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51.
Jai Prakash Tripathi Syed Abbas Gui-Quan Sun Debaldev Jana Cui-Hua Wang 《Journal of The Franklin Institute》2018,355(15):7466-7489
In this paper, we propose a diffusive prey-predator system with mutually interfering predator (Crowley–Martin functional response) and prey reserve. In particular, we develop and analyze both spatially homogeneous model based on ordinary differential equations and reaction-diffusion model. We mainly investigate the global existence and boundedness of positive solution, stability properties of homogeneous steady state, non-existence of non-constant positive steady state, conditions for Turing instability and Hopf bifurcation of the diffusive system analytically. Conventional stability properties of the non-spatial counterpart of the system are also studied. The analysis ensures that the prey reserve leaves stabilizing effect on the stability of temporal system. The prey reserve and diffusive parameters leave parallel impact on the stability of the spatio-temporal system. Furthermore, we illustrate the spatial patterns via numerical simulations, which show that the model dynamics exhibits diffusion controlled pattern formation by different interesting patterns. 相似文献
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Ghasem Janbabai Abbas Alipour Sina Ehteshami Seyedeh-Samaneh Borhani Touraj Farazmandfar 《Indian journal of clinical biochemistry : IJCB》2018,33(4):450-455
Trace metals are beneficial nutrient materials that act as essential cofactors in physiological processes. Recent evidence suggests that increase or decrease in certain trace metals may be related with risk and development of chronic diseases such as cancer. This study analyzed some trace elements level in hair and nail of patients with stomach cancer, and compared with their level in healthy controls. Trace elements (Cu, Fe, K, Li, Mg, Mn, Na, P, Se, Sr and Zn) are estimated in hair and nail of the 73 cancer patients and 83 controls by atomic absorption spectrophotometric method. The levels of Cu, K, Li, P and Se in hair and nail samples, were significantly higher in cases than controls. Levels of Mg and Sr were significantly lower in cases than controls. Fe level in hair samples was significantly higher in cases than controls. The mean concentrations of Fe, Se and P significantly increased with increasing cancer stage in the hair of patients. The average concentration of k also significantly increased with increasing cancer stage in the nail of patients. The results of our study show that there is an association between the increase in Cu, K, Li, P, Se and Fe, and stomach cancer development. Our results reveal that the increase in the trace elements could be a potential diagnostic marker to predict cancer progression and its etiology. 相似文献
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Israr Ahmad Tabrez Jafar Farzana Mahdi Md. Arshad Siddharth Kumar Das Shah Waliullah Abbas Ali Mahdi 《Indian journal of clinical biochemistry : IJCB》2018,33(4):429-437
Osteoporosis is a systemic disease with a strong genetic component. Vitamin D receptor (VDR) has been suggested as a candidate gene for osteoporosis. Therefore the present study was aimed to investigate the pattern of allelic variants of VDR gene polymorphism (FokI and BsmI), its influence on vitamin D levels and bone mineral density (BMD) in North Indian postmenopausal women with osteoporosis for possible genetic association. 254 postmenopausal osteoporotic women and 254 postmenopausal non osteoporotic women were included in the study. VDR FokI and BsmI gene polymorphism gene were assessed by the PCR-RFLP method. Serum 25-hydroxyvitamin D was measured by the ELISA. BMD at the L1–L4 lumbar spine, hip, forearm and femoral neck was assessed by dual energy X-ray absorptiometry. The average BMD at spine and hip in postmenopausal women with bb and spine, hip, femoral neck and forearm with ff genotype had significantly low BMD. The frequency of ff genotype and f allele was significantly higher in postmenopausal osteoporotic women when compared with postmenopausal non osteoporotic women. However, no significant association was found between the genotypes and vitamin D levels. Our study reveals that VDR gene FokI and BsmI polymorphism is significantly associated with low bone mineral density. Therefore the ff genotype and f allele of VDR FokI gene may be used as an important risk factor for osteoporosis. 相似文献
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Abbas Ali Mahdi Anu Chandra Raj Kumar Singh Sanjeev Shukla L. C. Mishra Sohail Ahmad 《Indian journal of clinical biochemistry : IJCB》2003,18(2):8-15
In the present study the antioxidative potential ofMomordica charantia, Azadirachta indica, Allium sativum andOcimum sanctum was assessed in streptozotocin induced diabetic rats. Lipid peroxide levels were also measured in normal, diabetic and treated
animals. Malondialdehyde (MDA) levels were significantly higher and antioxidant activity was found low in diabetic groups
as compared to the control groups, and significant alteration in both the MDA levels and antioxidant activity was also observed
when the above herbal hypoglycemic agents were given to diabetic rats. On the basis of our results we conclude thatM. charantia, A. indica, A. sativum andO. sanctum are not only useful in controlling the lipid peroxide levels but are also helpful in further strengthening the antioxidant
potential. 相似文献
55.
Ricardo Eiraldi Barry McCurdy Billie Schwartz Courtney Benjamin Wolk Manju Abraham Abbas F. Jawad Bonnie K. Nastasi Jennifer A. Mautone 《Psychology in the schools》2019,56(8):1230-1245
This paper describes implementation (fidelity, perceived acceptability) and tier 1 and Tier 2 outcomes of school‐wide positive behavior interventions and supports approach including mental health supports at Tier 2 in two K‐8 urban schools. Interventions for Tier 2 consisted of three manualized group cognitive behavioral therapy (GCBT) protocols for externalizing behavior problems, depression, and anxiety. Tier 1 and Tier 2 interventions were implemented with fidelity but program feasibility for Tier 2 was in question because school personnel needed a great deal of external support to implement the interventions. Tier 1 interventions were associated with a decrease in office discipline referrals. Students participating in GCBT showed a significant decrease in mental health diagnostic severity at posttreatment. A discussion of perceived and actual implementation barriers and how they were addressed is provided. Implications for practice in low‐income urban schools are discussed. 相似文献
56.
Geri Adler Briana M. Lawrence Songthip T. Ounpraseuth Ali Abbas Asghar-Ali 《Educational gerontology》2015,41(12):903-915
Dementia is a major public health concern. Educating health-care providers about dementia warning signs, diagnosis, and management is paramount to fostering clinical competence and improving patient outcomes. The objective of this project was to describe and identify educational and training needs of staff at community-based outpatient clinics related to treating and managing veterans with dementia. Health professionals took an online survey consisting of questions related to general knowledge and skills in working with veterans with dementia and their families, staff training, and attitudes toward people with dementia. Most participants considered knowledge of dementia important; however, few reported having received training in dementia care within the past year. Furthermore, over half of participants considered themselves beginners in terms of knowledge and skills in dementia care. Regarding training needs, topics that could improve the overall care of veterans with dementia and their caregivers were most often cited. Participants reported being most satisfied with in-person training. Physicians rated their dementia knowledge and skill as greater than nurses'/other medical professionals’ and support staff's. Compared with support staff, nurses/other medical professionals held more positive attitudes toward persons with dementia. Survey results suggest that staff are interested in improving knowledge of, and skills for, working with persons with dementia, and that job classification is associated with differences in attitudes. 相似文献
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58.
Vishnu Kumar Awasthi Farzana Mahdi Ramesh Chander Ashok Kumar Khanna Jitendra Kumar Saxena Ranjana Singh Abbas Ali Mahdi Raj Kumar Singh 《Indian journal of clinical biochemistry : IJCB》2015,30(1):78-83
The hypolipidemic activity of Cassia tora (Chakvat, Chakunda) (Family: Caesalpiniaceae) seeds extract have been studied in two models of hyperlipidemia in rats. In an acute model, hyperlipidemia was induced by injecting a single dose of Triton WR-1339 (400 mg/kg, b.w.) intraperitonially in rats. Feeding with C. tora seed extract at the dose of 500 mg/kg, b.w. exerted significant lipid lowering effect as assessed by the reversal of plasma levels of total cholesterol, phospholipids, triglyceride and reactivation of post heparin lipolytic activity. In the chronic model, hyperlipidemia was induced by feeding with cholesterol rich-HFD in rats. The treatment with seeds extract of C. tora (500 mg/kg, b.w.) simultaneously for 15 days also caused lowering of lipid levels in plasma and liver following reactivation of plasma post heparin lipolytic activity and hepatic lipoprotein lipase activity in animals. The hypolipidemic activity of C. tora seeds was compared with a standard drug guggulipid (200 mg/kg, b.w.) in both models. 相似文献
59.
ABSTRACTThis study explores the current status and features of Pakistan's academic library Web sites. A checklist describing features and content was prepared based on a review of the literature related to academic libraries’ Web sites. Then, all 85 library Web sites of Pakistani universities and degree-awarding institutions recognized by the Higher Education Commission (HEC) of Pakistan were surveyed and analyzed using the checklist. Interviews with library professionals were conducted to learn more about the problems and issues with building and maintaining library Web sites. Results indicate that Pakistani academic library Web sites have effective features such as contrasting color schemes, easily readable text, minimal use of horizontal scrolling, and English-language text. Staff information, OPACs, and navigation features are also widely found on the Web sites. Features found less frequently include the use of Web 2.0 technologies, Web site aid tools, information about library buildings, and general library information. By offering information about the status of Pakistani academic library Web sites, the study can serve as a foundation for discussion between libraries and other parts of the university, as well as a benchmark for evaluating the progress of academic library Web sites in Pakistan 相似文献
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