scholarly journals Recovery time from adaptation after sniffing at high concentration level of five odorants used for T&T olfactmeter

1990 ◽  
Vol 26 (Supplement) ◽  
pp. 160-161
Author(s):  
S. Ohnishi ◽  
Y. Kurioka
Keyword(s):  
Recovery Time ◽  
Concentration Level ◽  
High Concentration

CONCENTRATION AND REGIONALIZATION OF AGRICULTURE IN THE WORLD

2021 ◽  
Vol XIII (1) ◽  
pp. 36-47
Author(s):  
Magdalena Golonko ◽  
Marcin Wysokiński ◽  
Arkadiusz Gromada
Keyword(s):  
South America ◽  
Agricultural Production ◽  
Concentration Level ◽  
Relative Increase ◽  
Animal Production ◽  
Agricultural Products ◽  
Plant Production ◽  
High Concentration ◽  
The World ◽  
Research Period

The main purpose of the article was to assess the regionalization of agricultural production in the world and the changes occurring in this aspect. The article presents the concentration level of agricultural production in the world by continent. The source of materials was data from FAOSTAT. The research period covered the years 2004 - 2016. In the analyzed period, the value of gross agricultural production doubled. Various trends were observed within the period studied. In the years 2004-2010, in all regions of the world, there was an increase in gross production of agriculture, while in the period 2010-2016 only in two – North America and Asia. It was noted that there was a high concentration of agricultural production, mainly concentrated in Asia and Europe. In the analyzed period, there was a relative increase in the share of agricultural production in Asia and South America as compared to other regions. Individual groups of agricultural products, such as cereals and animal production, were also analyzed. In both cases, concentration was different. The pace of concentration in animal production was higher than in plant production.

scholarly journals Label-Free Detection of a Biomarker with Piezoelectric Micro Cantilever Based on Mass Micro Balancing

2008 ◽  
Vol 13 (5) ◽  
pp. 259-264 ◽  
Author(s):  
Yeolho Lee ◽  
Sangkyu Lee ◽  
Hyejung Seo ◽  
Sangmin Jeon ◽  
Wonkyu Moon
Keyword(s):  
Concentration Level ◽  
Critical Concentration ◽  
Target Material ◽  
Label Free ◽  
High Concentration ◽  
Cantilever Sensor ◽  
Pzt Film ◽  
Sensor Structure ◽  
Label Free Detection ◽  
Micro Cantilever

With a piezoelectric micro cantilever sensor, a biomarker for various cancers is detected up to the concentration level required to determine a disease by using the mass micro balancing whose principle is that change of mechanical vibrant frequency is measured due to a target material attached on a sensor structure. The used piezoelectric micro cantilever sensor is designed so as to have the sufficient values of mass sensitivity and reliability. The used piezoelectric film, which acts as both sensor and actuator, is a plumbum zirconate titanate (PZT). Geometrical dimension of the micro cantilever is 100 μm (length) by 30 μm (width) by 5 μm (thickness). The 50-μm-long PZT film with thickness of 2.5 μm is covered from its root to its middle. Carcinoembryonic antigen (CEA), the biomarker for testing the sensor as label-free detection for pathological tests, is known as a biomarker for various cancers. The critical value of CEA concentration is known as 30 pM (5 ng/mL), and it is detected by the binding of antigen and antibody from high concentration to the critical concentration. From the results, the sensor could be applied to label-free detection sensors for pathological tests.

Effect of high concentration of organic and inorganic matters in landfill leachate on the treatment of heavy metals in very low concentration level

1997 ◽  
Vol 36 (12) ◽  
pp. 349-356 ◽  
Author(s):  
T. Urase ◽  
M. Salequzzaman ◽  
S. Kobayashi ◽  
T. Matsuo ◽  
K. Yamamoto ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Concentration Level ◽  
Water Environment ◽  
Limiting Factor ◽  
High Concentration ◽  
Landfill Leachates ◽  
Leachate Treatment ◽  
Surrounding Water ◽  
Low Concentration

Various heavy metals in the landfill leachates were measured up to very low concentration levels of micrograms per litre. Though no violation to Japanese effluent standards was found in respect of individual metal, leachate or treated leachate it still contains higher concentrations of total heavy metals than surrounding water environment. The effluent concentration after treatment was of the same order as raw leachate. Maximum metal solubilities in leachate were calculated taking the presence of inorganic metal complexes into account. Solubilities of metals were high enough and they were not the limiting factor determining concentrations after coagulation. The coagulation with higher pH was not successful in reducing concentration of leachate - origin - metals contrary to the case of pure chemical metals. The heavy metals especially nickel and copper in the leachate were associated with organic matter and consequently they remained in solution unless organic matter was removed. Application of nanofiltration to leachate treatment was studied. It was possible to separate metals from less toxic salts by low retention nanofiltration membranes.

The role of fulvic acids in phosphorus sorption and release from mineral particles

1996 ◽  
Vol 34 (7-8) ◽  
pp. 259-265 ◽  
Author(s):  
Marija Kastelan-Macan ◽  
Mira Petrovic
Keyword(s):  
Interstitial Water ◽  
Concentration Level ◽  
Fulvic Acids ◽  
Competitive Sorption ◽  
Phosphorus Sorption ◽  
High Concentration ◽  
Mineral Particles ◽  
Phosphate Desorption

The competitive sorption of phosphates and marine fulvic acids on mineral particles (sand, calcite, bentonite and hematite) has been studied under simulated estuarine conditions. Afterwards, the release and desorption of bound phosphates by solutions containing dissolved fulvic acids was determined. It was found out that due to the favorable sorption of fulvic acids onto minerals studied binding of phosphate was significantly decreased. Desorption experiments showed that fulvic acids, present at high concentration level, similar to that in interstitial water of an oxygenated sediment, increase phosphate desorption by 10-20%.

scholarly journals Practical study on the effect of educational games on ADHD students

2019 ◽  
Vol 6 (6) ◽  
pp. 48-57
Author(s):  
Ramiz Salama ◽  
Mohammed Elsayed
Keyword(s):  
Concentration Level ◽  
Educational Games ◽  
Negative Attitude ◽  
High Concentration ◽  
Adhd Treatment ◽  
Green Box

Rising kids’ concentrations is a hard task for both parents and teachers. We can achieve our goal of the game (Increasing kid's concentration level) by making the game surroundings a lot harder in the intercourse of the game, so we have here four kinds of surroundings for the kid to interact with: Green box: this is the main box for the kid to hit. Yellow box: this is a box with negative attitude that the kid should stay aware of. White box: this is a box for increasing time if he ran out of time. Red box: this is a rare box it's appears and disappears in a 1 second and requires a high concentration level to hit it. They abducted the hero's girlfriend and he got angry and try to restore her and free the planet from this disastrous occupation. Keywords: Educational Games, ADHD treatment, FPS Games.

scholarly journals Educational games for miss-concentration students (ADHD students)

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Mohamed Elsayed ◽  
Ramiz Salama
Keyword(s):  
Video Game ◽  
Game Design ◽  
Concentration Level ◽  
Educational Games ◽  
Negative Attitude ◽  
Main Role ◽  
Game Engine ◽  
High Concentration ◽  
Adhd Treatment ◽  
Teachers And Parents

Increasing a kid’s concentration is a major problem for both teachers and parents, but the presence of educational games solves almost 70% of this problem and the other percentage relies on teacher and parent roles to increase the kid’s concentration using different methods and this is the main role of our game here. Our game’s name is Cube Invasion and we derived its name out from its context because it is a 3D game with cubes which surround the kid’s player and he try to hit most of the boxes to get the highest score in a less time and tries not to lose to the time or not get the least amount of score to pass the level. We can achieve our goal of the game (increasing the kid’s concentration level) by making the game’s surroundings a lot harder in the intercourse of the game; so we have here four kinds of surroundings for the kid to interact with—green box: this is the main box for the kid to hit; yellow box: this is a box with a negative attitude that the kid should be aware of; white box: this is a box for increasing time if he runs out of time; red box: this is a rare box and it appears and disappears in a second and requires a high concentration level to hit it. We used Unity game engine for gaming control and programming because it is the most famous game engine right now and it provides a lot of helpful things for the kid to interact with. We use the after effects for the game design and development of both introduction video, game components and animation of the game. Our game storyline talks about a peaceful planet called Pill-earth where everyone loves each other. We have our hero and his lover (girlfriend) sitting in the park and all of a sudden an invasion of cubes comes to the planet to occupy it and spread hatred among the planet’s inhabitants. They abduct the hero’s girlfriend and he gets angry and tries to restore her and free the planet from this disastrous occupation. At last, he succeeds in killing the leader and restoring his lover and freeing the planet. This story makes the child interact more with the game.   Keywords: ADHD treatment, educational games, FPS games.

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