Search
Now showing items 51-60 of 94
Kinetics of fine wet grinding in a laboratory ball mill
(ELSEVIER SCIENCE SA, 2001)
The kinetics of batch wet grinding of quartz from a feed of 600 x 425 mum to a product of 80% less than 8 mum have been determined using sieving and laser diffractometer sizing for size analysis. A dispersing agent was ...
Water quality problems of a gypsiferous watershed: Upper Kizilirmak basin, Sivas, Turkey
(KLUWER ACADEMIC PUBL, 2001)
The solubility of the gypsum is generally very high in comparison to many other minerals. The surface and groundwater contacting gypsum formations can easily attain high amounts of total dissolved solids (TDS), calcium, ...
Soluble microbial product formation in biological systems
(INST LEBENSMITTELTECHNOLOGIE ANALYTISCHE CHEMIE, 2001)
Effluents from biological treatment processes contain a variety of soluble organic matter, including residual influent substrate, soluble microbial products, and non- or slowly biodegradable organic materials. Several ...
Mechanisms and transition structures for conjugate and carbonyl addition of ammonia to three small alpha,beta-unsaturated carbonyl compounds. An ab initio molecular orbital study
(ELSEVIER SCIENCE BV, 2001)
Transition structures for the addition of ammonia to s-cis and s-trans acrolein, methyl vinyl ketone, and 2-butenal have been located with ab initio molecular orbital calculations. Optimization of the geometries of reactants, ...
The rodent fauna from the Adapazari pull-apart basin (NW Anatolia): its bearings on the age of the North Anatolian fault
(EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2001)
To the east of the Sea of Marmara, the North Anatolian fault (NAF) branches into two strands, namely the northern and the southern strands. The Adapazari pull-apart basin is located in the overlapping zone of the Dokurcun ...
Effect of ketanserin administration on intraocular pressure
(KARGER, 2001)
Purpose: We evaluated the effect of oral single-dose (20 mg) ketanserin on intraocular pressure (IOP) in normotensive and hypertensive eyes. Methods: This study included 15 healthy volunteers and 16 patients with ocular ...
Prevention of postoperative adhesion formation in rat uterine horn model by nimesulide: a selective COX-2 inhibitor
(OXFORD UNIV PRESS, 2001)
BACKGROUND: Pelvic surgery is one of the main causes of intraperitoneal (i.p.) adhesions that create various medical problems including pelvic pain, bowel obstructions and female infertility. A rat model was used to ...
An alternative method for the exact calculation of Wannier-Stark localization in superlattices
(ACADEMIC PRESS LTD, 2001)
We present an alternative method for the exact calculations of the Wannier-Stark (WS) localization in a long periodic potential corresponding to a (50 Angstrom /30 Angstrom) GaAs/Ga0.7Al0.3As superlattice. We show that the ...
Do not underestimate atrial septal defect!
(EDIZIONI MINERVA MEDICA, 2001)
Atrial septal defect (ASD) is one of the simplest cases among the surgically correctable congenital cardiac diseases. Easiness of the correction usually causes underestimation of the pathology. Angiography as well as ...
An investigation of keto-enol tautomerism in N-vinyl-2-, and 3-pyrrolidinones using ab initio and density functional theory calculations
(ELSEVIER SCIENCE BV, 2001)
We investigated the protomeric tautomerism of N-vinyl-2-pyrrolidinone (N-V2P) and N-vinyl-3-pyrrolidinone (NV3P) molecules, and considered the three neutral tautomers for NV2P (1a, 1b, 1c) and the five for NV3P (2a, 2b, ...