Controls of bioavailability and biodegradability of dissolved organic matter in soils

... theuptake and degradation of organic matter by microorganisms, then DOM should play akey role in the stabilisation and destabilisation of soil organic matter, and thus, in Cdynamics and C pools of soils. ... reserved.Keywords: Bioavailability; Biodegradation; Dissolved organic matter; DOC1. Introduction In the past 10 years, much progress has been made in the understanding of dissolved organic matter (DOM) ... in the preservation of organic matter in soils. Org. Geochem. 31, 711 – 725.Kaiser, K., Guggenberger, G., Zech, W., 2001a. Organically bound nutrients in dissolved organic matter fractionsin...

Biological Alteration of Zinc Complexation Characteristics of Dissolved Organic Matter in Domestic Wastewater Treatment Plant Effluent under River Water Environment

... explained in Chaminda et al. (2010) and in the Appendix of this paper. RESULTS AND DISCUSSION Biodegradability of zinc binding sites in river water DOM Fig. 1 represents the variation of ... within or less than two weeks. Biodegradability of zinc binding sites in DOM of WWTP effluent in river water Fig. 3 shows the variation of DOC, UV254 and SUVA during the incubation of DOM ... first 4 days of incubation period and became persistent. This degradation of binding sites was also in line with the increment of labile Zn concentration during the first 4 days of incubation....

Influence of Phosphorus Concentration on the Biodegradation of Dissolved Organic Matter in Lake Biwa, Japan

... Y. and Yamada E. (2004). Determinations of humic substances and other dissolved organic matter and their effects on the increase of COD in Lake Biwa, Anal. Sci., 20, 159-164. Gurung T. B. and ... Res. Inst., 22, 161-170. (in Japanese) Hayakawa K. and Takahashi M. (2002). Behavior of dissolved organic matter in the northern basin of Lake Biwa and current situation related to COD increase, ... estimated from DP and TP data in 1986, 1990 and 1999-2009 at Imazuokichuo-point and Minamihiraokichuo-point in the northern basin of Lake Biwa (Lake Biwa Environmental Research Institute, 2011)....

Effects of compost and phosphate amendments on arsenic mobility in soils and arsenic uptake by the hyper

... that growing Chinese brake fern in conjunctionwith phosphate amendments increases the eﬀectiveness of remediating As-contaminated soils, by increasing As uptake and decreasing As leaching.Published ... contamination from the leaching losses of wood preservatives. As arsenic accumulates in soils, there may be an increase in health risks resulting fromAs leaching into ground and surface water and ... 2003‘‘Capsule’’: Phosphate amendment increases the eﬀectiveness of Chinese brake fern to remediate As-contaminated soils, by increasing As uptake and decreasing As leaching.AbstractChinese brake fern (Pteris...

Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge

... Journal of Water and Environment Technology, Vol.1, No.2, 2003 - 247 - Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated ... the effect of DOM and biofilm attached onto PAC were decrease in adsorption capacity of PAC in the aeration tank. The objective of this study is to clarify the effect of DOM and biofilm on the ... suspended into 495 ml of the glucose medium in an Erlenmyer flask as an inoculum. Then, 5 g of PAC was added into the flask and shaken at 120 rpm and 20±0.5 oC. After the depletion of DOC in the...

Bioavailability and toxicity of cd to microorganisms and their activities in soil

... producers and form the base of the food chain. Algae account for 4–27% of the totalmicrobial biomass in the soil (McCann and Cullimore,1979) and are involved in maintaining soil fertility and oxygen ... of dissolved organic carbon after soil drying and rewetting asan indicator of metal toxicity in soils. Soil Biol. Biochem.33, 235–240.Mong, H.B., Brown, L.R., Kim, J.K., 1995. Effect of zinc ... assessment and remediation of contami-nated (inorganic and organic) soils. In: Johnston, C.D.,(Ed.), Contaminated site remediation: From Source Zonesto Ecosystems. Proceedings of the 2000 Contaminated...

$Correlation of the partitioning of dissolved organic matter fractions with the desorption of cd$

Correlation of the partitioning of dissolved organic matter fractions with the desorption of cd

... studies have also included the effects of Ca onthe binding and dissolution behavior of OM in soils and aquatic systems. Mandal et al. (2000) examined the effects of Ca and Mg on Ni binding by FA. They ... Jordan et al. (1997)examined the increased mobility of Pb in the presence of natural organic matter in a sandy soil. They found that peathumic acids had a higher binding affinity for Pb than peatfulvic ... sed in the form of Ni2+ion in thepresence of Ca and Mg as these ions out-compete Ni forbinding sites. Curtin et al. (1998) identified soil organic matter as the major source of Ca preferring...

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Báo cáo Y học: The opgGIH and opgC genes of Rhodobacter sphaeroides form an operon that controls backbone synthesis and succinylation of osmoregulated periplasmic glucans pot

... digesting pUI2509 with HindIII and KpnI,andinsertedintopRK415digestedwithHindIII and KpnI, to give pGAK247 (Fig. 3).A1.2-kbBglII–KpnI fragment from pUI2509, containingan intact copy of opgI, ... digestingpNFR15 with HindIII and KpnI,andinsertedintopRK415digested with HindIII and KpnI, to give pNFR20 (Fig. 3).A1.8-kbStuI–SmaI fragment from pNFR12, containingopgC, was inserted into ... degree of polymerization (DP) in the range of 5–24; (b)D-glucose being the only sugar unit; (c)b-glucosidic bonds being the main type of linkages; (d) theperiplasmic concentration increasing in...

Báo cáo y học: "Use of chinese and western over-the-counter medications in Hong Kong"

... professionals is a dominant factor in defining, controlling and scoping the work of theallied health professionals [21,22] as extending pharma-cists’ roleinprimarycaremayaffecttheautonomyandcontrol ... status, chronic dis-ease status, smoking, drinking, exercise habit, possession of Chinese and/ or western medicine insurance coverage, and income (Table 3). Multinomial logistic regressionanalysis ... establishment of integrated pre-scribing and dispensing service by western medicinepractitioners and pharmacistsunderthesameroofinboth private and public sectors but this would requiremuch research and...

Báo cáo y học: "Comparison between single antiplatelet therapy and combination of antiplatelet and anticoagulation therapy for secondary prevention in ischemic stroke patients with antiphospholipid syndrome"

... years. The cumulative incidence of stroke in patients with single antiplatelet treatment was higher than that in patients receiving the combination of antiplatelet and antico-agulation therapy ... recurrent thrombotic infarction in the combination of antiplatelet and anticoagulation ther-apy group showed an INR before the recurrence of 2.0, so the possibility of inadequate treatment ... re-ported the results of the first randomized, dou-ble-blind, controlled trial of two different intensities of warfarin treatment on the prevention of recurrent thrombotic events in patients with...

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