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Peng-yan Zhang, Ming-zhou Qin, Long Chen, Chang-hui Hu, Ya-ping Zhao, Wei-jun Dong
The distributions, soil environment status and potential ecological risk of heavy metals were studied in beach soil of returning the cropland into Yellow River beach region in Kaifeng by the Nemerows and Håkansons methods. The results showed that (1) as Among the average contents of the five heavy metals Pb, Cr, Hg, As and Cd, the highest was the average content of Cr, and the lowest was the average content of Pb and Hg. In addition to Hg, the coefficients of variation of other heavy metals were relatively small, indicating that the content of heavy metals was quite different at different sites, and to some extent, relecting that Hg, As and Pb were the major elements polluting the soil, among which, Pb pollution was the pollution with universality...
September 2013: Huan Jing Ke Xue= Huanjing Kexue
Christina Tziafa, Spiros Zinelis, Margarita Makou, Theodore Eliades, George Eliades
AIM: To investigate the surface morphology, structure, molecular and elemental composition, and hardness of plastic brackets exposed to fluoride solutions. METHODS: Two types of plastic brackets (Silkon Plus and SpiritMB) were exposed to three fluoride solutions 10 times for 1 minute each and then subjected to attenuated total relectance-Fournier transform infrared (ATR-FTIR) spectroscopy, scanning electron microscopy (SEM), x-ray energy dispersive microanalysis (EDS), and Vickers hardness (HV) testing...
2010: World Journal of Orthodontics
Adriana M Kubis, Maria Janusz
Neurodegenerative disorders such as Alzheimer's disease (AD) are the most common disease of modern society. The gradual and irreversible disturbances in homeostasis are characteristic features of the disease process. The cardinal features of AD include the formation of extracellular protein deposits in the brain that consist predominantly of aggregates of b amyloid protein(senile plaques), neurofibrilary tangles (hyperfosforylated tau protein) in the intracellular compartments,disturbances in calcium homeostasis, and degeneration/loss of synapses and neurons...
August 5, 2008: Postȩpy Higieny i Medycyny Doświadczalnej
Kenneth J Koval, Michael Cooley, Robert V Cantu, Kevin F Spratt
BACKGROUND: The effects of alcohol on morbidity and mortality following motor vehicle accidents (MVAs) are controversial. This study was performed to address the effect of alcohol on in-hospital mortality for drivers in MVAs admitted to a trauma center before and after controlling for injury severity, safety device use, and patient demographics. METHODS: A retrospective study was performed using data from the National Trauma Data Bank, version 4.3. The cohort consisted of drivers in an MVA who were 15 years of age or older, had been admitted to the hospital on the same day as the accident, were screened for alcohol, and had no documentation of drugs in their system...
2008: Bulletin of the NYU Hospital for Joint Diseases
B F Jackson, C Lonnell, K Verheyen, J L N Wood, D U Pfeiffert, J S Price
REASONS FOR PERFORMING STUDY: Injuries to the skeleton are a major cause of morbidity and mortality in racehorses and age, gender and season have all been shown to influence risk of injury. OBJECTIVES: To use biochemical markers of bone cell activity to establish to whether cellular processes in bone underlie these described effects. METHODS: Blood samples were collected monthly from 2-year-old horses in race training between November 1998 and September 1999...
November 2003: Equine Veterinary Journal
A T Helm, M T Karski, S J Parsons, J S Sampath, R S Bale
We prospectively audited 79 patients undergoing primary knee or hip arthroplasty (38 knees, 41 hips) and found that 66% (58% of knees, 73% of hips) had at least one unit of blood transfused postoperatively, with a mean transfusion requirement of 13 units per patient (1.1 for knees, 0 to 6; 1.5 for hips, 0 to 4). We then established a new protocol for postoperative blood transfusion. This requires the calculation of the maximum allowable blood loss (MABL) that each individual patient can safely lose based upon their weight and preoperative haematocrit...
May 2003: Journal of Bone and Joint Surgery. British Volume
Ronald B Miller
No abstract text is available yet for this article.
2002: Journal of Clinical Ethics
N I Berlin, P D Berk
Techniques now available for the study of plasma disappearance kinetics of isotopically labeled unconjugated bilirubin have led to new insights into the factors that determine the plasma unconjugated bilirubin concentration (BR). This variable can be shown to depend in turn on five other parameters: the total circulating red cell volume (TRVC), the mean corpuscular hemoglobin concentration (MCHC), the mean red cell lifespan (RBCLS), plasma volume (PV), and the hepatic extraction coefficient for unconjugated bilirubin (ke)...
June 1981: Blood
P G Miller, R A Klein
Oligomycin (3 microgram ml-1) inhibited glucose utilization in Trypanosoma brucei S42 as shown by measurements of oxygen uptake and pyruvate production. Carbonyl cyanide 3-chlorophenylhydrazone, an uncoupler of oxidative phosphorylation, did not relieve this inhibition, although some relief was afforded by the alternative substrate glycerol. Naturally dyskinetoplastic Trypanosoma evansi MIAG 105 was less sensitive to inhibition by oligomycin although glycerol relief was still observed, relecting the differential sensitivity of the two pathways...
February 1980: Journal of General Microbiology
Iu A Fadeev
No abstract text is available yet for this article.
May 1968: Doklady Akademii Nauk SSSR
Z Jebavý
No abstract text is available yet for this article.
1973: Ceskoslovenská Stomatologie
G F Grannis
Lyophilized serum specimens were manufactured in such a way that fixed quantitative interspecimen relationships were established. The specimens were analyzed for about twenty constituents by several thousand laboratories in 1971, 1972, and 1973. Most of the consensus mean values derived from these analyses were found to relect accurately the relationships established in the manufacture of the specimens. In addition, analyses of some of the specimens for calcium by the National Bureau of Standards confirmed the relationships...
July 1976: Clinical Chemistry
R A Lessey, A Reading
Suicide is seldom, if ever, a comfortable subject to deal with. Medical school curricula, for various reasons, are too often unable to include the subject in a useful way, and consequently physicians feel unprepared when confronted with a severely depressed or desperate patient in practice. In addition, suicide is an unsettling reality because it relects and reminds us of our own frailty and humanity. Nearly everyone has had an experience of depression or some fleeting thought of suicide at some time in his life...
March 1975: Primary Care
M Harty, L Horwitz
The views of patients, therapists, and research judges were compared as to the degree of success attained in 22 cases of long-term psychotherapy and 15 cases of psychoanalysis. Across all cases, there was a tendency for therapists to overrate their success, as compared to the other two sources; this, together with a tendency of therapists to overlook or misperceive patients' dissatisfaction with treatment outcome, suggested that the failure to recognize and deal with the patient's negative feelings was a factor in a substantial number of unsuccessful treatments...
August 1976: Archives of General Psychiatry
R O Wolf, M E Ross, T M Tarpley
Quantitative polyacrylamide disk gel electrophoresis of sera from 27 patients with Sjögren's syndrome (SS) and 12 comparable normal subjects revealed that serum amylase activity in patients with SS varies due to changes in the salivary isoenzyme, while pancreatic isoamylase remains normal. The SS group can be divided into those patients with markedly increased salivary isoamylase and those with normal or low salivary isoamylase. At this time we cannot be certain whether this reflects different stages in a progressive disorder, or differences in the underlying pathologic processes...
June 1976: American Journal of Clinical Pathology
R W Pilsucki, N W Clayton, V J Cabelli, P S Cohen
A total of 40 fecal and environmental isolates, including 26 Escherichia coli strains, 9 members of the genus Klebsiella, and 5 members of the genus Enterobacter, were tested by enzyme assay for their endogenous and induced levels of lysine decarboxylase and ornithine decarboxylase when grown in Moeller decarboxylase medium. All of the coliforms examined had measurable lysine decarboxylase and ornithine decarboxylase activities whether or not they were positive in the Moeller test. In general, the Moeller lysine decarboxylase test reflected the inducibility of lysine decarboxylase whereas the Moeller ornithine decarboxylase test did not relect the inducibility of ornithine decarboxylase...
February 1979: Applied and Environmental Microbiology
D H Buttlaire, M Chon
The interactions of substrates with succinyl-CoA synthetase were investigated by measuring the enhancement of the longitudinal water proton relaxation rate (PRR) due to Mn(II) to the enzyme substrate complexes. The binding of Mn(II) to the enzyme was investigated by EPR. The effects of phosphorylating the enzyme on its interactions with Mn(II) and substrates were also examined. Mn(II) binds weakly to dephosphosuccinyl-CoA synthetase (E) at approximately four sites with a KD value of 0.14 mM, and the PRR enhancement of the complex, epsilonb, at 24...
March 25, 1977: Journal of Biological Chemistry
D S Meyers, J Templer, W E Davis, J A Balch
Most American clinicans have been relectant to utilize aspiration biopsy due to poor interpretive skills by the pathologists in the past and a fear of tumor spread by the needle. Voluminous European series and recent American series have proved aspiration to be safe and reliable. In our series of 78 cases, both thin-needle aspiration and conventional tissue biopsies were made. The diagnoses were compared and the overall agreement rate was 90%.
July 1978: Otolaryngology
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