rhizosphere management as part of intercropping and rice wheat rotation systems

... Effects of Soil and Plant Management on Crop Pests and Diseases 593 In Vietnam, CIRAD researchers and colleagues have documented: (1) a rapid decrease in the biodiversity and density of macrofauna associated ... numerous aspects of soil structure The arrangement of soil particles and voids affects the retention and transmission of fluids in soil, the extent of soil aeration, and the growth and proliferation of ... (CCD) was negotiated in 1992 and came into force in 1996, with a particular emphasis on halting land degradation in the drylands of Africa Soil and land degradation was still widely seen as a local...

Ngày tải lên: 11/08/2014, 17:21

... in a dataset of 1,372 sets of orthologs spanning a total of 12,348 genes Each such set of orthologous genes (SOG) was then aligned, and its ancestral sequences at the internal nodes of the phylogenetic ... co-localization of GO groups and their co-evolutionary score (see Materials and methods for a description of how we computed the co-localization score of pairs of GO groups) The co-evolution of genes and ... requires the computation of the tAIs of each of the gene sequences (the leaves of the phylogenetic tree), and the estimation of the tAIs of the sequences at the internal nodes of the phylogenetic...

Ngày tải lên: 14/08/2014, 21:20

... consistent with the type of business - Target customers: The target customers and the types of goods a company offers can have effect on the level of price elasticily of demand For example, when ... the areas assigned On the basis of the overall business plan given by the directors each year, the sales department will work out plans and specific methods of implementation, distribution, and ... resources and energy to complete the assigned tasks when being satisfied with working conditions as well as material and mental benefits To satisfy the interests of both sides (business and employees),...

Ngày tải lên: 27/10/2012, 16:40

... concentration of ethanol exerts its effect through induction of transcription factors (AP1, Elk1, Stat1, SRF and NFκB) and expression of apoptotic genes (Fas receptor, Fas ligand, FADD and caspase 8) ... PCR was used to validate the effect of ethanol on gene expression Total RNA was isolated from HepG2 cells using RNAsy kit (Qiagen) and RNA quality was evaluated using RNA 6000 Nano Chip Kit and ... targets in the diagnosis and treatment of human hepatocellular carcinoma Materials and methods Cell culture and reagents Based on the reported alteration of gene expression of primary human hepatocytes...

Ngày tải lên: 31/10/2012, 15:28

... paid to a particular class of random variables, called circular complex random variables Circularity is a type of symmetry in the distributions of the real and imaginary parts of complex random variables ... frequency bands, and the energy in each band is found by integrating Sxx (ω, ω) over the band c 1999 by CRC Press LLC We can define a bandpass stochastic process, with band B, as one that passes undistorted ... (60.56) In Eqs (60.55) and (60.56), ωc is the center frequency for the passband of s(t), and the lowpass filter ˆ has bandwidth greater than that of s(t) but much less than 2ωc s(t) and s(t) are equivalent...

Ngày tải lên: 25/10/2013, 02:15

... Because of the short distances between the sources of most of these rivers and their receiving marine waters, their impact on coastal seas is, in most cases, relatively fast and because of the ... content in coastal waters of the East Sea is higher than in offshore areas Higher values along the coast are found in regions with large material fluxes from land such as off the mouths of the Red, ... removed as surface and Biogeochemical Variability of Vietnamese Coastal Waters Influenced by Natural and Anthropogenic Processes coasts and have been increasing in frequency over the past few...

Ngày tải lên: 27/10/2013, 14:15

... ar(X1 (t)) Tài liệu tham khảo: [1] Shunki Osaki, Applied Stochastic System Modeling, 1992 [2] David G Kendall, On The Generalized "Birth and Death" Process 17 (4.42) ... phần tử" sau đơn vị thời gian h với xác suất o(h) ) 3 Quá trình sinh hủy tổng quát: (General Birth and Death Processes) 3.1 Định nghĩa: Việc tổ hợp trình sinh hủy ta trình sinh hủy Quá trình chuyển...

Ngày tải lên: 26/12/2013, 19:05

... TRUDINGER AND XU-JIA WANG Proof of Lemma 5.1 The proof is also a refinement of that of Lemma 3.4 As before we suppose the origin is a boundary point, and near the origin ∂Ω is given by (2.6), and uk ... k), we assume uk (0) = and Duk (0) = By the second inequality of (2.16) we have Sh,uk (0) ⊂ Dtk /2 for h = C0 t2 For simplicity we assume that C0 = We k define ah,k and bh,k as in (2.17) and (2.18) ... ∂i ∂j Note that the H¨lder continuity of ft suffices for (4.4), as o in the proof of Lemma 2.1 By (4.3), the least eigenvalue λ and the largest eigenvalue Λ of D2 v satisfy C −1 K −2 ≤ λ ≤ Λ ≤ CK...

Ngày tải lên: 16/02/2014, 06:20

... The Ca2+ signals released by astrocytes subsequently alter vascular tone and promote either vasoconstriction [68] or vasodilation [67] In astrocytes, vasoconstriction and vasodilation both require ... regulate the formation and maintenance of BBB, modulate neurovascular coupling and maintain several parts of brain homeostasis In this minireview, we focus on the active functions of astrocytes in regards ... brief, the nascent vasculatures formed by vasculogenesis and angiogenesis are stabilized via the recruitment of mural cells and generation of the extracellular matrix The nascent vasculatures...

Ngày tải lên: 18/02/2014, 11:20

... Shibuya Therapeutic aspects of VEGF in brain diseases [3] The BBB mainly consists of a strong interaction between vascular endothelial cells and astrocytes, and the tight junctions of vascular endothelial ... several groups [28] Glioma metastasis and VEGF Intracranial invasion and metastasis are major problems in the prognosis of malignant glioma However, their molecular basis is largely unknown Several ... structure and become more resistant to hypoxia–low nutrition double stress, Therapeutic aspects of VEGF in brain diseases resulting in an aggressive phenotype in terms of invasion and metastasis in...

Ngày tải lên: 18/02/2014, 11:20

... neurovascular unit under normal and diseased conditions after stroke The concept of the neurovascular unit emphasizes the importance of cell–cell signaling between neurons, astrocytes and endothelium ... implicated as central in neurovascular injury after stroke In particular, the matrix metalloproteinase (MMP) family of extracellular proteases has been very well studied MMPs comprise a family of zinc ... astrocytes and endothelial partners [17,18], and activation of inflammatory pathways in damaged endothelium might also open the BBB [19,20] In recent years, dysregulation of neurovascular proteases has...

Ngày tải lên: 18/02/2014, 11:20

... set of case particles, the “ha” case particle, and a class of “fukujoshi” Many methods for reranking the parsing of English sentences have been proposed (Charniak and Johnson, 2005; Collins and ... co-occurrence of particle set rs, verb v, and the syntactic property syn) as the co-occurrence of rs and syn, v The dimension of the hidden class was 100 The total number of rs, syn, v pairs was 1,016,508, ... considering the features of bunsetsus such as their character strings, parts of speech, and inflection types, as well as information between bunsetsus such as punctuation and the distance between...

Ngày tải lên: 20/02/2014, 12:20

... enjoyable part of the subject as oiTe gets to ask direct questions of the embryo and even, occasionally, to get direct answers Hamburger (1988) has written a fascinating history of this period of embryology ... embryos Although we often have very good descriptions of how a particular organ forms and of the nature of the participating cells and molecular constituents, it is in relatively few cases that we have ... together, and here we will examine the generation of the neural tube in the newt and the formation of the ducted submandibular glands of the mouse The latter example in particular illustrates particularly...

Ngày tải lên: 05/03/2014, 11:21

... use gases to react with the metal and raise it to its melting point, or as assist gases Many lasers require a gas supply for the laser itself, or for shielding purposes or as assist gases in laser ... Compressed and liquefied gases Fume, dust, vapour and gases Control of exposure to fume, dust, vapour and gases Radiation Noise and vibration Mechanical hazards Part Processes 10 Gas welding, cutting and ... reorganisation of the contents has taken place, and a worked example has been included in Appendix B to illustrate the method of risk assessment, which is the basis for the assessment and control of risk...

Ngày tải lên: 06/03/2014, 07:20

... advantage of advances (Asch and Hosek, 2004) The last of these is integral to transformation, involving a revolution in the manner, speed, and effectiveness of industrial and commercial tasks and depends ... restructuring Dedication of 10–15 percent of workforce to enterprise integration instead of program of ces Grouping of SPOs Assignment of Responsibilities Same as assignment of responsibilities for ... demands for products and warfighting capabilities As part of this effort, the AFMC Director of Personnel (AFMC/A1) asked the RAND Corporation to assist in identifying, analyzing, and preparing effective...

Ngày tải lên: 06/03/2014, 20:20

... the early part of S phase This relocation was blocked by the introduction of the calcium chelator, BAPTA-AM, and was mimicked by the calcium ionophore, A23187 The biological relevance of this calcium-dependent ... between BRCA1 nuclear import and export could provide a fine level of regulation of its nuclear and ⁄ or cytoplasmic functions Tight regulatory control of BRCA1 localization has far-reaching implications ... BRCA1 was present predominantly within the nucleus of a variety of breast and ovarian tumor-derived cell lines This countered an earlier report by Chen et al [4], who suggested that BRCA1 was indeed...

Ngày tải lên: 06/03/2014, 22:21

... understand and document the evolution of social and political complexity of the small-scale agricultural groups of the American Southwest The first of these was a workshop sponsored by the School of ... definition of games encompasses child's play—which teaches about and prepares for reality and not just those frivolous pastimes of adults, which release them from it This volume is based on and made ... [1946:213]) are part of history But actions, which are "the unity of the outside and inside of an event" are the true province of history, and to understand them we must enter into the thoughts of the...

Ngày tải lên: 14/03/2014, 21:20

... 10 and equilibrium was attained within h [127] Fig 10 shows Cd adsorption isotherms for two soils, a loamy sand and a sandy loam, as a function of pH The sorption capacity of the soil increases ... specifically adsorbed by Fe and Mn oxides and clay minerals Adsorption of Cr(III) increases with increasing pH and content of soil organic matter while it decreases in the presence of competing cations ... nature and position of charges on the surface There are two q1 = Fig Adsorption of As( III) on Wyoming bentonite as a function of pH and ionic strength Reaction conditions: 25 g/l clay, [As( III)]0...

Ngày tải lên: 15/03/2014, 23:09

... ratesÐexpressed as mean weekly depth (cm/week)Ðvaried markedly over the course of each cropping cycle, decreasing steadily and, in many cases, ceasing as transpiration increased as a result of crop growth ... determined The upper 10 cm of soil was carefully handtilled in preparation for pH adjustment and sludge incorporation Once ¯ow systems were installed and hand-tilling was complete, several initial ... losses as of the end of Cycle Similarly, the drainage tubing of four columns (old site Hudson, and Arkport soil dewatered sludge, NV, and natural control treatments) was replaced at the end of Cycle...

Ngày tải lên: 16/03/2014, 00:07

... the increase in soil Cd concentration However, more often the increase in stem Cd amount was between 40 and 80% of the increase in Cd content of the topsoil The reason that the increase in stem ... uptake of Cd at low solution concentrations has been reported in reviews by Grant et al [13] and Greger [14] to be either passive, metabolic or partially metabolic and partially passive and may ... the uptake of Cd is not directly proportional to biomass production, the Cd incorporated into the stems will still increase with increased stem yield as long as the increase in biomass is larger...

Ngày tải lên: 16/03/2014, 00:07