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  • 1
    Electronic Resource
    Electronic Resource
    A bounded N-tuplewise independent and identically distributed counterexample to the CLT (1998)
    Springer
    Probability theory and related fields 111 (1998), S. 323-332 
    Details
    ISSN: 1432-2064
    Keywords: Mathematics Subject Classification (1991): 60F0S
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary. A sequence of random variables X 1,X 2,X 3,… is said to be N-tuplewise independent if X i 1,X i 2,…,X i N are independent whenever (i 1,i 2,…,i N ) is an N-tuple of distinct positive integers. For any fixed N∈ℤ+, we construct a sequence of bounded identically distributed N-tuplewise independent random variables which fail to satisfy the central limit theorem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004400050170
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  • 2
    Electronic Resource
    Electronic Resource
    Selection of an Aquatic Indicator Species to Monitor Organic Contaminants in Trophically Simple Lotic Food Webs (1998)
    Springer
    Archives of environmental contamination and toxicology 35 (1998), S. 565-572 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. A four-step procedure was used to identify an aquatic macroinvertebrate with which to monitor organic contaminant burdens in trophically simple lake food webs of Alberta, Canada. We identified leeches (Oligochaeta: Hirudinea) as the potential indicator assemblage (Step 1), and then documented their abundance and distribution in 16 lakes to identify a species-level bioindicator (Step 2). The latter two steps involved identifying the number and level of organic contaminants within the indicator species (Step 3) and a comparison with other taxa within the food web (Step 4).  The majority of lakes within the watershed contained seven to nine leech species with individuals of Nephelopsis obscura being one of the most abundant and widely distributed species that is sufficiently large to allow for rapid collection of sufficient biomass for organic contaminant analyses. Concentrations of organic contaminants in leeches from 22 sites and in sediments (two lakes) within the watershed were low, and in the majority of cases less than analytical detection levels (i.e., 0.05 μg/kg wet weight). Nevertheless, leech tissues contained trace amounts of a fungicide (i.e., hexachlorobenzene) and four pesticides including: pp′-DDE, pp′-DDD, representing intermediate and final breakdown products of pp′-DDT, a-HCH (i.e., hexachlorocyclohexane) and g-HCH (Lindane). Concentrations of these contaminants did not differ significantly between leeches collected from lakes within a national park compared to areas outside the park that may have been more vulnerable to loadings of contaminants from industrial and agricultural sources.  Lastly, we compared organic contaminant concentrations in N. obscura with Gammarus lacustris and Brook's stickleback, Culaea inconstans (Gasterosteidae). Organic contaminant concentrations in N. obscura were similar or higher than those present in G. lacustris and C. inconstans. Eight organic contaminants were found in N. obscura, whereas, C. inconstans and G. lacustris contained only three and four, respectively. The fact that N. obscura typically contained higher concentrations and greater numbers of detectable compounds suggest that it is a suitable indicator of organic contamination. While current levels of organic contaminants in the Beaver Hills watershed are low, despite the intense agriculture and industrial activities, they should be monitored to act as an early warning indicator of ecosystem degradation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002449900417
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  • 3
    Electronic Resource
    Electronic Resource
    Introduction and expression of the bacterial glyoxylate cycle genes in transgenic mice (1996)
    Springer
    Transgenic research 5 (1996), S. 467-473 
    Details
    ISSN: 1573-9368
    Keywords: glyoxylate cycle ; isocitrate lysae ; malate synthase ; microinjection ; transgenic mice ; expression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The glyoxylate cycle, catalysed by two unique enzymes: isocitrate lyase (ICL; EC 4.1.3.1) and malate synthase (MS; EC 4.1.3.2), is necessary for the net conversion of acetate into glucose. This metabolic pathway operates in microorganisms, higher plants and nematodes. Two bacterial genes, encoding ICL and MS, were modified in order to introduce them into the mouse germ line. The ovine metallothionein-Ia (MT-Ia) promoter-aceB gene-ovine growth hormone (GH) gene (3′ GH sequence) construct was fused to the ovine MT-Ia promoter-aceA gene-ovine GH gene (3′ GH sequence). Therefore, in this single DNA sequence, bothaceA andaceB are under independent MT-Ia promoter control and can be induced by zinc. Transgenic mice were generated by pronuclear microinjection of theaceB-aceA gene construct. We now report the establishment of four mouse lines carying these two transgenes. Studies on the progeny of these lines indicate that one line (No. 91) is expressing both genes at the mRNA and enzyme levels in the liver and intestine, whereas another line (No. 66) has a much lower expression. Both enzyme activities were detected in the liver and intestine at levels up to 25% of those measured in fully derepressedEscherichia coli cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01980212
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  • 4
    Electronic Resource
    Electronic Resource
    Remarks on summability of series formed from deviation probabilities of sums of independent identically distributed random variables (1996)
    Springer
    Ukrainian mathematical journal 48 (1996), S. 569-572 
    Details
    ISSN: 1573-9376
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Description / Table of Contents: Abstract Одержано результати, що уточнюють недавню роботу О. І. Кльосова (1993) про зв'язок між збіжністю $$\sum\nolimits_{n = 1}^\infty {\tau _n P(|S_n | \geqslant \varepsilon n^\alpha )} $$ для всіх ɛ〉0 і збіжністю $$\sum\nolimits_{n = 1}^\infty {n\tau _n P(|X_1 | \geqslant \varepsilon n^\alpha )} $$ також для всіх ɛ〉0.
    Notes: Abstract We make some remarks leading to a refinement of the recent work of O. I. Klesov (1993) on the connection between the convergence of $$\sum\nolimits_{n = 1}^\infty {\tau _n P(|S_n | \geqslant \varepsilon n^\alpha )} $$ for every ɛ〉0 and that of $$\sum\nolimits_{n = 1}^\infty {n\tau _n P(|X_1 | \geqslant \varepsilon n^\alpha )} $$ again for every ɛ〉0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02390624
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  • 5
    Electronic Resource
    Electronic Resource
    Radial rearrangement, harmonic measures and extensions of Beurling's shove theorem (1999)
    Springer
    Arkiv för matematik 37 (1999), S. 183-210 
    Details
    ISSN: 1871-2487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract LetI be a union of finitely many closed intervals in [−1, 0). LetI ↞ be a single interval of the form [−1, −a] chosen to have the same logarithmic length asI. LetD be the unit disc. Then, Beurling [8] has shown that the harmonic measure of the circle ∂D at the origin in the slit discD/I is increased ifI is replaced byI ↞. We prove a number of cognate results and extensions. For instance, we show that Beurling's result remains true if the intervals inI are not just one-dimensional, but if they in fact constitute polar rectangles centred on the negative real axis and having some fixed constant angular width. In doing this, we obtain a new proof of Beurling's result. We also discuss a conjecture of Matheson and Pruss [25] and some other open problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02384833
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  • 6
    Electronic Resource
    Electronic Resource
    54. Neue Internationale Standard-Zustandsgleichung für Wasser zum allgemeinen und wissenschaftlichen Gebrauch (1996)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 68 (1996), S. 1100-1101 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330680956
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  • 7
    Electronic Resource
    Electronic Resource
    Nucleosomal anatomy - where are the histones? (1995)
    New York, NY : Wiley-Blackwell
    BioEssays 17 (1995), S. 161-170 
    Details
    ISSN: 0265-9247
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The recent surge of discoveries concerning the structural organization of nucleosomes, together with genetic evidence of highly specialized roles for the histones in gene regulation, have brought a renewed need for a detailed understanding of nucleosomal anatomy. Here we review recent structural advances leading to a new level of understanding of the nucleosome and chromatin fibre structure. We discuss the problems and challenges for existing models of chromatin structure and, in particular, consider how linker histones may bind within the nucleosome, together with the implications of their association for the structure of the chromatin fibre.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bies.950170211
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  • 8
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    A viral suppressor of gene silencing in plants (1998)
    National Academy of Sciences
    Details
    Publication Date: 1998-10-27
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 9
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    A bounded N -tuplewise independent and identically distributed counterexample to the CLT (1998)
    Springer
    Details
    Publication Date: 1998-07-31
    Print ISSN: 0178-8051
    Electronic ISSN: 1432-2064
    Topics: Mathematics
    Published by Springer
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  • 10
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    An asymmetric model for the nucleosome: a binding site for linker histones inside the DNA gyres (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-10-25
    Description: Histone-DNA contacts within a nucleosome influence the function of trans-acting factors and the molecular machines required to activate the transcription process. The internal architecture of a positioned nucleosome has now been probed with the use of photoactivatable cross-linking reagents to determine the placement of histones along the DNA molecule. A model for the nucleosome is proposed in which the winged-helix domain of the linker histone is asymmetrically located inside the gyres of DNA that also wrap around the core histones. This domain extends the path of the protein superhelix to one side of the core particle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pruss, D -- Bartholomew, B -- Persinger, J -- Hayes, J -- Arents, G -- Moudrianakis, E N -- Wolffe, A P -- New York, N.Y. -- Science. 1996 Oct 25;274(5287):614-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892-2710, USA. awlme@helix.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8849453" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Cross-Linking Reagents ; DNA/*chemistry/metabolism ; Histones/*chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Nucleosomes/*chemistry ; Protein Conformation ; Protein Structure, Secondary ; RNA, Ribosomal/genetics ; Recombinant Proteins/chemistry ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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