Cerebral blood flow (CBF) is tightly regulated to meet metabolic demands, and it increases during hemodilution as arterial oxygen content (CaO2) falls. Oxygent® is a perfluorocarbon (PFC) emulsion that has a high capacity to dissolve oxygen and can thus increase CaO2 in patients breathing supplemental oxygen. PFCs have shown excellent oxygen therapeutic value in both phase II and phase III clin...

The Beshar River is one of the most important aquatic ecosystems in the upstream of the Karun watershed in south of Iran which is affected by point and non point pollutant sources . This study was done in order to evaluate the effects of pollutants activities on the water quality of the Beshar river and its aquatic ecosystems. This river is approximately 190 km in length and situated at the geo...

Anaerobic bioreactors have been developed to remove perchlorate from water, but backwashing and operational interruptions can expose biofilms to oxygen. While it is well known that oxygen is a preferential electron acceptor to perchlorate for perchlorate-respiring bacteria, little is known about the effect of oxygen exposure or redox potentials on perchlorate reduction. Four different dissolved...

Video shot boundary detection is a fundamental step in video indexing and retrieval. There are a number of different types of transitions or boundaries between shots. Most shot change detection algorithms can detect abrupt transitions without difficulty. However, gradual transitions usually consist of wipes, fades, dissolves and computergenerated effects, so it is much more difficult for us to ...

Volatile elements and compounds found in extra-terrestrial environments are often the target of In Situ Resource Utilization (ISRU) studies. Although water hydroxide most commonly focus these studies as they can be used for propellant human consumption; we instead on possible exploitation sulfur how it could utilized to produce building materials Moon, Mars Asteroids. We describe physical chemi...

Sulfide minerals (mainly FeS2) contained in lead-zinc tailings are easy to be acidified the air. The acidification mechanism is that tailing sand generates sulfuric acid and sulfate under catalysis of oxidant, water oxygen. acidic liquid generated by reaction will continue react with metal oxides form an insoluble precipitate.In order reveal corresponding changes chemical properties physical du...

A dissolve is a gradual transition from one shot to another in a video, resulting from gradually scaling the intensity values of the two shots. Up to now, there have been very few algorithms for detecting dissolves. By analysing characteristics exhibited by a typical dissolve, we propose two methods of detecting dissolves directly in MPEG compressed video. The first method is based on the chara...