Influence on Uranium(VI) migration in soil by iron and manganese salts of humic acid: Mechanism and behavior

2020 ◽  
Vol 256 ◽  
pp. 113369 ◽  
Author(s):  
Yuan-yuan Zhang ◽  
Jun-wen Lv ◽  
Xue-jie Dong ◽  
Qi Fang ◽  
Wen-fa Tan ◽  
...  
Keyword(s):  
Humic Acid ◽  
Manganese Salts ◽  
And Behavior ◽  
Iron And Manganese

DISTRIBUTION AND PROPERTIES OF ORGANIC FRACTIONS IN SELECTED ALBERTA SOILS

1969 ◽  
Vol 49 (1) ◽  
pp. 129-141 ◽  
Author(s):  
L. E. Lowe
Keyword(s):  
Humic Acid ◽  
Organic Matter Content ◽  
Matter Content ◽  
Organic P ◽  
Soil Zone ◽  
Electrophoretic Behavior ◽  
P Content ◽  
Organic Fractions ◽  
Carbohydrate Components ◽  
And Behavior

Nine soils, representing the dominant groups in the major soil zones of Alberta, were characterized with respect to the distribution and selected properties of organic fractions. Detailed results are presented only for A horizon samples. Well humified materials in surface horizons exhibited remarkable similarities despite the range of conditions under which they accumulated.In general, differences between organic components of soils within a soil zone were much less distinct than differences between soil zones. In the sequence Gray Wooded to Black to Brown soil zones, Ah horizons showed decreasing organic matter content, decreasing hexose and pentose content, but little change in organic P content or hexose as percent of total organic matter.De-ashed humic acid fractions showed little variation between soils with respect to elemental composition, functional groups, amino acid and carbohydrate components, electrophoretic behavior or infrared, spectra. Optical properties and behavior toward electrolytes of humic acid solutions showed some differences between soil zones.

scholarly journals DISEMINASI TEKNOLOGI ASAM HUMAT PADA BUDIDAYA PADI SAWAH DI KECAMATAN PALIMANAN KABUPATEN CIREBON

2020 ◽  
Vol 1 (3) ◽  
pp. 337-346
Author(s):  
Diana Apriliya ◽  
Oeng Anwarudin ◽  
Nazaruddin Nazaruddin
Keyword(s):  
Humic Acid ◽  
Secondary Data ◽  
Internal Factors ◽  
Cluster Technique ◽  
Technology Dissemination ◽  
Dissemination Process ◽  
The Government ◽  
Farmer Education ◽  
And Behavior ◽  
The Village

DISEMINASI TEKNOLOGI ASAM HUMAT PADA BUDIDAYA PADI SAWAH DI KECAMATAN PALIMANAN KABUPATEN CIREBON Strategic steps to increase rice production in the government continue to be increased to meet domestic needs through the dissemination of technological innovation. One solution is the introduction of humic acid technology to streamline and improve the soil considering that the Palimanan District has the potential for lowland rice that can be developed. This study aims to analyze the description of technology dissemination and behavior of farmers, analyze the factors that influence the technology dissemination and behavior of farmers in use of humic acid in rice cultivation, and develop strategies to improve the process of technology dissemination to improve the behavior of farmers in the use of humic acid. This research was conducted in the village of Cilukrak, Palimanan sub-district, Cirebon regency, from April to June 2020. The research sample was 48 farmers determined through the Random Sampling Cluster technique. The variables of this study consisted of internal factors, external factors, the dissemination process, and farmer's behavior. Data collection is done through primary and secondary data. Data were processed using descriptive statistical analysis techniques and multiple regression and Kendall's W. The results showed that the process of dissemination of humic acid technology 72.9% included in the high category and the behavior of farmers 70.2% included in the medium category. Factors that significantly affect farmer's behavior are farmer education, land area, and dissemination process. Strategies to increase dissemination of humic acid and farmer's behavior can be done through increasing the intensity of farmer groups' meetings and functions.

How Homo economicus lost her mind and how we can revive her

2018 ◽  
Vol 41 ◽  
Author(s):  
Peter DeScioli
Keyword(s):  
Economic Thought ◽  
History Of Economic Thought ◽  
Homo Economicus ◽  
Economic Theories ◽  
Target Article ◽  
History Of ◽  
The Mind ◽  
And Behavior

AbstractThe target article by Boyer & Petersen (B&P) contributes a vital message: that people have folk economic theories that shape their thoughts and behavior in the marketplace. This message is all the more important because, in the history of economic thought, Homo economicus was increasingly stripped of mental capacities. Intuitive theories can help restore the mind of Homo economicus.

The parent-offspring microbiome and neurobehavioral development

2019 ◽  
Vol 42 ◽  
Author(s):  
Jeffrey R. Alberts ◽  
Christopher Harshaw ◽  
Gregory E. Demas ◽  
Cara L. Wellman ◽  
Ardythe L. Morrow
Keyword(s):  
Mammalian Species ◽  
Social Emotional ◽  
Behavioral Measures ◽  
Neurobehavioral Development ◽  
Emotional Function ◽  
Neurobehavioral Outcomes ◽  
Methodological Approaches ◽  
And Behavior

Abstract We identify the significance and typical requirements of developmental analyses of the microbiome-gut-brain (MGB) in parents, offspring, and parent-offspring relations, which have particular importance for neurobehavioral outcomes in mammalian species, including humans. We call for a focus on behavioral measures of social-emotional function. Methodological approaches to interpreting relations between the microbiota and behavior are discussed.

TEM evaluation of graded SixGe1-x heterolayers

1991 ◽  
Vol 49 ◽  
pp. 894-895
Author(s):  
N. David Theodore ◽  
Mamoru Tomozane ◽  
Ming Liaw
Keyword(s):  
Heterojunction Bipolar Transistors ◽  
Gas Flow ◽  
Field Effect Transistors ◽  
Chemical Vapor ◽  
Dark Field ◽  
Bipolar Transistors ◽  
Structural Quality ◽  
Weak Beam ◽  
Transmission Electron ◽  
And Behavior

There is extensive interest in SiGe for use in heterojunction bipolar transistors. SiGe/Si superlattices are also of interest because of their potential for use in infrared detectors and field-effect transistors. The processing required for these materials is quite compatible with existing silicon technology. However, before SiGe can be used extensively for devices, there is a need to understand and then control the origin and behavior of defects in the materials. The present study was aimed at investigating the structural quality of, and the behavior of defects in, graded SiGe layers grown by chemical vapor deposition (CVD).The structures investigated in this study consisted of Si1-xGex[x=0.16]/Si1-xGex[x= 0.14, 0.13, 0.12, 0.10, 0.09, 0.07, 0.05, 0.04, 0.005, 0]/epi-Si/substrate heterolayers grown by CVD. The Si1-xGex layers were isochronally grown [t = 0.4 minutes per layer], with gas-flow rates being adjusted to control composition. Cross-section TEM specimens were prepared in the 110 geometry. These were then analyzed using two-beam bright-field, dark-field and weak-beam images. A JEOL JEM 200CX transmission electron microscope was used, operating at 200 kV.

Formation of defects in implanted hipox-structures

1992 ◽  
Vol 50 (2) ◽  
pp. 1406-1407
Author(s):  
Peter Pegler ◽  
N. David Theodore ◽  
Ming Pan
Keyword(s):  
High Pressure ◽  
Cross Section ◽  
Semiconductor Devices ◽  
Silicon Substrates ◽  
Processing Conditions ◽  
Pressure Oxidation ◽  
Deep Trench ◽  
Local Oxidation ◽  
Trench Isolation ◽  
And Behavior

High-pressure oxidation of silicon (HIPOX) is one of various techniques used for electrical-isolation of semiconductor-devices on silicon substrates. Other techniques have included local-oxidation of silicon (LOCOS), poly-buffered LOCOS, deep-trench isolation and separation of silicon by implanted oxygen (SIMOX). Reliable use of HIPOX for device-isolation requires an understanding of the behavior of the materials and structures being used and their interactions under different processing conditions. The effect of HIPOX-related stresses in the structures is of interest because structuraldefects, if formed, could electrically degrade devices.This investigation was performed to study the origin and behavior of defects in recessed HIPOX (RHIPOX) structures. The structures were exposed to a boron implant. Samples consisted of (i) RHlPOX'ed strip exposed to a boron implant, (ii) recessed strip prior to HIPOX, but exposed to a boron implant, (iii) test-pad prior to HIPOX, (iv) HIPOX'ed region away from R-HIPOX edge. Cross-section TEM specimens were prepared in the <110> substrate-geometry.

Colloidal systems in soils

1994 ◽  
Vol 52 ◽  
pp. 64-65
Author(s):  
J. Thieme ◽  
J. Niemeyer ◽  
P. Guttman
Keyword(s):  
Clay Minerals ◽  
Polymeric Materials ◽  
Spatial Arrangement ◽  
High Specific Surface Area ◽  
Turnover Rates ◽  
Colloidal Systems ◽  
Chemical Conditions ◽  
Aggregation Phenomena ◽  
Iron And Manganese ◽  
Soil Colloids

In soil science the fraction of colloids in soils is understood as particles with diameters smaller than 2μm. Clay minerals, aquoxides of iron and manganese, humic substances, and other polymeric materials are found in this fraction. The spatial arrangement (microstructure) is controlled by the substantial structure of the colloids, by the chemical composition of the soil solution, and by thesoil biota. This microstructure determines among other things the diffusive mass flow within the soils and as a result the availability of substances for chemical and microbiological reactions. The turnover of nutrients, the adsorption of toxicants and the weathering of soil clay minerals are examples of these surface mediated reactions. Due to their high specific surface area, the soil colloids are the most reactive species in this respect. Under the chemical conditions in soils, these minerals are associated in larger aggregates. The accessibility of reactive sites for these reactions on the surface of the colloids is reduced by this aggregation. To determine the turnover rates of chemicals within these aggregates it is highly desirable to visualize directly these aggregation phenomena.

Language and Behavior Disorders in School-Age Children: Comorbidity and Communication in the Classroom

2012 ◽  
Vol 13 (4) ◽  
pp. 111-119 ◽  
Author(s):  
Alexandra Hollo
Keyword(s):  
Language Impairment ◽  
Mental Health Problems ◽  
Language Disorder ◽  
School Age Children ◽  
School Age ◽  
Social Emotional ◽  
Behavioral Support ◽  
School Professionals ◽  
Development Characteristic ◽  
And Behavior

Language development is the foundation for competence in social, emotional, behavioral, and academic performance. Although language impairment (LI) is known to co-occur with behavioral and mental health problems, LI is likely to be overlooked in school-age children with emotional and behavioral disorders (EBD; Hollo, Wehby, & Oliver, in press). Because language deficits may contribute to the problem behavior and poor social development characteristic of children with EBD, the consequences of an undiagnosed language disorder can be devastating. Implications include the need to train school professionals to recognize communication deficits. Further, it is critically important that specialists collaborate to provide linguistic and behavioral support for students with EBD and LI.

Sign in / Sign up

Export Citation Format

Share Document