Bibliographies thématiques / BIOLOGICAL ELEMENTS

Littérature scientifique sur le sujet « BIOLOGICAL ELEMENTS »

Auteur : Grafiati
Publié le 11 septembre 2023

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Articles de revues sur le sujet "BIOLOGICAL ELEMENTS"

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Vogel, John S., Jeffrey McAninch et Stewart P. H. T. Freeman. « Elements in biological AMS ». Nuclear Instruments and Methods in Physics Research Section B : Beam Interactions with Materials and Atoms 123, no 1-4 (mars 1997) : 241–44. http://dx.doi.org/10.1016/s0168-583x(96)00679-9.

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Williams, D. F. « Biological chemistry of the elements ». Biomaterials 15, no 3 (février 1994) : 239. http://dx.doi.org/10.1016/0142-9612(94)90073-6.

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Paschal, Dan. « Biological monitoring of toxic elements ». Journal of Chemical Health and Safety 15, no 6 (novembre 2008) : 8–13. http://dx.doi.org/10.1016/j.jchas.2007.10.001.

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ANDERSON, CHARLES H. « BASIC ELEMENTS OF BIOLOGICAL COMPUTATIONAL SYSTEMS ». International Journal of Modern Physics C 05, no 02 (avril 1994) : 313–15. http://dx.doi.org/10.1142/s0129183194000386.

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This paper explores some basic representational and implementation issues arising from the premise that cortical circuits operate on probability density functions to reason about analog quantities. Some insight is provided into why neurobiological systems can appear messy, while at the same time provide a rich and robust computational environment.
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Exley, Christopher. « The biological chemistry of the elements ». Trends in Biochemical Sciences 17, no 4 (avril 1992) : 165. http://dx.doi.org/10.1016/0968-0004(92)90327-6.

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Kazantzis, George. « The biological alkylation of heavy elements ». Food and Chemical Toxicology 27, no 8 (janvier 1989) : 550. http://dx.doi.org/10.1016/0278-6915(89)90055-0.

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Hickman, Carole S. « Biological Diversity : Elements of a Paleontological Agenda ». PALAIOS 8, no 4 (août 1993) : 309. http://dx.doi.org/10.2307/3515262.

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YAMANE, Yasuhiro. « Role of micro elements in biological systems. » Japanese Journal of Health Physics 25, no 3 (1990) : 269–77. http://dx.doi.org/10.5453/jhps.25.269.

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Haidamus, Susana Linhares, Maria Cristina Affonso Lorenzon et Ortrud Monika Barth. « Biological Elements and Residues in Brazilian Honeys ». Greener Journal of Biological Sciences 9, no 1 (12 mars 2019) : 8–14. http://dx.doi.org/10.15580/gjbs.2019.1.022119038.

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Pu, Wangyang, Rong Zhang, Huifen Xu et Bin Liu. « Biological and Diagnostic Implications of Alu Elements ». Gene and Gene Editing 1, no 1 (1 mars 2015) : 16–25. http://dx.doi.org/10.1166/gge.2015.1003.

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Thèses sur le sujet "BIOLOGICAL ELEMENTS"

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Turcu, Eugen Florin. « Micropatterning and microelectrochemical characterisation of biological recognition elements ». [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973183624.

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Casuso, Páramo Ignacio. « Electrical Characterization of Biological Elements by Atomic Force Microscopy ». Doctoral thesis, Universitat de Barcelona, 2008. http://hdl.handle.net/10803/1519.

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The assessment of the electrical properties of biomolecules at the nanoscale becomes necessary for gathering previous basic knowledge and for the control of the biosensor fabrication. I developed instrumentation, protocols, and theoretical frameworks for the nanoscale electrical characterization of biomolecules by AFM. Two novel types of AFM electrical characterizations were developed: electron transport through the biomolecules and dielectric polarization of the biomolecules (each one requires different instrumentation, protocols and theory). I succeeded in obtaining important electrical information on individual biomolecules with implications in electrical biosensor fabrication.

KEY WORDS: AFM, Protein, Electrical, Biosensor
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Winkler, Wade C. « RNA elements required for T box antitermination ». The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1381251178.

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GRANT, TYRE D. « ASSESSING THE ENVIRONMENTAL AND BIOLOGICAL IMPLICATIONS OF VARIOUS ELEMENTS THROUGH ELEMENTAL SPECIATION USING INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY ». University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085590907.

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Worrasettapong, Watcharapong. « Ultratrace analysis and speciation studies on trace elements in environmental and biological samples ». Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269381.

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Hutchinson, Robert William. « Measurement of proteins and elements in biological samples by inductively coupled plasma mass spectrometry ». Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505564.

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Tetreault, Hannah M. « Transposable element contribution and biological consequence of genome size variation among wild sunflower species ». Diss., Kansas State University, 2016. http://hdl.handle.net/2097/32897.

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Doctor of Philosophy
Division of Biology
Mark C. Ungerer
Nuclear genome size varies immensely across flowering plants, spanning nearly 2400-fold. The causes and consequences of this vast amount of variation have intrigued biologists since it became clear that nuclear DNA amount did not reflect organismal complexity (the so-called C-value paradox). In my dissertation I utilize wild sunflower species in the genus Helianthus to examine the role of transposable elements (TEs), and in particular, long terminal repeat (LTR) retrotransposons, in generating genome size variation and whether variation in genome size influences aspects of plant growth and development across multiple organizational levels. The genus Helianthus provides an excellent system for studying these questions given four-fold variation in nuclear DNA content among diploid species and well-resolved phylogenetic relationships. Utilizing short-read Illumina data and sequence information from a diverse panel of Helianthus annuus (common sunflower) full-length LTR retrotransposons, I found that nuclear genome size in Helianthus species is positively correlated with repetitive DNA, and LTR retrotransposon subtypes generally show similar patterns in genomic abundance across taxa. Helianthus species with the largest genomes, however, exhibit large-scale amplification of a small number of LTR retrotransposon subtypes. Measuring aspects of plant growth and development at cell-, organ- and whole plant-levels in a panel of diploid Helianthus species that vary 4-fold in nuclear genome size, I found that genome size is negatively correlated with cell production rate, but that this negative correlation does not persist at higher organizational levels. Taken together, these results provide insights into the mechanisms contributing to genome size evolution in plants and the organizational level at which genome size may impact growth patterns and developmental rates. Genome expansion in wild sunflowers is influenced most significantly by amplification of a small number of TEs and not necessarily by a greater diversity of TEs. Genome size is strongly negatively correlated with cell production rate but this relationship weakens at higher organizational levels, such as that of organ and whole-plant development.
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Yu, Liwen Schwartz Martin. « Computational studies on Group 14 elements (C, Si and Ge) in organometallic and biological compounds ». [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3591.

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Yu, Liwen. « Computational Studies on Group 14 Elements (C, Si and Ge) in Organometallic and Biological Compounds ». Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3591/.

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A series of computational studies were carried out on Group 14 (C, Si and Ge) elements in organometallic and biological compounds. Theoretical studies on classical and H-bridged A3H3+ (A=C, Si and Ge) as p ligands with different organometallic fragments at B3LYP and B3P86 level reveal a reverse charge transfer from ligand to metal in Si and Ge complexes whereas in C complexes there is a small charge transfer from metal to ligand. The H-bridged complexes are more stable than the complexes based on Si3H3+ and Ge3H3+ ligands with terminal hydrogens. The stability of the bridged systems increases from Si to Ge. Corrective scale factors for computed harmonic CºO vibrational frequencies for 31 organometallic complexes have been determined at the HF and B3LYP levels. The scaled B3LYP frequencies exhibit a greater reliability than do HF frequencies. Experimental data have shown that Si/Ge-substituted decapeptides are advantageous over their C analog in vitro and in vivo studies in modern hormone therapy. A computational investigation was carried out on the synthesized decapeptides focusing on position 5 containing Si and Ge. The results have shown that there are some differences in C, Si and Ge-containing analogs. However, further investigations are needed to elucidate the observed advantages of Si/Ge over C analogs.
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Roberts, Sabrina B. « The roles of Correia Repeat Enclosed Elements in regulation of gene expression in the Neisseria spp ». Thesis, Kingston University, 2017. http://eprints.kingston.ac.uk/41954/.

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In February 2017, the World Health organization published a list of 12 antibiotic-resistant "priority pathogens" that pose the greatest threat to human health. Amongst these, in the high priority group was 'Neisseria gonorrhoea'. When considering 'N. meningitdis' the highest rates of incidence are seen in infants with peak seen in adolescents and the elderly in some countries. CREE have been indentified near virulence and metabolic genes as well being present in the pathogenic 'Neisseria' species. It was therefore seen as an interesting area to undertake gene expression research. To look at the transcriptome and effective method of RNA extraction needed to be considered. Experiments found that the Qiagen RNeasy kit was the most successful kit to extract RNA from cultures of 'N. gonorrhoeae' and 'N. meningitidis'. This research, in the assessment of the transcriptome, has demonstrated that the presence of CREE is associated with the presence on ncRNAs in the genome. CREE locations in the neisserial genomes are frequently found near or overlapping SIPHT predicted ncRNAs. The transcriptome has also shown that CREE can invert at its location with the potential to impact gene expression. Research set out in this thesis has set the ground work for some interesting areas to be taken up for further investigation.
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Livres sur le sujet "BIOLOGICAL ELEMENTS"

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Holum, John R. Elements of general and biological chemistry. 8e éd. New York : J. Wiley, 1991.

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Holum, John R. Elements of general and biological chemistry. 7e éd. New York : Wiley, 1987.

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R, Holum John, dir. Elements of general, organic, and biological chemistry. 9e éd. New York : Wiley, 1995.

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Boikess, Robert S. Elements of chemistry : General, organic, and biological. Englewood Cliffs, N.J : Prentice-Hall, 1986.

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Holum, John R. Elements of general, organic, and biological chemistry. 9e éd. New York : Wiley, 1995.

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1944-, Subramanian K. S., Iyengar G. V, Okamoto Kensaku et International Chemical Congress of Pacific Basin Societies (1989 : Honolulu, Hawaii), dir. Biological trace element research : Multidisciplinary perspectives. Washington, DC : American Chemical Society, 1991.

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Deborah, Charlesworth, dir. Elements of evolutionary genetics. Greenwood Village, Colo : Roberts, 2011.

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Iyengar, G. V. Elemental analysis of biological systems. Boca Raton, Fla : CRC Press, 1989.

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M, Herber R. F., et Stoeppler M. 1927-, dir. Trace element analysis in biological specimens. Amsterdam [The Netherlands] : Elsevier, 1994.

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Uzunov, Jordan Ivanov. Mesta river : Biological quality elements and ecological status. Sofia : Professor Marin Drinov Academic Publishing House, 2013.

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Chapitres de livres sur le sujet "BIOLOGICAL ELEMENTS"

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Eggins, Brian R. « Biological Elements ». Dans Teubner Studienbücher Chemie, 13–30. Wiesbaden : Vieweg+Teubner Verlag, 1996. http://dx.doi.org/10.1007/978-3-663-05664-5_2.

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Nordberg, Monica, et M. George Cherian. « Biological Responses of Elements ». Dans Essentials of Medical Geology, 195–214. Dordrecht : Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4375-5_9.

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Rietdorf, Jens, et Ernst H. K. Stelzer. « Special Optical Elements ». Dans Handbook Of Biological Confocal Microscopy, 43–58. Boston, MA : Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-45524-2_3.

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Yuan, Ting, et Shiping Wang. « Pathogen-Responsive cis-Elements ». Dans Plant Defence : Biological Control, 363–78. Dordrecht : Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1933-0_16.

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Zumpe, Doris, et Richard P. Michael. « Biological Rhythms ». Dans Notes on the Elements of Behavioral Science, 99–116. Boston, MA : Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1239-4_7.

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Kiefer, Jürgen. « Elements of Photo- and Radiation Chemistry ». Dans Biological Radiation Effects, 88–103. Berlin, Heidelberg : Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83769-2_5.

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Subramanian, K. S. « Trace Elements in Biological Fluids ». Dans Biological Trace Element Research, 130–57. Washington, DC : American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0445.ch011.

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Fränzle, Stefan. « The Biological System of Elements ». Dans Chemical Elements in Plant and Soil : Parameters Controlling Essentiality, 1–15. Dordrecht : Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2752-8_1.

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Lindh, Ulf. « Biological Functions of the Elements ». Dans Essentials of Medical Geology, 129–77. Dordrecht : Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4375-5_7.

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Stone, Susan F., Rolf Zeisler, Glen E. Gordon, Raphael P. Viscidi et Erich H. Cerny. « Trace Elements Associated with Proteins ». Dans Biological Trace Element Research, 265–77. Washington, DC : American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0445.ch021.

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Actes de conférences sur le sujet "BIOLOGICAL ELEMENTS"

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Bouhadjar, Younes, Markus Diesmann, Dirk J. Wouters et Tom Tetzlaff. « The speed of sequence processing in biological neuronal networks ». Dans NICE '20 : Neuro-inspired Computational Elements Workshop. New York, NY, USA : ACM, 2020. http://dx.doi.org/10.1145/3381755.3381769.

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Baer, Wolfgang, et Rita Pizzi. « The case for biological quantum computer elements ». Dans SPIE Defense, Security, and Sensing, sous la direction de Eric J. Donkor, Andrew R. Pirich et Howard E. Brandt. SPIE, 2009. http://dx.doi.org/10.1117/12.818218.

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Kaneko, Kunihiko. « Network of Chaotic Elements ». Dans Nonlinear Dynamics in Optical Systems. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nldos.1992.thc1.

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Network of globally coupled chaotic elements is important not only as a model for nonlinear systems with many degrees of freedom, but also from the viewpoint of biological information processing and possible engineering applications.
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Maas, Steve A., Benjamin J. Ellis, David S. Rawlins et Jeffrey A. Weiss. « Finite Element Modeling of Joint Contact Mechanics With Quadratic Tetrahedral Elements ». Dans ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14556.

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Tetrahedral elements are one of the most popular finite element (FE) modeling primitives for complex, biological geometries, partially due to the availability of automatic meshing schemes for creating tetrahedral meshes. However, constant strain tetrahedral elements require a very fine mesh to obtain accurate solutions, and these elements can lock, yielding overly stiff results [1].
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Schroer, Christian G., Johannes Tuemmler, Til F. Guenzler, Bruno Lengeler, Walter H. Schroeder, Arnd J. Kuhn, Alexandre S. Simionovici, Anatoly A. Snigirev et Irina Snigireva. « Fluorescence microtomography : external mapping of elements inside biological samples ». Dans International Symposium on Optical Science and Technology, sous la direction de F. P. Doty, H. Bradford Barber, Hans Roehrig et Edward J. Morton. SPIE, 2000. http://dx.doi.org/10.1117/12.410573.

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Ushenko, Y. A., O. V. Dubolazov, A. O. Karachevtcev et N. I. Zabolotna. « The Mueller-matrix elements characteristic values of biological tissues ». Dans International Conference on Applications of Optics and Photonics, sous la direction de Manuel F. Costa. SPIE, 2011. http://dx.doi.org/10.1117/12.891514.

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Ferraro, P., V. Bianco, M. Paturzo, L. Miccio, P. Memmolo, F. Merola et V. Marchesano. « Biological elements carry out optical tasks in coherent imaging systems ». Dans SPIE BiOS, sous la direction de Thomas G. Bifano, Joel Kubby et Sylvain Gigan. SPIE, 2016. http://dx.doi.org/10.1117/12.2210939.

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Mišianiková, Anna, Katarína Kimáková et Andrea Lešková. « IMPLEMENTATION OF INTERDISCIPLINARY ELEMENTS IN BIOLOGICAL EDUCATION AT SECONDARY SCHOOL ». Dans 13th International Conference on Education and New Learning Technologies. IATED, 2021. http://dx.doi.org/10.21125/edulearn.2021.1422.

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Zhang, Yue, Chongyu Zhang, Da Guo, Xiaojun Huang, Junfa Xue et Jianming Ouyang. « Concentrations of Trace Elements in Different Types of Gallstones and Their Effects on Gallstone Formation ». Dans International Conference on Biomedical and Biological Engineering. Paris, France : Atlantis Press, 2016. http://dx.doi.org/10.2991/bbe-16.2016.51.

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Kiel, Johnathan L., Jill E. Parker, Eric A. Holwitt et Jeeva Vivekananda. « DNA capture elements for rapid detection and identification of biological agents ». Dans Defense and Security, sous la direction de Patrick J. Gardner. SPIE, 2004. http://dx.doi.org/10.1117/12.532043.

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Rapports d'organisations sur le sujet "BIOLOGICAL ELEMENTS"

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Hackett, Kevin, Shlomo Rottem, David L. Williamson et Meir Klein. Spiroplasmas as Biological Control Agents of Insect Pests. United States Department of Agriculture, juillet 1995. http://dx.doi.org/10.32747/1995.7613017.bard.

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Toward development of spiroplasmas as novel toxin-delivery systems for biocontrol of beetle pests in the United States (Leptinotarsa decemlineata) and Israel (Maladera matrida), media for cultivating beetle-associated spiroplasmas were improved and surveys of these spiroplasmas were conducted to provide transformable strains. Extensive surveys of spiroplasmas yielded promising extrachromosomal elements for vector constructs. One, plasmid pCT-1, was cloned, characterized, and used as a source of spiroplasma origin of replication in our shuttle vectors. The fibrillin gene was isolated and sequenced and its strong promoter was also used in the constructs. Means for transforming these vectors into spiroplasmas were developed and optimized, with electroporation found to be suitable for most applications. Development and optimization of means for using large unilamellar vesicles (LUVs) in spiroplasma transformation represents a breakthrough that should facilitate insertion of large clusters of virulence genes. With completion of the vector, we should thus be poised to genetically engineer spiroplasmas with genes that will express toxins lethal to our target beetles, thus providing an effective and inexpensive alternative to conventional means of beetle control.
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Mathews, Teresa J., William J. Rogers, Rock Vitale, John G. Smith, Craig C. Brandt, Mark J. Peterson et Neil Carriker. Interlaboratory Comparison for Digestion Methods, Analytical Methods, and Holding Times for the Analysis of Trace Elements in Biological Samples for the Kingston Fly Ash Recovery Project. Office of Scientific and Technical Information (OSTI), mai 2013. http://dx.doi.org/10.2172/1126954.

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Gurevitz, Michael, Michael E. Adams et Boaz Shaanan. Structural Elements and Neuropharmacological Features Involved in the Insecticidal Properties of an Alpha Scorpion Neurotoxin : A Multidisciplinary Approach. United States Department of Agriculture, août 1995. http://dx.doi.org/10.32747/1995.7573061.bard.

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Integrated pest management in modern crop protection requires the use of chemical or biological insecticides in many instances. Nontheless, the use non-selective chemical insecticides poses risks to the environment and livestock and consequently urgent need exists for safer alternatives, which target insects more specifically. Scorpions produce anti-insect selective polypeptide toxins that are biodegradable and not toxic to wam-blooded animals. Therefore, mobilization of these substances into insect pest targets is of major interest. Moreover, clarification of the molecular basis of this selectivity may provide valuable information pertinent to their receptor sites and to the future design of peptidomimetic anti-insect specific substances. These toxins may also be important for reducing the current overuse of chamical insecticides provided they have a synergistic effect with conventional pesticides. All of these objectives were addressed in this research. A direct approach for plant protection was the mobilization of toxins into target pests using baculoviral vectors. The other approach was to develop a suitable system enabling the elucidation of the toxin bioactive site, which would enable design of insecticidal peptidomimetics. In parallel, the mode of action and synergistic effects of scorpion insecticidal toxins, were studied at the sodium channel receptor site. All the above approaches show great promise and clearly indicate that scorpion insecticidal toxins may provide powerful means in insect pest control.
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Walsh, Margaret, Peter Backlund, Lawrence Buja, Arthur DeGaetano, Rachel Melnick, Linda Prokopy, Eugene Takle, Dennis Todey et Lewis Ziska. Climate Indicators for Agriculture. United States. Department of Agriculture. Climate Change Program Office, juillet 2020. http://dx.doi.org/10.32747/2020.7201760.ch.

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The Climate Indicators for Agriculture report presents 20 indicators of climate change, carefully selected across multiple agricultural production types and food system elements in the United States. Together, they represent an overall view of how climate change is influencing U.S. agriculture and food systems. Individually, they provide useful information to support management decisions for a variety of crop and livestock production systems. The report includes multiple categories of indicators, including physical indicators (e.g., temperature, precipitation), crop and livestock (e.g., animal heat stress), biological indicators (e.g., pests), phenological indicators (e.g. seasonality), and socioeconomic indicators (e.g., total factor productivity).
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Galbraith, Mel, et Dan Blanchon. Biology is not Alone : The Interdisciplinary Nature of Biosecurity. Unitec ePress, septembre 2015. http://dx.doi.org/10.34074/pibs.rs12015.

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Recognition and management of anthropogenic environmental impacts as ‘biosecurity’ is a relatively new concept to our society. Although biosecurity risks are based on biological impacts, biosecurity management is truly interdisciplinary-transdisciplinary since the definition and interpretation of risk and adverse effects are socially constructed, and the outcomes and management of the risks can have significant social and economic impacts. The New Zealand biosecurity strategy is very clear that the responsibilities for environmental risk management lie with society as a whole. The authors explore how disciplines other than biology may contribute to the understanding of biosecurity risks, their management and mitigation. This paper outlines the interdisciplinary-transdisciplinary nature of biosecurity, with an emphasis on the social and economic elements.
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Buesseler, Ken O., Di Jin, Melina Kourantidou, David S. Levin, Kilaparti Ramakrishna et Philip Renaud. The ocean twilight zone’s role in climate change. Woods Hole Oceanographic Institution, février 2022. http://dx.doi.org/10.1575/1912/28074.

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The ocean twilight zone (more formally known as the mesopelagic zone) plays a fundamental role in global climate. It is the mid-ocean region roughly 100 to 1000 meters below the surface, encompassing a half-mile deep belt of water that spans more than two-thirds of our planet. The top of the ocean twilight zone only receives 1% of incident sunlight and the bottom level is void of sunlight. Life in the ocean twilight zone helps to transport billions of metric tons (gigatonnes) of carbon annually from the upper ocean into the deep sea, due in part to processes known as the biological carbon pump. Once carbon moves below roughly 1000 meters depth in the ocean, it can remain out of the atmosphere for centuries to millennia. Without the benefits of the biological carbon pump, the atmospheric CO 2 concentration would increase by approximately 200 ppm 1 which would significantly amplify the negative effects of climate change that the world is currently trying to curtail and reverse. Unfortunately, existing scientific knowledge about this vast zone of the ocean, such as how chemical elements flow through its living systems and the physical environment, is extremely limited, jeopardizing the efforts to improve climate predictions and to inform fisheries management and ocean policy development.
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Basis, Najwa, et Tamar Shochat. Associations between religion and sleep : A systematic review of observational studies in the adult population. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, juillet 2022. http://dx.doi.org/10.37766/inplasy2022.7.0057.

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Review question / Objective: The aim of this systematic review is to investigate observational studies on the association between religion and sleep in the adult population. To this end, the proposed systematic review will address the following question: What is the role religion plays in shaping an individual's sleep health? Condition being studied: Sleep is a fundamental biological process increasingly recognized as a critical indicator of development and overall health. Generally, insufficient sleep is associated with depressed mood, daytime fatigue, poor daytime functioning and daytime sleepiness, increased risk of cancer, cardiovascular problems, diabetes, and the cause of the higher risk of mortality. Furthermore, changes in sleep architecture and quality have been related to cognitive deterioration, including dementia and Alzheimer's disease. Here we will identify the role of religion in elements of sleep health, to include sleep duration and sleep quality, and associated health outcomes in the adult population.
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Asvapathanagul, Pitiporn, Simone Galano, Andrea Calabrese, Mehran Rahmani, Maggie Ly, Daniela Flores, Michael Hernandez et Nicholas Banuelos. Experimental Investigation of the Self-Healing Potential of Bacteria for Sustainable Concrete Structures. Mineta Transportation Institute, mai 2023. http://dx.doi.org/10.31979/mti.2023.2239.

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Although concrete is the most widely used building material in the world, its limited tensile strength makes cracking a common phenomenon in concrete elements. This study investigates the potential of autonomous self-healing as an eco-friendly and lowcost method to increase the durability of concrete. The crack-healing potential of different types of high-alkaline-tolerant bacteria or calcite-precipitation microorganisms is investigated. High-alkaline-tolerant bacteria and calcite-precipitation microorganisms were used to retrofit lab-fractured concrete samples. The samples healed with each of these bacteria groups were cast and tested under compressive load up to failure to measure the compressive strength of the concrete samples. The outcomes of experimental tests on concrete samples healed with biological processes demonstrate how this technique can be implemented when retrofitting durability-enhanced, eco-friendly concrete structures to improve the strength of durability of the material and ultimately improve the durability of many forms of concrete infrastructure.
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Shmulevich, Itzhak, Shrini Upadhyaya, Dror Rubinstein, Zvika Asaf et Jeffrey P. Mitchell. Developing Simulation Tool for the Prediction of Cohesive Behavior Agricultural Materials Using Discrete Element Modeling. United States Department of Agriculture, octobre 2011. http://dx.doi.org/10.32747/2011.7697108.bard.

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The underlying similarity between soils, grains, fertilizers, concentrated animal feed, pellets, and mixtures is that they are all granular materials used in agriculture. Modeling such materials is a complex process due to the spatial variability of such media, the origin of the material (natural or biological), the nonlinearity of these materials, the contact phenomenon and flow that occur at the interface zone and between these granular materials, as well as the dynamic effect of the interaction process. The lack of a tool for studying such materials has limited the understanding of the phenomena relevant to them, which in turn has led to energy loss and poor quality products. The objective of this study was to develop a reliable prediction simulation tool for cohesive agricultural particle materials using Discrete Element Modeling (DEM). The specific objectives of this study were (1) to develop and verify a 3D cohesionless agricultural soil-tillage tool interaction model that enables the prediction of displacement and flow in the soil media, as well as forces acting on various tillage tools, using the discrete element method; (2) to develop a micro model for the DEM formulation by creating a cohesive contact model based on liquid bridge forces for various agriculture materials; (3) to extend the model to include both plastic and cohesive behavior of various materials, such as grain and soil structures (e.g., compaction level), textures (e.g., clay, loam, several grains), and moisture contents; (4) to develop a method to obtain the parameters for the cohesion contact model to represent specific materials. A DEM model was developed that can represent both plastic and cohesive behavior of soil. Soil cohesive behavior was achieved by considering tensile force between elements. The developed DEM model well represented the effect of wedge shape on soil behavior and reaction force. Laboratory test results showed that wedge penetration resistance in highly compacted soil was two times greater than that in low compacted soil, whereas DEM simulation with parameters obtained from the test of low compacted soil could not simply be extended to that of high compacted soil. The modified model took into account soil failure strength that could be changed with soil compaction. A three dimensional representation composed of normal displacement, shear failure strength and tensile failure strength was proposed to design mechanical properties between elements. The model based on the liquid bridge theory. An inter particle tension force measurement tool was developed and calibrated A comprehensive study of the parameters of the contact model for the DEM taking into account the cohesive/water-bridge was performed on various agricultural grains using this measurement tool. The modified DEM model was compared and validated against the test results. With the newly developed model and procedure for determination of DEM parameters, we could reproduce the high compacted soil behavior and reaction forces both qualitatively and quantitatively for the soil conditions and wedge shapes used in this study. Moreover, the effect of wedge shape on soil behavior and reaction force was well represented with the same parameters. During the research we made use of the commercial PFC3D to analyze soil tillage implements. An investigation was made of three different head drillers. A comparison of three commonly used soil tillage systems was completed, such as moldboard plow, disc plow and chisel plow. It can be concluded that the soil condition after plowing by the specific implement can be predicted by the DEM model. The chisel plow is the most economic tool for increasing soil porosity. The moldboard is the best tool for soil manipulation. It can be concluded that the discrete element simulation can be used as a reliable engineering tool for soil-implement interaction quantitatively and qualitatively.
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Gladney, E. S., B. T. O'Malley, I. Roelandts et T. E. Gills. Compilation of elemental concentration data for NBS clinical, biological, geological, and environmental Standard Reference Materials. Gaithersburg, MD : National Institute of Standards and Technology, novembre 1987. http://dx.doi.org/10.6028/nbs.sp.260-111.

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