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...

It is well known that microorganisms can dissolve different minerals and use them as sources of nutrients and energy. The majority of rock minerals are rich in vital elements (e.g., P, Fe, S, Mg and Mo), but some may also contain toxic metals or metalloids, like arsenic. The toxicity of arsenic is disclosed after the dissolution of the mineral, which raises two important questions: (1) why do m...

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...

rivers can be contaminated with different pollutants such as trout farms. evaluation of the effect of trout farm on water quality is important to give new permission for trout farm construction. in current work, the effect of constructed trout farms near the deinachal river on some physicochemical properties namely chemical oxygen demand (cod), biological oxygen demand (bod5), dissolved oxygen ...

The physicochemical monitoring of water quality is very key both to aquatic life and public health. To date little known about the downstream Aku river, located in Uturu, Isuikwato local government area Abia state. Therefore aim study determine river terms several parameters heavy metals analysis ascertain properties reveal pollution problems. Samples were collected at 15m, 30m, 45m, 60m, 75m, ...