patterns of benthic algae in aquatic ecosystems

... primarily of inorganic material and have an organic carbon content of only some % or less However, some of this organic content can be in the form of thin organic coatings on the mineral substrates In ... accumulation of such chemicals in microlayers may be an important step in the release of PTOCs to the atmosphere or in their bioaccumulation by certain organisms The role of sediments The fate of PTOCs in ... volatilized/or degraded, is in bottom sediments Bottom sediments of lakes and impoundments are often major sinks and sites of eventual burial of PTOCs Distribution patterns of PTOCs in lake bottom sediments...

Ngày tải lên: 22/03/2014, 14:20

... consumption, of which household expenditure is an official proxy Main purpose of this paper is investigating determinants of household consumption Other factors in supply side including price, inflation, ... problem of intra-household resource allocation Keep other things being fixed, an increase in household member induces increases in want and need, which in turn push consumption up Hence, introducing ... analysis of household consumption including highlighting major features of household consumption, rationing and formulating econometric model, describing data, presenting and interpreting empirical...

Ngày tải lên: 04/04/2013, 17:15

... overseeing either degraded and/or pristine ecosystems, will profit from a deeper understanding of the role that EFAs play in maintaining the health and ecological integrity of aquatic ecosystems ... of endogenous phosphorus in the algae, which might be used to maintain normal synthesis of phosphoglycerides in these photobionts (Guschina et al 2003) In a study of seven species of marine algae ... content of 16:0 was 52% in the chilling-sensitive strain and 36% in the chilling-resistant strain The content of 16:1(3trans) at the sn-2 position of PG was 8% in the chilling-sensitive and 16% in...

Ngày tải lên: 17/02/2014, 19:20

... be of interest because in terms of function, the fish intestine is highly regionalized both in the larva and in the adult [38] The posterior segment of the fish intestine is the absorption site of ... routing of PrPSc in the early steps of infection Our observations of a prp2 hybridization signal in the posterior intestine of zebrafish larvae call for evaluation of the potential prions uptake of ... the coding sequence contained within exon A coding sequence of 1701 bp, from an ATG codon at position 71 of the cDNA to a stop codon starting at position 1772 was contained in a single exon of 3782...

Ngày tải lên: 19/02/2014, 16:20

... of the combined process of the feeding rate, which is based on the bioenergetics of organism weight W (kg) and temperature T (8C), and of the diffusion rate of the chemical across the intestinal ... Potential of Organic Chemicals in Aquatic Food Webs derivation of a trophic dilution factor for a group of PAHs In this example, the model is fitted to available BCF and BAF data, resulting in a kM of ... process of bioaccumulation is described in more detail in recent reviews [7, 21] Model Development: Bioaccumulation is the result of competing processes of chemical uptake into and chemical elimination...

Ngày tải lên: 22/03/2014, 14:20

... Although proportions of MDR patterns are not at a threatening level, proportions of monoR and anyR patterns are very high, necessitating closer monitoring of the treatment outcomes of individual patients ... evaluated Resistance modes and patterns were determined Drug resistance patterns in tuberculosis in proportional quantities using the numbers of resistant cases as denominator in this analysis Statistical ... possible combinations and proportions of H, R, S and E and four resistant modes, i.e mono, double, triple and quadruple resistance instead of notifying the incidence of plain resistance rates, in the...

Ngày tải lên: 29/03/2014, 03:20

... on inter-provincial migration destinations in South Africa: province of origin A3 MNA results on inter-provincial migration destinations in South Africa: type of ... the beginning of the migration-defining period Then there are those who had moved away but returned within the specified interval to the area in which they had been living at the beginning of the ... along with the ability of the individual to utilise this information, comes the question of the inclination of the individual to take advantage of the information’ (1981:78) In the contemporary...

Ngày tải lên: 29/03/2014, 04:20

... Cataloguing in Publication Data Data available Library of Congress Cataloging in Publication Data Data available Typeset by Newgen Imaging Systems (P) Ltd., Chennai, India Printed in Great Britain ... the threshold of stability of these structures, resulting in catastrophic drainage For example, the break-up of the Ward Hunt Ice Shelf in 2002 resulted in complete drainage and loss of an epishelf ... heating of the water column to exceed the maximum density of water at 3.98C, and the lakes remain free-mixing throughout summer (cold monomictic) Increased warming will result in the crossing of...

Ngày tải lên: 29/03/2014, 17:20

... Committee of the West China University Medical School Page of Exposure Assessment The factory was established in 1950 Since the 1970s some engineering control measures were in place, but in most ... studies, finding excess obstruction among asbestos exposed workers, but remaining inconclusive as to how much of the effect is independent from smoking Kilburn reported significant differences in FEV1/FVC ... long period of time Therefore, the individual cumulative duration of work in exposed areas was used as surrogate measure of total asbestos exposure Clinical Evaluation Using a Chinese standardized...

Ngày tải lên: 20/06/2014, 00:20

... growth inhibition by transforming growth factor-β J Invest Dermatol 2000, 114:1200-1204 Luna LG: Routine staining procedure Manual of histologic staining methods of the Armed Forces Institute of ... an interesting aspect of the methods within the madness of malignant growth in melanomas Melanomas provide a mass of cells as one sees in a 3D matrix Analysis of the growth patterns would be of ... average of 1.9 bv/HPF in the tumor At the margins a maximum of 19 bv/HPF and a minimum of bv/HPF are observed In the areas of main tumor growth a maximum of bv/HPF and a minimum of bv/HPF are observed...

Ngày tải lên: 10/08/2014, 05:21

... activation and increases IBb levels in vitro in intestinal epithelial cell lines [36] In gain of function mutations in the Nod2 gene, there is an induction of TH1 and IL-17 secreting T helper ... for the GM-CSF promoter in alveolar macrophages from smokers [46] Also another interesting study investigating the effect of pro-inflammatory cytokines in intestinal alkaline phosphatase (IAP) ... factors in the pathogenesis of Crohn’s disease (CD) Activation of nuclear factor kappa B (NF-B), which is involved in pro-inflammatory cytokine gene transcription, is increased in the intestinal...

Ngày tải lên: 11/08/2014, 03:20

... activation and increases IBb levels in vitro in intestinal epithelial cell lines [36] In gain of function mutations in the Nod2 gene, there is an induction of TH1 and IL-17 secreting T helper ... for the GM-CSF promoter in alveolar macrophages from smokers [46] Also another interesting study investigating the effect of pro-inflammatory cytokines in intestinal alkaline phosphatase (IAP) ... factors in the pathogenesis of Crohn’s disease (CD) Activation of nuclear factor kappa B (NF-B), which is involved in pro-inflammatory cytokine gene transcription, is increased in the intestinal...

Ngày tải lên: 11/08/2014, 06:22

... expressed in flowers and showed a peak of expression at the beginning or during the flowering (http://urgv.evry inra.fr/projects/FLAGdb++/HTML/index.shtml) In tomato, the genes involved into fruit ... fragment in the two different subsets of individuals, are presented in additional files and and summarized in Table All the indicators of genetic diversity (number of segregating sites, number of haplotypes, ... trait in relation to both yield (table grapes) and quality (wine grapes) Indeed, the flavor in wine results from the ratio of skin to flesh, the former being the source of most aromatic and tannins...

Ngày tải lên: 11/08/2014, 11:21

... provided a means both of guiding ZOOVIS into acoustic features of interest and of monitoring the location of ZOOVIS in relation to the bottom One cast recorded during early evening in Hoeya Sound, ... intermittent processes increasingly recognized as playing a crucial role in aquatic ecosystems still does not exist Only in recent years has aquatic ecology begun to incorporate new, exciting, ... range of time and space scales Current areas of interest include the spatial and temporal variability of carbon cycling in the equatorial Paciịc, the in uence of phytoplankton on the heat budget of...

Ngày tải lên: 11/08/2014, 20:21

... Wimereux and in the sandy-mud sediment in the Seine estuary, and in August in the muddy-sand sediment in the Seine estuary It was higher in the sandy mud than in the muddy sand, except in winter conditions ... measurement, and experimentation In this section we gain preliminary insights into factors inuencing pattern formation in the landscape by comparing patterns of adult mussel distribution drawn ... to intertidal communities examine the scalar relationships of certain spatial patterns and the processes underlying them.11,12 Therefore, an examination of methods facilitating comparisons of...

Ngày tải lên: 11/08/2014, 20:21

... Press LLC Signaling during Mating in the Pelagic Copepod, Temora longicornis 155 TABLE 10.2 Kinematics of Backtracking in a Mate-Seeking Copepod, Temora longicornis Mate-Tracking of T longicornis ... trail initially A tightening of his course angles to 15 begins after passing his initial intersection with the trail Here, he again precisely follows the trail, remaining at distances of close ... important in maintaining species integrity (Palumbi, 1994; Orr and Smith, 1998; Higgie et al., 2000) For such widely dispersing species as aquatic marine organisms, an understanding of mate recognition,...

Ngày tải lên: 11/08/2014, 20:21

... in the intervening period such a lack of homogeneity may have ecological signicance to phytoplankton worth investigating Furthermore, biological processes may aid in creating or maintaining inhomogeneities ... bottom) of the maximum value of The two thin horizontal lines intercepting the y-axis are lines describing sets of random numbers The salient feature is that points with different amounts of noise ... properties, singularities, and local oscillations of functions, for solving some differential equations, for investigation of inhomogeneous processes involving widely different scales of interacting perturbations,...

Ngày tải lên: 11/08/2014, 20:21

... program of detecting patterns and trying to nd the underlying mechanisms is generic and therefore independent of the subject of a discipline Many patterns in aquatic and, in particular, marine ecological ... neighbor interactions were identied: damage by wind-thrown trees in the neighborhood, increasing susceptibility to windfall due to canopy gaps in the neighborhood, and an increased input of light ... agent-based modeling in general Thus it seems that the somewhat naive modeling strategy of just throwing a bunch of entities (individuals, agents) with certain properties into a certain environment...

Ngày tải lên: 11/08/2014, 20:21

... buoyant can be found in an analysis of the forces acting on them His hypothesis was based on hours of minute observations of registering the paths of algae and of free-swimming calanoid copepods ... algae As pointed out in the very beginning of this chapter, an advantage for copepods of negative buoyancy is the creation of a strong feeding current, thereby increasing the number of encounters ... the intermediate principal axis of the strain rate There are numerous possible choices for the orientation of the swimming vector We use the direction cosine of the intermediate strain principal...

Ngày tải lên: 11/08/2014, 20:21

... meaning that at times there were an insufficient number of trained staff to conduct all the necessary interviews During these times of understaffing, the existing intake staff chose for interview ... attack patterns within the region Sexual violence in South Kivu was also marked with a predominance of gang rape, thus increasing the risk of serious injury as well as the likelihood of contracting ... (14.3%), 188 taking place in the fields (18.4%) and 68 taking place while the woman was walking or traveling along a road (6.7%) The final 4.1% of attacks occurred in other locations including the market,...

Ngày tải lên: 13/08/2014, 14:20