Hypoglycemic, lipid lowering and antioxidant activities in root extract of Anthocephalus indicus in alloxan induced diabetic rats     

Vishnu Kumar  A. K. Khanna  M. M. Khan  Ranjana Singh  Sushma Singh  Ramesh Chander  Farzana Mahdi  J. K. Saxena  Shweta Saxena  V. K. Singh  R. K. Singh 《Indian journal of clinical biochemistry : IJCB》2009,24(1):65-69

The present study was carried out to evaluate the hypoglycemic, lipid lowering and antioxidant activities in root extract of Anthocephalus indicus (A indicus) in alloxan inducd diabetic rats. Oral administration of ethanol extract of root (500mg/ kg body weight) for 21 days resulted in significant decrease in the levels of blood glucose, triglycerides, total cholesterol, phospholipid and free fatty acids. Furthermore, the root extract (100–400μg) inhibited the generation of superoxide anions and hydroxyl radicals, in both enzymic and non-enzymic systems, in vitro. The result of the present study demonstrated hypoglycemic, lipid lowering and antioxidant activities in root extract of A indicus, which could help in prevention of diabetic dyslipidemia and related diseases.  相似文献   

The effects of teacher discourse on students’ discourse,problem-solving and reasoning during cooperative learning     

Robyn M. Gillies  Asaduzzaman Khan 《International Journal of Educational Research》2008,47(6):323-340

The study sought to determine if teachers who are taught specific communication skills designed to challenge students’ cognitive and metacognitive thinking during cooperative learning use more challenging and scaffolding behaviours to mediate students’ learning than teachers who implement cooperative learning or small-group work who have not been taught these skills. The study involved 51 teachers in three conditions (cooperative + communication conditions; cooperative condition, group-work condition) and two groups of students from each of the above teachers’ classes. The results show that the teachers in the cooperative + communication condition used significantly more challenging and scaffolding behaviours than teachers in the group-work condition but not more than the teachers in the cooperative condition. The study also showed that the children in the cooperative + communication condition provided significantly more elaborative and help-giving behaviours to group members than peers in the other two conditions and they obtained higher scores on the follow-up reasoning and problem-solving activities than their peers in the group-work condition.  相似文献   

Introduction to the Open File     

Faryal Khan  Olav Christensen 《Prospects》2009,39(2):123-127

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Successful immunological treatment of gallbladder cancer in India Case report   总被引：1，自引：0，他引：1  

Khan JA  Yaqin S 《Journal of Zhejiang University. Science. B》2006,7(9):719-724

Gallbladder cancer has a poor outcome because of its anatomy and location. Often, the diagnosis is made very late due to its silent course. Post-operated cases do respond to chemotherapy but the survival is counted in months and the quality of life is further hampered due to toxicity of drugs. Immunotherapy holds good promise in non-responding cancers treated by conventional chemotherapeutic agents. Among various therapies, dendritic cell therapy is growing at rapid pace due to its acceptable rationale. It has been utilized in treating successfully resected stage Ill （T2, N1, M0） gallbladder cancer in one of our patients. A 48 years old lady treated with this therapy is free of metastasis with ten doses of autologous dendritic cell vaccine constructed by utilizing resected tumor lysate antigen. She has received ten doses of therapy in 14 months of her treatment. This therapy has proven to be safe and without apparent side effects. The positive clinical response obtained supports that autologous dendritic cell-based immunotherapy is a promising therapeutic approach for refractory gallbladder cancers.  相似文献   

Quality of effluents from Hattar Industrial Estate     

Sial RA  Chaudhary MF  Abbas ST  Latif MI  Khan AG 《Journal of Zhejiang University. Science. B》2006,7(12):974-980

Of 6634 registered industries in Pakistan, 1228 are considered to be highly polluting. The major industries include textile, pharmaceutical, chemicals （organic and inorganic）, food industries, ceramics, steel, oil mills and leather tanning which spread all over four provinces, with the larger number located in Sindh and Punjab, with smaller number in North Western Frontier Province （NWFP） and Baluchistan. Hattar Industrial Estate extending over 700 acres located in Haripur district of NWFP is a new industrial estate, which has been developed with proper planning for management of industrial effluents. The major industries located in Hattar are ghee industry, chemical （sulfuric acid, synthetic fiber） industry, textile industry and pharmaceuticals industry. These industries, although developed with proper planning are discharging their effluents in the nearby natural drains and ulti- mately collected in a big drain near Wah. The farmers in the vicinity are using these effluents for growing vegetables and cereal crops due to shortage of water. In view of this discussion, there is a dire need to determine if these effluents are hazardous for soil and plant growth. So, effluents from different industries, sewage and normal tap water samples were collected and analysed for pH electrical conductivity （EC）, total soluble salts （TSS）, biological oxygen demand （BOD）, chemical oxygen demand （COD）, total nitrogen, cations and anions and heavy metals. The effluents ofghee and textile industries are highly alkaline. EC and TSS loads of ghee and textile industries are also above the National Environmental Quality Standards （NEQS）, Pakistan. All the effluents had residual sodium carbonates （RSCs）, carbonates and bicarbonates in amounts that cannot be used for irrigation. Total toxic metals load in all the effluents is also above the limit i.e. 2,0 mg/L. Copper in effluents of textile and sewage, manganese in ghee industry effluents and iron contents in all the effluents were higher than NEQS. BOD and COD values of all the industries are also above the NEQS. On the whole, these effluents cannot be used for irrigation without proper treatment otherwise that may cause toxicity to soil, plants and animals as well add to the problems of salinity and sododicity. Similarly, these effluents cannot be used for fish farming.  相似文献   

Does performance in progressive assessment influence the outcome in final examination? An Australian experience     

Mohammad Alauddin  Asaduzzaman Khan 《Educational Assessment, Evaluation and Accountability》2010,22(4):293-305

This paper investigates whether performance in progressive assessment necessarily influences the outcome in the end-of-semester final examination using the experience of an introductory postgraduate statistics course at a large Australian university. The average score on progressive assessments was higher than that of the final examination. Students attaining a higher distinction (HD) at the progressive assessment had a 37% chance of securing the same grade in the final examination, while students securing just a pass grade at the progressive assessment had 54 percent chance of failure in the final examination. Multiple regression analysis revealed that students’ performance in progressive assessments had a significant positive impact on final examination, so has the impact of learning diary. Mid-semester tests based exclusively on multiple choice questions (MCQs), more weights in progressive assessment and class-size appeared to have significant negative impact on the performance in the final examination. Focus group discussions suggest that (a) the final examination under timed conditions; (b) competing demands on time for final examination in other courses due contemporaneously; and (c) weaker motivation to sustain the momentum due to pass or near pass based on progressive assessments were the main hurdles in achieving better performance in the final examination.  相似文献   

THE RELATIVE MAGNITUDE OF SPEED AND POWER IN SCAT     

S. B. Khan 《Journal of Educational Measurement》1968,5(4):327-329

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The Impact of Educational Technology on Training and Development in the Banking Sector     

Razia Khan  Abdulla Kader 《Africa Education Review》2018,15(1):85-107

Recent sustainability and training and development reports have shown that banks are increasingly investing in training and development. While most banks are already utilising different forms of e-learning for certain types of training interventions and employee assessments, the focus going forward is to reinvent training within the organisation by making it more efficient, convenient, accessible and fun with educational technology. The aim of the study reported on in this article was to investigate the impact that educational technology has on training and development downtime, accessibility with regard to different learning platforms, return on investment (ROI), organisational culture and learning within the banking environment. A targeted sample of 110 respondents from 30 branches of one of the leading banks in South Africa were surveyed using a stratified random sampling approach. The study revealed that the bank has a strong organisational culture; and educational technology at the bank showed positive results with regard to decreasing downtime and seeing increased ROI.  相似文献   

Environmental knowledge and behavioural outcomes of tourism students in Australia: towards testing a range of mediation and moderated mediation effects     

Johra Kayeser Fatima  Habib Zaman Khan  Edmund Goh 《Environmental Education Research》2016,22(5):747-764

Our study examines the environmental knowledge (EK) and behavioural outcomes of students studying ecotourism in Sydney, Australia. Three competing models were tested to examine the relationships between EK, participation intention (PI) in ecotourism programs, landscape likeability (LL) and social interactions (SI); and the study also tested the moderated mediation influence of gender differences and relationship length on mediators. Partial least squares-based structural equation modelling (PLS-SEM) was used to analyse the data collected from 173 residential tourism students. Key findings suggest whilst LL and PI are significant outcomes of EK, LL has a stronger mediating effect on PI compared to SI; and all mediation effects are further moderated by gender differences. However, only Model 3 confirms the moderating effect of the length of relationship. Noting the key role that EK plays in influencing their PI and LL, our study also suggests ways of developing the tourism students’ EK, through various experiential and pedagogical interventions.  相似文献   

Glial cells: The other cells of the nervous system     

Medha S. Rajadhyaksha  Yasmin Khan 《Resonance》2002,7(1):4-10

Carl Ludwig Schleich (1859–1922) was an anaesthetist and a surgeon who for the first time emphasized the role of neuroglia in brain function. In an era that was dominated by the idea that neurons alone were functional units of the nervous system and that glial cells were a mere glue holding neurons in place, Schleich insisted that glia had a prominent functional role to play. He suggested that interactions between neurons and glia were so strong that it is necessary to consider brain as a neuron-glia system whose performance is dependent on both the cell types. Today Carl Ludwig Schleich is considered the forgotten ancestor to a new breed of neurobiologists, the gliologists, who specialize in working on these neglected cells of the nervous system. Though outnumbering the neurons and occupying almost half the volume of the brain, glial cells have been given little importance in textbooks of neurobiology and are very often cursorily mentioned in discussions related to brain function. Glial cells deserve a better deal, for over the years a lot of evidence has accumulated to prove that they perform a wide spectrum of functions. This is the first of a series of articles that aims to update students on what is known about glia today. It provides an overview of the various types of glia and their origins. The following articles will deal with each of the glial sub-types and their functions.  相似文献