A rapid expansion of population and industrialization in recent
years has created new and difficult problems in water resources
management. Prudent management of water quality will require that
more efficient methods be developed for evaluating large volumes of
data on complex river systems, and tabulating the results in a form...
The infrared spectra of the metaborate monomer and trimer
ions in NaC1, KC1, and KBr were studied. These spectra contain
bands due to the trimer in solid solution, in a second phase of the appropriate
potassium or sodium salt, and perhaps on adjacent lattice
sites. Furthermore, complex equilibria exist between...
Solubility studies on the heavy metal sulfides in liquid hydrogen
sulfide at room temperature were carried out using the isopiestic
method. The results were compared with earlier work and with a
theoretical result based on Raoult's Law. A relative order for the
solubilities of sulfur and the sulfides of tin,...
A comparison was made of the d.c. conductivity of KCI:Pb²⁺
and KCl:PbO single crystals at temperatures greater than 325°C.
The energy of activation was 0.72 ev for all crystals. Lead concentration
was determined by chemical, optical and electrical methods. The
half band width of the UV absorption band at 273...
The simultaneous diffusion of Ca 2+ and Sr 2+ ions in purified
single crystals of KC1 and NaC1 was studied over the temperature
ranges from 451°C to 669°C in KC1 and from 448°C to 683°C in NaCl.
A radioactive tracer technique was used in two types of measurements:
diffusion from...
Since the early 1950's, the distribution of sediment at the
mouth of Redwood Creek has been altered by the effects of channel
aggradation and channelization along the lower reach. Severe flooding
in 1953, 1955, and 1964 caused bank erosion, landsliding, and
channel geometry changes along Redwood Creek. The increased sediment...