scholarly journals Chemical and Biological Properties of Paddy Soil Treated with Herbicides and Pyroligneous Acid

2015 ◽  
Vol 7 (4) ◽  
Author(s):  
H. R. L. Benzon ◽  
M. R. U. Rubenecia ◽  
Jr. V. U. Ultra ◽  
Sang Chul Lee
Keyword(s):  
Paddy Soil ◽  
Biological Properties ◽  
Pyroligneous Acid

Change in water extractable organic carbon and microbial PLFAs of biochar during incubation with an acidic paddy soil

Soil Research ◽  
2015 ◽  
Vol 53 (7) ◽  
pp. 763 ◽  
Author(s):  
Ming Li ◽  
Ming Liu ◽  
Stephen Joseph ◽  
Chun-Yu Jiang ◽  
Meng Wu ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Paddy Soil ◽  
Reduction Rate ◽  
Chemical Properties ◽  
Nutrient Status ◽  
Biological Properties ◽  
Uv Absorbance ◽  
Water Extractable Organic Carbon ◽  
Microbial Plfas ◽  
Water Extractable

Biochar has been considered to affect the transformation of soil organic carbon, soil microbial activity and diversity when applied to soil. However, the changes in chemical and biological properties of biochar itself in soil have not been fully determined. In this study, various biochar samples were obtained from three crop straws (rice, peanut and corn) and two wood chips (bamboo and pine), and incubated with an acidic paddy soil. We examined the changes of biochar water extractable organic carbon (WEOC) content and its ultraviolet (UV) absorbance at 280 nm during incubation period, and also investigated the microbial phospholipid fatty acids (PLFAs) profile of biochar after 75 days of incubation. The WEOC content of biochars decreased at the end of incubation, except for the biochar pyrolysed from bamboo chips at 400°C. An average reduction rate of 61.2% in WEOC concentration for straw biochars occurred within the first 15 days, while no significant change was observed for all biochars between day 15 and 45, and a slight increase in WEOC occurred for all biochars in the last 30 days. There was a positive relationship between biochar WEOC content and its UV absorbance properties. The microbial PLFAs concentrations of biochars varied from 15.56 to 60.35 nmol g–1, and there was a greater abundance in content and species for corn straw biochars than for the other types of biochars. General bacteria were the dominant microbial group that colonised biochar sample, while gram-positive bacterial and fungi were less in abundance. The chemical properties of fresh biochar were well correlated with total PLFAs concentrations, and significantly related to the composition of microbial community. We concluded that the WEOC component of most biochars change within such short-term application to soil, and the WEOC in combined with the pH and nutrient status of biochar, can alter the type and abundance of microorganisms that colonised biochar.

Three Dimensional structure and organization of diploid chromosomes by optical section microscopy

1987 ◽  
Vol 45 ◽  
pp. 633-635
Author(s):  
David A. Agard ◽  
Yasushi Hiraoka ◽  
John W. Sedat
Keyword(s):  
Dimensional Space ◽  
Three Dimensional ◽  
Developmental State ◽  
Mitotic Cell ◽  
Biological Properties ◽  
Dimensional Structure ◽  
Specific Gene ◽  
Three Dimensional Structure ◽  
Complementary Techniques ◽  
Dynamic Structures

In an effort to understand the complex relationship between structure and biological function within the nucleus, we have embarked on a program to examine the three-dimensional structure and organization of Drosophila melanogaster embryonic chromosomes. Our overall goal is to determine how DNA and proteins are organized into complex and highly dynamic structures (chromosomes) and how these chromosomes are arranged in three dimensional space within the cell nucleus. Futher, we hope to be able to correlate structual data with such fundamental biological properties as stage in the mitotic cell cycle, developmental state and transcription at specific gene loci.Towards this end, we have been developing methodologies for the three-dimensional analysis of non-crystalline biological specimens using optical and electron microscopy. We feel that the combination of these two complementary techniques allows an unprecedented look at the structural organization of cellular components ranging in size from 100A to 100 microns.

Membrane–cytoskeleton interactions in cholesterol-dependent domain formation

2015 ◽  
Vol 57 ◽  
pp. 177-187 ◽  
Author(s):  
Jennifer N. Byrum ◽  
William Rodgers
Keyword(s):  
Biological Properties ◽  
Membrane Rafts ◽  
Membrane Domains ◽  
Biological Functions ◽  
Membrane Cytoskeleton ◽  
Heterogeneous Structures ◽  
Integral Role ◽  
Model Cell ◽  
Actomyosin Cytoskeleton ◽  
Dependent Domain

Since the inception of the fluid mosaic model, cell membranes have come to be recognized as heterogeneous structures composed of discrete protein and lipid domains of various dimensions and biological functions. The structural and biological properties of membrane domains are represented by CDM (cholesterol-dependent membrane) domains, frequently referred to as membrane ‘rafts’. Biological functions attributed to CDMs include signal transduction. In T-cells, CDMs function in the regulation of the Src family kinase Lck (p56lck) by sequestering Lck from its activator CD45. Despite evidence of discrete CDM domains with specific functions, the mechanism by which they form and are maintained within a fluid and dynamic lipid bilayer is not completely understood. In the present chapter, we discuss recent advances showing that the actomyosin cytoskeleton has an integral role in the formation of CDM domains. Using Lck as a model, we also discuss recent findings regarding cytoskeleton-dependent CDM domain functions in protein regulation.

Biological properties of the berries of five Juniperus species in Juniperus section from Turkey

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
N Miceli ◽  
MF Taviano ◽  
A Trovato ◽  
R De Pasquale ◽  
P Maimone ◽  
...  
Keyword(s):  
Biological Properties

Chemical composition and biological properties of Piper cabralanum C. DC. (Piperaceae)

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
D Moreira ◽  
F Candido ◽  
M Siqueira ◽  
C Quaresma ◽  
E Guimarâes ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Biological Properties

Characterization of Portuguese Propolis: Unraveling Biological Properties

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
CA Aguiar ◽  
AM Ferreira ◽  
R Oliveira ◽  
F Baltazar ◽  
A Cunha
Keyword(s):  
Biological Properties

Chemical constituents and biological properties of liverworts from South Africa

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
S Combrinck ◽  
J Linde ◽  
A Ludwiczuk ◽  
S Van Vuuren ◽  
J Van Rooy ◽  
...  
Keyword(s):  
South Africa ◽  
Chemical Constituents ◽  
Biological Properties

COUNTING TOTAL BACTERIA IN LAND ORGANIC WASTE HOUSEHOLD AND LAND INORGANIC WITH TOTAL PLATE COUNT METHOD (TPC)

2017 ◽  
Vol 4 (2) ◽  
pp. 87-91
Author(s):  
Ekamaida Ekamaida
Keyword(s):  
Soil Fertility ◽  
Bacterial Population ◽  
Organic Soil ◽  
Biological Properties ◽  
Plate Count ◽  
Bacterial Populations ◽  
Fertility Data ◽  
Plate Count Method ◽  
The Mean ◽  
Total Bacteria

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

BIOLOGICAL PROPERTIES OF ST C 407, A NEW CORTISOL DERIVATIVE

1969 ◽  
Vol 61 (1_Suppl) ◽  
pp. S87 ◽  
Author(s):  
H.-G. Kraft ◽  
J. Harting
Keyword(s):  
Biological Properties
Sign in / Sign up

Export Citation Format

Share Document