides in-depth coverage of the procedures and issues encountered in the course of creating and storing digital documents. This publication provides easily-accessible information that should be of increasing interest to anyone involved with digital publication and archiving of existing works.

  16. TOMOBFLOW: feature-preserving noise filtering for electron tomography

    PubMed Central

    Fernandez, Jose-Jesus

    2009-01-01

    Background Noise filtering techniques are needed in electron tomography to allow proper interpretation of datasets. The standard linear filtering techniques are characterized by a tradeoff between the amount of reduced noise and the blurring of the features of interest. On the other hand, sophisticated anisotropic nonlinear filtering techniques allow noise reduction with good preservation of structures. However, these techniques are computationally intensive and are difficult to be tuned to the problem at hand. Results TOMOBFLOW is a program for noise filtering with capabilities of preservation of biologically relevant information. It is an efficient implementation of the Beltrami flow, a nonlinear filtering method that locally tunes the strength of the smoothing according to an edge indicator based on geometry properties. The fact that this method does not have free parameters hard to be tuned makes TOMOBFLOW a user-friendly filtering program equipped with the power of diffusion-based filtering methods. Furthermore, TOMOBFLOW is provided with abilities to deal with different types and formats of images in order to make it useful for electron tomography in particular and bioimaging in general. Conclusion TOMOBFLOW allows efficient noise filtering of bioimaging datasets with preservation of the features of interest, thereby yielding data better suited for post-processing, visualization and interpretation. It is available at the web site . PMID:19523199

  17. Retrieval analysis of motion preserving spinal devices and periprosthetic tissues

    PubMed Central

    Kurtz, Steven M.; Steinbeck, Marla; Ianuzzi, Allyson; van Ooij, André; Punt, Ilona M.; Isaza, Jorge; Ross, E.R.S.

    2009-01-01

    This article reviews certain practical aspects of retrieval analysis for motion preserving spinal implants and periprosthetic tissues as an essential component of the overall revision strategy for these implants. At our institution, we established an international repository for motion-preserving spine implants in 2004. Our repository is currently open to all spine surgeons, and is intended to be inclusive of all cervical and lumbar implant designs such as artificial discs and posterior dynamic stabilization devices. Although a wide range of alternative materials is being investigated for nonfusion spine implants, many of the examples in this review are drawn from our existing repository of metal-on-polyethylene, metal-on-metal lumbar total disc replacements (TDRs), and polyurethane-based dynamic motion preservation devices. These devices are already approved or nearing approval for use in the United States, and hence are the most clinically relevant at the present time. This article summarizes the current literature on the retrieval analysis of these implants and concludes with recommendations for the development of new test methods that are based on the current state of knowledge of in vivo wear and damage mechanisms. Furthermore, the relevance and need to evaluate the surrounding tissue to obtain a complete understanding of the biological reaction to implant component corrosion and wear is reviewed. PMID:25802641

  18. Preservation of the biomedical literature: an overview.

    PubMed Central

    Byrnes, M M

    1989-01-01

    The National Library of Medicine began to preserve its collection many years ago. This article presents a brief review of NLM's early conservation and microfilming programs, and describes the current activities of the library's new Preservation Section. Also mentioned are the complementary efforts of NLM staff who are involved in research into electronic imaging and the campaign to increase the use of alkaline paper in medical and scientific publishing. Goals of the National Preservation Plan for the Biomedical Literature are summarized and a report on progress in implementing the plan is provided. Results of the preservation needs assessment described in the accompanying article by Kirkpatrick are briefly analyzed. Recent efforts of the Commission on Preservation and Access, the National Endowment for the Humanities, the Research Libraries Group, and several international associations are described in terms of their potential benefit to preservation of the biomedical literature. The need to monitor new preservation technologies and preserve materials in audiovisual and electronic formats is emphasized. It is argued that with enough coordination, cooperation, and willingness among health sciences libraries to share the costs, the goal of preserving all of the important biomedical literature can be accomplished. PMID:2758180

  19. English stress preservation and Stratal Optimality Theory 

    E-print Network

    Collie, Sarah

    2008-01-01

    Since Chomsky & Halle (1968), English stress preservation – oríginal -> orěginálity, óbvious -> óbviousness – has been important in generative discussions of morphophonological interaction. This thesis carries out empirical ...

  20. Integrative radiation systems biology

    PubMed Central

    2014-01-01

    Maximisation of the ratio of normal tissue preservation and tumour cell reduction is the main concept of radiotherapy alone or combined with chemo-, immuno- or biologically targeted therapy. The foremost parameter influencing this ratio is radiation sensitivity and its modulation towards a more efficient killing of tumour cells and a better preservation of normal tissue at the same time is the overall aim of modern therapy schemas. Nevertheless, this requires a deep understanding of the molecular mechanisms of radiation sensitivity in order to identify its key players as potential therapeutic targets. Moreover, the success of conventional approaches that tried to statistically associate altered radiation sensitivity with any molecular phenotype such as gene expression proofed to be somewhat limited since the number of clinically used targets is rather sparse. However, currently a paradigm shift is taking place from pure frequentistic association analysis to the rather holistic systems biology approach that seeks to mathematically model the system to be investigated and to allow the prediction of an altered phenotype as the function of one single or a signature of biomarkers. Integrative systems biology also considers the data from different molecular levels such as the genome, transcriptome or proteome in order to partially or fully comprehend the causal chain of molecular mechanisms. An example for the application of this concept currently carried out at the Clinical Cooperation Group “Personalized Radiotherapy in Head and Neck Cancer” of the Helmholtz-Zentrum München and the LMU Munich is described. This review article strives for providing a compact overview on the state of the art of systems biology, its actual challenges, potential applications, chances and limitations in radiation oncology research working towards improved personalised therapy concepts using this relatively new methodology. PMID:24411063

  1. Preservation and conservation: separate disciplines, common goals

    Microsoft Academic Search

    CAROLYN BUTLER PALMER

    1995-01-01

    The conservation of the natural environment and the preservation of the built environment are fields often distinguished from one another both in application and in theory. At academic institutions, courses in preservation and conservation are usually offered in different departments and faculty members concerned with either of the two disciplines are tenured into different departments. Special interest groups usually target

  2. Preservation and fermentation: past, present and future

    Microsoft Academic Search

    R Paul Ross; S Morgan; C Hill

    2002-01-01

    Preservation of food and beverages resulting from fermentation has been an effective form of extending the shelf-life of foods for millennia. Traditionally, foods were preserved through naturally occurring fermentations, however, modern large scale production generally now exploits the use of defined strain starter systems to ensure consistency and quality in the final product. This review will mainly focus on the

  3. Preserving Patterns in Bipartite Graph Partitioning

    Microsoft Academic Search

    Tianming Hu; Chao Qu; Chew Lim Tan; Sam Yuan Sung; Wenjun Zhou

    2006-01-01

    This paper describes a new bipartite formulation for word-document co-clustering such that hyperclique pat- terns, strongly affiliated documents in this case, are guaranteed not to be split into different clusters. Our approach for pattern preserving clustering consists of three steps: mine maximal hyperclique patterns, form the bipartite, and partition it. With hyperclique pat- terns of documents preserved, the topic of

  4. A Big Problem for Magellan: Food Preservation

    ERIC Educational Resources Information Center

    Galvao, Cecilia; Reis, Pedro; Freire, Sofia

    2008-01-01

    In this paper, we present data related to how a Portuguese teacher developed the module "A big problem for Magellan: Food preservation." Students were asked to plan an investigation in order to identify which were the best food preservation methods in the XV and XVI centuries of Portuguese overseas navigation, and then establish a parallel between…

  5. LCA of food-preservation technologies

    Microsoft Academic Search

    Guillermo Pardo; Jaime Zufía

    The environmental impacts of some traditional and novel food preservation technologies have been evaluated through LCA methodology in order to provide environmental criteria when selecting preservation methods for foods, as a way to develop more efficient and sustainable food products throughout its whole life cycle. Four thermal and non-thermal techniques (autoclave pasteurization, microwaves, high hydrostatic pressure and modified atmosphere packaging)

  6. Organic Acids and Meat Preservation: A Review

    Microsoft Academic Search

    Maria M. Theron; Jan F. R. Lues

    2007-01-01

    Despite the application of various preservation methods, many problems are still encountered as a result of food spoilage and food poisoning. There is increasing demand for foods produced with milder treatments, and the movement towards more natural and even certified organic foods has been the fastest growing sector of the food industry over the last decade. The interest in bio-preservation

  7. Preservation Film: Platform for Digital Access Systems.

    ERIC Educational Resources Information Center

    Jones, C. Lee

    Preservation efforts for an increasingly digitally oriented future have turned to advanced and improved methods of preservation on microfilm, which has a life expectancy of more than 500 years when properly prepared, stored, and managed, and can support a wide range of digital access systems. Computer controlled cameras can provide significantly…

  8. A Synopsis of Format-Preserving Encryption

    E-print Network

    Rogaway, Phillip

    A Synopsis of Format-Preserving Encryption Phillip Rogaway Department of Computer Science University of California, Davis, USA March 27, 2010 Abstract Format-preserving encryption (FPE) encrypts a plaintext of some specified format into a ciphertext of the same format--for example, encrypting a social

  9. Preservation of Kefir Grains, a Comparative Study

    Microsoft Academic Search

    G. L. Garrote; A. G. Abraham; G. L. De Antoni

    1997-01-01

    The microflora of kefir grains of household origin was isolated and identified. At least two lactococci, two lactobacilli, two yeast and one mould were detected.Different methods for kefir grain preservation were studied. Metabolic activity of grains preserved frozen at ?20 °C and ?80 °C and grains stored at 4 °C was evaluated.Grains stored at ?20 °C and ?80 °C maintained

  10. Home Food Preservation Training for Extension Educators

    ERIC Educational Resources Information Center

    Goard, Linnette Mizer; Hill, Melinda; Shumaker, Katharine; Warrix, Marisa

    2013-01-01

    During times of economic downturn, there has been an increased interest in home food preservation. As the primary resource for current research-based recommendations, a team of Extension Family and Consumer Sciences educators with specialization in food safety and food preservation responded to this demand by developing a standardized food…

  11. Whale Preservation. Grades Five to Nine.

    ERIC Educational Resources Information Center

    Racicot, Darlene

    Dedicated to the conservation and preservation of whales, dolphins, and porpoises through public education, this instructional unit for grades 5-9 provides current (1993) facts, lesson plans, activities, and conservation and preservation techniques. Interdisciplinary activities involve students in debates, critical thinking, research, and…

  12. GUIDES TO POLLUTION PREVENTION: WOOD PRESERVING INDUSTRY

    EPA Science Inventory

    This guide provides an overview of the wood preserving industry and presents options for minimizing waste generation through source,reduction and recycling. reatment with both oilborne and waterborne preservatives is discussed in this guide. owever, because in the United States, ...

  13. Boric Acid Preservation of Urine Samples

    Microsoft Academic Search

    I. A. Porter; J. Brodie

    1969-01-01

    Comparison of the results of bacteriological culture and microscopic examination of urine samples transported over a distance by the dip-inoculum transport medium, ice-box, and boric acid preservation with “natural” urine specimens showed that the last, in a final concentration of 1·8%, gives satisfactory preservation.

  14. Selection for Preservation of Research Library Materials.

    ERIC Educational Resources Information Center

    Commission on Preservation and Access, Washington, DC.

    Intended to stimulate further thinking on the part of the community of scholars who must have a voice in selection strategies, this report addresses: (1) the distinction between preservation (saving the content of a brittle book) and conservation (saving the original item); (2) differences in the needs and objectives of preservation across the…

  15. Spi Calculus Translated to -Calculus Preserving

    E-print Network

    Parrow, Joachim

    Spi Calculus Translated to -Calculus Preserving May-Testing Michael Baldamus, Joachim Parrow, Bj Technical report 2003-063 December 2003 ISSN 1404-3203 #12;Spi Calculus Translated to -Calculus Preserving of the spi- calculus into the more basic -calculus and establish its correctness with respect to a formal

  16. Chemoradiotherapy Laryngeal Preservation for Advanced Hypopharyngeal Cancer

    Microsoft Academic Search

    Shyh-Kuan Tai; Muh-Hwa Yang; Ling-Wei Wang; Tung-Lung Tsai; Pen-Yuan Chu; Yi-Feng Wang; Jui-Lin Huang; Shyue-Yih Chang

    Objective: Laryngeal preservation is a challenge for the treatment of advanced hypopharyn- geal cancer. The objective of this study is to evaluate the results of chemoradiotherapy laryn- geal preservation for advanced hypopharyngeal cancer at a single institute and the impact of treatment factors on prognosis. Methods: The study population consisted of 42 consecutive patients with resectable stage III-IV hypopharyngeal cancer.

  17. PRESERVATION HOME CANNING is becoming more

    E-print Network

    Watson, Craig A.

    to can food and have some fun, come to our hands-on and informative food preservation classes to learnPRESERVATION HOME CANNING is becoming more and more popular in Florida. If you want to learn how' markets and need to learn about the Florida Cottage Food Rules, University of Florida Cooperative

  18. Preservation for Institutional Repositories: practical and invisible

    Microsoft Academic Search

    Steve Hitchcock; Tim Brody; Jessie M. N. Hey; Leslie Carr

    With good prospects for growth in IR contents, in the UK due to the proposed RCUK policy on mandating deposit of papers on funded work, and internationally due to the Berlin 3 recommendation, it is timely to investigate preservation solutions for IRs. The paper takes a broad view of preservation issues for IRs - based on practice, experience and visions

  19. Effect of Magnolol on in VitroMitochondrial Lipid Peroxidation and Isolated Cold-Preserved Warm-Reperfused Rat Livers

    Microsoft Academic Search

    Jen-Hwey Chiu; Juo-Chi Wang; Wing-Yiu Lui; Chew-Wun Wu; Chuang-Ye Hong

    1999-01-01

    Background\\/aim.A mechanism suggested to cause injury to preserved organs is the generation of oxygen free radicals. Lipid peroxidation is one of the biological damages caused by oxygen free radicals. It is our aim to investigate whether magnolol, a strong antioxidant, suppresses the generation of oxygen free radicals and improves the viability of cold-preserved warm-reperfused rat livers.Materials and methods. In vitrolipid

  20. Quantum channels that preserve the commutativity

    E-print Network

    Sixia Yu; Chengjie Zhang; Qing Chen; C. H. Oh

    2011-12-24

    We identify and characterize all the local quantum channels that preserves the set of classical states, i.e., does not create any quantum correlations. At first we show that the quantum correlations cannot be created from without if and only if the local quantum channel preserves the commutativity, i.e., the images of any two commuting states also commute. And then we provide an operational necessary and sufficient criterion for a known quantum channel to preserve the commutativity as well as a single observable to witness an arbitrary unknown commutativity-preserving channel. All the distance-based measures for quantum correlations, e.g., the geometric measure, are non-increasing while the quantum discord defined by von Neumann measurements can be increasing or decreasing under local commutativity-preserving channels.

  1. Preserving monotonicity in anisotropic diffusion

    SciTech Connect

    Sharma, Prateek [Astronomy Department, University of California, Berkeley, CA 94720 (United States); Princeton Plasma Physics Laboratory, Forrestal Campus, Princeton, NJ 08543 (United States)], E-mail: psharma@astro.berkeley.edu; Hammett, Gregory W. [Princeton Plasma Physics Laboratory, Forrestal Campus, Princeton, NJ 08543 (United States)

    2007-11-10

    We show that standard algorithms for anisotropic diffusion based on centered differencing (including the recent symmetric algorithm) do not preserve monotonicity. In the context of anisotropic thermal conduction, this can lead to the violation of the entropy constraints of the second law of thermodynamics, causing heat to flow from regions of lower temperature to higher temperature. In regions of large temperature variations, this can cause the temperature to become negative. Test cases to illustrate this for centered asymmetric and symmetric differencing are presented. Algorithms based on slope limiters, analogous to those used in second order schemes for hyperbolic equations, are proposed to fix these problems. While centered algorithms may be good for many cases, the main advantage of limited methods is that they are guaranteed to avoid negative temperature (which can cause numerical instabilities) in the presence of large temperature gradients. In particular, limited methods will be useful to simulate hot, dilute astrophysical plasmas where conduction is anisotropic and the temperature gradients are enormous, e.g., collisionless shocks and disk-corona interface.

  2. Updates in biological therapies for knee injuries: anterior cruciate ligament.

    PubMed

    da Silveira Franciozi, Carlos Eduardo; Ingham, Sheila Jean McNeill; Gracitelli, Guilherme Conforto; Luzo, Marcus Vinicius Malheiros; Fu, Freddie H; Abdalla, Rene Jorge

    2014-09-01

    There have been many advances in anterior cruciate ligament reconstruction (ACLR) techniques incorporating biological treatment. The aim of this review is to discuss the recent contributions that may enlighten our understanding of biological therapies for anterior cruciate ligament (ACL) injuries and improve management decisions involving these enhancement options. Three main biological procedures will be analyzed: bio-enhanced ACL repair, bio-enhanced ACLR scrutinized under the four basic principles of tissue engineering (scaffolds, cell sources, growth factors/cytokines including platelet-rich plasma, and mechanical stimuli), and remnant-preserving ACLR. There is controversial information regarding remnant-preserving ACLR, since different procedures are grouped under the same designation. A new definition for remnant-preserving ACLR surgery is proposed, dividing it into its three major procedures (selective bundle augmentation, augmentation, and nonfunctional remnant preservation); also, an ACL lesion pattern classification and a treatment algorithm, which will hopefully standardize these terms and procedures for future studies, are presented. PMID:25070265

  3. Digital Preservation: A Time Bomb for Digital Libraries

    Microsoft Academic Search

    Margaret Hedstrom

    1998-01-01

    Abstract. The difficulty and expense of preserving digital information is a potential impediment to digital library development. Preservation of traditional materials became,more,successful and systematic after libraries and archives integrated preservation into overall planning and resource allocation. Digital preservation is largely experimental and replete with the risks associated with untested methods. Digital preservation strategies are shaped by the needs and constraints

  4. Evaluating preservation strategies for audio and video files

    E-print Network

    Rauber,Andreas

    Evaluating preservation strategies for audio and video files Carl Rauch1 , Franz Pavuza2 , Stephan and the wide range of preservation strategies make the choice for an opti- mal preservation solution a highly and on the evaluation of different input formats for long-term preservation. 1 Introduction The long-term preservation

  5. Biological Agents

    MedlinePLUS

    Biological agents include bacteria, viruses, fungi, other microorganisms and their associated toxins. They have the ability to ... about some of the most virulent and prevalent biological agents. Anthrax . Anthrax is an acute infectious disease ...

  6. Biological Filters.

    ERIC Educational Resources Information Center

    Klemetson, S. L.

    1978-01-01

    Presents the 1978 literature review of wastewater treatment. The review is concerned with biological filters, and it covers: (1) trickling filters; (2) rotating biological contractors; and (3) miscellaneous reactors. A list of 14 references is also presented. (HM)

  7. Fertility preservation in female classic galactosemia patients

    PubMed Central

    2013-01-01

    Almost every female classic galactosemia patient develops primary ovarian insufficiency (POI) as a diet-independent complication of the disease. This is a major concern for patients and their parents, and physicians are often asked about possible options to preserve fertility. Unfortunately, there are no recommendations on fertility preservation in this group. The unique pathophysiology of classic galactosemia with a severely reduced follicle pool at an early age requires an adjusted approach. In this article recommendations for physicians based on current knowledge concerning galactosemia and fertility preservation are made. Fertility preservation is only likely to be successful in very young prepubertal patients. In this group, cryopreservation of ovarian tissue is currently the only available technique. However, this technique is not ready for clinical application, it is considered experimental and reduces the ovarian reserve. Fertility preservation at an early age also raises ethical questions that should be taken into account. In addition, spontaneous conception despite POI is well described in classic galactosemia. The uncertainty surrounding fertility preservation and the significant chance of spontaneous pregnancy warrant counseling towards conservative application of these techniques. We propose that fertility preservation should only be offered with appropriate institutional research ethics approval to classic galactosemia girls at a young prepubertal age. PMID:23866841

  8. Music biology: all this useful beauty.

    PubMed

    Clark, Camilla N; Downey, Laura E; Warren, Jason D

    2014-03-17

    Some healthy people fail to derive pleasure from music despite otherwise preserved perceptual and reward responses. Such 'musical anhedonia' implies the existence of music-specific brain reward mechanisms, which could provide a substrate for music to acquire biological value. PMID:24650910

  9. Propagating quantum coherence for a biological advantage

    Microsoft Academic Search

    Stephan Hoyer; Akihito Ishizaki; K. Birgitta Whaley

    2011-01-01

    Photosynthetic antennas need to efficiently transfer absorbed energy through chains of pigment molecules to reaction centers, where excitations induce charge separation. Experimental evidence shows that a variety of photosynthetic systems can preserve quantum beats in this energy transfer process, even at room temperature. However, whether this quantum coherence arises in vivo and whether it has any biological function have remained

  10. Biological resources conservation through ecotourism development

    Microsoft Academic Search

    M. Al-Sayed; A. Al-langawi

    2003-01-01

    Wildlife conservation deals with resources that live and move. Fauna and flora have a certain capacity for adaptation to environmental changes and strong instinctive trends to fend for themselves. Indigenous species require very small favors to stay alive. Their elemental need for food, water, and living spaces should therefore be preserved. Biological resources conservation could be achieved by natural selection

  11. Scientific Data Preservation, Copyright and Open Science

    NASA Astrophysics Data System (ADS)

    Mouron, Philippe

    The purpose of this paper is to sum up the terms of a discussion about the legal aspects of scientific data preservation. This discussion was presented at the Marseille workshop organized on November 14th. This paper is only a basis for forthcoming works about the main project of preserving scientific data (PREDONx). The paper is focused on intellectual property rights, such as copyright or patent, and their effect on the use of scientific data. Open Science appears to be the best way to ensure the preservation, but also the publication, of scientific data.

  12. Preservation Methods Utilized for Space Food

    NASA Technical Reports Server (NTRS)

    Vodovotz, Yael; Bourland, Charles

    2000-01-01

    Food for manned space flight has been provided by NASA-Johnson Space Center since 1962. The various mission scenarios and space craft designs dictated the type of food preservation methodologies required to meet mission objectives. The preservation techniques used in space flight include freeze-dehydration, thermostabilization, irradiation, freezing and moisture adjustment. Innovative packaging material and techniques enhanced the shelf-stability of the food items. Future space voyages may include extended duration exploration missions requiring new packaging materials and advanced preservation techniques to meet mission goals of up to 5-year shelf-life foods.

  13. Morphology-preserving chemical conversion of bioorganic and inorganic templates

    NASA Astrophysics Data System (ADS)

    Vernon, Jonathan Paul

    The generation of nanostructured assemblies with complex (three-dimensional, 3D) self-assembled morphologies and with complex (multicomponent) tailorable inorganic compositions is of considerable technological and scientific interest. This dissertation demonstrates self-assembled 3D organic templates of biogenic origin can be converted into replicas comprised of numerous other functional nanocrystalline inorganic materials. Nature provides a spectacular variety of biologically-assembled 3D organic structures with intricate, hierarchical (macro-to-micro-to-nanoscale) morphologies. Such processing on readily-available structurally complex templates provides a framework for chemical conversion of synthetic organic templates and, potentially, production of organic/inorganic composites. Four specific research thrusts are detailed in this document. First, chemical conversion of a nanostructured bioorganic template into a multicomponent oxide compound (tetragonal BaTiO3) via SSG coating and subsequent morphology-preserving microwave hydrothermal processing is demonstrated. Second, morphology-preserving chemical conversion of bioorganic templates into hierarchical photoluminescent microparticles is demonstrated to reveal both the dramatic change in properties such processing can provide, and the potential utility of chemically transformed templates in anti-counterfeiting / authentication applications. Third, determination of the reaction mechanism(s) for morphology-preserving microwave hydrothermal conversion of TiO2 to BaTiO3, through Au inert markers on single crystal rutile titania, is detailed. Finally, utilization of constructive coating techniques (SSG) and moderate temperature (< 500°C) heat treatments to modify and replicate structural color is coupled with deconstructive focused ion beam microsurgery to prepare samples for microscale structure interrogation. Specifically, the effects of coating thickness and composition on reflection spectra of structurally colored templates are examined. Also, the effects of the replacement of natural material with higher index of refraction inorganic materials on optical properties are discussed. The three processing research thrusts constituting chapters 1, 2 and 4 take advantage of moderate temperature processing to ensure nanocrystalline materials, either for shape preservation or to prevent scattering in optical applications. The research thrust detailed in chapter 3 examines hydrothermal conversion of TiO2 to BaTiO3, not only to identify the reaction mechanism(s) involved in hydrothermal conversion under morphology-preserving conditions, but also to introduce inert marker experiments to the field of microwave hydrothermal processing.

  14. 21 CFR 146.152 - Orange juice with preservative.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 2013-04-01 2013-04-01 false Orange juice with preservative. 146.152 Section...Fruit Juices and Beverages § 146.152 Orange juice with preservative. (a) Orange juice with preservative is the food prepared...

  15. 21 CFR 146.152 - Orange juice with preservative.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 2012-04-01 2012-04-01 false Orange juice with preservative. 146.152 Section...Fruit Juices and Beverages § 146.152 Orange juice with preservative. (a) Orange juice with preservative is the food prepared...

  16. 22 CFR 98.2 - Preservation of Convention records.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 false Preservation of Convention records. 98.2 Section 98.2...RELATED SERVICES INTERCOUNTRY ADOPTION-CONVENTION RECORD PRESERVATION § 98.2 Preservation of Convention records. Once the...

  17. 22 CFR 98.2 - Preservation of Convention records.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 false Preservation of Convention records. 98.2 Section 98.2...RELATED SERVICES INTERCOUNTRY ADOPTION-CONVENTION RECORD PRESERVATION § 98.2 Preservation of Convention records. Once the...

  18. An Overview of the U.S. Wood Preserving Industry

    E-print Network

    An Overview of the U.S. Wood Preserving Industry Richard Vlosky Todd Shupe Louisiana Forest · Overview of the Study · Respondent Demographics · Preservatives · Industry Overview · Waterborne #12;Outline · Overview of the Study · Respondent Demographics · Preservatives · Industry Overview

  19. PRESERVATION OF CONVEXITY OF SOLUTIONS TO PARABOLIC EQUATIONS

    E-print Network

    Janson, Svante

    PRESERVATION OF CONVEXITY OF SOLUTIONS TO PARABOLIC EQUATIONS condition* *s on the coefficients of a parabolic equation for convexity to be preserved. A* * parabolic equation is said to preserve convexity if given a convex initial conditio* *n, any

  20. Privacy Preserving Data Generation for Database Application Performance Testing

    E-print Network

    Wang, Yongge

    Privacy Preserving Data Generation for Database Application Performance Testing Yongge Wang, Xintao the feasibility and techniques for privacy preserving synthetic database generation that can be used for database preserving software performance testing. 1 Introduction Functionality and performance testing is essential

  1. 76 FR 78021 - Description of Boundary Addition, Noatak National Preserve

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-15

    ...of Boundary Addition, Noatak National Preserve AGENCY: National Park Service, Interior...legal description of the Noatak National Preserve and Wilderness Addition. FOR FURTHER...ADDRESSES: The map of the Noatak National Preserve and Noatak Wilderness is available...

  2. 21 CFR 146.154 - Concentrated orange juice with preservative.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...false Concentrated orange juice with preservative. 146.154 Section 146.154 ...154 Concentrated orange juice with preservative. (a) Concentrated orange juice with preservative complies with the requirements...

  3. 21 CFR 146.154 - Concentrated orange juice with preservative.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...false Concentrated orange juice with preservative. 146.154 Section 146.154 ...154 Concentrated orange juice with preservative. (a) Concentrated orange juice with preservative complies with the requirements...

  4. FOOD PRESERVATION RESOURCES PRESSURE GAUGE TESTING/CLEAR JEL

    E-print Network

    Barth, Jack

    FOOD PRESERVATION RESOURCES PRESSURE GAUGE TESTING/CLEAR JEL RESOURCE LIST BY COUNTY Updated June and So Easy to Preserve (food preservation/safety books) at the office and at workshops and fair booths

  5. BIOLOGY PROGRAMME ADVISORS BIOLOGY MAJOR

    E-print Network

    Gunawardena, Arunika

    5076 494.1853 Bill.Pohajdak@dal.ca Jonathan Wright LSC 6088 494-6468 J.M.Wright@dal.ca MARINE BIOLOGYBIOLOGY PROGRAMME ADVISORS BIOLOGY MAJOR (20 credit or 15 credit concentration) Todd Bishop LSC.Welsh@dal.ca BIOLOGY CO-OP (Majors and Honours) Mindy McCarville LSC 7017 494-7072 Mindy.McCarville@dal.ca BIOLOGY

  6. Cracks preserve kimberlite melt composition

    NASA Astrophysics Data System (ADS)

    Brett, R. C.; Vigouroux-Caillibot, N.; Donovan, J. J.; Russell, K.

    2009-12-01

    The chemical composition of kimberlite melts has previously been estimated by measuring aphanitic intrusive rocks (deposit composition) or by partial melting experiments on carbonated lherzolites (source composition). Pervasively altered, degassed and contaminated material preclude the determination of the primitive melt composition. Here we present data on melt compositions trapped in unaltered olivine cracks that have been healed and overgrown prior to shallow level emplacement. During the ascent of kimberlite magma the prograding crack tip samples mantle peridotite xenoliths. Xenoliths rapidly disaggregate over the first few kilometers of transport producing a population of olivine xenocrysts that are released to the fluid-rich melt. Rapid ascent of the kimberlite magma causes depressurization and creates internal elastic stresses in the olivine crystals that can only be alleviated by volumetric expansion or brittle failure. On the time scales operative during kimberlite ascent volume expansion is negligible and brittle failure occurs. Small wetting angles between the fluid-rich melt and olivine allow infiltration of the melt into the crack. These very thin cracks (<5 µm) heal rapidly and preserve primary kimberlitic material en route to the surface. We use the electron microprobe with a focused beam (interaction volume less than 2 µm) to analyze the small volumes of material found in the healed cracks of the olivine. We analyzed for 18 elements including oxygen, which we obtained by utilizing a non-linear time dependent intensity acquisition and empirically determined mass absorption coefficients. By accurately knowing the amount of oxygen in a sample, we assign oxygen molecules to all other analyzed elements (e.g. MgO, Al2O3) and the remaining oxygen is assigned to hydrogen and carbon. The analysis total is used as a constraint on the proportion of each species. Mg/Ca ratios of the cracks vary from 0.6-5 indicating a compositional continuum between alkali-poor, carbonate-rich melt and Mg-rich silicate melt. OH/CO2 ratios (0-7) and other volatiles (S, F, Cl) are variable and do not correlate with any of the other major elements, consistent with a variably degassed fluid phase. Element associations indicated that Ca, Ni, Ba and Sr co-vary and are inversely related to Mg, Si, Fe, (and several other minor elements). In summary, crack-filling material is Ca and Mg-rich (up to 55 wt.% CaO+MgO), silica-poor (11-32 wt.% SiO2) and are volatile rich ( up to 28 wt.%).

  7. Entanglement preservation: The Sleeping Beauty approach

    NASA Astrophysics Data System (ADS)

    Korotkov, Alexander N.

    2012-02-01

    Two-qubit entanglement can be preserved by partially measuring the qubits to leave them in a 'lethargic' state. The original state is restored using quantum measurement reversal after the qubits have travelled through a decoherence channel.

  8. TREATABILITY STUDIES FOR WOOD PRESERVING SITES

    EPA Science Inventory

    The U.S. Environmental Protection Agency (EPA), National Risk Management Research Laboratory (NRMRL), Site Management Support Branch, conducted a comprehensive treatability project for wood preserving sites in 1995 and 1996. This is a compilation report on the treatability studi...

  9. Distributed Shuffling for Preserving Access Confidentiality

    E-print Network

    Samarati, Pierangela

    Distributed Shuffling for Preserving Access Confidentiality Sabrina De Capitani di Vimercati1 confidentiality of data whose management is outsourced to the cloud [8]. Complementing data confidentiality, more recent approaches have also considered protection of access and pattern confidentiality, which require

  10. Area preserving deformation of multiresolution Stefanie Hahmann

    E-print Network

    Paris-Sud XI, Université de

    Area preserving deformation of multiresolution curves Stefanie Hahmann , Basile Sauvage , Georges We describe a method for multiresolution deformation of closed planar curves that keeps the enclosed area constant. We use a wavelet based multiresolution rep- resentation of the curves

  11. Preserving the Scholarly Side of the Web 

    E-print Network

    Mikeal, Adam; Green, Cody; Maslov, Alexey; Phillips, Scott; Leggett, John

    2007-07-12

    in current web standards. We also describe the two common preservation mechanisms, emulation and migration, as well as our selection of the latter for our particular case. Finally, we compare two approaches to migration, automatic and manual, and discuss...

  12. Transparent, Sensation-Preserving Haptic Rendering

    E-print Network

    Otaduy, Miguel A.

    ;6-DoF Haptic Rendering #12;Overview Rendering Algorithm Geometric Features (Collision Detection;Rendering Algorithm Collision Detection and Response Rigid Body Simulation Haptic Device and ControllerTransparent, Sensation- Preserving Haptic Rendering Miguel A. Otaduy http

  13. National Center for Home Food Preservation

    NSDL National Science Digital Library

    Home canning and food preservation is very much alive in parts of the United States, and the National Center for Home Food Preservation at the University of Georgia Cooperative Extension Service has canners', picklers', and curers'/smokers' interests at heart. The Center advises people on how to can foods safely, along with offering recipes for how to make delicious foods. The most notable freebie the website offers visitors is "Preserving Food at Home: A Self-Study." It is a self-paced, online course that teaches "Introduction to Food Preservation," "General Canning," "Canning Acid Foods," and "Canning Low-Acid Foods." The "Multimedia" section has "Videos," "Slideshows," "Graphics Galleries," and "Tutorials" to make the process of canning, pickling, drying, and freezing come to life. The "Graphics Galleries" are for those who give presentations, papers, lectures, etc., for educational and not-for-profit purposes. Some of the galleries include a "Drying Gallery," "Equipment Gallery," "Pickling Gallery," and a "Raw Foods Gallery."

  14. Heart failure with preserved ejection fraction

    PubMed Central

    Gladden, James D.; Linke, Wolfgang A.

    2014-01-01

    As part of this series devoted to heart failure (HF), we review the epidemiology, diagnosis, pathophysiology, and treatment of HF with preserved ejection fraction (HFpEF). Gaps in knowledge and needed future research are discussed. PMID:24663384

  15. Data Preservation in High Energy Physics

    E-print Network

    David M. South

    2011-01-17

    Data from high-energy physics (HEP) experiments are collected with significant financial and human effort and are in many cases unique. At the same time, HEP has no coherent strategy for data preservation and re-use, and many important and complex data sets are simply lost. In a period of a few years, several important and unique experimental programs will come to an end, including those at HERA, the b-factories and at the Tevatron. An inter-experimental study group on HEP data preservation and long-term analysis (DPHEP) was formed and a series of workshops were held to investigate this issue in a systematic way. The physics case for data preservation and the preservation models established by the group are presented, as well as a description of the transverse global projects and strategies already in place.

  16. How to Press and Preserve Plants

    NSDL National Science Digital Library

    In this Biodiversity Counts activity, students learn how to press and preserve plant specimens. The online page includes illustrated instructions about how to layer and maintain pressings until the specimens have dried.

  17. Laboratory Exercise to Evaluate Hay Preservatives.

    ERIC Educational Resources Information Center

    McGraw, R. L.; And Others

    1990-01-01

    Presented is a laboratory exercise designed to demonstrate the effects of moisture on hay preservation products in a manner that does not require large amounts of equipment or instructor time. Materials, procedures, and probable results are discussed. (CW)

  18. Digital Preservation: A Campus-Wide Perspective

    E-print Network

    Fyffe, Richard; Ludwig, Deborah; Warner, Beth Forrest

    2005-08-30

    .au/padi/topics/20.html>. 6. CCSDS 650.0-B-1: Reference Model for an Open Archival Information System (OAIS), Blue Book, Issue 1, January 2002, . About the Authors At the University of Kansas, Richard Fyffe...://www.dpconline.org/docs/lavoie_OAIS.pdf>. #0;? National Library of Australia, PADI: Preserving Access to Digital Information, . #0;? Preserving Digital Information: Report of the Task Force on Archiving of Digital Information, Commission...

  19. Time-stepping and preserving orthonormality

    Microsoft Academic Search

    Desmond J. Higham

    1997-01-01

    Certain applications produce initial value ODEs whose solutions, regarded as time-dependent matrices, preserve orthonormality.\\u000a Such systems arise in the computation of Lyapunov exponents and the construction of smooth singular value decompositions of\\u000a parametrized matrices. For some special problem classes, there exist time-stepping methods that automatically inherit the\\u000a orthonormality preservation. However, a more widely applicable approach is to apply a standard

  20. Preservation of methane hydrate at 1 atm

    USGS Publications Warehouse

    Stern, L.A.; Circone, S.; Kirby, S.H.; Durham, W.B.

    2001-01-01

    A "pressure-release" method that enables reproducible bulk preservation of pure, porous, methane hydrate at conditions 50 to 75 K above its equilibrium T (193 K) at 1 atm is refined. The amount of hydrate preserved by this method appears to be greatly in excess of that reported in the previous citations, and is likely the result of a mechanism different from ice shielding.

  1. Metallothionein in rabbit kidneys preserved for transplantation

    SciTech Connect

    Elinder, C.G.; Lundgren, G.; Nordberg, M.; Palm, B.; Piscator, M.

    1984-03-01

    Thirteen rabbits were given cadmium injections to achieve cadmium concentrations in kidney cortex ranging from 0.05 to 1 mmole Cd/kg wet weight. Another four animals served as controls. One kidney from each animal was frozen directly to -70/sup 0/C whereas the other kidney was kept for 24 hr at +4/sup 0/C in a preservative (Sachs' solution) to simulate conditions for preservation of human donor kidneys before transplantation. Protein binding of cadmium, zinc and copper in kidney homogenates and the concentration of metallothionein (MT) were measured in the kidney that was frozen directly and in the kidney that had been preserved. No gross differences in either the protein binding of cadmium, zinc and copper or in the MT content were seen between the directly frozen and preserved kidney from the same animal. This indicates that MT is not rapidly broken down in rabbit kidneys which have been preserved similarly to human donor kidneys for 24 hr in a standard preservative solution prior to a transplantation. 27 references, 3 figures, 1 table.

  2. Data Preservation in High Energy Physics

    E-print Network

    Roman Kogler; David M. South; Michael Steder

    2011-11-11

    Data from high-energy physics experiments are collected with significant financial and human effort and are mostly unique. However, until recently no coherent strategy existed for data preservation and re-use, and many important and complex data sets have simply been lost. While the current focus is on the LHC at CERN, in the current period several important and unique experimental programs at other facilities are coming to an end, including those at HERA, b-factories and the Tevatron. To address this issue, an inter-experimental study group on HEP data preservation and long-term analysis (DPHEP) was convened at the end of 2008. The group now aims to publish a full and detailed review of the present status of data preservation in high energy physics. This contribution summarises the results of the DPHEP study group, describing the challenges of data preservation in high energy physics and the group's first conclusions and recommendations. The physics motivation for data preservation, generic computing and preservation models, technological expectations and governance aspects at local and international levels are examined.

  3. On single qubit quantum process tomography for trace-preserving and nontrace-preserving maps

    E-print Network

    Ramesh Bhandari; Nicholas A. Peters

    2015-02-03

    We review single-qubit quantum process tomography for trace-preserving and nontrace-preserving processes, and derive explicit forms of the general constraints for fitting experimental data. These forms provide additional insight into the structure of the process matrix as well as reveal a tighter bound on the trace of a nontrace-preserving process than has been previously stated. We also describe, for completeness, how to incorporate measured imperfect input states.

  4. Molecular Cell Biology Cell Biology and Anatomy ----------------------------------------------------------------------------

    E-print Network

    Miyashita, Yasushi

    Molecular Cell Biology A G C T 14 Cell Biology and Anatomy associated proteins (MAPs) using molecular cell biology, biophysics, structural biology, and molecular genetics. ·Molecular cell biological study of KIFs ·Studies of the mechanism for recognition of and binding

  5. Ridge Preservation for Implant Therapy: a Review of the Literature

    PubMed Central

    Tomlin, Elizabeth M; Nelson, Shelby J; Rossmann, Jeffrey A

    2014-01-01

    Healing of the extraction socket after tooth removal involves retention of the blood clot followed by a sequence of events that lead to changes in the alveolar process in a three dimensional fashion. This normal healing event results in a minimal loss of vertical height (around 1 mm), but a substantial loss of width in the buccal-lingual plane (4-6 mm). During the first three months following extraction that loss has been shown to be significant and may result in both a hard tissue and soft tissue deformity affecting the ability to restore the site with acceptable esthetics. Procedures that reduce the resorptive process have been shown to be predictable and potentially capable of eliminating secondary surgery for site preparation when implant therapy is planned. The key element is prior planning by the dental therapist to act at the time of extraction to prevent the collapse of the ridge due to the loss of the alveolus. Several techniques have been employed as ridge preservation procedures involving the use of bone grafts, barrier membranes and biologics to provide a better restorative outcome. This review will explore the evidence behind each technique and their efficacy in accomplishing site preparation. The literature does not identify a single technique as superior to others; however, all accepted therapeutic procedures for ridge preservation have been shown to be more effective than blood clot alone in randomized controlled studies. PMID:24893595

  6. Stabilization and preservation of Lactobacillus acidophilus in saccharide matrices.

    PubMed

    Conrad, P B; Miller, D P; Cielenski, P R; de Pablo, J J

    2000-08-01

    Lyophilization and vacuum- or spray-drying are some of the most useful techniques for preserving foods, agricultural products, and pharmaceuticals. Biological materials, however, can be irreversibly damaged during these treatments. Therefore, it is essential to design protective agents to preserve protein activity and cell viability. In this paper we examine the use of alpha, alpha-trehalose-borate systems as protectants for Lactobacillus acidophilus during freeze- and vacuum-drying. Trehalose was found to be an effective protectant for freeze-dried and vacuum-dried samples, and it is equivalent to a protective formulation which is in current industrial use. It is known from our previous work on enzymes that the presence of borate can dramatically enhance the protective ability of trehalose. In this work, the addition of trehalose-borate to bacterial concentrate greatly improves the recovery of viable cells after storage. This improvement was seen in freeze-dried samples stored at 37 degrees C as well as for vacuum-dried samples held at room temperature. A tailored buffering strategy was tested to counteract the high pH resulting from the addition of borate to the mixture. Use of citric or lactic acids in combination with ammonium hydroxide gave a protectant solution with high pH (resulting in effective crosslinking between trehalose and borate) but a dry product with reduced pH upon rehydration (conducive to cell survival). These results raise exciting possibilities for protection of more labile prokaryotic species as well as simple eukaryotes. PMID:11017757

  7. Wood preservative leachates from docks in an estuarine environment.

    PubMed

    Wendt, P H; Van Dolah, R F; Bobo, M Y; Mathews, T D; Levisen, M V

    1996-07-01

    Environmental concentrations and biological effects of certain metals and organic compounds found in wood preservatives were examined. The study focused on leachates from private residential docks in South Carolina tidal creeks. Copper, chromium, arsenic, and polynuclear aromatic hydrocarbons (PAHs) were measured in composite samples of surficial sediments and naturally occurring oyster populations (Crassostrea virginica) from creeks with high densities of docks, and from nearby reference creeks with no docks. In some cases, metal concentrations in sediments and oysters were higher immediately adjacent to dock pilings than they were elsewhere in the same creek. Sediments from most sites had concentrations of metals and total PAHs which were below levels reported to cause biological effects, however. Solid-phase Microtox(R) bioassays using whole sediments and rotifer bioassays using sediment pore water showed no significant differences in acute toxicity between creeks with and without docks. Oysters growing directly on dock pilings had significantly higher concentrations of copper than oysters growing at least 10 m away; however, there was no significant difference in the physiological condition of these oysters. Four-day field bioassays measuring percent survival of mummichogs (Fundulus heteroclitus), mud snails (Ilyanassa obsoleta), juvenile red drum (Sciaenops ocellatus), and juvenile white shrimp (Penaeus setiferus) showed no significant differences between sites near to and distant from newly constructed docks. Hatchery-reared oysters showed no significant differences between dock and reference sites in percent survival, growth, or bioaccumulation of metals after six weeks of exposure. The results suggest that, in estuarine environments with a moderate tidal range (1.5-2.0 m), wood preservative leachates from dock pilings have no acutely toxic effects on four common estuarine species, nor do they affect the short-term survival or growth of juvenile oysters. PMID:8687987

  8. Biodiversity as the Source of Biological Resources: A New Look at Biodiversity Values

    Microsoft Academic Search

    Paul M. Wood

    1997-01-01

    The value of biodiversity is usually confused with the value of biological resources, both actual and potential. A sharp distinction between biological resources and biodiversity offers a clearer insight into the value of biodiversity itself and therefore the need to preserve it. Biodiversity can be defined abstractly as the differences among biological entities. Using this definition, biodiversity can be seen

  9. BIOLOGY PROGRAMME ADVISORS BIOLOGY MAJOR

    E-print Network

    Gunawardena, Arunika

    5076B 494-1853 Bill.Pohajdak@dal.ca Jonathan Wright LSC 6087 494-6468 J.M.Wright@dal.ca MARINE BIOLOGYBIOLOGY PROGRAMME ADVISORS BIOLOGY MAJOR (20 credit or 15 credit concentration) Todd Bishop LSC.Welsh@dal.ca BIOLOGY CO-OP (Majors and Honours) Mindy McCarville LSC 7017 494-7072 Mindy.McCarville@dal.ca BIOLOGY

  10. Isolated total RNA and protein are preserved after thawing for more than twenty-four hours

    PubMed Central

    de Oliveira, Ivone Braga; Ramos, Débora Rothstein; Lopes, Karen Lucasechi; de Souza, Regiane Machado; Heimann, Joel Claudio; Furukawa, Luzia Naôko Shinohara

    2012-01-01

    OBJECTIVE: The preservation of biological samples at a low temperature is important for later biochemical and/or histological analyses. However, the molecular viability of thawed samples has not been studied sufficiently in depth. The present study was undertaken to evaluate the viability of intact tissues, tissue homogenates, and isolated total RNA after defrosting for more than twenty-four hours. METHODS: The molecular viability of the thawed samples (n?=?82) was assessed using the A260/A280 ratio, the RNA concentration, the RNA integrity, the level of intact mRNA determined by reverse transcriptase polymerase chain reaction, the protein level determined by Western blotting, and an examination of the histological structure. RESULTS: The integrity of the total RNA was not preserved in the thawed intact tissue, but the RNA integrity and level of mRNA were perfectly preserved in isolated defrosted samples of total RNA. Additionally, the level of ?-actin protein was preserved in both thawed intact tissue and homogenates. CONCLUSION: Isolated total RNA does not undergo degradation due to thawing for at least 24 hours, and it is recommended to isolate the total RNA as soon as possible after tissue collection. Moreover, the protein level is preserved in defrosted tissues. PMID:22473407

  11. Constrained Graph Optimization: Interdiction and Preservation Problems

    SciTech Connect

    Schild, Aaron V [Los Alamos National Laboratory

    2012-07-30

    The maximum flow, shortest path, and maximum matching problems are a set of basic graph problems that are critical in theoretical computer science and applications. Constrained graph optimization, a variation of these basic graph problems involving modification of the underlying graph, is equally important but sometimes significantly harder. In particular, one can explore these optimization problems with additional cost constraints. In the preservation case, the optimizer has a budget to preserve vertices or edges of a graph, preventing them from being deleted. The optimizer wants to find the best set of preserved edges/vertices in which the cost constraints are satisfied and the basic graph problems are optimized. For example, in shortest path preservation, the optimizer wants to find a set of edges/vertices within which the shortest path between two predetermined points is smallest. In interdiction problems, one deletes vertices or edges from the graph with a particular cost in order to impede the basic graph problems as much as possible (for example, delete edges/vertices to maximize the shortest path between two predetermined vertices). Applications of preservation problems include optimal road maintenance, power grid maintenance, and job scheduling, while interdiction problems are related to drug trafficking prevention, network stability assessment, and counterterrorism. Computational hardness results are presented, along with heuristic methods for approximating solutions to the matching interdiction problem. Also, efficient algorithms are presented for special cases of graphs, including on planar graphs. The graphs in many of the listed applications are planar, so these algorithms have important practical implications.

  12. Cancer and fertility: strategies to preserve fertility.

    PubMed

    Diedrich, K; Fauser, B C J M; Devroey, P

    2011-03-01

    Fertility preservation is a key component of cancer management in young people. The Fourth Evian Annual Reproduction Workshop Meeting was held in April 2009 to discuss cancer and fertility in young adults. Specialists in oncology, assisted reproduction, embryology and clinical genetics presented published data and ongoing research on cancer and fertility, with particular focus on strategies to preserve fertility. This report is based on the expert presentations and group discussions, supplemented with publications from literature searches and the authors' knowledge. Fertility preservation should be considered for all young people undergoing potentially gonadotoxic cancer treatment. A variety of options are required to facilitate safe and effective fertility preservation for individual patients. Sperm banking is a simple and low-cost intervention. Embryo cryopreservation is the only established method of female fertility preservation. Oocyte cryopreservation offers a useful option for women without a male partner. Emergency ovarian stimulation and cryopreservation of ovarian tissue (followed by tissue transplantation or in-vitro maturation of oocytes) are experimental techniques for women who require urgent cancer treatment. Further prospective studies are required to validate cryopreservation of oocytes and ovarian tissue, in-vitro maturation of oocytes and new vitrification techniques and to identify any long-term sequelae of slow freezing of embryos. PMID:21269884

  13. Preservation in American Public Libraries: A Contradiction in Terms?

    ERIC Educational Resources Information Center

    Tolbert, Susan L.

    1997-01-01

    Although preservation is typically considered a concern of academic and special libraries only, many inexpensive and cost-effective preservation methods exist that public librarians should implement. Discusses why and how public libraries should preserve and outlines preservation and disaster mitigation tips. Lists supplies for disaster…

  14. 29 CFR 1915.33 - Chemical paint and preservative removers.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Chemical paint and preservative removers. 1915.33...and Preservation § 1915.33 Chemical paint and preservative removers. (a) Employees...the handling and application of chemical paint and preservative removers and shall...

  15. Technical Bulletin Number 6 Aquaculture within Aquatic Preserves

    E-print Network

    Florida, University of

    Technical Bulletin Number 6 Aquaculture within Aquatic Preserves Revised January 4, 2011 Preserve Aquatic Preserves are home to aquaculture activities: Alligator Harbor, Big Bend Seagrasses, Terra Ceia this bulletin: Aquaculture & Aquatic Preserves ADAM H. PUTNAM COMMISSIONER OF AGRICULTURE Nineteen of Florida

  16. PRESERVATION OF CONVEXITY OF SOLUTIONS TO PARABOLIC EQUATIONS

    E-print Network

    Janson, Svante

    PRESERVATION OF CONVEXITY OF SOLUTIONS TO PARABOLIC EQUATIONS SVANTE JANSON AND JOHAN TYSK Abstract for convexity to be preserved. A parabolic equation is said to preserve convexity if given a convex initial is indeed preserved for solutions, given by the stochastic representation formula, to an equation

  17. PRESERVATION OF CONVEXITY OF SOLUTIONS TO PARABOLIC EQUATIONS

    E-print Network

    Janson, Svante

    PRESERVATION OF CONVEXITY OF SOLUTIONS TO PARABOLIC EQUATIONS SVANTE JANSON AND JOHAN TYSK Abstract for convexity to be preserved. A parabolic equation is said to preserve convexity if given a convex initial preserved for solutions, given by the stochastic representation formula, to an equation of the form Ft = a2

  18. Linear Preserver Problems Chi-Kwong Li and Stephen Pierce

    E-print Network

    Li, Chi-Kwong

    Linear Preserver Problems Chi-Kwong Li and Stephen Pierce Linear preserver problems is an active A Mn. (2) A linear operator satisfying (2) is called a linear preserver of the determinant func- tion or simply a determinant preserver. Since det(A) = det(At ), it follows that if det(M N) = 1, then the linear

  19. Convexity Preserving Jump Diffusion Models for Option Pricing

    E-print Network

    Sidorov, Nikita

    Convexity Preserving Jump Diffusion Models for Option Pricing Erik Ekstr¨om & Johan Tysk First of Mathematics, The University of Manchester #12;CONVEXITY PRESERVING JUMP DIFFUSION MODELS FOR OPTION PRICING preserving. The study of convexity preserving models is motivated by monotonicity results for such models

  20. Preserving P-points in definable forcing II Jindrich Zapletal

    E-print Network

    Zapletal, Jindrich

    Preserving P-points in definable forcing II Jindrich Zapletal University of Florida September 13, 2008 Abstract I will prove iteration and product preservation theorems related to P- point preservation, preservation of P-points is equivalent to the conjunction of two forcing properties: the weak Laver property

  1. 1 ON AREA PRESERVING MAPPINGS OF MINIMAL DISTORTION

    E-print Network

    Angenent, Sigurd

    1 ON AREA PRESERVING MAPPINGS OF MINIMAL DISTORTION S. Angenent y , Steven Haker*, Allen Tannenbaum locally preserves the geometry. We moreover discuss area preserving flattenings, and those which have minimal distortion in the sense of preserving angles. These results may be used for various purposes in 3D

  2. Biology Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1978

    1978-01-01

    Presents experiments, demonstrations, activities and ideas relating to various fields of biology to be used in biology courses in secondary schools. Among those experiments presented are demonstrating the early stages of ferns and mosses and simple culture methods for fern prothalli. (HM)

  3. Coregulation of Ion Channel Conductances Preserves Output in a Computational Model of a Crustacean Cardiac Motor Neuron

    PubMed Central

    Ball, John M.; Franklin, Clarence C.; Tobin, Anne-Elise

    2015-01-01

    Similar activity patterns at both neuron and network levels can arise from different combinations of membrane and synaptic conductance values. A strategy by which neurons may preserve their electrical output is via cell type-dependent balances of inward and outward currents. Measurements of mRNA transcripts that encode ion channel proteins within motor neurons in the crustacean cardiac ganglion recently revealed correlations between certain channel types. To determine whether balances of intrinsic currents potentially resulting from such correlations preserve certain electrical cell outputs, we developed a nominal biophysical model of the crustacean cardiac ganglion using biological data. Predictions from the nominal model showed that coregulation of ionic currents may preserve the key characteristics of motor neuron activity. We then developed a methodology of sampling a multidimensional parameter space to select an appropriate model set for meaningful comparison with variations in correlations seen in biological datasets. PMID:20573909

  4. Focus on Fertility Preservation Animal models for fertility preservation in the male

    Microsoft Academic Search

    Jens Ehmcke; Stefan Schlatt

    Fertility preservation in the male is routinely focused on sperm. In clinical and veterinary settings, cryopreservation of sperm is a widely used tool. However, the goals for male fertility preservation differ between experimental models, maintenance of livestock, conservation of rare species, and fertility protection in men. Therefore very different approaches exist, which are adapted to the specialized needs for each

  5. Closed Loop Recycling of PreservativeClosed Loop Recycling of Preservative Treated WoodTreated Wood

    E-print Network

    Closed Loop Recycling of PreservativeClosed Loop Recycling of Preservative Treated WoodTreated WoodDisposal problem Recycling potentialRecycling potential ValueValue--added productsadded products Closed loop recyclingClosed loop recycling #12;Major Current Disposal OptionsMajor Current Disposal Options Incineration

  6. Broadband phase-preserved optical elevator

    E-print Network

    Yuan Luo; Tiancheng Han; Baile Zhang; Cheng-Wei Qiu; George Barbastathis

    2011-09-30

    Phase-preserved optical elevator is an optical device to lift up an entire plane virtually without distortion in light path or phase. Using transformation optics, we have predicted and observed the realization of such a broadband phase-preserved optical elevator, made of a natural homogeneous birefringent crystal without resorting to absorptive and narrowband metamaterials involving time-consuming nano-fabrication. In our demonstration, the optical elevator is designed to lift a sheet upwards, and the phase is verified to be preserved always. The camouflage capability is also demonstrated in the presence of adjacent objects of the same scale at will. The elevating device functions in different surrounding media over the wavelength range of 400-700 nm. Our work opens up prospects for studies of light trapping, solar energy, illusion optics, communication, and imaging.

  7. Exceptionally Preserved Jellyfishes from the Middle Cambrian

    PubMed Central

    Cartwright, Paulyn; Halgedahl, Susan L.; Hendricks, Jonathan R.; Jarrard, Richard D.; Marques, Antonio C.; Collins, Allen G.; Lieberman, Bruce S.

    2007-01-01

    Cnidarians represent an early diverging animal group and thus insight into their origin and diversification is key to understanding metazoan evolution. Further, cnidarian jellyfish comprise an important component of modern marine planktonic ecosystems. Here we report on exceptionally preserved cnidarian jellyfish fossils from the Middle Cambrian (?505 million years old) Marjum Formation of Utah. These are the first described Cambrian jellyfish fossils to display exquisite preservation of soft part anatomy including detailed features of structures interpreted as trailing tentacles and subumbrellar and exumbrellar surfaces. If the interpretation of these preserved characters is correct, their presence is diagnostic of modern jellyfish taxa. These new discoveries may provide insight into the scope of cnidarian diversity shortly after the Cambrian radiation, and would reinforce the notion that important taxonomic components of the modern planktonic realm were in place by the Cambrian period. PMID:17971881

  8. Generic area-preserving reversible diffeomorphisms

    NASA Astrophysics Data System (ADS)

    Bessa, Mário; Carvalho, Maria; Rodrigues, Alexandre

    2015-06-01

    Let M be a surface and R?:?M ? M an area-preserving C? diffeomorphism which is an involution and whose set of fixed points is a submanifold with dimension one. We will prove that C1 - generically either an area-preserving R-reversible diffeomorphism, is Anosov, or, for ?-almost every x ? M, the Lyapunov exponents at x vanish or else the orbit of x belongs to a compact hyperbolic set with an empty interior. We will also describe a nonempty C1-open subset of area-preserving R-reversible diffeomorphisms where for C1 - generically each map is either Anosov or its Lyapunov exponents vanish from almost everywhere.

  9. Cryopreservation for preservation of potato genetic resources

    PubMed Central

    Niino, Takao; Arizaga, Miriam Valle

    2015-01-01

    Cryopreservation is becoming a very important tool for the long-term storage of plant genetic resources and efficient cryopreservation protocols have been developed for a large number of plant species. Practical procedures, developed using in vitro tissue culture, can be a simple and reliable preservation option of potato genetic resources rather than maintaining by vegetative propagation in genebanks due their allogamous nature. Cryopreserved materials insure a long-term backup of field collections against loss of plant germplasm. Occurrence of genetic variation, in tissue culture cells during prolonged subcultures, can be avoided with suitable cryopreservation protocols that provide high regrowth, leading and facilitating a systematic and strategic cryo-banking of plant genetic resources. Cryopreservation protocols for potato reviewed here, can efficiently complement field and in vitro conservation, providing for preservation of genotypes difficult to preserve by other methods, wild types and other species decided as priority collections. PMID:25931979

  10. Organ preservation surgery for laryngeal cancer

    PubMed Central

    Chawla, Sharad; Carney, Andrew Simon

    2009-01-01

    The principles of management of the laryngeal cancer have evolved over the recent past with emphasis on organ preservation. These developments have paralleled technological advancements as well as refinement in the surgical technique. The surgeons are able to maintain physiological functions of larynx namely speech, respiration and swallowing without compromising the loco-regional control of cancer in comparison to the more radical treatment modalities. A large number of organ preservation surgeries are available to the surgeon; however, careful assessment of the stage of the cancer and selection of the patient is paramount to a successful outcome. A comprehensive review of various organ preservation techniques in vogue for the management of laryngeal cancer is presented. PMID:19442314

  11. The current status of splenic preservation.

    PubMed

    Pachter, H L; Grau, J

    2000-01-01

    The recognition of the fundamental role of the spleen in the immune response has led to greater efforts to preserve the spleen after injury. Whenever possible, splenic preservation is the preferred treatment modality for both blunt and penetrating injuries. The past 2 decades have seen an evolution in the way this goal is accomplished. Operative splenic preservation achieved by splenorrhaphy as the most prevalent method for the management of splenic trauma has progressed to the nonoperative management of these injuries. The factor most responsible for bringing about this change has been the development of more sophisticated and accurate imaging techniques in the evaluation of these patients. Splenectomy should be avoided whenever possible, as the procedure continues to be associated with excessive transfusion requirements and increased postoperative sepsis rates. PMID:10997218

  12. Exceptionally preserved jellyfishes from the Middle Cambrian.

    PubMed

    Cartwright, Paulyn; Halgedahl, Susan L; Hendricks, Jonathan R; Jarrard, Richard D; Marques, Antonio C; Collins, Allen G; Lieberman, Bruce S

    2007-01-01

    Cnidarians represent an early diverging animal group and thus insight into their origin and diversification is key to understanding metazoan evolution. Further, cnidarian jellyfish comprise an important component of modern marine planktonic ecosystems. Here we report on exceptionally preserved cnidarian jellyfish fossils from the Middle Cambrian (approximately 505 million years old) Marjum Formation of Utah. These are the first described Cambrian jellyfish fossils to display exquisite preservation of soft part anatomy including detailed features of structures interpreted as trailing tentacles and subumbrellar and exumbrellar surfaces. If the interpretation of these preserved characters is correct, their presence is diagnostic of modern jellyfish taxa. These new discoveries may provide insight into the scope of cnidarian diversity shortly after the Cambrian radiation, and would reinforce the notion that important taxonomic components of the modern planktonic realm were in place by the Cambrian period. PMID:17971881

  13. Structure-Preserving Sparsification of Social Networks

    E-print Network

    Lindner, Gerd; Hamann, Michael; Meyerhenke, Henning; Wagner, Dorothea

    2015-01-01

    Sparsification reduces the size of networks while preserving structural and statistical properties of interest. Various sparsifying algorithms have been proposed in different contexts. We contribute the first systematic conceptual and experimental comparison of \\textit{edge sparsification} methods on a diverse set of network properties. It is shown that they can be understood as methods for rating edges by importance and then filtering globally by these scores. In addition, we propose a new sparsification method (\\textit{Local Degree}) which preserves edges leading to local hub nodes. All methods are evaluated on a set of 100 Facebook social networks with respect to network properties including diameter, connected components, community structure, and multiple node centrality measures. Experiments with our implementations of the sparsification methods (using the open-source network analysis tool suite NetworKit) show that many network properties can be preserved down to about 20\\% of the original set of edges....

  14. Geology Fieldnotes: Ice Age National Scientific Preserve

    NSDL National Science Digital Library

    This National Park Service (NPS) site gives information on the Ice Age National Scientific Preserve in Wisconsin, including geology, park maps, a photo album, and other media (books, videos, CDs). There is also a selection of links to other geologic and conservation organizations, and to information for visitors. This preserve contains a wealth of glacial features associated with the most recent Pleistocene continental glaciation including drumlins, kames, kettles, moraines, erratics, and eskers. It also contains a segment of the Ice Age National Scenic Trail, a 1000-plus mile hiking and backpacking trail that passes through this unique glacial landscape.

  15. Privacy-preserving restricted boltzmann machine.

    PubMed

    Li, Yu; Zhang, Yuan; Ji, Yue

    2014-01-01

    With the arrival of the big data era, it is predicted that distributed data mining will lead to an information technology revolution. To motivate different institutes to collaborate with each other, the crucial issue is to eliminate their concerns regarding data privacy. In this paper, we propose a privacy-preserving method for training a restricted boltzmann machine (RBM). The RBM can be got without revealing their private data to each other when using our privacy-preserving method. We provide a correctness and efficiency analysis of our algorithms. The comparative experiment shows that the accuracy is very close to the original RBM model. PMID:25101139

  16. Privacy-Preserving Restricted Boltzmann Machine

    PubMed Central

    Li, Yu

    2014-01-01

    With the arrival of the big data era, it is predicted that distributed data mining will lead to an information technology revolution. To motivate different institutes to collaborate with each other, the crucial issue is to eliminate their concerns regarding data privacy. In this paper, we propose a privacy-preserving method for training a restricted boltzmann machine (RBM). The RBM can be got without revealing their private data to each other when using our privacy-preserving method. We provide a correctness and efficiency analysis of our algorithms. The comparative experiment shows that the accuracy is very close to the original RBM model. PMID:25101139

  17. Avian artificial insemination and semen preservation

    USGS Publications Warehouse

    Gee, G.F.

    1983-01-01

    Summary: Artificial insemination is a practical propagation tool that has been successful with a variety of birds. Cooperative, massage, and electroejaculation and modifications of these three basic methods of semen collection are described for a variety of birds. Semen color and consistency and sperm number, moti!ity, and morphology, as discussed, are useful indicators of semen quality, but the most reliable test of semen quality is the production of fertile eggs. Successful cryogenic preservation of avian semen with DMSO or glycerol as the cryoprotectant has been possible. Although the methods for preservation require special equipment, use of frozen semen requires only simple insemination supplies

  18. [Hearing preservation: Better hearing with advanced technology].

    PubMed

    Rader, T; Helbig, S; Stöver, T; Baumann, U

    2014-05-01

    Preservation of residual hearing after cochlear implantation allows patients the synergetic use of electric and acoustic stimulation (EAS). The application of specific surgical and therapeutic techniques enables the reduction of inner ear trauma, which leads otherwise to complete hearing loss. Due to simultaneous electric and acoustic stimulation, speech understanding is improved especially in noise. EAS is a well-accepted therapeutic treatment for subjects with profound hearing loss in the higher frequencies and no or mild hearing loss in the low frequencies. Several Manufacturers offer individual soft electrodes specially designed for hearing preservation as well as combined electric-acoustic audio processors. PMID:24782208

  19. Data Preservation in High Energy Physics

    E-print Network

    Dphep Study Group

    2009-12-01

    Data from high-energy physics (HEP) experiments are collected with significant financial and human effort and are mostly unique. At the same time, HEP has no coherent strategy for data preservation and re-use. An inter-experimental Study Group on HEP data preservation and long-term analysis was convened at the end of 2008 and held two workshops, at DESY (January 2009) and SLAC (May 2009). This document is an intermediate report to the International Committee for Future Accelerators (ICFA) of the reflections of this Study Group.

  20. Eigenphase preserving two-channel SUSY transformations

    E-print Network

    Andrey M Pupasov; Boris F Samsonov; Jean-Marc Sparenberg; Daniel Baye

    2010-01-19

    We propose a new kind of supersymmetric (SUSY) transformation in the case of the two-channel scattering problem with equal thresholds, for partial waves of the same parity. This two-fold transformation is based on two imaginary factorization energies with opposite signs and with mutually conjugated factorization solutions. We call it an eigenphase preserving SUSY transformation as it relates two Hamiltonians, the scattering matrices of which have identical eigenphase shifts. In contrast to known phase-equivalent transformations, the mixing parameter is modified by the eigenphase preserving transformation.

  1. Quantum Biology

    E-print Network

    Alessandro Sergi

    2009-07-11

    A critical assessment of the recent developments of molecular biology is presented. The thesis that they do not lead to a conceptual understanding of life and biological systems is defended. Maturana and Varela's concept of autopoiesis is briefly sketched and its logical circularity avoided by postulating the existence of underlying {\\it living processes}, entailing amplification from the microscopic to the macroscopic scale, with increasing complexity in the passage from one scale to the other. Following such a line of thought, the currently accepted model of condensed matter, which is based on electrostatics and short-ranged forces, is criticized. It is suggested that the correct interpretation of quantum dispersion forces (van der Waals, hydrogen bonding, and so on) as quantum coherence effects hints at the necessity of including long-ranged forces (or mechanisms for them) in condensed matter theories of biological processes. Some quantum effects in biology are reviewed and quantum mechanics is acknowledged as conceptually important to biology since without it most (if not all) of the biological structures and signalling processes would not even exist. Moreover, it is suggested that long-range quantum coherent dynamics, including electron polarization, may be invoked to explain signal amplification process in biological systems in general.

  2. HANDLING ARABIDOPSIS PLANTS AND SEEDS Methods used by the Arabidopsis Biological Resource Center

    E-print Network

    Meier, Iris

    HANDLING ARABIDOPSIS PLANTS AND SEEDS Methods used by the Arabidopsis Biological Resource Center · Growth conditions · Control of pests · Plant isolation and harvesting SEED HANDLING AND PRESERVATION Threshing Seed drying Seed moisture content determination Seed packaging for storage Seed storage

  3. More than Ten Years After: Identity and Direction in Library Preservation.

    ERIC Educational Resources Information Center

    Jones, Maralyn

    1991-01-01

    Reviews the literature of preservation for 1990. Topics addressed include preservation in original format; conservation treatment; pest management; deterioration of paper, deacidification, and paper strengthening; preservation replacement; newer reformatting technologies; the management of preservation programs; education for preservation

  4. Computational Biology

    NSDL National Science Digital Library

    William S. Barnes

    Basic Chemistry and Molecular Biology; Introduction to Genomics. Data Mining (NCBI Bookshelf, OMIM, PubMed, NCBI databases). Introductions to Sequence similarity searches and BLAST, Multiple Alignments and Phylogenetic Analysis, Protein Structure databases and 3D viewers.

  5. Phase Preserving Denoising of Images Peter Kovesi

    E-print Network

    Kovesi, Peter

    the statistics of the wavelet responses to the image. 1. Introduction Denoising of images is typically donePhase Preserving Denoising of Images Peter Kovesi Department of Computer Science The University denoising has become the method of choice for the denoising of images. However, despite much research

  6. Books and Bytes: Preserving Documents for Posterity.

    ERIC Educational Resources Information Center

    Larsen, Poul Steen

    1999-01-01

    Describes some of the problems in documentation work rising from the habit of detaching information from any physical support, as a prevailing notion in an electronic environment. Points to the necessity of regarding information as something closely connected with preservation. Suggests a clearer distinction in information science between…

  7. Hearing Preservation after Cochlear Implantation: UNICAMP Outcomes.

    PubMed

    de Carvalho, Guilherme Machado; Guimaraes, Alexandre C; Duarte, Alexandre S M; Muranaka, Eder B; Soki, Marcelo N; Martins, Renata S Zanotello; Bianchini, Walter A; Paschoal, Jorge R; Castilho, Arthur M

    2013-01-01

    Background. Electric-acoustic stimulation (EAS) is an excellent choice for people with residual hearing in low frequencies but not high frequencies and who derive insufficient benefit from hearing aids. For EAS to be effective, subjects' residual hearing must be preserved during cochlear implant (CI) surgery. Methods. We implanted 6 subjects with a CI. We used a special surgical technique and an electrode designed to be atraumatic. Subjects' rates of residual hearing preservation were measured 3 times postoperatively, lastly after at least a year of implant experience. Subjects' aided speech perception was tested pre- and postoperatively with a sentence test in quiet. Subjects' subjective responses assessed after a year of EAS or CI experience. Results. 4 subjects had total or partial residual hearing preservation; 2 subjects had total residual hearing loss. All subjects' hearing and speech perception benefited from cochlear implantation. CI diminished or eliminated tinnitus in all 4 subjects who had it preoperatively. 5 subjects reported great satisfaction with their new device. Conclusions. When we have more experience with our surgical technique we are confident we will be able to report increased rates of residual hearing preservation. Hopefully, our study will raise the profile of EAS in Brazil and Latin/South America. PMID:23573094

  8. Privacy preserving schema and data matching

    Microsoft Academic Search

    Monica Scannapieco; Ilya Figotin; Elisa Bertino; Ahmed K. Elmagarmid

    2007-01-01

    In many business scenarios, record matching is performed across different data sources with the aim of identifying com- mon information shared among these sources. However such need is often in contrast with privacy requirements concern- ing the data stored by the sources. In this paper, we propose a protocol for record matching that preserves privacy both at the data level

  9. Privacy-Preserving Location-Based Services

    ERIC Educational Resources Information Center

    Chow, Chi Yin

    2010-01-01

    Location-based services (LBS for short) providers require users' current locations to answer their location-based queries, e.g., range and nearest-neighbor queries. Revealing personal location information to potentially untrusted service providers could create privacy risks for users. To this end, our objective is to design a privacy-preserving

  10. Planning for Preservation during Mass Digitization Projects

    ERIC Educational Resources Information Center

    Teper, Jennifer Hain; Shaw, Emily F.

    2011-01-01

    In anticipation of current and future mass digitization projects in which the University of Illinois at Urbana-Champaign's Library will participate, the Library's Conservation Unit began to gather data on the "scannability" of our general book collections to anticipate potential effects on conservation and preservation work flows. The findings…

  11. Contact sensitivity to preservatives in Turkey.

    PubMed

    Boyvat, Ayse; Akyol, Aynur; Gürgey, Erbak

    2005-06-01

    This study was designed to evaluate the frequency of contact sensitivity to 14 common preservatives among patients with contact dermatitis in Turkey. From 2000 to 2004, 308 patients with the diagnosis of contact dermatitis were patch tested in the Department of Dermatology, Ankara University School of Medicine. All patients were patch tested with European standard series. In addition to the four preservatives included in the standard series, patients were also tested with DMDM hydantoin, imidazolidinyl urea, bromonitropropane diol, diazolidinyl urea, thimerosal, propylene glycol, chlorocresol, chloroxylenol, methyldibromoglutaronitrile/phenoxyethanol (MDBGN/PE) and benzalkonium chloride. Out of the 308 patients suspected of having contact dermatitis, 23 patients were found to have positive reactions to one or more preservatives. Preservatives that were the most frequent cause of positive reactions were thimerosal (1.6%), benzalkonium chloride (1.6%), formaldehyde (1.3%) and MDBGN/PE (0.9%). In our study, 65% of the positive reactions were caused by allergens not present in the standard series, such as thimerosal, benzalkonium chloride and MDBGN/PE. Although thimerosal caused a high rate of contact sensitivity, it may not be considered as an important allergen, because clinical relevance could not be found in any of the patients. PMID:15932584

  12. WoodChemistry Wood Degradation & Preservation

    E-print Network

    Geldenhuys, Jaco

    31 WoodChemistry Wood Degradation & Preservation Chemical Utilization of Wood Pulp & Paper. Lignin carbohydrate complexes in biomaterials The existence of covalent bonds between lignin, such as the reactions taking place during the formation of wood, the natural molecular weight distribution of lignin

  13. Estimation of daily intake of food preservatives

    Microsoft Academic Search

    R. C. Massey

    1997-01-01

    The techniques that are available for estimating the intake of food preservatives are reviewed. These include per-capita, duplicate diet, diary records, food frequency, Total Diet and biomarker-based methods. Each approach has its merits and disadvantages and selection will depend upon a number of factors such as the reasons why the intake information is required, resource availability and the nature and

  14. Use of ionising radiation for food preservation

    Microsoft Academic Search

    Basson

    1970-01-01

    The physical principles of the use of ionizing radiation for the ; preservation of food are described, taking into consideration the widely ; available radioactive sources as well as the necessary control measures for ; ensuring wholesomeness. Complete sterilization is limited by the resulting off-; flavors and odors, but pasteurization as well as deinfestation of insects appear ; as useful

  15. Hearing Preservation in Cochlear Implant Surgery

    PubMed Central

    Sampaio, André Luiz Lopes; Lopes, Rafaela Aquino Fernandes; Ramos Venosa, Alessandra; de Oliveira, Carlos Augusto Costa Pires

    2014-01-01

    In the past, it was thought that hearing loss patients with residual low-frequency hearing would not be good candidates for cochlear implantation since insertion was expected to induce inner ear trauma. Recent advances in electrode design and surgical techniques have made the preservation of residual low-frequency hearing achievable and desirable. The importance of preserving residual low-frequency hearing cannot be underestimated in light of the added benefit of hearing in noisy atmospheres and in music quality. The concept of electrical and acoustic stimulation involves electrically stimulating the nonfunctional, high-frequency region of the cochlea with a cochlear implant and applying a hearing aid in the low-frequency range. The principle of preserving low-frequency hearing by a “soft surgery” cochlear implantation could also be useful to the population of children who might profit from regenerative hair cell therapy in the future. Main aspects of low-frequency hearing preservation surgery are discussed in this review: its brief history, electrode design, principles and advantages of electric-acoustic stimulation, surgical technique, and further implications of this new treatment possibility for hearing impaired patients. PMID:25276136

  16. Doushantuo embryos preserved inside diapause egg cysts

    Microsoft Academic Search

    Leiming Yin; Maoyan Zhu; Andrew H. Knoll; Xunlai Yuan; Junming Zhang; Jie Hu

    2007-01-01

    Phosphatized microfossils in the Ediacaran (635-542 Myr ago) Doushantuo Formation, south China, have been interpreted as the embryos of early animals. Despite experimental demonstration that embryos can be preserved, microstructural evidence that the Doushantuo remains are embryonic and an unambiguous record of fossil embryos in Lower Cambrian rocks, questions about the phylogenetic relationships of these fossils remain. Most recently, some

  17. Petroleum-base washing and preservative fluid

    Microsoft Academic Search

    T. I. Belova; E. S. Churshukov; L. P. Maiko; N. N. Zakharova

    1984-01-01

    This article reports on an investigation of the feasibility of formulating a wash\\/preservative fluid from commercial materials already produced in the USSR. Technological advances in the production and maintenance of vehicles, machinery, and mechanisms have raised the quality requirements of materials used to remove contaminants from machine parts in the course of manufacture and service and to protect the parts

  18. Petroleum-base washing and preservative fluid

    SciTech Connect

    Belova, T.I.; Churshukov, E.S.; Maiko, L.P.; Zakharova, N.N.

    1984-01-01

    This article reports on an investigation of the feasibility of formulating a wash/preservative fluid from commercial materials already produced in the USSR. Technological advances in the production and maintenance of vehicles, machinery, and mechanisms have raised the quality requirements of materials used to remove contaminants from machine parts in the course of manufacture and service and to protect the parts from atmospheric corrosion between operations. It is determined that it is impossible to formulate a fluid with the required level of detergency, waterdisplacing properties, and protective properties by diluting commercial preservative materials with organic solvents. A wash/preservative fluid is proposed which is composed of an alkenylsuccinic acid (KAP-25) corrosion inhibitor and an alkenylsuccinimide of urea (SIU) additive. Joint use of these inhibitors gives a synergistic effect in the protective properties, the maximum of which in organic solvents is reached at a 1:1 ratio. A comparison of the proposed wash/preservative fluid with an analogous non-USSR formulation showed that the two fluids have equivalent capabilities for removing organic contaminants from metal surfaces. It is concluded that the developed fluid can be used in the washing and interoperational protection of highprecision parts, or mechanisms with enclosed sections and pairs.

  19. Advancement Policy Facilities Naming and Historical Preservation

    E-print Network

    Advancement Policy Facilities Naming and Historical Preservation It is usual for facilities at colleges and universities in the United States to be named after individuals or organizations who have be made for substantial changes to named facilities or complete demolition, which may entail a change

  20. Sustainability: Preserving Choice for the Army

    E-print Network

    Hall, Sharon J.

    Sustainability: Preserving Choice for the Army Friday, October 19, 2012 12:00 - 1:30 p.m. (lunch will be provided) Wrigley Hall, Room 481 Richard Kidd Deputy Assistant of the Army, Energy and Sustainability The Army's ability to accomplish its global mission depends on secure, uninterrupted access to power

  1. Valuing Beach Renourishment: Is it Preservation?

    Microsoft Academic Search

    Rebecca P. Judge; Laura Osborne; Kerry Smith

    1995-01-01

    A proposed plan to preserve beach and beach access along the Cape Hatteras National Seashore thorugh beach re-nourishment offers the opportunity to apply contingent valuation techniques to explore the implications of three sources of preference heterogeneity for measures of people's willingness to pay. Preferences are modeled as functions of: (a) attitudes, socio-economic and demographic characteristics; (b) past experience with the

  2. Today's Trend in Forest Preserve Management

    ERIC Educational Resources Information Center

    Shearer, Thomas D.; Coggeshall, Almy D.

    1978-01-01

    A description is presented of the "Unit Management Plan" for the Adirondak Forest Preserve which involves inventorying the resources of this well-defined unit of land and defining goals and objectives for which management schedules and criteria are established and met. (MDR)

  3. Why We Should Preserve the Manhattan Project

    Microsoft Academic Search

    Richard Rhodes

    2007-01-01

    For all the buildings and artifacts that we preserve, thousands are lost forever. In this special Bulletin essay, Pulitzer Prize-winner Richard Rhodes examines the value of protecting the physical legacy of the U.S. nuclear enterprise and what its loss would tell us about ourselves.

  4. Dry Preserving the Green Sea Urchin.

    ERIC Educational Resources Information Center

    Stimson, Cheryl D.

    1987-01-01

    Describes a project for junior high and senior high school students designed to safely preserve hard-bodied marine invertebrates. Details the materials and procedures used in this technique. Stresses the use of non-toxic solutions and producing a lifelike specimen. (CW)

  5. Knowledge Preservation and Web-tools

    NASA Technical Reports Server (NTRS)

    Moreman, Douglas; Dyer, John; Ahmad, Rashed

    1998-01-01

    We propose a library of "netbooks" as part of a national effort, preserving the wisdom of the early Space Program. NASA is losing its rocket scientists who designed the great systems of the past. Few new systems of similar ambition are being built; much of the expertise that took us to the Moon is evaporating. With retiring NASA designers, we work to preserve something of the expertise of these individuals, developed at great national cost. We show others the tools that make preservation easy and cheap. Retiring engineers and scientists can be coached into speaking (without charge) into recording devices about ideas not widely appreciated but of potential future value. Transcripts of the recordings and the audio itself are combined (cheaply) in netbooks accessible via a standard web-browser (free). Selected netbooks are indexed into a rapidly searchable system, an electronic Library. We recruit support in establishing a standards committee for that Library. The system is to be a model for access by the blind as well as for preservation of important, technical knowledge.

  6. Topology-Preserving Smoothing of Vector Fields

    Microsoft Academic Search

    Rüdiger Westermann; Christopher Johnson; Thomas Ertl

    2001-01-01

    In this paper we propose a technique for topology preserving smoothing of sampled vector fields. The vector field data is first converted into a scalar representation in which time surfaces im- plicitly exist as level-sets. We then locally analyze the dynamic behavior of level-sets by placing geometric primitives in the scalar field and by subsequently distorting these primitives with respect

  7. Exceptionally Preserved Jellyfishes from the Middle Cambrian

    Microsoft Academic Search

    Paulyn Cartwright; Susan L. Halgedahl; Jonathan R. Hendricks; Richard D. Jarrard; Antonio C. Marques; Allen G. Collins; Bruce S. Lieberman; Stuart Humphries

    2007-01-01

    Cnidarians represent an early diverging animal group and thus insight into their origin and diversification is key to understanding metazoan evolution. Further, cnidarian jellyfish comprise an important component of modern marine planktonic ecosystems. Here we report on exceptionally preserved cnidarian jellyfish fossils from the Middle Cambrian (?505 million years old) Marjum Formation of Utah. These are the first described Cambrian

  8. An automatic volume control for preserving intelligibility

    Microsoft Academic Search

    Franklin Felber

    2011-01-01

    A new method has been developed to adjust volume automatically on all audio devices equipped with at least one microphone, including mobile phones, personal media players, headsets, and car radios, that might be used in noisy environments, such as crowds, cars, and outdoors. The method uses a patented set of algorithms, implemented on the chips in such devices, to preserve

  9. Type-preserving compilation of featherweight java

    Microsoft Academic Search

    Zhong Shao; Valery Trifonov

    2003-01-01

    We present an efficient encoding of core Java constructs in a simple, implementable typed intermediate language. The encoding, after type erasure, has the same operational behavior as a standard implementation using vtables and self-application for method invocation. Classes inherit super-class methods with no overhead. We support mutually recursive classes while preserving separate compilation. Our strategy extends naturally to a significant

  10. Type-Preserving Compilation of Featherweight Java

    Microsoft Academic Search

    Valery Trifonov

    2001-01-01

    We present an efficient encoding of core Java constructs in a simple, implementable typed intermediate language. The encoding, after type erasure, has the same operational be- havior as a standard implementation using vtables and self- application for method invocation. Classes inherit super-class methods with no overhead. We support mutually recursive classes while preserving separate compilation. Our strategy extends naturally to

  11. Type-preserving compilation of Featherweight Java

    Microsoft Academic Search

    Christopher League; Valery Trifonov

    2002-01-01

    We present an efficient encoding of core Java constructs in a simple, implementable typed intermediate language. The encoding, after type erasure, has the same operational behavior as a standard implementation using vtables and self-application for method invocation. Classes inherit super-class methods with no overhead. We support mutually recursive classes while preserving separate compilation. Our strategy extends naturally to a significant

  12. Maya Traditional Knowledge: Preserving Forests in Guatemala.

    ERIC Educational Resources Information Center

    Bernstein, Jacob

    1996-01-01

    In the mountains of western Guatemala, Maya K'iche communities draw on extensive indigenous knowledge of the local ecosystem to manage sections of forest allocated as community responsibility for generations. Supported by spiritual beliefs, community elders seek to guide the use and preservation of the forest despite illegal loggers, corrupt…

  13. Endothelium Preserving Microwave Treatment for Atherosclerosis

    NASA Technical Reports Server (NTRS)

    Fink, Patrick; Arndt, G. D.; Ngo, Phong

    2003-01-01

    This slide presentation reviews the use of microwave technology for treating Atherosclerosis while preserving the endothelium. The system uses catheter antennas as part of the system that is intended to treat atherosclerosis. The concept is to use a microwave catheter for heating the atherosclerotic lesions, and reduce constriction in the artery.

  14. Preserving the pyramid of STI using buckets

    Microsoft Academic Search

    Michael L. Nelson; Kurt Maly

    2000-01-01

    Considers a formal publication to represent an abstract to a larger body of work: a pvramid of scientific and technical information (STI). While this abstract may be sufficient for some applications, an in-depth use or analysis is likely to require the supporting layers from the pyramid. Describes how “buckets” have been developed to preserve this pyramid of STI. Buckets provide

  15. Collecting and preserving chalcid wasps (Hymenoptera: Chalcidoidea)

    Microsoft Academic Search

    John S. Noyes

    1982-01-01

    The most profitable ways of collecting chalcids are discussed, namely by sweeping, suction sampler, beating, pyrethrum spray, rearing, Malaise traps, yellow pan traps, suction traps, pitfall traps and extraction from leaf litter or grass tussocks. Methods of preserving chalcids are also outlined, with particular emphasis on storing all unmounted material dry rather than in alcohol. The techniques of sweeping, card

  16. Semen Quality in Relation to Semen Preservation

    Microsoft Academic Search

    R. G. Saacke

    1983-01-01

    A goal of research in laboratory eval- uation of semen has been ultimately to predict the fertility achievable with use of that semen. This would permit evaluation of the male and ejaculate. For artificial insemination, semen viability becomes a measure of man's interaction with that semen in an effort to preserve its func- tional life. Man's efficiency in developing successful

  17. BIOREMEDIATION AT WOOD-PRESERVING SITES

    EPA Science Inventory

    The removal of organic compounds from ground water during bioremediation at wood-preserving sites is a function of the stoichiometric demand for electron acceptors (oxygen, nitrate, and sulfate) to metabolize the organic contaminants and the supply of the electron acceptors in th...

  18. Preserving the 'Athens of Indiana' through Digitization.

    ERIC Educational Resources Information Center

    Helling, Bill

    2003-01-01

    Describes a digitization project at the public library in Crawfordsville, Indiana that was designed to preserve their local history collection. Highlights include damage to the collection from fire, termites, use, and age; selecting a scanner and software; creating databases; and making information accessible on the Web. (LRW)

  19. Preservation For and By the People

    ERIC Educational Resources Information Center

    Rimberg, June

    1973-01-01

    The American the Beautiful Fund (ABF) has for the past eight years been supporting imaginative urban design, the preservation of green spaces, and the protection of the character of small towns and vanishing Americana through staff assistance and modest seed grants. (JA)

  20. Matching Preservation Decisions with Collection Development Policy.

    ERIC Educational Resources Information Center

    Khislovskaya, Galina

    Based on communication with librarians from Russia, Mongolia, the Baltic States, Bulgaria, Slovenia, the Czech Republic, and Romania, this paper discusses library collection development and preservation policies. Highlights include: mission statements of national and regional libraries; availability of a formal structure responsible for collection…

  1. Digitizing, Coding, Annotating, Disseminating, and Preserving Documents

    E-print Network

    Nagy, George

    Digitizing, Coding, Annotating, Disseminating, and Preserving Documents George Nagy ECSE Doc-contrast, tightly-set documents because the conversion of documents to coded (searchable) form is lagging far behind conversion to image formats. At the same time, the prevalence of im- aged documents over coded documents

  2. Fossil avian eggshell preserves ancient DNA

    PubMed Central

    Oskam, Charlotte L.; Haile, James; McLay, Emma; Rigby, Paul; Allentoft, Morten E.; Olsen, Maia E.; Bengtsson, Camilla; Miller, Gifford H.; Schwenninger, Jean-Luc; Jacomb, Chris; Walter, Richard; Baynes, Alexander; Dortch, Joe; Parker-Pearson, Michael; Gilbert, M. Thomas P.; Holdaway, Richard N.; Willerslev, Eske; Bunce, Michael

    2010-01-01

    Owing to exceptional biomolecule preservation, fossil avian eggshell has been used extensively in geochronology and palaeodietary studies. Here, we show, to our knowledge, for the first time that fossil eggshell is a previously unrecognized source of ancient DNA (aDNA). We describe the successful isolation and amplification of DNA from fossil eggshell up to 19 ka old. aDNA was successfully characterized from eggshell obtained from New Zealand (extinct moa and ducks), Madagascar (extinct elephant birds) and Australia (emu and owl). Our data demonstrate excellent preservation of the nucleic acids, evidenced by retrieval of both mitochondrial and nuclear DNA from many of the samples. Using confocal microscopy and quantitative PCR, this study critically evaluates approaches to maximize DNA recovery from powdered eggshell. Our quantitative PCR experiments also demonstrate that moa eggshell has approximately 125 times lower bacterial load than bone, making it a highly suitable substrate for high-throughput sequencing approaches. Importantly, the preservation of DNA in Pleistocene eggshell from Australia and Holocene deposits from Madagascar indicates that eggshell is an excellent substrate for the long-term preservation of DNA in warmer climates. The successful recovery of DNA from this substrate has implications in a number of scientific disciplines; most notably archaeology and palaeontology, where genotypes and/or DNA-based species identifications can add significantly to our understanding of diets, environments, past biodiversity and evolutionary processes. PMID:20219731

  3. ORIGINAL PAPER Peer Disagreement and Independence Preservation

    E-print Network

    Wagner, Carl

    ORIGINAL PAPER Peer Disagreement and Independence Preservation Carl G. Wagner Received: 27 April equal weight to the opinion of a peer and to one's own opinion. As Kelly (2005) has C. G. Wagner (&) Department of Mathematics, The University of Tennessee, Knoxville, TN 37996, USA e-mail: wagner

  4. Model for the New Millennium: Preserving Community.

    ERIC Educational Resources Information Center

    Rezmierski, Virginia E.

    1999-01-01

    Addresses issues surrounding higher education and community building in the context of the effect on human behavior of the information technology revolution. Suggests the need for a new model which will seek to preserve a community that is open, just, disciplined, and caring by refocusing on mission, resisting change for its own sake,…

  5. The Newspaper Preservation Act: A Retrospective Analysis.

    ERIC Educational Resources Information Center

    Barwis, Gail Lund

    1980-01-01

    Charges that the Newspaper Preservation Act has allowed unnatural monopolistic practices to exist where the free marketplace might otherwise operate, has failed to truly save failing newspapers, and has opened the way for non-failing newspapers to gain special antitrust exemptions. Calls for a reassessment of policy. (RL)

  6. The H1 Data Preservation Project

    E-print Network

    South, David M

    2012-01-01

    The H1 data preservation project was started in 2009 as part of the global data preservation initiative in high-energy physics, DPHEP. In order to retain the full potential for future improvements, the H1 Collaboration aims for level 4 of the DPHEP recommendations, which requires the full simulation and reconstruction chain as well as the data to be preserved for future analysis. A major goal of the H1 project is therefore to provide secure, long-lived and validated access to the H1 data and analysis software, which is realised in collaboration with DESY-IT using virtualisation techniques. By implementing such a system, it is hoped that the lifetime of the unique ep collision data from HERA will be extended, providing the possibility for novel analysis in the future. The preservation of the data and software is performed alongside a consolidation programme of digital and non-digital documentation, some of which dates back to the early 1980s. A new organisational model of the H1 Collaboration, reflecting the c...

  7. Cardioplegia and myocardial preservation during cardiopulmonary bypass.

    PubMed

    Engelman, R M; Levitsky, S; O'Donoghue, M J; Auvil, J

    1978-09-01

    A standard experimental protocol was developed to explore the role of hypothermia and potassium cardioplegia in myocardial preservation during 120 minutes of ischemic arrest followed by 30 minutes of reperfusion. Seven different experimental groups of six animals each were evaluated using an in-vivo pig heart preparation. Hypothermic arrest without cardioplegia and cardioplegic arrest at normothermia were each compared to hypothermic cardioplegia. In addition, the use of an asanguineous hypothermic coronary perfusate without cardioplegia was compared to both multidose cardioplegia and single-dose cardioplegia followed by the same asanguineous perfusate. The parameters measured included: myocardial contractility and compliance, myocardial blood flow, endocardial/epicardial blood flow ratio, and electron microscopic studies. Myocardial preservation was inadequate with hypothermic arrest alone (without cardioplegia; and with cardioplegia at normothermia. In both experimental groups, myocardial contractility and compliance were so depressed that the) could not be accurately measured following ischemia and reperfusion while coronary blood flow remained significantly elevated. Preservation was improved but still inadequate following myocardial washout with a normokalemic or hypokalemic perfusate and following single dose cardioplegia plus myocardial washout. In the latter four groups, contractility ranged from 42 to 78% of control, and there was a decrease in compliance of 16 to 78%. Adequate preservation was found only after hypothermia and multidose potassium (35 mEq/L) cardioplegia. In this group, contractility was 129 +/- 13% of control and compliance increased by 21 +/- 24% compared to that of the control. PMID:14740689

  8. Is memory purely preservative?* Jrme Dokic

    E-print Network

    Paris-Sud XI, Université de

    1 Is memory purely preservative?* Jérôme Dokic (University of Rouen and CREA, Paris) In C. Hoerl & T. McCormack (eds), Time and Memory, Oxford: OUP. §1 Two forms of memory and Goethe's Problem Let us start with a familiar distinction between two forms of memory: episodic memory (remembering a thing

  9. Family Preservation for Children with Autism.

    ERIC Educational Resources Information Center

    Risley, Todd R.

    1997-01-01

    Reacting to an article describing the Individualized Support Project Program (EC 618 445) for young children with autism and their families, this article notes that the program's primary purpose is family preservation through restoring family efficacy, solving child behavior problems, and establishing child communication. The program is seen as…

  10. Privacy-preserving Queries over Relational Databases

    E-print Network

    Goldberg, Ian

    -- and partly because of the rising trend of online privacy invasion. Privacy-conscious users will acceptPrivacy-preserving Queries over Relational Databases Femi Olumofin and Ian Goldberg Cheriton School and microbenchmarking tests show our approach incurs reasonable storage overhead for the added privacy benefit

  11. Preservation and Conservation in the School Library.

    ERIC Educational Resources Information Center

    Sedinger, Theresa

    1992-01-01

    Discusses the necessity of preservation and conservation activities in school libraries to save materials such as school newspapers, programs of events, censorship records, board activities, yearbooks, and student projects. Topics discussed include brittle, deteriorating paper; monitoring the physical environment, including heat, light, humidity,…

  12. Micro-Preservation: Conserving the Small Library.

    ERIC Educational Resources Information Center

    DeCandido, Robert; DeCandido, GraceAnne A.

    1985-01-01

    Offers suggestions and outlines procedures for the preservation of the resources of a small library. Brief sections discuss environment (temperature, humidity, housekeeping, light); library binding; simple in-house repairs; other protective measures (enclosures, microfilming); the care of unique objects; and disaster planning. A 21-item…

  13. Effects of ethanol preservation on otolith microchemistry

    E-print Network

    Effects of ethanol preservation on otolith microchemistry K. J. HEDGES*, S. A. LUDSIN*§ AND B. J coupled plasma-mass spectrometry was used to examine the effects of exposure time to ethanol (0, 1, 3, 9, 27 and 81 days) and ethanol quality (ACS- v. HPLC- grade) on strontium (Sr) and barium (Ba

  14. Current Trends in Preservation Research and Development.

    ERIC Educational Resources Information Center

    Cunha, George Martin

    1990-01-01

    Overview of current trends in the preservation of library materials discusses collections conservation and management; climate control; insect and mold control; fire control; the effects of compact shelving; freezing and freeze-drying; space drying; alkaline paper; recycled paper; mass deacidification; and paper strengthening. (27 notes and…

  15. Symmetry preserving regularization with a cutoff

    E-print Network

    G. Cynolter; E. Lendvai

    2010-03-17

    A Lorentz and gauge symmetry preserving regularization method is proposed in 4 dimension based on momentum cutoff. We use the conditions of gauge invariance or freedom of shift of the loop-momentum to define the evaluation of the terms carrying Lorentz indices, e.g. proportional to k_{\\mu}k_{\

  16. Entanglement preservation on two coupled cavities

    E-print Network

    R. Rossi Jr

    2009-10-27

    The dynamics of two coupled modes sharing one excitation is considered. A scheme to inhibit the evolution of any initial state in subspace $\\{|1_{a},0_{b} >, |0_{a},1_{b}>\\}$ is presented. The scheme is based on the unitary interactions with an auxiliary subsystem, and it can be used to preserve the initial entanglement of the system.

  17. Nitrite and nitrosyl compounds in food preservation

    Microsoft Academic Search

    Richard Cammack; C. L Joannou; Xiao-Yuan Cui; Claudia Torres Martinez; Shaun R Maraj; Martin N Hughes

    1999-01-01

    Nitrite is consumed in the diet, through vegetables and drinking water. It is also added to meat products as a preservative. The potential risks of this practice are balanced against the unique protective effect against toxin-forming bacteria such as Clostridium botulinum. The chemistry of nitrite, and compounds derived from it, in food systems and bacterial cells are complex. It is

  18. Jellies, Jams, Preserves, Marmalades, and Butters.

    E-print Network

    Sweeten, Mary K.

    1979-01-01

    ........................... 11 Marmalade recipes ......................... 13 Fruit Butters Preparation ................................ 14 Recipes ................................... 15 Jams and Jellies with No Added Sugar Sugarless jams ............................ 16...; and stand jar upright to cool. BOILING WATER BATH PROCESS Use the boiling water bath method for jams, preserves, marmalades and fruit butters. The follow ing steps for processing in a boiling water bath apply to these fruit products. 1. Wipe off...

  19. Asphalt, Concrete, and Turf Maintenance and Preservation

    E-print Network

    Minnesota, University of

    1 Asphalt, Concrete, and Turf Maintenance and Preservation Workshop Highlights In May 2003 of concrete, asphalt, and turf pavements. The workshop focused on the special materials required at airports sound pavement. Preventive maintenance is basically performing the right treatment on the right road (or

  20. Translational environmental biology: cell biology informing conservation

    E-print Network

    Palumbi, Stephen

    Translational environmental biology: cell biology informing conservation Nikki Traylor 93950, USA Typically, findings from cell biology have been beneficial for preventing human disease. However, translational applications from cell biology can also be applied to conservation efforts

  1. BIOLOGY MINOR WORKSHEET REQUIRED BIOLOGY COURSES

    E-print Network

    BIOLOGY MINOR WORKSHEET 2008-2013 REQUIRED BIOLOGY COURSES: BIOL 115N General Biology I 4 ________ BIOL 116N General Biology II 4 ________ Upon completion of BIOL 115N and BIOL 116N, the Biology Minor requires the successful completion of a minimum of 12 credit-hours of Biology coursework at the advanced

  2. NASA Biological Specimen Repository

    NASA Technical Reports Server (NTRS)

    McMonigal, K. A.; Pietrzyk, R. A.; Sams, C. F.; Johnson, M. A.

    2010-01-01

    The NASA Biological Specimen Repository (NBSR) was established in 2006 to collect, process, preserve and distribute spaceflight-related biological specimens from long duration ISS astronauts. This repository provides unique opportunities to study longitudinal changes in human physiology spanning may missions. The NBSR collects blood and urine samples from all participating ISS crewmembers who have provided informed consent. These biological samples are collected once before flight, during flight scheduled on flight days 15, 30, 60, 120 and within 2 weeks of landing. Postflight sessions are conducted 3 and 30 days after landing. The number of in-flight sessions is dependent on the duration of the mission. Specimens are maintained under optimal storage conditions in a manner that will maximize their integrity and viability for future research The repository operates under the authority of the NASA/JSC Committee for the Protection of Human Subjects to support scientific discovery that contributes to our fundamental knowledge in the area of human physiological changes and adaptation to a microgravity environment. The NBSR will institute guidelines for the solicitation, review and sample distribution process through establishment of the NBSR Advisory Board. The Advisory Board will be composed of representatives of all participating space agencies to evaluate each request from investigators for use of the samples. This process will be consistent with ethical principles, protection of crewmember confidentiality, prevailing laws and regulations, intellectual property policies, and consent form language. Operations supporting the NBSR are scheduled to continue until the end of U.S. presence on the ISS. Sample distribution is proposed to begin with selections on investigations beginning in 2017. The availability of the NBSR will contribute to the body of knowledge about the diverse factors of spaceflight on human physiology.

  3. SYSTEM BIOLOGY: Biological Systems Theory

    NSDL National Science Digital Library

    Jeremy Gunawardena (Harvard Medical School; Department of Systems Biology)

    2010-04-30

    Robustness, a widely used concept in biology, has so far not been well defined. This perspective discusses the theorem formulated by Shinar and Feinberg which shows when a biochemical network exhibits â??absolute concentration robustness.â?ť

  4. Preservation Planning for Digital Information: Final Report of the HVC2 Digital Preservation Task Force

    E-print Network

    Fyffe, Richard; Ludwig, Deborah; Roach, Mary; Schulte, Becky; Warner, Beth Forrest

    2004-11-11

    System (OAIS) (http://ssdoo.gsfc.nasa.gov/nost/isoas/ref_model.html) which are based University of Kansas - Preservation Planning for Digital Information Appendix C on the report "Preserving Digital Information" (http://www.rlg.org/ArchTF/) from... as necessary. Additionally: OAIS has been designated as an ISO standard ISO 14721:2002. Is being used by NARA for federal records. (http://ssdoo.gsfc.nasa.gov/nost/isoas/ref_model.html) Metadata, Rights Management, Persistent Identifiers...

  5. BIOCHEMISTRY AND MOLECULAR BIOLOGY

    E-print Network

    Wilson, Mark A.

    BIOCHEMISTRY AND MOLECULAR BIOLOGY CURRICULUM COMMITTEE: William Morgan (Biology), Chair Paul) Stephanie Strand (Biology) James West (Biochemistry and Molecular Biology) Crystal Young (Biochemistry and Molecular Biology) This interdisciplinary program, jointly administered by faculty from the Departments

  6. Biological Oceanography

    NASA Technical Reports Server (NTRS)

    Abbott, M. R.

    1984-01-01

    Within the framework of global biogeochemical cycles and ocean productivity, there are two areas that will be of particular interest to biological oceanography in the 1990s. The first is the mapping in space time of the biomass and productivity of phytoplankton in the world ocean. The second area is the coupling of biological and physical processes as it affects the distribution and growth rate of phytoplankton biomass. Certainly other areas will be of interest to biological oceanographers, but these two areas are amenable to observations from satellites. Temporal and spatial variability is a regular feature of marine ecosystems. The temporal and spatial variability of phytoplankton biomass and productivity which is ubiquitous at all time and space scales in the ocean must be characterized. Remote sensing from satellites addresses these problems with global observations of mesocale (2 to 20 days, 10 to 200 km) features over a long period of time.

  7. Doing Biology

    NSDL National Science Digital Library

    Allchin, Douglas, 1956-

    2012-06-15

    Scientists Joel Hagen, Douglas Allchin, and Fred Singers created the "Doing Biology" book and its accompanying website. They are concerned with reforming science education, and their goal is to have students learn more "about the history and nature of science, about science in practice-about doing biology." The first iteration of their book, which appeared in 1996, contained over a dozen historical case studies arranged in a guided inquiry format. The version on this site contains seventeen different chapters, organized into themes such as cellular biology, evolution, and diversity. Each chapter contains a biography of a scientist, along with a discussion about their work and area of inquiry. The online chapters include "Nettie Stevens & Sex Discrimination," "Peter Mitchell & How Cells Make ATP," and "Lynn Margulis & How Cells Evolved." Additionally, at the conclusion of each chapter, questions and activities can be found.

  8. Biological Imaging

    NSDL National Science Digital Library

    C.L. Rieder (AAAS; )

    2003-04-04

    From investigating development to tracking cancer to nailing down the intricate mechanisms of cell division, scientists are using a bevy of new imaging techniques -- as well as new twists on some old standbys -- to push out the frontiers of biological knowledge. Science explores the state of the art in the field in its 4 April 2003 special issue on biological imaging. This slide show touches on some imaging highlights featured in that issue, as well as some notable accomplishments in bioimaging that have appeared recently in other issues of the journal.

  9. Biological rhythms

    NASA Technical Reports Server (NTRS)

    Halberg, F.

    1975-01-01

    An overview is given of basic features of biological rhythms. The classification of periodic behavior of physical and psychological characteristics as circadian, circannual, diurnal, and ultradian is discussed, and the notion of relativistic time as it applies in biology is examined. Special attention is given to circadian rhythms which are dependent on the adrenocortical cycle. The need for adequate understanding of circadian variations in the basic physiological indicators of an individual (heart rate, body temperature, systolic and diastolic blood pressure, etc.) to ensure the effectiveness of prophylactic and therapeutic measures is stressed.

  10. Contact allergy to preservatives--II.

    PubMed

    de Groot, A C; Bos, J D; Jagtman, B A; Bruynzeel, D P; van Joost, T; Weyland, J W

    1986-10-01

    To determine whether the prevalence of allergic reactions to certain preservatives warrants their inclusion in a routine series for patch testing, a tray of 14 preservatives was tested in 501 consecutive suspected contact dermatitis patients. More than 1% positive reactions were found with DMDM hydantoin, Kathon CG, and alkyl trimethyl ammonium chloride only. The concentration of alkyl trimethyl ammonium chloride (0.1% aqua) was considered too high. Of 6 patients reacting to the formaldehyde releaser DMDM hydantoin, 4 were positive to formaldehyde. Kathon CG may be an important allergen in the Netherlands, and it is worthwhile for dermatologists there to add it to the standard test series. The recent inclusion of quaternium-15 in the ICDRG standard series appears to be of little value to them. PMID:3492332

  11. [Contact allergies to recently introduced preservatives].

    PubMed

    Senff, H; Köllner, A; Tholen, S; Frosch, P J

    1991-04-01

    Preservatives have come under fire due to their possible detrimental properties and the high rate of contact allergies some of them cause. Therefore, the pharmaceutical industry is searching for alternatives that will be effective, safe and economical. The present paper introduces a selection of new or revived biocides (Kathon CG, benzisothiazolinone, Euxyl K 400, Biobans, Grotans, Bronopol, Germall II), and the range of application and the sensitization potency of each are discussed. Test concentrations for patch tests are recommended. Kathon CG is the most commonly used preservative among these biocides, although it has a high sensitization potency and is a frequently encountered contact allergen. To make discovery of a new allergen easier and to reduce the risk of side effects, manufacturers should be required to specify the ingredients of their products on the labels. PMID:1830567

  12. Irradiation preservation of seafood: Literature review

    SciTech Connect

    Molton, P.M.

    1987-10-01

    The application of gamma-irradiation for extending the shelf life of seafood has been of interest for many years. This report reviews a number of studies on seafood irradiation conducted over the past several years. Topics covered include seafood irradiation techniques and dosages, species applicability and differences, the effects of packaging on seafood preservation, and changes in organoleptic acceptability as a result of irradiation. Particular attention is given to radiation effects (likely and unlikely) of concern to the public. These include the potential for generation of toxic chemical products, botulinum toxin production, and other health concerns. No scientifically defensible evidence of any kind was found for any harmful effect of irradiation of seafoods at the doses being considered (less than 300 krad), and all indications are that irradiation is an acceptable and needed additional tool for seafood preservation. 49 refs., 14 figs., 14 tabs.

  13. A Mesozoic bird from Gondwana preserving feathers.

    PubMed

    de Souza Carvalho, Ismar; Novas, Fernando E; Agnolín, Federico L; Isasi, Marcelo P; Freitas, Francisco I; Andrade, José A

    2015-01-01

    The fossil record of birds in the Mesozoic of Gondwana is mostly based on isolated and often poorly preserved specimens, none of which has preserved details on feather anatomy. We provide the description of a fossil bird represented by a skeleton with feathers from the Early Cretaceous of Gondwana (NE Brazil). The specimen sheds light on the homology and 3D structure of the rachis-dominated feathers, previously known from two-dimensional slabs. The rectrices exhibit a row of rounded spots, probably corresponding to some original colour pattern. The specimen supports the identification of the feather scapus as the rachis, which is notably robust and elliptical in cross-section. In spite of its juvenile nature, the tail plumage resembles the feathering of adult individuals of modern birds. Documentation of rachis-dominated tail in South American enantiornithines broadens the paleobiogeographic distribution of basal birds with this tail feather morphotype, up to now only reported from China. PMID:26035285

  14. A Mesozoic bird from Gondwana preserving feathers

    PubMed Central

    de Souza Carvalho, Ismar; Novas, Fernando E.; Agnolín, Federico L.; Isasi, Marcelo P.; Freitas, Francisco I.; Andrade, José A.

    2015-01-01

    The fossil record of birds in the Mesozoic of Gondwana is mostly based on isolated and often poorly preserved specimens, none of which has preserved details on feather anatomy. We provide the description of a fossil bird represented by a skeleton with feathers from the Early Cretaceous of Gondwana (NE Brazil). The specimen sheds light on the homology and 3D structure of the rachis-dominated feathers, previously known from two-dimensional slabs. The rectrices exhibit a row of rounded spots, probably corresponding to some original colour pattern. The specimen supports the identification of the feather scapus as the rachis, which is notably robust and elliptical in cross-section. In spite of its juvenile nature, the tail plumage resembles the feathering of adult individuals of modern birds. Documentation of rachis-dominated tail in South American enantiornithines broadens the paleobiogeographic distribution of basal birds with this tail feather morphotype, up to now only reported from China. PMID:26035285

  15. 12 CFR 1070.62 - Preservation of records.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...2014-01-01 false Preservation of records. 1070.62 Section 1070...Banking BUREAU OF CONSUMER FINANCIAL PROTECTION DISCLOSURE OF RECORDS AND INFORMATION The Privacy...1070.62 Preservation of records. The CFPB will...

  16. 12 CFR 1070.62 - Preservation of records.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...2012-01-01 false Preservation of records. 1070.62 Section 1070...Banking BUREAU OF CONSUMER FINANCIAL PROTECTION DISCLOSURE OF RECORDS AND INFORMATION The Privacy...1070.62 Preservation of records. The CFPB will...

  17. 12 CFR 1070.62 - Preservation of records.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...2013-01-01 false Preservation of records. 1070.62 Section 1070...Banking BUREAU OF CONSUMER FINANCIAL PROTECTION DISCLOSURE OF RECORDS AND INFORMATION The Privacy...1070.62 Preservation of records. The CFPB will...

  18. 38 CFR 1.952 - Preservation of evidence.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS GENERAL PROVISIONS Referrals to Gao, Department of Justice, Or Irs § 1.952 Preservation of evidence. VA must take care to preserve all files and records that may be needed by...

  19. 38 CFR 1.952 - Preservation of evidence.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS GENERAL PROVISIONS Referrals to Gao, Department of Justice, Or Irs § 1.952 Preservation of evidence. VA must take care to preserve all files and records that may be needed by...

  20. 38 CFR 1.952 - Preservation of evidence.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS GENERAL PROVISIONS Referrals to Gao, Department of Justice, Or Irs § 1.952 Preservation of evidence. VA must take care to preserve all files and records that may be needed by...

  1. 38 CFR 1.952 - Preservation of evidence.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS GENERAL PROVISIONS Referrals to Gao, Department of Justice, Or Irs § 1.952 Preservation of evidence. VA must take care to preserve all files and records that may be needed by...

  2. 36 CFR 1600.28 - Preservation of records.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    36 Parks, Forests, and Public Property...2011-07-01 false Preservation of records. 1600...1600.28 Parks, Forests, and Public Property...1974 § 1600.28 Preservation of records. ...title 44 of the United States Code or the...

  3. 36 CFR 1600.28 - Preservation of records.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    36 Parks, Forests, and Public Property...2010-07-01 false Preservation of records. 1600...1600.28 Parks, Forests, and Public Property...1974 § 1600.28 Preservation of records. ...title 44 of the United States Code or the...

  4. Detail-Preserving Variational Surface Design with Multiresolution Constraints

    E-print Network

    Paris-Sud XI, Université de

    Detail-Preserving Variational Surface Design with Multiresolution Constraints Ioana Boier- totyping. The modeled shape is represented as a Catmull- Clark multiresolution subdivision surface which is on handling multiresolution constraints of different kinds and on preserving surface details through- out

  5. 4 CFR 201.15 - Preservation of records.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 2010-01-01 false Preservation of records. 201.15 Section 201.15 Accounts RECOVERY ACCOUNTABILITY AND TRANSPARENCY BOARD PUBLIC INFORMATION AND REQUESTS § 201.15 Preservation of records. The Board shall...

  6. Overview of water fowl preserve from street to south ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Overview of water fowl preserve from street to south - Fitzsimons General Hospital, Water Fowl Preserve, 550 feet Northeast of intersection of East Colfax Avenue & Peoria Street, Aurora, Adams County, CO

  7. Digital Materiality: Preserving Access to Computers as Complete Environments

    E-print Network

    2009-01-01

    its born-digital materials in a DSpace repository hosted bythe digital preservation challenges at each repository anddigital preservation program has been influenced by collaborative projects with other institutions and repositories.

  8. Deflating Quadratic Matrix Polynomials with Structure Preserving Transformations

    E-print Network

    Tisseur, Francoise

    polynomials, both theoretically and numerically, is to convert them into equivalent linear matrix pencilsDeflating Quadratic Matrix Polynomials with Structure Preserving Transformations Francoise Tisseur ISSN 1749-9097 #12;Deflating Quadratic Matrix Polynomials with Structure Preserving Transformations

  9. Cascaded phase-preserving multilevel amplitude regeneration.

    PubMed

    Roethlingshoefer, Tobias; Onishchukov, Georgy; Schmauss, Bernhard; Leuchs, Gerd

    2014-12-29

    The performance of cascaded in-line phase-preserving amplitude regeneration using nonlinear amplifying loop mirrors has been studied in numerical simulations. As an example of a spectrally efficient modulation format with two amplitude states and multiple phase states, the regeneration performance of a star-16QAM format, basically an 8PSK format with two amplitude levels, was evaluated. An increased robustness against amplified spontaneous emission and nonlinear phase noise was observed resulting in a significantly increased transmission distance. PMID:25607142

  10. Exceptionally Preserved Jellyfishes from the Middle Cambrian

    E-print Network

    Cartwright, Paulyn; Halgedahl, Susan L.; Hendricks, Jonathan R.; Jarrard, Richard D.; Marques, Antonio C.; Collins, Allen G.; Lieberman, Bruce S.

    2007-10-01

    and sea anemones, and Medusozoa, including scyphozoans (true jellyfish), cubozoans (box jellies), hydrozoans (hydroids, Hydra, and hydromedusae) and staurozoans (stalked medusae) [2]. Typically, medusozoan cnidarians have a pelagic, predatory jellyfish... the umbrellar margin. Due to the limited number of preserved characters it is difficult to determine how these specimens should be classified within Medusozoa. However, members of the hydrozoan family Narco- medusae do possess similar relative umbrella...

  11. Preserving Video Quality in IPTV Networks

    Microsoft Academic Search

    Javed Asghar; F. Le Faucheur; I. Hood

    2009-01-01

    Growing numbers of service providers are implementing video services over IP networks, and discovering the unique challenges of providing a high quality-of-experience (QoE) to subscribers. Delivering consistent QoE in packet-switched networks can be a complex proposition due to the high sensitivity of video traffic to packet loss, as well as to delay and jitter. Preserving video quality in IP Television

  12. Privacy Preserving k Secure Sum Protocol

    E-print Network

    Sheikh, Rashid; Mishra, Durgesh Kumar

    2009-01-01

    Secure Multiparty Computation (SMC) allows parties to know the result of cooperative computation while preserving privacy of individual data. Secure sum computation is an important application of SMC. In our proposed protocols parties are allowed to compute the sum while keeping their individual data secret with increased computation complexity for hacking individual data. In this paper the data of individual party is broken into a fixed number of segments. For increasing the complexity we have used the randomization technique with segmentation

  13. Cryogenic preservation of fish and mammalian spermatozoa

    Microsoft Academic Search

    M. S. Mounib

    1978-01-01

    Summary. Various combinations of sucrose, reduced glutathione and potassium bi- carbonate were tested for the cryogenic preservation of salmon spermatozoa. When a fast freezing procedure was followed, the extender that gave the best results was composed of 1 part ofdimethyl sulphoxide (DMSO), as a protective agent, and 7 parts of a medium containing 125 mM-sucrose, 6.50 mM-reduced glutathione and 100

  14. Preserved Network Metrics across Translated Texts

    NASA Astrophysics Data System (ADS)

    Cabatbat, Josephine Jill T.; Monsanto, Jica P.; Tapang, Giovanni A.

    2014-09-01

    Co-occurrence language networks based on Bible translations and the Universal Declaration of Human Rights (UDHR) translations in different languages were constructed and compared with random text networks. Among the considered network metrics, the network size, N, the normalized betweenness centrality (BC), and the average k-nearest neighbors, knn, were found to be the most preserved across translations. Moreover, similar frequency distributions of co-occurring network motifs were observed for translated texts networks.

  15. Hypothermic preservation of peripheral nerve grafts: A histomorphometric study

    Microsoft Academic Search

    Akihito Tsujino; Koichiro Hayashi; Isao Koshima

    1996-01-01

    Nerve preservation is essential for peripheral nerve grafting. We studied nerve regeneration in autografts preserved under\\u000a hypothermic conditions. Twenty-mm sciatic nerve segments were resected from Lewis rats and preserved at 4C for 0 to 48h,\\u000a the duration of preservation being increased in 12-h increments. These nerve segments were then transplanted to syngeneic\\u000a rats. At 15 weeks, the recipient sciatic nerves

  16. Preservative use in topical glaucoma medications.

    PubMed

    Tressler, Charles S; Beatty, Richard; Lemp, Michael A

    2011-07-01

    Benzalkonium chloride (BAK) is the principal preservative employed in topical ocular hypotensive medications, although alternative compounds recently have begun to be employed or examined. Individual clinical trials have shown that exposure to BAK concentrations contained in ophthalmic solutions does not produce adverse sequelae in the majority of glaucoma patients, but concerns continue with regard to its long-term use. These concerns have resulted from an extensive research effort, including preclinical studies with in vitro and in vivo models, as well as recent clinical investigations dedicated specifically to this issue. The aim of this systematic literature review of both preclinical and clinical data was to determine the relevance of these findings to clinical practice. Most preclinical studies reported negative effects of BAK exposure, but with few exceptions, BAK concentrations and exposure times greatly exceeded those likely to be experienced by patients, given the normal physiological dilution by the tear film. In addition, consistent evidence of BAK-related toxicity did not emerge from our review of dedicated clinical investigations. Thus, taken together, current evidence supports the safety of BAK for most glaucoma patients, although subpopulations with abnormal tearing may benefit from alternative preservative compounds or preservative-free formulations. Further studies to identify these populations are needed. PMID:21791189

  17. HERA Data Preservation plans and activities

    NASA Astrophysics Data System (ADS)

    Szuba, J.; DESY Data Preservation Group

    2011-12-01

    An international inter-experimental study group on data preservation and long-term analysis in HEP (DPHEP) was convened at the end of 2008 and held a series of workshops during 2009. The HERA experiments H1, ZEUS, HERMES as well as the IT division and the Library are well represented in DPHEP and efforts are now being made to form a coherent approach at DESY. Various options for preservation are explored, from permanent evolution (H1) to the use of virtualisation techniques (ZEUS). Both experiments have planned the computing and the associated resources until 2013 and now explore possibilities to ensure the maintenance of the data analysis capabilities beyond 2013. A common effort and additional resources may lead to longer viability of data analysis. Technical solutions have been investigated by DESY-IT and involve virtualisation systems tailored for long term software preservation as well as systems for self consistent data archiving and migration. The communication between experiments, DESY-IT and the Library have put forward the possibility for further common developments related to documentation scanning and storage as well as pilot projects within the HEP documentation system INSPIRE. The evaluation of such projects is ongoing and concrete proposals to ensure HERA data analysis after 2013 are expected in 2010.

  18. Mass preserving registration for lung CT

    NASA Astrophysics Data System (ADS)

    Gorbunova, Vladlena; Lo, Pechin; Loeve, Martine; Tiddens, Harm A.; Sporring, Jon; Nielsen, Mads; de Bruijne, Marleen

    2009-02-01

    In this paper, we evaluate a novel image registration method on a set of expiratory-inspiratory pairs of computed tomography (CT) lung scans. A free-form multi resolution image registration technique is used to match two scans of the same subject. To account for the differences in the lung intensities due to differences in inspiration level, we propose to adjust the intensity of lung tissue according to the local expansion or compression. An image registration method without intensity adjustment is compared to the proposed method. Both approaches are evaluated on a set of 10 pairs of expiration and inspiration CT scans of children with cystic fibrosis lung disease. The proposed method with mass preserving adjustment results in significantly better alignment of the vessel trees. Analysis of local volume change for regions with trapped air compared to normally ventilated regions revealed larger differences between these regions in the case of mass preserving image registration, indicating that mass preserving registration is better at capturing localized differences in lung deformation.

  19. Scalable similarity search with topology preserving hashing.

    PubMed

    Zhang, Lei; Zhang, Yongdong; Gu, Xiaoguang; Tang, Jinhui; Tian, Qi

    2014-07-01

    Hashing-based similarity search techniques is becoming increasingly popular in large data sets. To capture meaningful neighbors, the topology of a data set, which represents the neighborhood relationships between its subregions and the relative proximities between the neighbors of each subregion, e.g., the relative neighborhood ranking of each subregion, should be exploited. However, most existing hashing methods are developed to preserve neighborhood relationships while ignoring the relative neighborhood proximities. Moreover, most hashing methods lack in providing a good result ranking, since there are often lots of results sharing the same Hamming distance to a query. In this paper, we propose a novel hashing method to solve these two issues jointly. The proposed method is referred to as topology preserving hashing (TPH). TPH is distinct from prior works by also preserving the neighborhood ranking. Based on this framework, we present three different TPH methods, including linear unsupervised TPH, semisupervised TPH, and kernelized TPH. Particularly, our unsupervised TPH is capable of mining semantic relationship between unlabeled data without supervised information. Extensive experiments on four large data sets demonstrate the superior performances of the proposed methods over several state-of-the-art unsupervised and semisupervised hashing techniques. PMID:24860034

  20. Riverscape and Groundwater Preservation: A Choice Experiment

    NASA Astrophysics Data System (ADS)

    Tempesta, T.; Vecchiato, D.

    2013-12-01

    This study presents a quantitative approach to support policy decision making for the preservation of riverscapes, taking into account the EC Water Framework Directive (2000/60/EC) and the EC Nitrates Directive (91/676/EEC) concerning the protection of waters against nitrate pollution from agricultural sources. A choice experiment was applied to evaluate the benefits, as perceived by inhabitants, of the implementation of policies aiming to reduce the concentration of nitrates in groundwater, preserve the riverscape by maintaining a minimum water flow and increasing hedges and woods along the Serio River in central northern Italy. Findings suggested that people were particularly concerned about groundwater quality, probably because it is strongly linked to human health. Nevertheless, it was interesting to observe that people expressed a high willingness to pay for actions that affect the riverscape as a whole (such as the minimum water flow maintenance plus reforestation). This is probably due to the close connection between the riverscape and the functions of the river area for recreation, health purposes, and biodiversity preservation.

  1. Runtime Programming through Model-Preserving, Scalable Runtime Patches

    Microsoft Academic Search

    Christoph M. Kirsch; Luis Lopes; Eduardo R. B. Marques; Ana Sokolova

    2011-01-01

    We consider a methodology for flexible software design, runtime programming, defined by recurrent, incremental software modi- fications to a program at runtime, called runtime patches. The principles we consider for runtime programming are model preservation and scalability. Model preservation means that a runtime patch preserves the programming model in place for programs — in terms of syntax, semantics, and correctness

  2. Basic aspects of food preservation by hurdle technology

    Microsoft Academic Search

    Lothar Leistner

    2000-01-01

    Hurdle technology is used in industrialized as well as in developing countries for the gentle but effective preservation of foods. Previously hurdle technology, i.e., a combination of preservation methods, was used empirically without much knowledge of the governing principles. Since about 20 years the intelligent application of hurdle technology became more prevalent, because the principles of major preservative factors for

  3. The Commission on Preservation and Access Newsletter. 1994.

    ERIC Educational Resources Information Center

    Commission on Preservation and Access Newsletter, 1994

    1994-01-01

    The Commission on Preservation and Access was established in 1986 to foster and support collaboration among libraries and allied organizations in order to ensure the preservation of the published and documentary record in all formats and to provide enhanced access to scholarly information. The Commission's newsletter keeps the preservation and…

  4. Video Preservation and Digital Reformatting: Pain and Possibility

    ERIC Educational Resources Information Center

    McDonough, Jerome; Jimenez, Mona

    2006-01-01

    The digital library community is increasingly concerned with long-term preservation of digital materials. This concern presents an opportunity for strategic alliances between digital library units and preservation departments confronting the difficulties inherent in preservation reformatting of moving image materials. However, successful…

  5. Leaching of chromated copper arsenate wood preservatives: a review

    Microsoft Academic Search

    J. A Hingston; C. D Collins; R. J Murphy; J. N Lester

    2001-01-01

    Recent studies have generated conflicting data regarding the bioaccumulation and toxicity of leachates from preservative-treated wood. Due to the scale of the wood preserving industry, timber treated with the most common preservative, chromated copper arsenate (CCA), may form a significant source of metals in the aquatic environment. The existing literature on leaching of CCA is reviewed, and the numerous factors

  6. Public Preferences Regarding the Goals of Farmland Preservation Programs

    Microsoft Academic Search

    Jeffrey Kline; Dennis Wichelns

    1996-01-01

    Farmland preservation programs exist in all states. Most programs pursue agricultural objectives, such as preserving productive soils and viable farms. However, in some states the public may believe that programs should pursue broader goals often associated with preserving open space. Focus groups and a survey of Rhode Island residents provide information and data for factor analysis of preferences regarding farmland

  7. The DELOS Testbed for Choosing a Digital Preservation Strategy

    E-print Network

    Rauber,Andreas

    suitable preservation solution is the most difficult part. The decision which strategy to follow and whichThe DELOS Testbed for Choosing a Digital Preservation Strategy Stephan Strodl1 , Andreas Rauber1. A set of strategies has been proposed, with a range of tools supporting parts of digital preservation

  8. 3D Object Digitization: Topology Preserving Reconstruction Peer Stelldinger

    E-print Network

    Latecki, Longin Jan

    3D Object Digitization: Topology Preserving Reconstruction Peer Stelldinger University of Hamburg is the first one to guarantee topology preservation during digitization of 3D objects. This new theorem properties are preserved when digitizing a 3D r-regular object with a sufficiently dense sampling grid [3

  9. Secure Multiparty Computation for Privacy-Preserving Data Mining

    E-print Network

    Secure Multiparty Computation for Privacy-Preserving Data Mining Yehuda Lindell Benny Pinkas May 6 and discuss their relevance to the field of privacy-preserving data mining. In addition to re- viewing to privacy-preserving data mining. Finally, we discuss the relationship between secure multiparty computation

  10. Automating Logical Preservation for Small Institutions with Hoppla

    E-print Network

    Automating Logical Preservation for Small Institutions with Hoppla Stephan Strodl, Petar Petrov back-up and fully automated migra- tion services for data collections in environments with limited and outsources digital preservation expertise. This paper presents the automated logical preservation process

  11. Shape-preserving computation in economic growth models

    Microsoft Academic Search

    Sheng-pen Wang

    2001-01-01

    We point out the shape characteristics — monotonicity and concavity — of the value functions of optimal economic growth problems. We introduce the concept of shape preservation in approximating the value functions. We also present a shape-preserving algorithm to compute the solutions of continuous-state optimal economic growth problems. Numerical results show that shape-preserving interpolation methods are superior to others with

  12. Protected trees A guide to tree preservation procedures

    E-print Network

    Protected trees A guide to tree preservation procedures #12;Protected trees A guide to tree trees: A guide to tree preservation procedures Introduction This leaflet is written for tree owners, their neighbours and local community groups, and answers some of the most common questions about tree preservation

  13. Preservation of interpolation features Walter Carnielli1,2

    E-print Network

    Lisboa, Universidade Técnica de

    Preservation of interpolation features by fibring Walter Carnielli1,2 Jo~ao Rasga1 Cristina. The interest for such preservation results for combining logics is evident, and they have been achieved reasoning, the question of preservation of interpolation becomes more subtle and other forms

  14. Preserving Geospatial Data: The National Geospatial Digital Archive's Approach

    E-print Network

    Janée, Greg

    Preserving Geospatial Data: The National Geospatial Digital Archive's Approach Greg Janée Information Infrastructure and Preservation Program (NDIIPP). The project's overarching goal is to answer the question: How can we preserve geospatial data on a national scale and make it available to future

  15. Energy Preserving Schemes for Nonlinear Hamiltonian Systems of Wave Equations.

    E-print Network

    Paris-Sud XI, Université de

    Energy Preserving Schemes for Nonlinear Hamiltonian Systems of Wave Equations. Application on the mathematical study of these systems, showing central properties (energy preservation, stability, hyperbolicity of "preserving schemes" is introduced, and we show that explicit schemes or partially implicit schemes which

  16. PRESERVATION PROCESSING STEPS FOR PAPER-BASED COLLECTIONS

    E-print Network

    Mathis, Wayne N.

    PRESERVATION PROCESSING STEPS FOR PAPER-BASED COLLECTIONS Collection is accessioned into the legal as a priority for preservation is surveyed to determine resource needs such as housing, duplication, treatment project, depending on the degree of processing desired. (Preservation planning must establish

  17. Volume-preserving Mesh Skinning Wolfram von Funck1

    E-print Network

    Volume-preserving Mesh Skinning Wolfram von Funck1 , Holger Theisel2 , Hans-Peter Seidel1 1 MPI,hpseidel}@mpi-inf.mpg.de, theisel@isg.cs.uni-magdeburg.de Abstract We present a straightforward, yet effective approach to volume-preserving preservation is also able to deal with extreme articulations without distortion artifacts. 1 Introduction Mesh

  18. Preservation of timed properties during an incremental development by components

    E-print Network

    Paris-Sud XI, Université de

    Preservation of timed properties during an incremental development by components Jacques Julliand {julliand,mountass,oudot}@lifc.univ-fcomte.fr Abstract. We are interested in the preservation of local in the complete system, using some composition operator. Of course, established properties have to be preserved

  19. Privacy-Preserving Outsourcing of Brute-Force Key Searches

    E-print Network

    Capkun, Srdjan

    Privacy-Preserving Outsourcing of Brute-Force Key Searches Ghassan O. Karame Dept. of Computer@inf.ethz.ch ABSTRACT In this work, we investigate the privacy-preserving prop- erties of encryption algorithms the plaintext or the decryption key. We call this a privacy- preserving cryptographic key search. We provide

  20. Digital preservation of audiovisual files within PrestoPRIME

    E-print Network

    Southampton, University of

    Digital preservation of audiovisual files within PrestoPRIME Matthew J. Addis1 , Walter Allasia2 Preservation, AV Content Access 1 Introduction The common thinking about digital files worthlessness and technical troubles. Additionally, all the costs (investments) for digital AV preservation can

  1. Preserving Interactive Content: Strategies, Significant Properties and Automatic

    E-print Network

    Preserving Interactive Content: Strategies, Significant Properties and Automatic Testing Mark@ifs.tuwien.ac.at Abstract. Preserving digital data is becoming a more important issue with the growing amount of data or analog tape have to be kept accessible, also interactive forms of data have to be preserved. Interactive

  2. MAPS PRESERVING PERIPHERAL SPECTRUM OF JORDAN PRODUCTS OF OPERATORS

    E-print Network

    Li, Chi-Kwong

    MAPS PRESERVING PERIPHERAL SPECTRUM OF JORDAN PRODUCTS OF OPERATORS JIANLIAN CUI AND CHI-KWONG LI preserving the peripheral spectrum of the product AB + B A, and prove that such maps are of the form A UAU which preserve the spectrum are exten- sively studied in connection with a longstanding open problem

  3. Privacy Preserving Data Aggregating with Multiple Access Channel

    E-print Network

    Bruck, Jehoshua (Shuki)

    Privacy Preserving Data Aggregating with Multiple Access Channel Hongyi Yao and Tracey Ho eavesdroppers to try to retrieve the message information of the users. Privacy preserving data aggregation (or privacy pre- serving computation) is a basis for applications such as privacy preserving machine learning

  4. Preservation of proof obligations for hybrid verification methods Gilles Barthe

    E-print Network

    Paris-Sud XI, Université de

    Preservation of proof obligations for hybrid verification methods Gilles Barthe IMDEA Software generation, compilation preserves proof obligations and therefore it is possible to transfer evidence from source to compiled programs. Our result relies on the preservation of the solutions of analysis

  5. Invertibility preservers on central simple algebras Peter Semrl

    E-print Network

    Semrl, Peter

    Invertibility preservers on central simple algebras Peter Semrl Faculty of Mathematics and Physics of maps on central simple alge- bras. AMS classification: 15A86, 16K20 Keywords: invertibility preserving of the main result Let A and B be unital algebras over a field F. A linear map : A B preserves invertibility

  6. Angle-preserving Quantized Phase Embeddings Petros T. Boufounos

    E-print Network

    Boufounos, Petros T.

    Angle-preserving Quantized Phase Embeddings Petros T. Boufounos Mitsubishi Electric Research-valued projections of real-valued signals preserves in- formation about the angle, i.e., the correlation, between those signals. This information can be exploited to design quantized angle-preserving embeddings, which

  7. EDGE PRESERVING FILTERS USING GEODESIC DISTANCES ON WEIGHTED ORTHOGONAL DOMAINS

    E-print Network

    California at Santa Barbara, University of

    EDGE PRESERVING FILTERS USING GEODESIC DISTANCES ON WEIGHTED ORTHOGONAL DOMAINS Luca Bertelli, B for image enhancement, which smooths images while preserving edge information. Domain (spatial) and range the geodesic distances. We show promising re- sults in edge-preserving denoising of gray scale, color

  8. Order-preserving pattern matching with k mismatches

    E-print Network

    Lonardi, Stefano

    Order-preserving pattern matching with k mismatches Pawel Gawrychowski1 and Przemyslaw Uzna´nski2, Marseille, France Gawrychowski and Uzna´nski Order-preserving pattern matching 1 / 19 #12;The starting point Order-preserving pattern matching Given a text, find its fragment, which is order

  9. Preservation of Craig interpolation the product of matrix logics

    E-print Network

    Lisboa, Universidade Técnica de

    Preservation of Craig interpolation by the product of matrix logics C. Sernadas J. Rasga A, is shown to preserve a slightly relaxed notion of Craig inter- polation. The result is established by their meet-combination. Along the way preservation of the metatheo- rem of deduction is also proved

  10. Performance Preserving Network Downscaling Fragkiskos Papadopoulos, Konstantinos Psounis, Ramesh Govindan

    E-print Network

    Performance Preserving Network Downscaling Fragkiskos Papadopoulos, Konstantinos Psounis, Ramesh] is the addition of a new prong--a class of performance-preserving network downscaling techniques that lets of the network, where the downscaling is designed to preserve one or more aspects of the original network

  11. Behavior Preservation in Model Refactoring using DPO Transformations with Borrowed

    E-print Network

    Baldan, Paolo

    Behavior Preservation in Model Refactoring using DPO Transformations with Borrowed Contexts, Italy baldan@math.unipd.it Abstract. Behavior preservation, namely the fact that the behavior of a model to behavior preservation rely basically on checking given models and their refactored versions. In this paper

  12. POSITIVITY PRESERVATION AND ADVECTION ALGORITHM TESTS FOR EDGE PLASMA TURBULENCE

    E-print Network

    Hammett, Greg

    POSITIVITY PRESERVATION AND ADVECTION ALGORITHM TESTS FOR EDGE PLASMA TURBULENCE J. L. PETERSON that are designed to minimize non-monotonic overshoots while preserving the accuracy of solutions at smooth extrema. Versions of these algorithms are able to rigorously preserve positivity when that is physically relevant

  13. Evaluating Preservation Strategies for Electronic Theses and Dissertations

    E-print Network

    Evaluating Preservation Strategies for Electronic Theses and Dissertations Stephan Strodl1), Pisa, Italy {franca.debole,giuseppe.amato}@isti.cnr.it Abstract Digital preservation has turned into a pressing challenge for institutions having the obligation to preserve digital objects over years. A range

  14. http://www.preserv.org.uk David Tarrant

    E-print Network

    Southampton, University of

    Workshop on the Use of Digital Object Repository Systems in Digital Libraries #12;About Preserv... How can we facilitate effective preservation survives for digital repositories? Preserv2 is a Project, not a service provider. 2nd European Workshop on the Use of Digital Object Repository Systems in Digital

  15. Cancer Biology

    ERIC Educational Resources Information Center

    Dominiecki, Mary E.

    2004-01-01

    University of Colorado's Virtual Student Fellowship available at and developed by Bakemeier, Richard F. This website is designed to give students applying for a fellowship an overview of basic topics in biology and how they are used by cancer researchers to develop new treatments.

  16. Biological Molecules

    NSDL National Science Digital Library

    Paul Anderson

    2013-03-12

    Paul Anderson describes the four major biological molecules found in living things. He begins with a brief discussion of polymerization. Dehydration synthesis is used to connect monomers into polymers and hydrolysis breaks them down again. The major characteristics of nucleic acids are described as well as there directionality from 3' to 5' end.

  17. Field Biology

    NSDL National Science Digital Library

    Course taught by Nancy Prentiss, University of Maine-Farmington, prentiss@maine.edu. Example compiled by Suzanne Savanick, Science Education Resource Center, ssavanic@carleton.edu.

    This field biology class uses a service-learning project instead of a course term paper. The students worked with 4th and 5th graders at a local school to teach them skills in wildflower and fern identification, and then to help them implement a nature trail, which will be accessible to the greater community.

  18. Biology Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1979

    1979-01-01

    Organized by topic is a reading list for A- and S-level biology. Described are experiments for measuring rate of water uptake in a shoot; questions to aid students in designing experiments; rise of overhead projection to demonstrate osmosis and blood cell counting; and microbial manufacture of vinegar. (CS)

  19. Marine biology

    Microsoft Academic Search

    H. V. Thurman; H. H. Webber

    1984-01-01

    This book discusses both taxonomic and ecological topics on marine biology. Full coverage of marine organisms of all five kingdoms is provided, along with interesting and thorough discussion of all major marine habitats. Organization into six major parts allows flexibility. It also provides insight into important topics such as disposal of nuclear waste at sea, the idea that life began

  20. Biology Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1981

    1981-01-01

    Presents content information and/or laboratory procedures and experiments on different biology topics including small-scale cultivation of watercress and its use in water-culture experiments, microbiology of the phylloplane, use of mouthbrooders in science class, and the gene. (DC)

  1. Bottle Biology.

    ERIC Educational Resources Information Center

    Jager, Peter

    1993-01-01

    Describes activities which utilize plastic drink bottles and are designed to foster the development of a wide range of biological and ecological concepts. Includes instructions for making a model compost column and presents a model that illustrates open versus closed ecosystems. (DDR)

  2. Biological Semiconductors

    Cancer.gov

    Fabrication using printing technologies of electrical percolation biological semiconductors (BSC) can facilitate assembly of numerous types of gates containing various ligands (e.g., antibodies, DNA, etc.) and can be used to assemble many of such gates on the same chip.

  3. Marine Biology

    ERIC Educational Resources Information Center

    Dewees, Christopher M.; Hooper, Jon K.

    1976-01-01

    A variety of informational material for a course in marine biology or oceanology at the secondary level is presented. Among the topics discussed are: food webs and pyramids, planktonic blooms, marine life, plankton nets, food chains, phytoplankton, zooplankton, larval plankton and filter feeders. (BT)

  4. 36 CFR 60.6 - Nominations by the State Historic Preservation Officer under approved State Historic Preservation...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 2012-07-01 false Nominations by the State Historic Preservation Officer under... NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL REGISTER OF HISTORIC PLACES § 60.6 Nominations by the State Historic Preservation Officer...

  5. 36 CFR 60.6 - Nominations by the State Historic Preservation Officer under approved State Historic Preservation...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 2014-07-01 false Nominations by the State Historic Preservation Officer under... NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL REGISTER OF HISTORIC PLACES § 60.6 Nominations by the State Historic Preservation Officer...

  6. 36 CFR 60.6 - Nominations by the State Historic Preservation Officer under approved State Historic Preservation...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 2013-07-01 false Nominations by the State Historic Preservation Officer under... NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL REGISTER OF HISTORIC PLACES § 60.6 Nominations by the State Historic Preservation Officer...

  7. Biological Warfare

    NSDL National Science Digital Library

    Sohmer, Rachel.

    2003-01-01

    The following Web sites offer reliable information resources addressing biological warfare and related issues. The first Web site, from the Mayo Clinic, provides a brief overview of the agents commonly used in biological and chemical warfare -- such as anthrax, tularemia, and ricin (1). Links to related Mayo or CDC Web pages are also provided for further information. The next site contains a collection of articles on bioterrorism and bioweapons from the science news magazine NewScientist, spanning a range of about 4 years (2). Geneticists have determined which genes code for virulence in anthrax bacteria; the online version of Scientific American offers a recent article on this discovery (3). The Genetics Learning Center at the Eccles Institute of Human Genetics (University of Utah) takes a look a common misconceptions about biological warfare and provides and interesting overview of biological warfare programs in the US and beyond (4). The site also introduces Dark Winter, a fictional smallpox attack scenario staged by a collaboration of research organizations in June of 2001. Readers can find out more about Dark Winter in the following Web site from the Center for Civilian Biodefense Studies at John Hopkins University, one of the participating organizations (5). Biosecurity and Bioterrorism, a recently launched quarterly peer-reviewed journal, may be accessed online for free (6). The journal offers "multidisciplinary analyses and a vigorous exchange of perspectives that are essential to the formulation and implementation of successful strategies to diminish the threat of bioweapons." The last two sites are from MEDLINEplus, offering detailed information and numerous links of biological (7) and chemical (8) warfare.

  8. Postdoc scholarship Computational Biology & Biological Physics

    E-print Network

    Jönsson, Henrik

    Postdoc scholarship Computational Biology & Biological Physics The Computational Biology & Biological Physics group at Lund University will host a Post doctoral fellow in the area of dynamical with experimental groups world- wide. Successful candidates should have a PhD in computational biology, physics

  9. Digital Creation & Preservation Working Group Activity Summary for (Prepared by Meghan Banach, Chair of Digital Creation & Preservation Working Group)

    E-print Network

    Schweik, Charles M.

    Digital Creation & Preservation Working Group Activity Summary for 2009-2010 (Prepared by Meghan Banach, Chair of Digital Creation & Preservation Working Group) The following report summarizes the Digital Creation & Preservation Working Group's (DCPWG) activities from June 2009 to the present and lists

  10. Open Source Initiative in Digital Preservation: The Need for an Open Source Digital Repository and Preservation System

    Microsoft Academic Search

    L Shanta Meitei; Purnima Devi

    The paper discusses the Open Source Software in digital preservation for digital repository and preservation system. The paper highlights the need and features of Open Source Software in Digital Preservation with the successful adoption of open source application for library and information management system in this global digital information environment. The paper also discusses some of the important Initiatives of

  11. Effect of various lubricants on corrosion resistance of steel ropes and on the resistance of organic cores to biological attack

    Microsoft Academic Search

    D. A. Kurashov; V. K. Barsukov; E. V. Barsukov; N. P. Kadochnikov; E. V. Makarova; F. G. Svidovskii; E. K. Gorbatov

    2008-01-01

    In order to ensure high quality and competitiveness of domestic electrical ropes and steel rope, the authors have developed\\u000a ASKM-1A, a new, highly effective biological corrosion resistant compound to replace copper naphthenate as a preservative for\\u000a impregnation of fibrous materials. This new preservative, used in much smaller doses than copper naphthenate, has improved\\u000a preservative properties, and is not hazardous to

  12. Optimization of preservatives in a topical formulation using experimental design.

    PubMed

    Rahali, Y; Pensé-Lhéritier, A-M; Mielcarek, C; Bensouda, Y

    2009-12-01

    Optimizing the preservative regime for a preparation requires the antimicrobial effectiveness of several preservative combinations to be determined. In this study, three preservatives were tested: benzoic acid, sorbic acid and benzylic alcohol. Their preservative effects were evaluated using the antimicrobial preservative efficacy test (challenge-test) of the European Pharmacopeia (EP). A D-optimal mixture design was used to provide a maximum of information from a limited number of experiments. The results of this study were analysed with the help of the Design Expert software and enabled us to formulate emulsions satisfying both requirements A and B of the EP. PMID:19627383

  13. Review: Heart failure with preserved ejection fraction in African Americans.

    PubMed

    Shah, Sachil

    2012-01-01

    Heart failure (HF) affects 5,700 000 people in the United States, with heart failure with preserved ejection fraction (HFPEF) being responsible for between 30%-50% of acute admissions. Epidemiological studies and HF registries have found HFPEF patients to be older, hypertensive and to have a history of atrial fibrillation. These findings, however, may not be fully applicable to African Americans, as they have been poorly studied making up only a minority of the test subjects. This review article is intended to discuss the pathophysiology and epidemiology of HFPEF within African Americans, highlight the differences compared to Caucasian populations and review current treatment guidelines. Studies looking at African Americans in particular have shown them to be younger, female and have worse diastolic dysfunction compared to Caucasian populations. African Americans also have been shown to have a worse mortality outcome especially in patients without coronary artery disease. The treatment of HFPEF is primarily symptomatic with no survival benefit seen in randomized controlled trials. Mechanisms postulated for the worse prognosis in African Americans with HFPEF include: greater incidence of hypertension and diastolic dysfunction, undefined race-driven genetic predispositions or relative resistance to medications that treat HF in general. The biological predispositions may also be compounded by inequality of healthcare access; something still felt to exist today. Prospective studies and randomized controlled trials need to be conducted with particular emphasis on African American populations to fully elucidate this disease and to formulate race specific treatment outcomes for the future. PMID:23140073

  14. Comparison of methods of preserving tissues for pesticide analysis.

    PubMed

    Stickel, W H; Stickel, L F; Dyrland, R A; Hughes, D L

    1984-06-01

    Formalin preservation, freezing, spoiling followed by freezing, and phenoxyethanol were compared in terms of concentrations of DDT, DDD, DDE, endrin, and heptachlor epoxide measured in brain, liver and carcass of birds fed dietary dosages of pesticides and in spiked egg homogenate. Phenoxyethanol proved to be an unsatisfactory preservative; the amount of 'extractable lipid' was excessive, and measurements of concentrations in replicates were erratic. Concentrations of residues in formalin-preserved and frozen samples did not differ significantly in any tissue. Percentage lipid in brains and eggs, however, were significantly lower in formalin-preserved samples. Samples of muscle and liver that had been spoiled before freezing yielded less DDD, and muscle samples yielded more DDT than formalin-preserved samples. We conclude that formalin preservation is a satisfactory method for preservation of field samples and that the warming and spoiling of samples that may occur unavoidably in the field will not result in misleading analytical results. PMID:24259216

  15. Biological Remediation

    NSDL National Science Digital Library

    Lee, Amy.

    This week's Topic In Depth focuses on the use of biological organisms to reduce environmental contamination.From the US Geological Survey, the first site (1) is a general introduction to bioremediation and includes links to several examples of successful bioremediation projects. Next (2) is a glossary of terms related to biological remediation. The third site is an educational resource (3) developed to teach high school students about environmental contamination and the use of plants to remove pollutants. The Bioremediation Discussion Group (4) includes a useful "archive of technical papers on bioremediation." The next two Web sites are specific to the process of phytoremediation, which uses plants to remediate contamination (5) (6 ). The next site (7) gives an example of an application using microbes from chicken compost to reduce air pollution. Lastly, this fact sheet (8) from the Ohio State University Extension Service focuses on bioremediation specific to wastewater treatment.

  16. Data Preservation, Information Preservation, and life-cyle of information management at NASA GES DISC

    NASA Astrophysics Data System (ADS)

    Khayat, M. G.; Deshong, B.; Esfandiari, A. E.; Gerasimov, I. V.; Johnson, J. E.; Kempler, S. J.; Wei, J. C.

    2014-12-01

    Data lifecycle management awareness is common today; planners are more likely to consider lifecycle issues at mission start. NASA remote sensing missions are typically subject to life cycle management plans of the Distributed Active Archive Center (DAAC), and NASA invests in these national centers for the long-term safeguarding and benefit of future generations. As stewards of older missions, it is incumbent upon us to ensure that a comprehensive enough set of information is being preserved to prevent the risk for "information loss". This risk is greater when the original data experts have moved on or are no longer available. Preservation of items like documentation related to processing algorithms, pre-flight calibration data, or input/output configuration parameters used in product generation, are examples of digital artifacts that are sometimes not fully preserved. This is the grey area of "information preservation"; the importance of these items is not always clear and requires careful consideration. Missing important "metadata" about intermediate steps used to derive a product could lead to serious challenges in the reproducibility of results or conclusions.Organizations are rapidly recognizing that the focus of life-cycle preservation needs to be enlarged from the strict raw data to the more encompassing arena of "information lifecycle management". By understanding what constitutes information, and the complexities involved, we are better equipped to deliver longer lasting value about the original data and derived knowledge (information) from them. The "NASA Earth Science Data Preservation Content Specification" is an attempt to define the content necessary for long-term preservation. It requires new lifecycle infrastructure approach along with content repositories to accommodate artifacts other than just raw data. The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) setup an open-source Preservation System capable of long-term archive of digital content to augment its raw data holding. This repository is being used for such missions as HIRDLS, UARS, TOMS, OMI, among others. We will provide a status of this implementation; report on challenges, lessons learned, and detail our plans for future evolution to include other missions and services.

  17. Classical biological control for the protection of natural ecosystems

    Technology Transfer Automated Retrieval System (TEKTRAN)

    We review the contribution, at a world level, of classical biological control of invasive insects and plants to the preservation of wildlands, including their biodiversity, their natural resources, and the ecosystems services that they provide. We include both older projects with demonstrated benef...

  18. Summary report on transverse emittance preservation

    SciTech Connect

    Chou, W.; Vos, L. [European Organization for Nuclear Research, Geneva (Switzerland)

    1997-12-01

    During the past years, significant progress has been made in understanding the beam transverse emittance blow-up and its preservation. However, one often finds him-/herself ignorant when he/she tries to explain what was observed in an existing machine or to predict what will happen in a machine under design. There are a number of such examples given in this report. Some of them are even fundamental. These are the challenges. But they are also the directions leading to new achievements. The workshop gladly acknowledged them and promised to work on them.

  19. Preserving Semantics in Automatically Created Ontology Alignments

    NASA Astrophysics Data System (ADS)

    Orsi, Giorgio; Tanca, Letizia

    In an open world such as the Internet, one of the most challenging tasks is ontology alignment, which is the process of finding relationships among their elements. Performing this work in an automated fashion is, however, subject to errors, because of the different semantics carried by the same concept in different application domains or because of different ontology design styles which often produce incompatible ontology structures. In this chapter, we relate the most important approaches to ontology mapping revision, proposing a revision technique which aims at preserving the semantics of the original ontologies.

  20. A wood preservative metabolite in river water.

    PubMed

    Khoroshko, Larisa O; Petrova, Varvara N; Viktorovskii, Igor V; Lahtiperä, Mirja; Sinkkonen, Seija; Paasivirta, Jaakko

    2005-01-01

    A previously unknown pollutant in river water was identified to be 2-mercaptobenzothiazole (2-MBT) by interpretation and simulation of its GC/LRMS spectrum. Further GC/HRMS measurement of the isotope composition of the molecular ion verified this structure. 2-MBT is a well-known agent for corrosion inhibition and a stable metabolite of several other benzothiazoles. The present 2-MBT trace was most probably a metabolite of the wood preservative TCMTB which leaked from an upstream sawmill. The metabolite had been detected earlier in urine of the sawmill workers, but now was identified in the recipient water environment for the first time. PMID:15768735

  1. Non-Markovian environments and entanglement preservation

    SciTech Connect

    Tan, Jackson; Kyaw, Thi Ha; Yeo, Ye [Department of Physics, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 (Singapore)

    2010-06-15

    Using the Shabani-Lidar post-Markovian master equation, we derive non-Markovian generalizations of important quantum decohering operations on single qubits. When environmental memory effects are being taken into account, both single-qubit coherence and two-qubit entanglement may be preserved over a longer period of time, in contrast to the corresponding situations where these are totally neglected. We argue that recognizing the fact that every environment is inherently non-Markovian could be the key to the resolution of the issue of entanglement sudden death.

  2. Accidental poisoning with biodiesel preservative biocide

    PubMed Central

    Aslanidis, T; Ourailoglou, V; Boultoukas, E; Giannakou-Peftoulidou, M

    2014-01-01

    Although biodiesel fuels’ use is getting more and more popular, there are only few reports in the literature of poisoning with such agents, and none referring to their preservatives: biocides. We present the management of a 49-year-old Caucasian male who was admitted, after accidental ingestion of biocide solution, in the intensive care unit of a tertiary hospital. In spite of his devastating condition upon arrival to the hospital, he had a remarkable recovery with no local or systemic sequel due to multidisciplinary and early supportive approach of his care. PMID:25336882

  3. Plasma Technology as a New Preservation Technique

    NASA Astrophysics Data System (ADS)

    Rincón, R.; Calzada, M. D.

    The preliminary results of using the surface wave discharge at the atmospheric pressure on groups of lentils and sherry Fino wine samples are presented. In this research, the capability of active species and UV radiation from the plasma, has been assessed on preservation of food. Besides, the generation and emission of both excited molecules in a metastable state N2}(B3? {g-> A3}? u{+) and the de-excitation of species NO(A2}? {+) producing UV radiation have been also studied.

  4. Groundwater remediation at a wood preservatives site

    SciTech Connect

    Mital, H.K.; Damera, R. [Tetra Tech, Inc., Christiana, DE (United States)

    1994-12-31

    A wood treatment facility in Pennsylvania allegedly discharged about a million gallons of spent wood preservatives containing pentachlorophenol into a well from 1947 to 1963. Contaminated water was noticed in a creek adjacent to the site and was reported by the residents in 1972. Subsequently this site was placed on the National Priorities List (NPL) by the EPA in 1982. Tetra Tech, Inc. has performed Remedial Investigations (RI), Feasibility Studies (FS), Remedial Designs (RD) and Remedial Action (RA) at this Superfund site, for five years. This paper presents an overview of RI, FS, RD and treatability studies related to groundwater remediation.

  5. Biological Sciences http://www.clas.wayne.edu/biology/

    E-print Network

    Berdichevsky, Victor

    Biological Sciences http://www.clas.wayne.edu/biology/ Divisions: Evolutionary and Organismal Biology Molecular Biology and Biotechnology Cellular, Developmental, and Neurobiology #12;Biological Sciences http://www.clas.wayne.edu/biology/ · Cell Biology and Cytogenetics (Beningo, Tucker, Greenberg

  6. Page 64 Biology Sonoma State University 2014-2015 Catalog DEPARTMENT OFFICE

    E-print Network

    Ravikumar, B.

    , conservation biology, evolutionary biology, botany and zoology. We are nationally recognized for our programs and Galbreath Wildlands Preserve, administered by Sonoma State University. In addition, the department maintains, recreation, conservation and restoration. Gradu- ates from the department have an outstanding record

  7. Biological Diversity of the Guiana Shield: Georeferencing Plants of the Guiana Shield

    E-print Network

    Mathis, Wayne N.

    Biological Diversity of the Guiana Shield: Georeferencing Plants of the Guiana Shield Eduardo To document, understand, and conserve the biological diversity of the shield area. #12;#12;What does · Expeditions (collect) · Preserve · Process · Identify · Inventory · Barcode · File in collection (At home

  8. Developing biological resource banks as a supporting tool for wildlife reproduction and conservation

    Microsoft Academic Search

    Trinidad Leon-Quinto; Miguel A. Simon; Rafael Cadenas; Jonathan Jones; Francisco J. Martinez-Hernandez; Juan M. Moreno; Astrid Vargas; Fernando Martinez; Bernat Soria

    2009-01-01

    This work presents a Biological Resource Bank generated as a complementary supporting tool for the reproduction and the in situ and ex situ conservation of the Iberian lynx. In its design we prioritized the preservation of a maximum of the current genetic and biological diversity of the population, and the harmless collection of the samples. To provide future reproductive opportunities

  9. 24 CFR 248.121 - Annual authorized return and aggregate preservation rents.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...Annual authorized return and aggregate preservation rents. 248...MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT...Annual authorized return and aggregate preservation rents. (a...preservation equity. (b) Aggregate preservation rents....

  10. 13 CFR 107.600 - General requirement for Licensee to maintain and preserve records.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...requirement for Licensee to maintain and preserve records. 107.600 Section 107...requirement for Licensee to maintain and preserve records. (a) Maintaining your accounting...preservation period. (1) You must preserve for at least 15 years or, in the...

  11. 13 CFR 107.600 - General requirement for Licensee to maintain and preserve records.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...requirement for Licensee to maintain and preserve records. 107.600 Section 107...requirement for Licensee to maintain and preserve records. (a) Maintaining your accounting...preservation period. (1) You must preserve for at least 15 years or, in the...

  12. 13 CFR 107.600 - General requirement for Licensee to maintain and preserve records.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...requirement for Licensee to maintain and preserve records. 107.600 Section 107...requirement for Licensee to maintain and preserve records. (a) Maintaining your accounting...preservation period. (1) You must preserve for at least 15 years or, in the...

  13. Cinelectures for Introductory Biology

    NSDL National Science Digital Library

    David Marcey

    Cinelectures for Introductory Biology is a YouTube channel containing a series of online, cinematic lectures covering basic chemistry for biology, metabolism, cell biology, genetics, and molecular biology. Many of these cinelectures incorporate videos, illustrations, and animations.

  14. Fishery Biology Graduate Programs

    E-print Network

    Fishery Biology Graduate Programs University of Alaska Fairbanks, Alaska 997750820 Program: Fisheries Biology, Marine Biology, Oceanography http://www.sfos.uaf.edu:8000/academics State University Fort Collins, Colorado 805230015 Programs: Fishery Biology http

  15. Bioinformatics & Computational Biology

    E-print Network

    Richner, Heinz

    Bioinformatics & Computational Biology Master of Science in Bioinformatics and Computational Biology (90 ECTS) Contact Information Programme administration Bioinformatics and Computational Biology.unifr.ch/msc Programme administration Bioinformatics and Computational Biology University of Bern Baltzerstrasse 6 CH

  16. Creating biological nanomaterials using synthetic biology

    NASA Astrophysics Data System (ADS)

    Rice, MaryJoe K.; Ruder, Warren C.

    2014-02-01

    Synthetic biology is a new discipline that combines science and engineering approaches to precisely control biological networks. These signaling networks are especially important in fields such as biomedicine and biochemical engineering. Additionally, biological networks can also be critical to the production of naturally occurring biological nanomaterials, and as a result, synthetic biology holds tremendous potential in creating new materials. This review introduces the field of synthetic biology, discusses how biological systems naturally produce materials, and then presents examples and strategies for incorporating synthetic biology approaches in the development of new materials. In particular, strategies for using synthetic biology to produce both organic and inorganic nanomaterials are discussed. Ultimately, synthetic biology holds the potential to dramatically impact biological materials science with significant potential applications in medical systems.

  17. Preservation and fermentation: past, present and future.

    PubMed

    Ross, R Paul; Morgan, S; Hill, C

    2002-11-15

    Preservation of food and beverages resulting from fermentation has been an effective form of extending the shelf-life of foods for millennia. Traditionally, foods were preserved through naturally occurring fermentations, however, modern large scale production generally now exploits the use of defined strain starter systems to ensure consistency and quality in the final product. This review will mainly focus on the use of lactic acid bacteria (LAB) for food improvement, given their extensive application in a wide range of fermented foods. These microorganisms can produce a wide variety of antagonistic primary and secondary metabolites including organic acids, diacetyl, CO2 and even antibiotics such as reuterocyclin produced by Lactobacillus reuteri. In addition, members of the group can also produce a wide range of bacteriocins, some of which have activity against food pathogens such as Listeria monocytogenes and Clostridium botulinum. Indeed, the bacteriocin nisin has been used as an effective biopreservative in some dairy products for decades, while a number of more recently discovered bacteriocins, such as lacticin 3147, demonstrate increasing potential in a number of food applications. Both of these lactococcal bacteriocins belong to the lantibiotic family of posttranslationally modified bacteriocins that contain lanthionine, beta-methyllanthionine and dehydrated amino acids. The exploitation of such naturally produced antagonists holds tremendous potential for extension of shelf-life and improvement of safety of a variety of foods. PMID:12382680

  18. Endothelium Preserving Microwave Treatment for Atherosclerois

    NASA Technical Reports Server (NTRS)

    Carl, James R. (Inventor); Arndt, G. Dickey (Inventor); Fink, Patrick W. (Inventor); Beer, N. Reginald (Inventor); Henry, Phillip D. (Inventor); Pacifico, Antonio (Inventor); Raffoul, George W. (Inventor)

    2001-01-01

    Method and apparatus are provided to treat atherosclerosis wherein the artery is partially closed by dilating the artery while preserving the vital and sensitive endothelial layer thereof. Microwave energy having a frequency from 3 GHz to 300 GHz is propagated into the arterial wall to produce a desired temperature profile therein at tissue depths sufficient for thermally necrosing connective tissue and softening fatty and waxy plaque while limiting heating of surrounding tissues including the endothelial layer and/or other healthy tissue, organs, and blood. The heating period for raising the temperature a potentially desired amount about 20 C, with the atherosclerotic lesion may be less than about one second. In one embodiment of the invention, a radically beveled waveguide antenna is used to deliver microwave energy at frequencies from 25 GHz or 30 GHz to about 300 GHz and is focused towards a particular radical sector of the artery. Because the atherosclerotic lesions are often asymmetrically disposed, directable or focussed heating preserves healthy sectors of the artery and applies energy to the asymmetrically positioned lesion faster than a non-directed beam. A computer simulation predicts isothermic temperature profiles for the given conditions and may be used in selecting power, pulse duration, beam width, and frequency of operation to maximize energy deposition and control heat rise within the atherosclerotic lesion without harming healthy tissues or the sensitive endothelium cells.

  19. Endothelium Preserving Microwave Treatment for Atherosclerosis

    NASA Technical Reports Server (NTRS)

    Carl, James R. (Inventor); Arndt, G. Dickey (Inventor); Fink, Patrick W. (Inventor); Beer, N. Reginald (Inventor); Henry, Phillip D. (Inventor); Pacifico, Antonio (Inventor); Raffoul, George W. (Inventor)

    2001-01-01

    Method and apparatus are provided to treat atherosclerosis wherein the artery is partially closed by dilating the artery while preserving the vital and sensitive endothelial layer thereof. Microwave energy having a frequency from 3 GHz to 300 GHz is propagated into the arterial wall to produce a desired temperature profile therein at tissue depths sufficient for thermally necrosing connective tissue and softening fatty and waxy plaque while limiting heating of surrounding tissues including the endothelial layer and/or other healthy tissue, organs, and blood. The heating period for raising the temperature a potentially desired amount, about 20 C. within the atherosclerotic lesion may be less than about one second. In one embodiment of the invention, a radically beveled waveguide antenna is used to deliver microwave energy at frequencies from 25 GHz or 30 GHz to about 300 GHz and is focused towards a particular radial sector of the artery. Because the atherosclerotic lesions are often asymmetrically disposed directable or focussed heating preserves healthy sectors of the artery and applies energy to the asymmetrically positioned lesion faster than a non-directed beam. A computer simulation predicts isothermic temperature profiles for the given conditions and may be used in selecting power, pulse duration, beam width, and frequency of operation to maximize energy deposition and control heat rise within the atherosclerotic lesion without harming healthy tissues or the sensitive endothelium cells.

  20. Endothelium Preserving Microwave Treatment for Atherosclerosis

    NASA Technical Reports Server (NTRS)

    Carl, James R. (Inventor); Arndt, G. Dickey (Inventor); Fink, Patrick W. (Inventor); Beer, N. Reginald (Inventor); Henry, Phillip D. (Inventor); Pacifico, Antonio (Inventor); Raffoul, George W. (Inventor)

    2000-01-01

    Method and apparatus are provided to treat atherosclerosis wherein the artery is partially closed by dilating the artery while preserving the vital and sensitive endothelial layer thereof Microwave energy having a frequency from 3 GHz to 300 GHz is propagated into the arterial wall to produce a desired temperature profile therein at tissue depths sufficient for thermally necrosing connective tissue and softening fatty and waxy plaque while limiting heating of surrounding tissues including the endothelial laser and/or other healthy tissue, organs, and blood. The heating period for raising the temperature a potentially desired amount, about 20 C., within the atherosclerotic lesion may be less than about one second. In one embodiment of the invention, a radically beveled waveguide antenna is used to deliver microwave energy at frequencies from 25 GHz or 30 GHz to about 300 GHz and is focused towards a particular radial sector of the artery. Because the atherosclerotic lesions are often asymmetrically disposed, directable of focussed heating preserves healthy sectors of the artery and applies energy to the asymmetrically positioned lesion faster than a non-directed beam. A computer simulation predicts isothermic temperature profiles for the given conditions and man be used in selecting power, pulse duration, beam width, and frequency of operation to maximize energy deposition and control heat rise within the atherosclerotic lesion without harming healthy tissues or the sensitive endothelium cells.

  1. Doushantuo embryos preserved inside diapause egg cysts.

    PubMed

    Yin, Leiming; Zhu, Maoyan; Knoll, Andrew H; Yuan, Xunlai; Zhang, Junming; Hu, Jie

    2007-04-01

    Phosphatized microfossils in the Ediacaran (635-542 Myr ago) Doushantuo Formation, south China, have been interpreted as the embryos of early animals. Despite experimental demonstration that embryos can be preserved, microstructural evidence that the Doushantuo remains are embryonic and an unambiguous record of fossil embryos in Lower Cambrian rocks, questions about the phylogenetic relationships of these fossils remain. Most recently, some researchers have proposed that Doushantuo microfossils may be giant sulphur-oxidizing bacteria comparable to extant Thiomargarita sp. Here we report new observations that provide a test of the bacterial hypothesis. The discovery of embryo-like Doushantuo fossils inside large, highly ornamented organic vesicles (acritarchs) indicates that these organisms were eukaryotic, and most probably early cleavage stage embryos preserved within diapause egg cysts. Large acanthomorphic microfossils of the type observed to contain fossil embryos first appear in rocks just above a 632.5 +/- 0.5-Myr-old ash bed, suggesting that at least stem-group animals inhabited shallow seas in the immediate aftermath of global Neoproterozoic glaciation. PMID:17410174

  2. Heart Failure With Preserved Ejection Fraction.

    PubMed

    Rogers, Felix J; Gundala, Teja; Ramos, Jahir E; Serajian, Asif

    2015-07-01

    Heart failure with preserved ejection fraction (HFpEF) is a complex clinical condition. Initially called diastolic heart failure, it soon became clear that this condition is more than the opposite side of systolic heart failure. It is increasingly prevalent and lethal. Currently, HFpEF represents more than 50% of heart failure cases and shares a 90-day mortality and readmission rate similar to heart failure with reduced ejection fraction. Heart failure with preserved ejection fraction is best considered to be a systemic disease. From a cardiovascular standpoint, it is not just a stiff ventricle. A stiff ventricle combined with a stiff arterial and venous system account for the clinical manifestations of flash pulmonary edema and the marked changes in renal function or systemic blood pressure with minor changes in fluid volume status. No effective pharmacologic treatments are available for patients with HFpEF, but an approach to the musculoskeletal system has merit: the functional limitations and exercise intolerance that patients experience are largely due to abnormalities of peripheral vascular function and skeletal muscle dysfunction. Regular exercise training has strong objective evidence to support its use to improve quality of life and functional capacity for patients with HFpEF. This clinical review summarizes the current evidence on the pathophysiologic aspects, diagnosis, and management of HFpEF. PMID:26111131

  3. Preservation of Microbial Lipids in Geothermal Sinters

    NASA Astrophysics Data System (ADS)

    Kaur, Gurpreet; Mountain, Bruce W.; Hopmans, Ellen C.; Pancost, Richard D.

    2011-04-01

    Lipid biomarkers are widely used to study the earliest life on Earth and have been invoked as potential astrobiological markers, but few studies have assessed their survival and persistence in geothermal settings. Here, we investigate lipid preservation in active and inactive geothermal silica sinters, with ages of up to 900 years, from Champagne Pool, Waiotapu, New Zealand. Analyses revealed a wide range of bacterial biomarkers, including free and bound fatty acids, 1,2-di-O-alkylglycerols (diethers), and various hopanoids. Dominant archaeal lipids include archaeol and glycerol dialkyl glycerol tetraethers (GDGTs). The predominance of generally similar biomarker groups in all sinters suggests a stable microbial community throughout Champagne Pool's history and indicates that incorporated lipids can be well preserved. Moreover, subtle differences in lipid distributions suggest that past changes in environmental conditions can be elucidated. In this case, higher archaeol abundances relative to the bacterial diethers, a greater proportion of cyclic GDGTs, the high average chain length of the bacterial diethers, and greater concentrations of hopanoic acids in the older sinters all suggest hotter conditions at Champagne Pool in the past.

  4. Nested Krylov methods and preserving the orthogonality

    NASA Technical Reports Server (NTRS)

    Desturler, Eric; Fokkema, Diederik R.

    1993-01-01

    Recently the GMRESR inner-outer iteraction scheme for the solution of linear systems of equations was proposed by Van der Vorst and Vuik. Similar methods have been proposed by Axelsson and Vassilevski and Saad (FGMRES). The outer iteration is GCR, which minimizes the residual over a given set of direction vectors. The inner iteration is GMRES, which at each step computes a new direction vector by approximately solving the residual equation. However, the optimality of the approximation over the space of outer search directions is ignored in the inner GMRES iteration. This leads to suboptimal corrections to the solution in the outer iteration, as components of the outer iteration directions may reenter in the inner iteration process. Therefore we propose to preserve the orthogonality relations of GCR in the inner GMRES iteration. This gives optimal corrections; however, it involves working with a singular, non-symmetric operator. We will discuss some important properties, and we will show by experiments that, in terms of matrix vector products, this modification (almost) always leads to better convergence. However, because we do more orthogonalizations, it does not always give an improved performance in CPU-time. Furthermore, we will discuss efficient implementations as well as the truncation possibilities of the outer GCR process. The experimental results indicate that for such methods it is advantageous to preserve the orthogonality in the inner iteration. Of course we can also use iteration schemes other than GMRES as the inner method; methods with short recurrences like GICGSTAB are of interest.

  5. Carbonaceous preservation of Cambrian hexactinellid sponge spicules

    PubMed Central

    Harvey, Thomas H. P.

    2010-01-01

    Early fossil sponges offer a direct window onto the evolutionary emergence of animals, but insights are limited by the paucity of characters preserved in the conventional fossil record. Here, a new preservational mode for sponge spicules is reported from the lower Cambrian Forteau Formation (Newfoundland, Canada), prompting a re-examination of proposed homologies and sponge inter-relationships. The spicules occur as wholly carbonaceous films, and are interpreted as the remains of robust organic spicule sheaths. Comparable sheaths are restricted among living taxa to calcarean sponges, although the symmetries of the fossil spicules are characteristic of hexactinellid sponges. A similar extinct character combination has been documented in the Burgess Shale fossil Eiffelia. Interpreting the shared characters as homologous implies complex patterns of spicule evolution, but an alternative interpretation as convergent autapomorphies is more parsimonious. In light of the mutually exclusive distributions of these same characters among the crown groups, this result suggests that sponges exhibited an early episode of disparity expansion followed by comparatively constrained evolution, a pattern shared with many other metazoans but obscured by the conventional fossil record of sponges. PMID:20554559

  6. Germplasm Preservation of Vegetatively-propagated Crops at the National Center for Genetic Resources Preservation

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Out of 476,049 germplasm accessions maintained by the USDA, ARS, National Plant Germplasm System (NPS), ca. 30,000 are vegetatively-propagated and as such require preservation as non seed propagules. Numerous research reports have demonstrated the advantages of long-term storage of plant tissues in ...

  7. Rethinking Preservation Validation with the Preserved Object and Repository Risks Ontology (PORRO)

    E-print Network

    Lalmas, Mounia

    mounia@acm.org ABSTRACT For securing digital longevity, the processes of preservation planning of organisation, tech- nology and priorities. A more holistic and warranted un- derstanding of the relationships- lihood of risk impact silos and making explicit organisational and informational relationships

  8. To preserve or not to preserve the orbit in paranasal sinus neoplasms: a meta-analysis.

    PubMed

    Reyes, Camilo; Mason, Eric; Solares, C Arturo; Bush, Carrie; Carrau, Ricardo

    2015-03-01

    Context?The effect on survival of orbital evisceration on patients with paranasal sinus neoplasms has not been well established. Objective?To review systematically the available literature concerning survival in patients who undergo surgery for paranasal sinus neoplasm with and without preservation of the eye. Data Source?A retrospective meta-analysis of English and non-English articles using Medline and the Cochrane database. Eligibility Criteria?Studies analyzing 5-year survival rates in patients who had orbital evisceration compared with orbital preservation for the treatment of paranasal sinus neoplasms were included in the final analysis. Data Extraction?Independent review by two authors using predefined data fields. Data Synthesis?A meta-analysis of four articles involving 443 patients was performed using the DerSimonian-Laird random-effects method. Results?Our analysis revealed a total effect size of 0.964 in favor of preservation of the eye; however, these results are not robust, having a true effect size anywhere from 0.785 to 1.142 with a 95% confidence interval. Limitations?Only retrospective observational studies were included because a prospective randomized study cannot be performed in this population. Conclusion?Our study supports the notion that in select patients preservation of the eye may yield a different outcome when compared with orbital evisceration. PMID:25844298

  9. So Easy to Preserve Hands on Canning and Lecture Course Home food preservation is making a comeback! If you are not confident about what to do with your

    E-print Network

    Watson, Craig A.

    So Easy to Preserve ­ Hands on Canning and Lecture Course Home food preservation is making participating in the course So Easy to Preserve! Sign up now and learn up-to-date food preservation procedures to Preserve (if you own the 5th edition book, only a $5.00 materials fee is required) You may register

  10. Biological ESTEEM

    NSDL National Science Digital Library

    Jungck, John R.

    Introducing students to different software packages and applications for use in biology and math courses can be quite a challenge. With that in mind, teachers in these areas will definitely appreciate this rather helpful site from the people at the Mathematical Sciences Digital Library. These particular simulations and tools draw heavily on Microsoft Excel, so users will need to make sure that they also have this program installed. Visitors can click on the "Resources By Category" to access modules that deal with chemical equations in biochemistry, protein analysis, biodiversity, and island biogeography. It is worth noting that other subjects are covered here, including genetics, epidemiology, and ecology.

  11. Simulating Biological and Non-Biological Motion

    ERIC Educational Resources Information Center

    Bruzzo, Angela; Gesierich, Benno; Wohlschlager, Andreas

    2008-01-01

    It is widely accepted that the brain processes biological and non-biological movements in distinct neural circuits. Biological motion, in contrast to non-biological motion, refers to active movements of living beings. Aim of our experiment was to investigate the mechanisms underlying mental simulation of these two movement types. Subjects had to…

  12. Biological Literacy in a College Biology Classroom.

    ERIC Educational Resources Information Center

    Demastes, Sherry; Wandersee, James H.

    1992-01-01

    Examines the proposed definition of biological literacy as the understanding of a small number of pervasive biological principles appropriate to making informed personal and societal decisions. Utilizes the content of a major daily newspaper to adjust biology instruction to focus on this notion of biological literacy. Discusses benefits and…

  13. Lipid Rafts in Mast Cell Biology

    PubMed Central

    Silveira e Souza, Adriana Maria Mariano; Mazucato, Vivian Marino; Jamur, Maria Célia; Oliver, Constance

    2011-01-01

    Mast cells have long been recognized to have a direct and critical role in allergic and inflammatory reactions. In allergic diseases, these cells exert both local and systemic responses, including allergic rhinitis and anaphylaxis. Mast cell mediators are also related to many chronic inflammatory conditions. Besides the roles in pathological conditions, the biological functions of mast cells include roles in innate immunity, involvement in host defense mechanisms against parasites, immunomodulation of the immune system, tissue repair, and angiogenesis. Despite their growing significance in physiological and pathological conditions, much still remains to be learned about mast cell biology. This paper presents evidence that lipid rafts or raft components modulate many of the biological processes in mast cells, such as degranulation and endocytosis, play a role in mast cell development and recruitment, and contribute to the overall preservation of mast cell structure and organization. PMID:21490812

  14. APPLICATION OF TRADESCANTIA MICRONUCLEUS ASSAY FOR IN SITU EVALUATION OF POTENTIAL GENETIC HAZARDS FROM EXPOSURE TO CHEMICALS AT A WOOD PRESERVING SITE

    EPA Science Inventory

    In situ evaluation of biological hazards from wood preserving chemicals at a hazardous waste site using the Tradescantia micronucleus assay (Trad-MCN) is reported in this study. he chemical analysis of soil samples from the site showed high contamination with arsenic (1,292 mg/kg...

  15. Protecting endangered species under future climate change: From single-species preservation to an anticipatory policy approach

    NASA Astrophysics Data System (ADS)

    Bloomgarden, Carol A.

    1995-09-01

    Anthropogenic climate climate change presents a unique challenge for endangered species policy and an opportunity for policy makers to develop a more predictive and robust approach to preserving the nation's biological resources. Biological and ecological reactions to shifting climate conditions and the potential feedbacks and synergistic effects of such changes may threaten the well-being of many species, particularly of those already in jeopardy of extinction. The United States Endangered Species Act of 1973 will fail to keep pace with increasing numbers of species needing protection as long as it remains focused on protecting species individually. The act must not be abandoned, however; it holds tremendous promise for preserving biological diversity through a more proactive, anticipatory perspective. The current Endangered Species Act should be reinforced and improved by better integration of scientific expertise into habitat and community preservation listing decisions and recovery plan devlopment. Given the uncertainties surrounding long-term environmental consequences of human activities and resource use, a longer-term perspective must be integrated into all efforts to protect our biotic resources.

  16. Preserving Plutonium-244 as a National Asset

    SciTech Connect

    Patton, Bradley D [ORNL; Alexander, Charles W [ORNL; Benker, Dennis [ORNL; Collins, Emory D [ORNL; Romano, Catherine E [ORNL; Wham, Robert M [ORNL

    2011-01-01

    Plutonium-244 (244 Pu) is an extremely rare and long-lived isotope of plutonium with a half-life of 80 million years. Measureable amounts of 244 Pu are found in neither reactor-grade nor weapons-grade plutonium. Production of this isotope requires a very high thermal flux to permit the two successive neutron captures that convert 242 Pu to 243 Pu to 244 Pu, particularly given the short (about 5 hour) half-life of 243 Pu. Such conditions simply do not exist in plutonium production processes. Therefore, 244 Pu is ideal for precise radiochemical analyses measuring plutonium material properties and isotopic concentrations in items containing plutonium. Isotope dilution mass spectrometry is about ten times more sensitive when using 244 Pu rather than 242 Pu for determining plutonium isotopic content. The isotope can also be irradiated in small quantities to produce superheavy elements. The majority of the existing global inventory of 244 Pu is contained in the outer housing of Mark-18A targets at the Savannah River Site (SRS). The total inventory is about 20 grams of 244 Pu in about 400 grams of plutonium distributed among the 65 targets. Currently, there are no specific plans to preserve these targets. Although the cost of separating and preserving this material would be considerable, it is trivial in comparison to new production costs. For all practical purposes, the material is irreplaceable, because new production would cost billions of dollars and require a series of irradiation and chemical separation cycles spanning up to 50 years. This paper will discuss a set of options for overcoming the significant challenges to preserve the 244 Pu as a National Asset: (1) the need to relocate the material from SRS in a timely manner, (2) the need to reduce the volume of material to the extent possible for storage, and (3) the need to establish an operational capability to enrich the 244 Pu in significant quantities. This paper suggests that if all the Mark-18A plutonium is separated, it would occupy a small volume and would be inexpensive to store while an enrichment capability is developed. Very small quantities could be enriched in existing mass separators to support critical needs.

  17. The study on privacy preserving data mining for information security

    NASA Astrophysics Data System (ADS)

    Li, Xiaohui

    2012-04-01

    Privacy preserving data mining have a rapid development in a short year. But it still faces many challenges in the future. Firstly, the level of privacy has different definitions in different filed. Therefore, the measure of privacy preserving data mining technology protecting private information is not the same. So, it's an urgent issue to present a unified privacy definition and measure. Secondly, the most of research in privacy preserving data mining is presently confined to the theory study.

  18. The Use of Irreversible Electroporation in Food Preservation

    Microsoft Academic Search

    Alex Golberg; Judith Fischer; Boris Rubinsky

    The need for food preservation has faced mankind since ancient times. Food preservation technologies have evolved as a result\\u000a of the progression of human knowledge. The more knowledge we have about the environment we live in, the more sophisticated\\u000a tools we develop to control it. Any significant breakthrough in physics and engineering has resulted in the improvement of\\u000a food preservation

  19. Measure preserving systems 1.1 Lebesgue spaces

    E-print Network

    Katznelson, Yitzhak

    Chapter I Measure preserving systems 1.1 Lebesgue spaces 1.1.1 Let X,B,µ be a finite measure space preserving systems Theorem. Let X,B,µ be a Lebesgue space and assume that µ is continuous (nonatomic,D, is a closed subspace of L2 X,B,µ , hence separable. 1.2 Measure preserving actions. 1.2.1 DEFINITION

  20. Hyperboloid preservation implies the Lorentz and Poincaré groups without dilations

    E-print Network

    Stephan Foldes

    2010-09-20

    An analogue of the Alexandrov-Zeeman theorem, based on hyperboloid preservation, as opposed to light cone preservation, is provided. This characterizes exactly the Poincar\\'e group, as opposed to the Poincar\\'e group extended by dilations. The hyperbolic analogue, as opposed to the cone-based Alexandrov-Zeeman theorem, is also valid in the case of a single space dimension. An orthochronous version also holds, based on the preservation of forward hyperboloid shells.