—volume of coarse lightweight aggregate pe
state of the art report on soil cement
... amount of cement required is specified as a percentage by weight of oven-dry soil, or in lb of cement per ft3 of compacted soil cement Table 6.1 can be used to determine quantities of cement per ... conditions such as slope-protect& Cement requirements vary depending on desired properties and type of soils Cement contents may range from as low as to a high of 16 percent by dry weight of soil Generally, ... insulation properties; however, the cost of this type of construction can be greater than comparably equipped frame houses A typical rammed-earth soil mix consists of 70 percent sand and 30 percent...
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Báo cáo khoa học: "The growth of spruce (Picea abies (L) Karst) in the Krkonoše-(Giant) Mountains as indicated by ring width and wood density" docx
... 71-75 (southern slope), but only in a few trees on sites 77 and 78 (northern slope) In all, 371 (= 1.2%) of the tree rings of the southern-slope spruces but only 54 (0.5%) of the northern- missing ... occurrence of wedging and missing tree rings This serious disturbance of cambial activity points to a lack of supply of assimilates and auxine More- over, the significant impact of temperature ... data available on the periodicity of cambial activity of spruce in the upper Labe Valley, this result must be discussed further This phenomenon implies that the period of cambial activity might...
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Concentration and distribution of extractable elements in soil as affected by tillage systems and fertil
... and stratification of extractable elements in a representative soil of the Rolling Pampa, the most productive area of the Pampas Materials and methods We worked in an experiment performed at the ... hypothesize that concentrations of trace elements will increase and stratify in those soils However, as a consequence of the recent introduction of zero tillage and the lack of fertilization history, ... use of reduced tillage systems, including ZT, and phosphate fertilization are increasing dramatically The widespread use of this technology along the time will affect the soil properties of the...
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The correct answer for each question is indicated by
... u b l e s INCORRECT Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is that of A A o ) n e h a lf B t )w i c e 29 C t ) h e s a m e a s D in ) ... s e D D ) e ci b e l INCORRECT is a type of transmission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal ... D N ) o n e of th e a b o v e 22 INCORRECT Frequency and period are A in ) v er se of e ac h ot h er B pr ) o p or ti o n al to ea ch ot h er C t ) h e s a m e 39 D n ) o n e of th e a b...
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Acacia tumida prunings as source of nutrients for soil fertility improvement in niger biochemical composition and decomposition pattern
... distribution and temperature regime of the experimental site 4.2 Some physical and chemical properties of the experimental soils The physico - chemical properties of the soil at the experimental sites ... that temperature is a key factor controlling the rate of decomposition of organic amendments It appears that microbial activity increases with increasing level of temperature at an optimal of 30 ... quantity remaining at the sampling period 3.3.1 Determination of physical and chemical characteristics of soils of the experimental fields Before the onset of the experiment, composite soil samples...
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Báo cáo khoa học: "A Method for Relating Multiple Newspaper Articles by Using Graphs, and Its Application to Webcasting" pptx
... construct a hierarchical tree of the set of articles This causes ~ calculations of the similarity function, for n articles, with a consequent complexity of O(n2) This is very expensive when n is large ... reference node in their analysis of hypertext In the set of articles V shown in Figure 9, d7 is an index node In this paper, an index node denotes the beginning of a new topic When the topic is ... standard to offer frequently updated collections of information (channels) on Web A CDF document can contains a collection of articles that have tree structure In this paper, graph structures of created...
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Báo cáo khoa học: Specific Ca2+-binding motif in the LH1 complex from photosynthetic bacterium Thermochromatium tepidum as revealed by optical spectroscopy and structural modeling pdf
... fluorescence spectroscopy UV-visible absorption spectroscopy with a spectral resolution of 0.5 nm was performed using a U-3310 spectrophotometer (Hitachi, Japan) Near-infrared fluorescence spectra (spectral ... states of BChls and other structural changes in the 915 nm form of LH1, as reflected by the temperature-dependent fluorescence spectra, reveal higher dissociation enthalpy of this complex with respect ... to dissociation of the LH1–RC assembly The tendency of spectral shift appears to be significantly different between the two LH1–RC forms, i.e nonlinear and linear temperature dependence are observed...
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Báo cáo hóa học: " Quality of Life as reported by school children and their parents: a cross-sectional survey" docx
... assessing pediatric QoL, because children's cognitive abilities, attitudes and subjective experience of their own well-being change across development [1] In respect of the measurement of pediatric ... translation of the child and parent versions of the KINDL and the ILC The following hypotheses were tested in respect of child and parent reports of QoL in a representative sample of Norwegian ... different perspectives of informants in various contexts [16] Limitations of the study About 10% of parents whose children participated in the study did not fill out the QoL questionnaires The group of...
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Genetic diversity of populations of the malesian moss, acanthorrhynchium papillatum, as measured by microsatellite markers and ITS2 sequences
... the genomes of species in which they have been searched (Bruford & Wayne, 1993) Repeat length of the same microsatellite locus may vary, often greatly, among individuals of the same species They ... limited several aspects of this study Only one species of moss, Acanthorrhynchium papillatum, was studied Originally several species of mosses, each with different combinations of substrate preference, ... alleles per locus: the presence or the 18 absence of an amplicon) The paper of van der Velde et al (2000) is the first report of the development of microsatellite markers for a moss species Fourteen...
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Tài liệu Báo cáo khoa học: Si-face stereospecificity at C5 of coenzyme F420 for F420H2 oxidase from methanogenic Archaea as determined by mass spectrometry ppt
... stereospecificity of F420-dependent enzymes thus appears to be independent of their phylogenetic origin and of the thermodynamics of the reactions catalysed by them Recently a novel F420-dependent ... with NaBH4 in a nonstereospecific reaction In Fig 2A three MALDI-TOF mass spectra of a control experiment are shown: the spectrum of [5-1H]F420 (Fig 2Aa); the spectrum of [5-1H2]F420H2 generated ... Re-face stereospecificity at C4 of NAD(P) Thus the NADP-dependent glucose-6-phosphate dehydrogenase is Si-face specific (E° ¼ )330 mV) and the NAD-dependent malate dehydrogenase is Re-face specific (E°...
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Báo cáo hóa học: " New criteria for stability of neutral differential equations with variable delays by fixed points method" docx
... class of the linear neutral differential equation with variable delays, several special cases of which have been studied in [2,17-19] Some of the results, like Theorems A, B, and C, mainly dependent ... results on stability of the zero solution of Equation Then, we generalized the results of the stability to Equation Consider the first-order delay neutral differential equation of the form x (t) ... s, and the zero solution of (8) is stable Thus, the zero solution of (8) is asymptotically stable, and hence the zero solution of (1) is asymptotically stable The proof is complete □ Remark Let...
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Báo cáo khoa học nông nghiệp " Nutrient recovery by rice crops as a treatment for aquaculture solid waste: crop yield, nutrient status and nutrient budgets " doc
... create a risk of off-site effects of P from the continual use of fishpond waste However, as a precaution, and to minimise costs of rice production there appears to be ample scope for substantial ... harvest of 300 t/ha/yr from fishponds, and a feed conversion of tonne of fish biomass for every 1.6 t of feed, of fishpond generates about 180 t of organic waste Based on an application rate of t/ha, ... about 60 of padi land per of fishpond This represents a minimum ratio of fishpond area to rice paddy area Greater than 60 per of fishpond area would be advisable to minimise the risks of nutrient...
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Báo cáo lâm nghiệp: "Management criteria for Ficus insipida Willd. (Moraceae) in Amazonian white-water floodplain forests defined by tree-ring analysis" pptx
... cycles of 24 years (mean passage time through a size class) and a MLD of cubits (58.8 cm) to guarantee the sustainable use of the teak stocks [8, 11] The existence of annual growth rings of tree species ... factor of 0.6) The minimum logging diameter is dened in the peak of the current volume increment short period of tree growth, while tree-ring analysis applied in this study describes the growth of ... with a basal area of 8.4 m2 ha1 , corresponding to 27.6% of the stands basal area (30.5 m2 ha1 ) The ve most frequent tree species comprised 79% of the total abundance, 82% of the stands basal...
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Báo cáo khoa học: "Can generic paediatric mortality scores calculated 4 hours after admission be used as inclusion criteria for clinical trials" pot
... identified in some of the assessments, retrospective analysis of patients who died was performed for the classes of mortality probability for which the χ2 value exceeded 2.5 A χ2 value of 11 was needed ... that perfect calibration and perfect discrimination cannot coexist; a perfectly calibrated model is not perfectly discriminatory because it has an AUC of only 0.83 rather than Customization of ... goodness -of- fit test values: time point for which the scores were developed Score Mortality probability classes (%) Expected deaths Observe d deaths Observed survivors Expected survivors χ2 goodnessof-fit...
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Accounting skills and programs needed for the next century as viewed by colleges and universities
... Institute of Certified Public Accountants State of Policy 127 APPENDIX E: Federation of Schools of Accountancy Charter 129 APPENDIX F: Study Questionnaire 131 APPENDIX G: Study Cover Letter 137 APPENDIX ... each of the groups of people that identified the necessary accountant skills and competencies? Reproduced with permission of the copyright owner Further reproduction prohibited without permission ... Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY Department of Educational Administration and Foundations ILLINOIS STATE UNIVERSITY 1998 Reproduced with permission of the copyright...
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Báo cáo y học: "Segment-orientated analysis of two-dimensional strain and strain rate as assessed by velocity vector imaging in patients with acute myocardial infarction"
... cut-off value 15 for strain of –6.5 % a sensitivity of 23 % and specificity of 87 % was calculated for the detection of infarcted segments (AUC 0.6, confidence interval 0.53 – 0.64) A 111 cut-off ... cut-off value of –10.34% resulted in a sensitivity of 54 % and specificity of 59 % (see Table 6) The intra- and inter-observer variation of our data is congruent with the data of Jarnert et al ... comparison to adjacent and non-infarcted segments with a sensitivity of 80% and a specificity of 70% (AUC 0.8) with a cut-off value of less than 1.95 cm/s Poor agreement between VVI and TDI measurements...
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boundary element methods for soil structure interaction
... nevertheless are of interest to specific aspects of Soil-Structure Interaction In Part the first Chapter is by Professor J Dominguez of the University of Seville and contains a review of 25 years of dynamic ... ninth and final Chapter of the book by Professor L C Wrobel of Brunel University, Dr E Reinoso of the University of Mexico City and Professor H Power of the University of Nottingham presents an ... terms of the matrix K are functions of the frequency Properly speaking, the matrix K should be called stiffness or impedance of the soil for a given shape of the foundation It is worth saying...
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BIOLOGICAL NITROGEN REMOVAL FOR LONG-TERM LANDFILL LEACHATE BY USING MLE PROCES
... that of experiment on the effects of hydraulic loading rate Fig Variation of MLSS and effluent TSS concentration Fig 10 Variation of nitrogen removal rate to loading rate Fig Variation of effluent ... test period based on the affecting factors For the experiment on changes of hydraulic loading rate, we increased the flow rate from to 12 m3/d at the interval of m3/d In addition, for the experiment ... nitrification efficiency of about 99 % and showed no accumulation of NO2 N in 20 days And pH of nitrification tank was the range of 7.5~7.7 Raw leachate was influent after the aeration time of about 15 days...
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