scholarly journals SNOWMELT PROCESSES AND APPLICATIONS

MAUSAM ◽  
2022 ◽  
Vol 45 (2) ◽  
pp. 129-138
Author(s):  
D. S. UPADHYAY

Snow u a dyn :lmic material which chanee, iu texure and properties almost continuously. BesidesIhis cha Uen,ina aspect. we are also conce rned with itt role in water supply, recreation. maintenance of environmentalstandard. modifyina atmospheric:circulation and also in destructive forces like avalanche and s1ides~ Presentpaper dw. witb rollowina l '1p«1J or this subject :(i) Presentation of specific data and infonnation ilIustratina: pro perti es of snow related phenomena. Theseinformatimu hIve been collected (rom various literatu re and olhe r materials Including field observation!col lected by the author,(ii) Prucntalion of ~odolOlY and results of the following studies :(a) . deduction or thermal structure of mowpad usine equation of heat trans fer.(b) den.tty variationJ in time and space. and .(c) .nowmelt proce sses.(iil) Identification of sorne problems and outlinine the proposal for furth er studies.  

Author(s):  
Ken-ichi UZAKI ◽  
Yosuke ARAKI ◽  
Shinya HORIGUCHI ◽  
Tatsuya AMAGASA ◽  
Yusuke TOYA ◽  
...  

Author(s):  
O. Mudroch ◽  
J. R. Kramer

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.


Author(s):  
Evelyn R. Ackerman ◽  
Gary D. Burnett

Advancements in state of the art high density Head/Disk retrieval systems has increased the demand for sophisticated failure analysis methods. From 1968 to 1974 the emphasis was on the number of tracks per inch. (TPI) ranging from 100 to 400 as summarized in Table 1. This emphasis shifted with the increase in densities to include the number of bits per inch (BPI). A bit is formed by magnetizing the Fe203 particles of the media in one direction and allowing magnetic heads to recognize specific data patterns. From 1977 to 1986 the tracks per inch increased from 470 to 1400 corresponding to an increase from 6300 to 10,800 bits per inch respectively. Due to the reduction in the bit and track sizes, build and operating environments of systems have become critical factors in media reliability.Using the Ferrofluid pattern developing technique, the scanning electron microscope can be a valuable diagnostic tool in the examination of failure sites on disks.


Author(s):  
B.D. Tall ◽  
K.S. George ◽  
R. T. Gray ◽  
H.N. Williams

Studies of bacterial behavior in many environments have shown that most organisms attach to surfaces, forming communities of microcolonies called biofilms. In contaminated medical devices, biofilms may serve both as reservoirs and as inocula for the initiation of infections. Recently, there has been much concern about the potential of dental units to transmit infections. Because the mechanisms of biofilm formation are ill-defined, we investigated the behavior and formation of a biofilm associated with tubing leading to the water syringe of a dental unit over a period of 1 month.


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