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981.
982.
Madhusudhana Rao A Anand U Anand CV 《Indian journal of clinical biochemistry : IJCB》2011,26(1):28-31
Numerous lines of evidence implicate a role of myeloperoxidase (MPO) in the pathogenesis of cardiovascular disease (CVD).
It is a well accepted fact that patients with chronic kidney disease (CKD) are at an increased risk for CVD. MPO is a pro-oxidant
enzyme which could be involved in the increased susceptibility of these patients to CVD. Hence, the levels of plasma MPO was
determined in healthy controls as well as in patients with CKD [stratified with the level of their kidney failure as CKD stages
II–V (end stage renal disease)]. Plasma MPO was assayed by a spectrophotometric method. Serum urea and creatinine were estimated
on a clinical chemistry analyzer using standard laboratory procedures. The mean plasma MPO levels were significantly lower
with advancing stages of renal failure (P < 0.001). There was a positive correlation between MPO and GFR (r = +0.89, P < 0.001) and a negative correlation with urea (r = −0.85, P < 0.001) and creatinine (r = −0.82, P < 0.001). While an inverse association was observed between plasma MPO and urea in CKD patients, such an association was
not observed in control subjects (P = 0.43). In conclusion, the decline in plasma MPO levels may be due to the inhibitory effect of uraemic toxins on the enzyme. 相似文献
983.
By coupling the heat transfer equation with semi-global chemical reaction kinetic equations, a onedimensional, unsteady mathematical model is developed to describe the pyrolysis of single biomass pellet in the pyrolysis zone of downdraft gasifier. The simulation results in inert atmosphere and pyrolysis zone agree well with the published experimental results. The pyrolysis of biomass pellets in pyrolysis zone is investigated, and the results show that the estimated convective heat transfer coefficient and emissivity coefficient are suitable. The mean pyrolysis time is 15.22%, shorter than that in inert atmosphere, and the pellet pyrolysis process in pyrolysis zone belongs to fast pyrolysis. Among the pyrolysis products, tar yield is the most, gas the second, and char the least. During pyrolysis, the temperature change near the center is contrary to that near the surface. Pyrolysis gradually moves inwards layer by layer. With the increase of pyrolysis temperature and pellet diameter, the total pyrolysis time, tar yield, char yield and gas yield change in different ways. The height of pyrolysis zone is calculated to be 1.51—3.51 times of the characteristic pellet diameter. 相似文献
984.
Vinita Ailani R. C. Gupta Sunil Kumar Gupta Kapil Gupta 《Indian journal of clinical biochemistry : IJCB》2009,24(4):426-429
This study was conducted to find out the level of oxidative stress and effect of supplementation of vitamin C, D and Calcium
on levels of SOD, serum and urinary fluoride in children residing in endemic fluorosis area. For this the fluoride belt of
Jaipur district was selected. The parameters selected were Super oxide dismutase, serum fluoride and urinary fluoride. The
study was conducted on one hundred children, selected from four areas (25 from each area) consuming water containing 1.2,
2.4, 5.6 and 13.6 mg/l of fluoride. Drinking water fluoride, serum and urinary fluoride were measured by Ion selective electrode
method. Serum SOD by Xanthine oxidase method using kit of Ransod (kit cat. No. SD125). The post treatment values showed a
significant reduction in serum fluoride and SOD. Urinary fluoride levels increased significantly in post treatment stage.
The results revealed a normal SOD levels in all groups but an increasing trend was observed with increasing fluoride concentration.
Treatment with Calcium, Vitamin D and Vitamin C showed a significant reduction in serum fluoride and SOD and increase in urinary
fluoride. A high positive correlation between pretreatment and post treatment group was observed in serum fluoride, SOD and
urinary fluoride (P < 0.05). The study indicated an increasing oxidative stress in cases of fluorosis with increasing drinking
water fluoride concentration. Treatment with Calcium, Vitamin D and Vitamin C resulted a significant reduction in serum fluoride
and SOD and increase in urinary fluoride. 相似文献
985.
Manuel Toral Ibañez Margarita Caru Miguel A. Herrera Luis Gonzalez Luis M. Martin Jorge Miranda Rafael M. Navarro-Cerrillo 《Journal of Zhejiang University. Science. B》2009,10(2):112-119
A protocol of polymerase chain reaction-random amplified polymorphic DNAs (PCR-RAPDs) was established to analyse the gene
diversity and genotype identification for clones of Sequoia sempervirens (D. Don) Endl. in Chile. Ten (out of 34) clones from introduction trial located in Voipir-Villarrica, Chile, were studied.
The PCR-RAPDs technique and a modified hexadecyltrimethylammonium bromide (CTAB) protocol were used for genomic DNA extraction.
The PCR tests were carried out employing 10-mer random primers. The amplification products were detected by electrophoresis
in agarose gels. Forty nine polymorphic bands were obtained with the selected primers (BG04, BF07, BF12, BF13, and BF14) and
were ordered according to their molecular size. The genetic similarity between samples was calculated by the Jaccard index
and a dendrogram was constructed using a cluster analysis of unweighted pair group method using arithmetic averages (UPGMA).
Of the primers tested, 5 (out of 60) RAPD primers were selected for their reproducibility and high polymorphism. A total of
49 polymorphic RAPD bands were detected out of 252 bands. The genetic similarity analysis demonstrates an extensive genetic
variability between the tested clones and the dendrogram depicts the genetic relationships among the clones, suggesting a
geographic relationship. The results indicate that the RAPD markers permitted the identification of the assayed clones, although
they are derived from the same geographic origin.
Project (No. CONICYT-FONDEF PROYECT D01 I 1008) supported by the National Commission of Science and Research of Chile 相似文献
986.
Howard S. Martin 《广播与电子媒介杂志》2013,57(1):27-39
All too often, strong opinions are held without regard to detailed knowledge of the subject involved. Current controversies show that the question of course content in professional broadcasting education is no exception. Regardless of the viewpoint held, a supply of adequate data relevant to the question should be welcomed by all. The Journal undertakes to supply as much data as possible relevant to broadcasting education, the most recent example being Harold Niven's “Fourth Annual Survey of Colleges and Universities Offering Course Work in Radio and Television, 1958–1959”; published in the Fallissue. 相似文献
987.
988.
The paper focuses on the convergence of Finnish research and education in archival science with information science in general
and in records management with information management in particular. Two issues influencing this development are: the convergence
of professionals previously worked in the archival and library sectors and in information management and services; and the
wide-spread, extensive growth in the use of digital technology to manage internal and external organizational information.
At the level of society the opportunities provided by digital technology to manage heritage information in memory organizations
like archives, libraries and museums, are tremendous and the role of documentary heritage at the global, European and national
levels is well recognized. These developments are changing the information and operating environments of memory organizations
and public and private enterprises. These changes, in turn, are generating new requirements in archival science and records
management education and research. This paper focuses on the implications of these changes for the planning, implementation
and further development of an information studies curriculum. This curriculum development is considered crucial in order to
respond to the new demands, and is also implicitly linked to the emerging Finnish information society.
This article is based on Huotari, M.-L. and Valtonen, M.R., “Integrating Records and Archives Management with Information
Studies in Finland”, in L. Ashcroft (ed.),Continuity, Culture, Competition—the Future of Library and Information Studies Education, Proceedings of the 4th British-Nordic Conference on Library and Information Studies 21–23 March 2001, Dublin, Ireland, pp.
249–254 (Dublin: MCB UP Limited, 2002). 相似文献
989.
This study is designed to identify the underlying satisfaction dimensions gained through engagement in target shooting as a serious leisure pastime. The instrument design was based on the Leisure Satisfaction Scale. A total of 5502 useable surveys were collected through the Internet and a website related to target shooting and gun ownership. The results revealed eight dimensions: self-actualization, social interaction, location aesthetic, respite, physical benefit, connection and hedonic pleasure, which supplied the primary satisfiers of engaging in target shooting as a serious leisure activity. The demographic profile and dimensions of satisfaction may serve to dispel commonly held stereotypes of shooting hobbyists and those involved in gun ownership. The findings have important implications for leisure researchers and practitioners, to industry, both leisure and firearm related, and the target shooting community at large. This study adds to the literature of both target shooting and serious leisure. 相似文献
990.
Venkateshwari A Sri Manjari K Krishnaveni D Nallari P Vidyasagar A Jyothy A 《Indian journal of clinical biochemistry : IJCB》2011,26(2):136-139
Pancreatic fibrosis is a key pathological feature in the etiology of chronic pancreatitis that leads to obliteration of exocrine
and endocrine pancreatic tissues and its replacement by fibrous tissue resulting in clinical manifestations. Matrix metalloproteinase
9 is a member of the MMP family that is also known as gelatinase B, degrades type IV collagen of extracellular matrix and
basal membrane. The present study is aimed at evaluating the clinical significance of plasma concentration of MMP-9 in chronic
pancreatitis. The samples were obtained from 112 chronic pancreatitis patients and an equal number of age and sex matched
healthy controls. MMP-9 levels were quantitatively measured by ELISA assay. Statistical analysis was applied to test the significance
of results. The present study revealed a significant increase of plasma MMP 9 levels in chronic pancreatitis patients compared
to control subjects. Elevated levels were also observed in all the patient groups compared to control subjects with regard
to sex, age, addictions etc. MMP-9 degrades the type IV collagens in normal basement membrane, which in turn activates the
pancreatic stellate cells which promote the development of pancreatitic fibrosis. Thus, elevated plasma levels of MMP-9 may
act as a susceptibility factor for the development of chronic pancreatitis. 相似文献