Effects of High-Oxygen-Level Process Gas (40% O2) on the Temperature and Strength Development of a Magnetite Pellet Bed during Pot Furnace Induration

Black willow (Salix nigra) stem cuttings are commonly used to stabilize eroded streambanks with survival dependent on rapid development of adventitious roots to maintain plant water balance, absorb nutrients, and provide anchorage and support especially during flood and drought events. Soaking cuttings in water prior to planting increases survival and growth rates, but it is not known whether oxygen content in the soaking water affects the rate of early root and shoot initiation and growth. A laboratory experiment tested the hypothesis that cuttings treated with high oxygen (>95% saturation, 8.62 mg O2l-1) soaking exhibit more rapid initiation and growth of roots and shoots than cuttings treated with low oxygen (<15% saturation, 1.24 mg O2l-1) soaking and control (unsoaked). Root initiation was enhanced in both high and low O2soaking treatments compared to control (100, 93, and 41%, respectively, n = 27). High O2soaking led to greater root length than low O2soaking during the fourth week after planting (26.5 and 12.3 cm on day 22; 27.7 and 19.1 cm on day 27, respectively). Shoot growth was greater in high O2compared to low O2soaking on days 36 and 56 after planting (9.3 and 6.3 cm on day 36, 10.7 and 7.2 cm on day 56, respectively). Shoot and root biomass production was stimulated in both soaking treatments, with 200% more biomass production by day 59 compared to control. Results of this study demonstrated that a high oxygen soaking treatment has potential for improving early root and shoot growth, and survival in willow cuttings planted at riparian restoration sites.

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PUSAT TERAPI OKSIGEN DENGAN PENERAPAN KONSEP GREEN BUILDING DI PULAU GILI IYANG MADURA

Arsitektura ◽

10.20961/arst.v15i1.11640 ◽

2017 ◽

Vol 15 (1) ◽

pp. 133

Author(s):

Vivi Aida ◽

Amin Sumadyo ◽

Ummul Mustaqimah

Keyword(s):

Water Conservation ◽

Oxygen Therapy ◽

Material Selection ◽

Green Building ◽

Building Design ◽

Oxygen Level ◽

Mass System ◽

Energy Efficiency And Conservation ◽

High Oxygen Level ◽

Therapy Center

Abstract: Gili Iyang Island has high oxygen level potential which is more than 20% with lower pollution percentage compared to other regions in Indonesia. The result of oxygen in Gilli Iyang Island was done by LAPAN in 2006 and BBTKL-PP in 2013. It reached 20,9% up to 21,5%. The oxygen level affects Gili Iyang Island becoming tourist destination to take oxygen therapy. However, the activity isn’t supported by adequate facilities, so that an oxygen therapy center is necessary to meet those needs. The design proposal rises a problem is designing a healthy oxygen therapy facility that hold the local natural circumstance. Environmental issues in Gili Iyang Island which is still pure and healthy responded by Green Building concept application in Oxygen Therapy Center. The Oxygen Therapy Center focusing on the application of green building concept to respond the environmental issue of Gili Iyang Island. The Green Building concept based on six criterias in accordance with the Greenship: Green Building Council Indonesia (GBCI): appropriate land use, energy efficiency and conservation, water conservation, resource and material cycle, health and comfort in space, and environmental management building. The concept is trying to afford a healthy and nature-synergy building design so than it can support oxygen therapy process and energy-saving building. The main design concepts are site cultivation, mass system, shape and appearance of the building, material selection, exterior of the building, also building utilities. Keywords: Gili Iyang Island, Oxygen Therapy, Green Building Concept, Greenship: Green Building Council Indonesia (GBCI)

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Effect of hyperoxic and hyperbaric conditions on the adenosinergic pathway and CD26 expression in rat

Journal of Applied Physiology ◽

10.1152/japplphysiol.00223.2015 ◽

2015 ◽

Vol 119 (2) ◽

pp. 140-147 ◽

Cited By ~ 8

Author(s):

Laurie Bruzzese ◽

Jean-Claude Rostain ◽

Laëtitia Née ◽

Jocelyne Condo ◽

Giovanna Mottola ◽

...

Keyword(s):

Plasma Concentration ◽

Cell Surface ◽

Oxygen Supply ◽

Oxygen Level ◽

Camp Production ◽

Hyperbaric Hyperoxia ◽

High Oxygen Level ◽

The Brain ◽

Hyperbaric Conditions

The nucleoside adenosine acts on the nervous and cardiovascular systems via the A2A receptor (A2AR). In response to oxygen level in tissues, adenosine plasma concentration is regulated in particular via its synthesis by CD73 and via its degradation by adenosine deaminase (ADA). The cell-surface endopeptidase CD26 controls the concentration of vasoactive and antioxidant peptides and hence regulates the oxygen supply to tissues and oxidative stress response. Although overexpression of adenosine, CD73, ADA, A2AR, and CD26 in response to hypoxia is well documented, the effects of hyperoxic and hyperbaric conditions on these elements deserve further consideration. Rats and a murine Chem-3 cell line that expresses A2AR were exposed to 0.21 bar O2, 0.79 bar N2 (terrestrial conditions; normoxia); 1 bar O2 (hyperoxia); 2 bar O2 (hyperbaric hyperoxia); 0.21 bar O2, 1.79 bar N2 (hyperbaria). Adenosine plasma concentration, CD73, ADA, A2AR expression, and CD26 activity were addressed in vivo, and cAMP production was addressed in cellulo. For in vivo conditions, 1) hyperoxia decreased adenosine plasma level and T cell surface CD26 activity, whereas it increased CD73 expression and ADA level; 2) hyperbaric hyperoxia tended to amplify the trend; and 3) hyperbaria alone lacked significant influence on these parameters. In the brain and in cellulo, 1) hyperoxia decreased A2AR expression; 2) hyperbaric hyperoxia amplified the trend; and 3) hyperbaria alone exhibited the strongest effect. We found a similar pattern regarding both A2AR mRNA synthesis in the brain and cAMP production in Chem-3 cells. Thus a high oxygen level tended to downregulate the adenosinergic pathway and CD26 activity. Hyperbaria alone affected only A2AR expression and cAMP production. We discuss how such mechanisms triggered by hyperoxygenation can limit, through vasoconstriction, the oxygen supply to tissues and the production of reactive oxygen species.

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Distinctive Aspects of the Ecology of Stream Fishes: A Review

Journal of the Fisheries Research Board of Canada ◽

10.1139/f69-133 ◽

1969 ◽

Vol 26 (6) ◽

pp. 1429-1438 ◽

Cited By ~ 18

Author(s):

K. Radway Allen

Keyword(s):

Essential Feature ◽

Fish Fauna ◽

High Oxygen ◽

Routine Metabolic Rate ◽

Physiological Factors ◽

Factors Associated ◽

Lethal Limit ◽

Characteristic Features ◽

High Oxygen Level

The essential feature of a stream is the continuous flow of water, and the various schemes of classification of streams and the associated fish fauna are largely based on factors which determine the average velocity. These schemes have been better developed in Europe than elsewhere, probably due to the relative uniformity of the climate. The characteristic features of fish inhabiting the more rapid streams can be related to the constraints imposed by this environment, and particularly by the need for the population to maintain its position against the continuous tendency of the stream to transport it downstream. Physiological factors associated with the normally high oxygen level and the need for continuous activity include a high routine metabolic rate, a high oxygen threshold for full activity, and, possibly, a high lower lethal limit for dissolved oxygen. Adult fish maintain their position either by continuous swimming in midwater, and these usually have a streamlined shape which is circular or laterally compressed in cross-section, or by avoiding the current and living closely attached to or in the substrate and these are usually dorso-ventrally depressed. The eggs are usually protected from the current by burying them in the substrate, sometimes in a well-developed nest. The general absence of vegetation in rapid streams results in the fish generally feeding principally on the available animal food, usually small invertebrates taken either in the drift or off the bottom. The solitary territorial behaviour which characterizes most stream-living fish probably leads to more even distribution and more efficient utilization of the food supply.

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