patterns in dissolved organic matter lability and consumption across aquatic ecosystems
Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge
... tion New tion ba ba bat bat incu incu incu incu 1st 2nd 3rd 4th Figure Change in amount of organic carbon on PAC for every incubation by glucose According to Sutherland (2001), extracellular polymers ... 3,5-DCP concentrations in the PACT and the control reactors during and after the shock loading of 3,5-DCP The peak concentration in the PACT and the control reactors were 6.0 and 45.3 mg l-1, respectively ... concentration during and after the shock loading of 3,5-DCP onto PACT and control reactors - 252 - Journal of Water and Environment Technology, Vol.1, No.2, 2003 3.2 Effects of dissolved organic matter...
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Controls of bioavailability and biodegradability of dissolved organic matter in soils
... Bioavailability; Biodegradation; Dissolved organic matter; DOC Introduction In the past 10 years, much progress has been made in the understanding of dissolved organic matter (DOM) functions and ... in the chemical composition of dissolved organic matter in organic forest floor layer leachates of old-grouth Scots pine (Pinus sylvestries L.) and European beech (Fagus sylvatica L.) stand in ... TOCa inoculum Pinney et al., 2000b Zsolnay and Steindl, 1991d; Qualls and Haines, 1992; Boissier and Fontvieille, 1993; Raymond and Bauer, 2001 inoculum + nutrients Zsolnay, 1996; Marschner and...
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Fouling and accumulation of dissolved organic matter in membrane bioreactors
... production, and smaller plant size However, membrane fouling remains the principal obstacle constraining their more extensive and large-scale application Dissolved organic matter (DOM), mainly soluble ... Characterizing Dissolved Organic Matter Dissolved organic matter (DOM) can range in molecular weight from a few hundred to ten thousand daltons (Da), which is in the colloidal size range (Leenheer and ... in which DOM is characterized in water and its inorganic constituents, and studies of DOM fractions isolated from water and inorganic constituents (Leenheer and Croué, 2003) 2.3.1 DOM Profiling...
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Biological Alteration of Zinc Complexation Characteristics of Dissolved Organic Matter in Domestic Wastewater Treatment Plant Effluent under River Water Environment
... seems to fit into two linear portions indicating two classes of binding sites In contrast, DOMs in the samples after and weeks fitted to a single line, signifying only one type of binding site It ... then linearly transformed using the Scatchard equation, as explained in Chaminda et al (2010) and in the Appendix of this paper RESULTS AND DISCUSSION Biodegradability of zinc binding sites in river ... dissociating metal, including free metal ion, inorganic complexed metal and some weak organic complexed metals Although the relationship between the free ion, [M2+], and [M'] can be determined for inorganic...
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Influence of Phosphorus Concentration on the Biodegradation of Dissolved Organic Matter in Lake Biwa, Japan
... dissolved organic matter (DOM) is pointed out (Imai, 2002) On the other hand, Takahashi (1999) reported that dissolved organic carbon (DOC) in 1997 did not increase - 216 - Journal of Water and ... No.2, 2011 in comparison with that in 1985 However, as the particle retention diameter of filter used for separating dissolved matter and particulate matter in 1985 was larger than in 1999 in Takahashi's ... pathways to increase DOM in the lake are as follows: (1) increase in the DOM loading from the watershed, (2) increase in internal production of DOM, (3) decrease in DOM discharge from the lake, and (4)...
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Báo cáo lâm nghiệp: "Effect of tree species substitution on organic matter biodegradability and mineral nutrient availability in a temperate topsoil" pptx
... at the beginning of incubation, and every days over the 20th day, mL of gas were sampled in the flask headspace with a syringe and injected immediately into the CO2 analyser (BINOS 1004 Infrared ... are mainly associated to organic matter, and not with the clay minerals The incubation of the A1 (0–5 cm) layer originating from the same type of soil under different forest stands growing in similar ... species on organic matter biodegradability and consequently on mineral element and major nutriments release and availability The results showed that carbon mineralization and nitrogen mineralization...
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Correlation of the partitioning of dissolved organic matter fractions with the desorption of cd
... particular pH increasing pH The y-axes in Fig 2a and c are in log form and thus show the striking increase in soluble HA as a function of pH For the 18 soils studied, the increase in soluble HA in the ... environmental issues involving trace metal contamination including site remediation, modeling, and risk assessment Several studies have also included the effects of Ca on the binding and dissolution ... elsewhere (Hsu and Lo, 2000) for Cu, Mn, and Zn in compost extracts and for Cd and Cu in soils (Salam and Helmke, 1998) The increase in solubility of Cu and Pb could be due to the pH-induced solubilization...
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Effects of cattle and poultry manures on organic matter content and adsorption complex of a sandy soil under cassava cultivation (Manihot esculenta, Crantz) doc
... the organic matter The increase in the organic matter induced by the amendment is due to the manures which has three roles of organic matter sources, of protection of the soil against erosion and ... 55 cm)) and analyzed at the laboratory These taking away were made at cuttings planting time in June The Table shows initial soil physical and chemical (carbon, nitrogen and organic matter content) ... the loss of soil organic carbon, particularly C and N, under intensive cropping and continuous cultivation The decline in soil productivity as a result of continuous cultivation in sub-Saharan...
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Báo cáo khoa học: "Organic matter distribution and nutrient fluxes within a sweet chestnut (Castanea sativa Mill.) stand of the Sierra de Gata, Spain" pps
... than in the past, involving larger amounts of nutrients in the biogeochemical cycle of forests; (2) the increased nutrient input from dry atmospheric deposition and by rain, and their recycling ... social interest in forest conservation has increased Efforts have been made to save and improve existing chestnut stands; in this line, research has played a significant role in improving contributions ... physical and physicochemical processes of decay occur in summer (losses of dry matter due to animals, water or winds, could be limited) Table VII shows changes in remaining organic matter (O.M.) and...
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Tài liệu Body Size: The Structure and Function of Aquatic Ecosystems pptx
... for reproduction and/ or growth However, this method of increasing energy gain will produce diminishing returns if the costs of producing and maintaining a larger feeding structure increase more ... scaling of gain to costs in a similar way to that discussed above, but invokes a quadratic increase in pumping costs with filter size, in comparison to a linear increase in gain as the driving ... natural and human-induced environmental gradients Colin R Townsend and Ross M Thompson Body size and predatory interactions in freshwaters: scaling from individuals to communities Guy Woodward and...
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Tài liệu CONSUMER PREFERENCE AND CONSUMPTION OF ORGANIC PRODUCTS IN THE EASTERN CAPE PROVINCE OF SOUTH AFRICA docx
... 60 years This indicate that age is considered important and understanding the age dynamics and consumption of organics will go a long way in influencing the target market and marketing approach ... be a marked increase in demand for fresh vegetables, fresh fruits meat and meat products and milk and milk products in the Transkei According to GROLINK (2006) the growth in the organic sector ... While most sales are in North America and Europe, production is global with developing countries producing and exporting ever-increasing shares Due to expanding markets and attractive price premiums,...
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Input and output of dissolved organic and inorganic nitrogen in subtropical forests of South China under high air pollution docx
... deposition and DIN leaching simultaneously occurred in the rainy season (March to August) and monthly DIN concentrations and fluxes in leaching were positively related to those in throughfall in all ... demand in the young aggrading forests, albeit intensive rain in the growing season is likely to enhance N leaching in these forests BGD 4, 4135–4171, 2007 Introduction 10 15 20 25 Increases in ... leaching and monthly throughfall input for DIN Figure Relationships mixed monthly solution leaching and DHSBR of southern China (a) (a) and DON (b) in the pine, between and old-growth forests inmonthly...
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Báo cáo khoa học: "Organic matter and nitrogen dynamics in a mature forest of common beech in the Sierra de la Demanda, Spain" doc
... X t and X are the masses remaining at time t and time zero, respectively [61] The organic matter 305 Organic matter and nitrogen dynamics in a beech forest remaining on the soil was calculated ... IR index was found at the beginning of autumn and the lowest in spring Accordingly, the periods showing the highest percentages of N may be intimately correlated with those in which leaf shedding ... can be defined as turnover, and has a value of 0.29 307 Organic matter and nitrogen dynamics in a beech forest Table VII Dry matter loss and nitrogen content in litterbags at beech stand Days...
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Báo cáo khoa học: "Organic matter dynamics in beech and pine stands of mountainous Mediterranean climate" docx
... [41]Rodin L.E., Bazilevich N.I., Production and mineral in terrestrial 1967, 288 pp cycling vegetation, Oliver and Boyd, Edinburgh, [46] Singh K.P., Litter production and nutrient turnover in deciduous ... description The experimental site is located in the Sierra de la Demanda mountains in the province of Burgos and Logroño in northern Spain Its mountainous topography is located on the north-west ... con- siderably in depth, clay contents increasing with depth and is classified as Humic Acrisol [12] These and other soil characteristics are indicated in table III pine trees (Pinus sylvestris...
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Kinetics of natural organic matter as the initiator, promoter and inhibitor in water ozonation and its influences on the removal of ibuprofen
... foreign compounds acting as the initiator, promoter and inhibitor [26] Considering all reactions leading to the decomposition of ozone and assuming that all the radicals in the chain reactions are ... constants of initiator, promoter and inhibitor in water ozonation 21 2.4.2 Determination of the rate constants of NOM isolates and natural water NOM as the initiator, promoter and inhibitor ... Hin, Mdm Susan Chia, Mdm Tan Hwee Bee, Mr Sukiantor bin Tokiman, Mr Mohamed Sidek bin Ahmad, Mr Chandrasegaran S/O Govindaraju and Mdm Tan Xiaolan for their generous help in creating a safe and...
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Basic sentence patterns in English and Vietnamese
... object and indirect object, object and complement, and 12 between intransitive and transitive verb and how to use them in one sentence Learners must understand main elements and their functions in ... in Vietnamese and English sentence is different In my opinion, the verb in English sentence is more complex than in Vietnamese because we must distinguish intransitive verb, transitive verb and ... omitting subject and object in their translation can be: • not master the basic sentence patterns in two languages • not distinguish between intransitive verb and transitive verb • not distinguish...
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Removal of Nutrients, Organic Matter and Heavy Metals from Paddy Field Drainage by Charcoal
... = Fe, lead = Pb and zinc = Zn) in the water samples were analyzed in the laboratory In this report we analyzed and discussed mainly total elements including dissolved matters, since the removal ... containing wood charcoal as an absorbent was designed, and its ability to remove organic matter, nutrients, and heavy metals in a test paddy field was investigated The following results were obtained: ... enable the charcoal to remove organic matter, nutrients and heavy metals in the drainage from a paddy field, and its effects were investigated in situ MATERIALS AND METHODS Test paddy field The...
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Leaching of arsenic in response to organic matter contamination in groundwater treatment practice
... provided increased adsorption surfaces and mechanical straining as well Organic matter causes chemical leaching of arsenic in AIRU The leaching of arsenic and iron in the presence of organic matter in ... with high organic contamination is even used in drinking water treatment in the rural areas of Bangladesh Moreover, the concentration of organic matter is sometimes unnoticed in the installation ... arsenic and iron removal units (AIRU) MATERIALS AND METHODS Field study Preliminary minor-scale field inspection was made in Bangladesh to presume the level of organic matter contaminations in the...
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Simultaneous hydrogen production and consumption in Anaerobic mixed culture fermentation
... decrease in butyrate and hydrogen production and an increase in acetate and ethanol with increasing pH The authors agree that the results are reproducible, reversible and independent of the inoculum ... Q = quinine pool; QH2 = quinol ISSN 2076-2895 (Print), ISSN 2076-2909 (Online) ©2012 International Energy & Environment Foundation All rights reserved International Journal of Energy and Environment ... acetate and butyrate concentration, low reduced products concentration, and low hydrogen yield, indicating homoacetogenic activity The coexistence of hydrogen producer and consumers in a continuous...
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Tìm thêm: xác định các nguyên tắc biên soạn khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng 9 tr 25