algal bioassay of inorganic stressors
Tài liệu Environmental impacts of petroleum production: Fate of inorganic and organic chemicals in produced water from the Osage-Skiatook Petroleum Environmental Research sites, Osage County, Oklahoma doc
Ngày tải lên :
14/02/2014, 03:20
... climatic settings of the Lester and Branstetter leases resemble that of much of the major southern mid-continent oil- and gas-producing area of the U.S The leases are also typical of many depleted ... concentrations of Ca, Mg (Fig 3), Sr, Ba and NH4, but very low amounts of SO4, HCO3 (Fig 4) and H2S With the exception of Fe, the concentrations of trace metals are low, and the values of organic ... the volume of produced water relative to petroleum increases with time, typically reaching 98% of total fluids during the later stages of field production The chemical composition of produced...
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The Effects of Inorganic Salts and Precipitated Calcium Carbonate Filler on the Hydrolysis Kinetics of Alkylketene Dimer docx
Ngày tải lên :
09/03/2014, 01:20
... Colleges and Schools to award the Master of Science and Doctor of Philosophy NOTICE on Colleges degrees of the Southern Association of AND DISCLAIMER The Institute of Paper Science and Technology (IPST) ... hydrolysis of AKD at pH 8.3 A, 22 “C, and B, 50 OC 0 Time (h) Figure The pH effect on the hydrolysis of AKD at 50°C 80 60 Time (h) Fig The effect of inorganic salts on the hydrolysis of AKD at ... treatment of, or employment in the programs and activities which the Institute operates The Effects of Inorganic Salts and Precipitated Calcium Carbonate Filler on the Hydrolysis Kinetics of Alkylketene...
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Geochemistry of inorganic arsenic and selenium in a tropical soil effect of reaction time, ph, and comp
Ngày tải lên :
16/03/2014, 00:25
... types of minerals In addition, the abundance of soils in a variety of geochemical environments and their influence on adsorption of contaminants suggested the need for more characterization of As ... of As(V), Se(IV), and Se(VI) with increasing pH showed evidence of similar behavior to that of surface charge density of the soil (Fig 1) The soil surface charge density decreased as the pH of ... contaminants Arsenic can exist in inorganic form, organic form, and gaseous state The oxidation states of As in the natural systems are )3, 0, +3, and +5 The main inorganic forms of As in contaminated soils...
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reaction mechanisms of inorganic and organometallic systems (topics in inorganic chemistry)
Ngày tải lên :
01/04/2014, 10:37
... type of modeling is capable of providing an indication of the effects of steric interactions on reactivity, but gives no measure of the actual energetics of the reaction More recently, modeling of ... slope of -k\ The linearity of such plots often is taken as evidence of a first-order rate law Since the assessment of linearity is somewhat subjective, it is better to show that the slope of such ... function of the concentrations of X, Y and Z In inorganic systems, the concentration dependence of fcexp can be quite complex, but some common forms of fcexp are Most commonly, the dependence of &exp...
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handbook of inorganic chemicals, patnaik
Ngày tải lên :
09/05/2014, 17:05
... the amount of heat required to raise the temperature of one gram of a substance by 1°C The specific heat of water is calorie or 4.184 Joule The heat of fusion, ∆Hfus is the amount of thermal ... such as thermal conductivities, coefficient of linear expansion, heat of fusion, and the heat of vaporization Under the “Recovery” or “Production” mining of ores, ore opening, separation, and isolation ... of refraction is the ratio of wavelength or phase velocity of an electromagnetic wave in a vacuum to that in the substance It measures the amount of refraction a ray of light undergoes as it passes...
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handbook of inorganic chemistry (patnaik)
Ngày tải lên :
09/05/2014, 17:05
... the amount of heat required to raise the temperature of one gram of a substance by 1°C The specific heat of water is calorie or 4.184 Joule The heat of fusion, ∆Hfus is the amount of thermal ... such as thermal conductivities, coefficient of linear expansion, heat of fusion, and the heat of vaporization Under the “Recovery” or “Production” mining of ores, ore opening, separation, and isolation ... of refraction is the ratio of wavelength or phase velocity of an electromagnetic wave in a vacuum to that in the substance It measures the amount of refraction a ray of light undergoes as it passes...
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USES OF ORGANIC MATTER AND USES OF INORGANIC MATTER potx
Ngày tải lên :
29/06/2014, 15:20
... alkaline substances Thus nitrate of potash (saltpetre), is composed of nitric acid and potash: nitrate of soda (cubical nitre), of nitric acid and soda USES OF INORGANIC MATTER What effect has ... condition of inorganic matter is requisite for fertility? What is the fixed rule with regard to this? What is the condition of the alkalies in most of their combinations? Of the acids? What is said of ... the soil of some parts of Massachusetts and that of the Miami valley? The subsoil is usually of a different character from the surface soil, but this difference is more often the result of circumstances...
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Báo cáo lâm nghiệp: "Biochemical aspects of inorganic nitrogen assimilation by woody plants" pdf
Ngày tải lên :
09/08/2014, 04:20
... chloroplastic isoform, while, in the leaves of species typical of closed, climax forest, the cytosolic isoform predominates (Stewart et al., 1988) Moreover, several of these trees of climax forest ... localization of assimilation However, studies of the distribution of nitrate reductase activity (NRA) between the roots and shoots of tropical and subtropical trees indicate that about 30% of the species ... regards the sites of nitrate reduction Measurements of the -i>- r-B J -1 -¡, -:.: : _Z _:J. J.- ,-x -. o distribution of nitrate reductase activity between roots and shoots and of xylem sap nitrogenous...
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synthesis of inorganic nanowires by using peptide nanotubes as the templates via biologic recognition
Ngày tải lên :
13/11/2014, 16:27
... satisfaction of the dissertation requirements for the degree of Doctor of Philosophy January 2006 Prof Hiroshi Matsui Date Chair of Examining Committee January 2006 Prof Gerald Koeppl Date Executive Officer ... imprint of DNA molecules onto the inorganic crystal structures(78) The study of biomineralization offers 19 valuable insights into the scope and nature of materials chemistry at the inorganicorganic ... plenty of resources for the construction of different inorganic nanomaterials for the purposes of research and further industrial applications Many researchers have realized that the design of templates...
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Development of inorganic organic hybrid materials for waste water treatment
Ngày tải lên :
09/09/2015, 08:18
... vanadium), (b) partial density of states (PDOS) of CB of V-doped TiO2, (c) PDOS of Ti in CB of V-doped TiO2 and (d) PDOS of V in CB of V-doped TiO2 138 Figure 5.2 (a) Model of N-doped TiO2 (red = oxygen, ... titanium, yellow nitrogen), (b) PDOS of VB of states of N-doped TiO2, (c) PDOS of O in CB of N-doped TiO2 and (d) PDOS of N in CB of N-doped TiO2 139 Figure 5.3 (a) Model of anatase TiO2 (red = oxygen, ... diagram of a diffuse reflectance spectrophotometer with integration sphere 71 Figure 2.8 DRS of anatase TiO2, the plot of (a) ABS versus the wavelength of light, (b) ABS versus the energy of light,...
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Tài liệu Báo cáo khoa học: Inorganic phosphate regulates the binding of cofilin to actin filaments pdf
Ngày tải lên :
19/02/2014, 07:20
... or ADP–Pi in the cleft of actin protomers located in the vicinity of the barbed end of the filament, producing an ATP or ADP–Pi cap at this end Because of the presence of this cap at the barbed ... the regulation of actin dynamics in the cell Results Fluorescence measurements of the effect of Pi on the rate of cofilin binding to TRC–F-actin A convenient way to study the binding of cofilin to ... fluorescence intensity of TRC–F-actin is decreased > 70% upon binding of cofilin, while the fluorescence intensity of G-actin changes little upon addition of cofilin [21] The binding of lm cofilin to lm...
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Tài liệu Báo cáo khoa học: Inorganic pyrophosphatase in the roundworm Ascaris and its role in the development and molting process of the larval stage parasites doc
Ngày tải lên :
20/02/2014, 11:20
... Spatial structure of yeast inorganic pyrophos˚ phatase at a resolution of A Bioorg Khim 10, 1469–1482 Ó FEBS 2003 22 Cooperman, B.S (1982) The mechanism of action of yeast inorganic pyrophosphatase ... presence of increasing concentrations of inhibitors for 10 days, and the number of molting larvae was determined Molting was manifested by shedding of the L3 cuticle Results Identification of cDNA ... concentrations of individual components were varied as indicated for the determination of Mg2+ and pH dependent rAsPPase activity The amount of Pi liberated from the hydrolysis of PPi during the course of...
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Báo cáo khoa học: Functional expression of olfactory receptors in yeast and development of a bioassay for odorant screening docx
Ngày tải lên :
07/03/2014, 16:20
... Luciferase bioassay and functional expression of the ORs in yeast To address the functional integrity of the ORs expressed in yeast, we developed a luciferase reporter bioassay Initially, the bioassay ... under the control of the GAL10 promoter The induction of the yeast, by galactose containing media, results in overexpression of GAL4, in turn inducing an increase of the expression of the OR gene ... the expression of ORs in heterologous cell systems [10] A major hindrance to functional expression of ORs has been the tendency of ORs to be retained in endoplasmic reticulum of heterologous...
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Báo cáo khoa học: Isolation and enzymatic characterization of lamjapin, the first ribosome-inactivating protein from cryptogamic algal plant (Laminaria japonica A) ppt
Ngày tải lên :
08/03/2014, 10:20
... mimics the S/R domain of rat ribosomal RNA (SRD RNA) is an useful substrate for studying the mechanism of action of RIP and for analysis of the chemistry of recognition of RNA by RIP [22,23] ... increment of lamjapin in the reaction mixture The IC50 (the concentration of RIP causing 50% inhibition of translation) of lamjapin is about 0.69 nM, a very low value for an inhibitor of protein ... procedures of lamjapin from 30 g dry powder of L japonica A One unit of specific activity is defined as the amount of protein necessary to inhibit protein synthesis by 50% in 50 lL of reaction...
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Báo cáo khoa học: Comparative biochemical and functional studies of family I soluble inorganic pyrophosphatases from photosynthetic bacteria potx
Ngày tải lên :
16/03/2014, 11:20
... molecular mass of 19 216 Da and a pI of 4.69, in good agreement with MALDI-TOF MS (Fig 1A) and chromatofocusing data, respectively The other three N-terminal sequences determined in this work, of Anabaena ... Josse for critical review of the manuscript, and Professor W Loffelhardt (University of Vienna, Austria) for ¨ his assistance in N-terminal protein sequencing and some MALDI-TOF MS analyses This work ... properties of pure cultures of cyanobacteria J Gen Microbiol 111, 1–61 18 Kankare J, Neal GS, Salminen T, Glumoff T, Glumhoff T, Cooperman BS, Lahti R & Goldman A (1994) The structure of E coli...
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Assessing the hazard of metals and inorganic metal substances in aquatic and terrestrial systems
Ngày tải lên :
16/03/2014, 11:45
... The output of such an approach is an estimate of load of the amount 44400_book.fm Page Wednesday, November 8, 2006 3:56 PM Assessing the Hazard of Metals and Inorganic Metal Substances of metal ... example, analyses of the degree of partitioning of a variety of metals have been performed to provide insight concerning their persistence in the water column and the rate of delivery of sorbed metal ... conclusions that are drawn are often of questionable validity Compounding all of these problems is the failure of the classical PBT approach to consider, in any way, the quantity of the material released...
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Input and output of dissolved organic and inorganic nitrogen in subtropical forests of South China under high air pollution docx
Ngày tải lên :
23/03/2014, 00:20
... N saturation of this natural − stand is the cause of the reduced growth A mean NO3 -N leaching for the two years −1 −1 of observation of 39 kg N yr imposed a strong acidification of the upper ... Back Close Full Screen / Esc 4.3 Impacts of N deposition on N leaching 25 In forest ecosystems, throughfall fluxes of N are often used as a first approximation of the total deposition (Gundersen et ... throughfall of all forest were similar to that of precipitation In the young forests DIN was further retained in the soil, but 41–63% of precipitation DIN was still leached Additionally, about half of...
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Báo cáo khoa học: Mechanisms of cholinesterase inhibition by inorganic mercury potx
Ngày tải lên :
23/03/2014, 09:21
... binding of mercury ions promotes the aggregation of D melanogaster acetylcholinesterase, perhaps as a consequence of the crosslinking of two coordinating residues present at the surface of the ... dilution of the sample Fig Remaining activity of D melanogaster acetylcholinesterase following incubation with mercury (A) Effect of mercury concentration with 500 nM enzyme (B) Effect of protein ... Organic and inorganic mercurials are capable of forming very tight bonds with functional groups such as thiolates of cysteine [41,42] Sulfhydryl groups are considered to be the main targets of mercury,...
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Báo cáo khoa học: Extrinsic proteins of photosystem II An intermediate member of the PsbQ protein family in red algal PS II ppt
Ngày tải lên :
31/03/2014, 07:20
... cross-reconstitution experiments Fig Cross-reconstitution of red algal or green algal PS II with the green algal 17-kDa protein or the red algal 20-kDa protein (A) Red algal PS II from Cy caldarium was washed ... red algal PS II in place of the 20-kDa protein Second, cross-reconstitution of the 20-kDa protein with the green algal PS II was carried out Fig 4B shows Table Restoration of oxygen evolution of ... of the 17-kDa protein in green algal PS II is similar to that of the 20-kDa protein in the red algal PS II in that the latter also binds to PS II by itself and promotes the complete binding of...
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inorganic biochemistry of iron metabolism
Ngày tải lên :
11/04/2014, 09:48
... and often with other metal and non-metal cofactors, can in biological systems The importance of well-defined amounts of iron for the survival, replication and differentiation of the cells of animals, ... One of the most impressive developments in our understanding of iron metabolism since publication of the first edition of this book has been the application of the revolutionary techniques of molecular ... distribution of a host of impurities Rapid hydrolysis of Fe(III) solutions (for example neutralization of ferric solutions with an excess of alkali) gives a red–brown precipitate of ferrihydrite...
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