scholarly journals Silver(I) Binding Properties of Organic Soil Materials Are Different from Those of Isolated Humic Substances

2016 ◽  
Vol 50 (14) ◽  
pp. 7453-7460 ◽  
Author(s):  
Dan B. Kleja ◽  
Satomi Nakata ◽  
Ingmar Persson ◽  
Jon Petter Gustafsson
2012 ◽  
Vol 66 (12) ◽  
pp. 2666-2673 ◽  
Author(s):  
Izabella Pisarek ◽  
Mariusz Głowacki ◽  
Małgorzata Czernia

This study showed the effect of Pleurotus ostreatus on the external organic matter (OM) transformation processes. The kinetics of these changes were determined. The experiment was conducted as 42-day pot experiment done in four combinations (with four replications). The four combinations of different substrates were: (1) organic, (2) composted hay, (3) organic soil + composted hay, (4) organic soil + composted hay + lead. The study results showed that P. ostreatus had the ability to transform external OM as well as metal–organic complexes. These transformations were reflected in the constant rate of characterized changes and correlation coefficients. The study also indicated the direction of the external OM transformation. The direction leads to the selective oxidation of aliphatic structures, and an increase in humic substances which are resistant to oxidation. The study also identified the negative impact of lead on the ability of P. ostreatus to transform humic substances. The impact of lead was expressed as the lower value of the rapid rate constant k1 in objects enriched with lead acetate.


2009 ◽  
Vol 43 (5) ◽  
pp. 1393-1399 ◽  
Author(s):  
André van Zomeren ◽  
Amélia Costa ◽  
José Paulo Pinheiro ◽  
Rob N. J. Comans

2015 ◽  
Vol 17 (8) ◽  
pp. 1386-1395 ◽  
Author(s):  
Takumi Saito ◽  
Motoki Terashima ◽  
Noboru Aoyagi ◽  
Seiya Nagao ◽  
Nobuhide Fujitake ◽  
...  

We have revealed distinctive physicochemical and ion-binding properties of humic and fulvic acids from deep sedimentary groundwater.


Author(s):  
Martin Poenie ◽  
Akwasi Minta ◽  
Charles Vorndran

The use of fura-2 as an intracellular calcium indicator is complicated by problems of rapid dye leakage and intracellular compartmentalization which is due to a probenecid sensitive anion transporter. In addition there is increasing evidence for localized microdomains of high calcium signals which may not be faithfully reported by fura-2.We have developed a new family of fura-2 analogs aimed at addressing some of these problems. These new indicators are based on a modified bapta which can be readily derivatized to produce fura-2 analogs with a variety of new properties. The modifications do not affect the chromophore and have little impact on the spectral and metal binding properties of the indicator. One of these new derivatives known as FPE3 is a zwitterionic analog of fura-2 that can be loaded into cells as an acetoxymethyl ester and whose retention in cells is much improved. The improved retention of FPE3 is important for both cuvettebased measurements of cell suspensions and for calcium imaging.


1998 ◽  
Vol 36 (5) ◽  
pp. 291-298 ◽  
Author(s):  
DE LUCCA ◽  
BLAND ◽  
JACKS ◽  
GRIMM ◽  
WALSH

Planta Medica ◽  
2008 ◽  
Vol 74 (03) ◽  
Author(s):  
VLM Madgula ◽  
B Avula ◽  
X Fu ◽  
XC Li ◽  
TJ Smillie ◽  
...  

2017 ◽  
Vol 4 (2) ◽  
pp. 87-91
Author(s):  
Ekamaida Ekamaida

The soil fertility aspect is characterized by the good biological properties of the soil. One important element of the soil biological properties is the bacterial population present in it. This research was conducted in the laboratory of Microbiology University of Malikussaleh in the May until June 2016. This study aims to determine the number of bacterial populations in soil organic and inorganic so that can be used as an indicator to know the level of soil fertility. Data analysis was done by T-Test that is by comparing the mean of observation parameter to each soil sample. The sampling method used is a composite method, which combines 9 of soil samples taken from 9 sample points on the same plot diagonally both on organic soil and inorganic soil. The results showed the highest bacterial population was found in total organic soil cfu 180500000 and total inorganic soil cfu 62.500.000


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