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1.
Finding the common ground: Teachers' and employers' representations of English in an assessment context 下载免费PDF全文
There has been a long‐standing debate about how ‘English’ can be defined. Educational policy changes have typically been driven by differing representations of the subject, and have ranged from broad ‘aesthetic’ definitions to more narrow ‘functional’ views. The present study aims to analyse areas of consensus and contention in stakeholders' discourse regarding English. A questionnaire‐based survey and focus groups were used to explore how teachers and employers viewed English as a subject. Their views were conceptualised into three themes: the importance of functional English; English as atomistic versus holistic study; and English as critical thought. These themes are discussed in relation to historical definitions of ‘English’, and their implications for the future reform of English qualifications. 相似文献
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J. Baxi Kavita Sharma Rajbala Asha Mehta A. K. Pendse P. P. Singh 《Indian journal of clinical biochemistry : IJCB》1994,9(1):47-49
Evaluation of serum SOD and MDA level was done in 21 first episode renal stone formers, 9 recurrent stone formers, 20 patients with obstructive uropathy other than urolithiasis and 12 patients with urinary infection. Twenty-two healthy volunteers were taken as controls. The level of SOD in respective groups was 2.12±0.84, 2.78±0.85, 1.42±0.31, 1.98±0.70 and 2.32±0.62 units/ml and of MDA was 2.61±1.07, 2.69±1.15, 1.65±0.33, 1.33±0.34 and 1.55±0.48 n mol/ml respectively. The results indicate increased peroxidative stressin nephrolithiasis only. Since SOD level was normal in all groups, this increased peroxidative stress in nephrolithiasis should be due to factors other than this one. 相似文献
4.
K. Pratibha T. Seenappa K. Ranganath 《Indian journal of clinical biochemistry : IJCB》2007,22(2):158-161
Alkaptonuria, a metabolic disorder characterized by a triad of homogentisic aciduria, arthritis and ochronosis is one of the
first conditions in the charter of group of inborn errors of metabolism proposed to have Mendelian recessive inheritance.
It is due to the deficiency of the enzyme homogentisic acid oxidase which catalyzes the conversion of homogentisic acid to
maleylacetoacetic acid in the catabolism of tyrosine. Homogentisic acid thus accumulates in cells and body fluids and its
oxidized polymers bind to collagen, leading to progressive deposition of grey to bluish black pigment resulting in degenerative
changes in cartilage, intervertebral disc and other connective tissues, leading to arthritis which is the only disabling effect
in an affected older individual. However the diagnosis can be made in neonates when blackish stain is noticed in an unwashed
diaper. Alkaptonuria is treated symptomatically, surgical intervention necessitates in advanced stages, treatment with ascorbic
acid (Vitamin C) and dietary restrictions of food containing phenylalanine and tyrosine have proved to be successful in alleviating
the symptoms. 相似文献
5.
K. Pratibha Usha Anand Rajni Agarwal 《Indian journal of clinical biochemistry : IJCB》2004,19(2):128-131
Serum adenosine deaminase (ADA), 5′ nucleotidase (5′NT) and malondialdehyde (MDA) were estimated in patients with acute infective
hepatitis (AIH) along with the routine parameters of liver disease. Present study is done to evaluate these special parameters
in patients with clinical history of AIH and to assess the utility of these parameters as diagnostic/ prognostic indices of
liver function and to correlate special parameters with routine live function tests (LFT). ADA, 5′NT and MDA along with routine
LFT was estimated in 25 patients with AIH and 25 samples from healthy voluntary blood donars served as the control group.
Routine LFT was estimated by standard clinical chemistry procedures on dade behring analyser and ADA, 5′NT and MDA were estimated
by berthlot reaction, fiske and subbarao method and thiobarbituric acid method respectively.
Statistical analysis showed that serum ADA, 5′NT and MDA were significantly higher in patients as compared with the controls.
There was a significant positive correlation between ADA and total bilirubin and MDA and total bilirubin. Hence we can conclude
that these tests would be more sensitive to diagnose the patients with AIH and that the raised bilirubin levels could be looked
upon, as a protective mechanism which the liver has evolved in order to combat oxidative stress. 相似文献
6.
Shalini M Yogeeswari P Sriram D Induja S 《Journal of Zhejiang University. Science. B》2007,8(1):45-55
Objective: To study the effect of halo substitution on disubstituted aryl semicarbazones on the anticonvulsant potential and model the activity based on quantum mechanics. Methods: A series of twenty-six compounds of N^4-(4-bromo-3-methylphenyl) semicarbazones were synthesized and evaluated for the anticonvulsant activity in the maximal electroshock seizure (MES) and subcutaneous pentylenetetrazole (scPTZ) seizure threshold tests. Some potential compounds were also tested in the subcutaneous strychnine (scSTY) and subcutaneous picrotoxin (scPIC) seizure threshold tests. The synthesized compounds were tested for behavioral impairment and CNS (central nervous system) depression in mice. Quantum mechanical modelling was carried out on these compounds to gain understanding on the structural features essential for activity. Results: Some compounds possessed broad spectrum anticonvulsant activity as indicated by their effect in pentylenetetrazole, strychnine, picrotoxin and maximal electroshock seizures models in resemblance to other aryl semicarbazone derivatives reported earlier. The higher the difference in HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy levels was, the greater was the activity profile. Conclusion: The pharmacophoric requirements for compounds to exhibit anticonvulsant activity that includes one aryl unit in proximity to a hydrogen donor-acceptor domain and an electron donor have been justified with the molecular orbital surface analysis of the synthesized compounds. 相似文献
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An overview of cricket ball swing 总被引:1,自引:0,他引:1
Rabindra D. Mehta 《Sports Engineering》2005,8(4):181-192
The aerodynamic properties of a cricket ball have intrigued cricket players and spectators for years, arguably since the advent
of the game itself. The main interest is in the fact that the ball can follow a curved flight path that may not always be
under the control of the bowler. The basic aerodynamic principles responsible for the nonlinear flight or ‘swing’ of a cricket
ball were identified decades ago and many papers have been published on the subject. Over the last 25 years or so, several
empirical investigations have also been conducted on cricket ball swing, which revealed the amount of attainable swing and
identified the parameters that affect it. Those findings are reviewed here with emphasis on phenomena such as late swing and
the effects of humidity on swing. The relatively new concept of ‘reverse swing’, how it can be achieved in practice, and the
role in it of ‘ball tampering’, are also discussed in detail. In particular, the ability of some bowlers to effectively swing
an old ball in the conventional, reverse and the newly termed ‘contrast’ swing mode is addressed. A discussion of the ‘white”
cricket ball used in the 1999 and 2003 World Cup tournaments, which supposedly possesses different swing properties compared
to a conventional red ball, is also included. This is a current overview of cricket ball swing rather than a detailed review
of all research work performed on the topic. The emphasis is on presenting scientific explanations for the various aerodynamic
phenomena that affect cricket ball swing on a cricket ground. 相似文献
9.
Garima Mehta Seema Kothari P. P. Singh 《Indian journal of clinical biochemistry : IJCB》2001,16(1):65-71
From January 1992-January 1998, 1404 patients attended the “Breast Clinic” of R.N.T. Medical College M.B. Hospital, Udaipur.
Out of these, 11% and 81% patients had breast cancer (B.C.) and benign breast cancer (B.B.D.) respectively. The oxidative
load in B.C. was 2.32 times higher than controls, but comparable to B.B.D. β-Carotene deficiency was uncommon in patients,
whereas vitamin A deficiency was almost equally common in both B.C. and controls. Most of the patients had almost depleted
levels of α-tocopherol and ascorbic acid but their TBAR levels were in normal range. The data in the present study when compared
with B.B.D. and other local normal subjects point out: a) oxidative burden in B.C. is a consequence and not the cause of the
disease, (b) oxidative stress could be one of the etiological factors in tumor expression, which need not to be malignant
and c) α-tocopherol and ascorbic acid are not importantly responsible for higher oxidative burden in B.C. 相似文献
10.
Pankaj Abrol Umesh Mehta Harbans Lal 《Indian journal of clinical biochemistry : IJCB》2002,17(1):64-68
Vitamin A status was measured in 50 pre-school children with acute and persistent diarrhoea. It was measured by (a) Fluorometric
micromethod and (b) Conjunctival impression cytology (CIC). The results were compared with 25 normal children. Vitamin A status
was lower in children with persistent diarrhoea whereas the results were comparable between the children with acute diarrhoea
and control subjects. 相似文献