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| 1 | Comparative investigation of the free radical scavenging potential and anticancer property of Diospyros blancoi(Ebenaceae)显示文摘Objective: To investigate the comparative effects of Diospyros blancoi(Ebenaceae)leaves(DBL), root bark(DBRB) and stem bark(DBSB) on free radicals and cancer.Methods: The polyphenol contents, antioxidant and free radical scavenging properties were determined using standard spectrophotometric methods. Cytotoxicity and anticancer activities were performed on brine shrimp nauplii and Ehrlich ascite carcinoma cells, respectively.Results: Among the extracts, DBSB showed the highest total antioxidant capacity and reducing capacity on ferrous ion. Based on 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radical scavenging activities, DBSB showed(95.760 ± 0.343)% and(67.460 ± 2.641)%scavenging with IC50of(3.10 ± 0.17) and(50.00 ± 3.11) mg/m L, respectively. The IC50 values of standard butylated hydroxytoluene and catechin(CA) for 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radicals were(8.50 ± 0.25) and(75.00 ± 0.14) mg/m L,respectively suggesting that DBSB had a significant(P < 0.05) radical scavenging activity than standards. In lipid peroxidation inhibition assay, the inhibitory activity of the extracts and the standard was in the following order: DBSB > DBRB > CA > DBL.Also, the phenolic [(139.91 ± 3.924) mg gallic acid equivalent/g] and flavonoid contents[(412.00 ± 16.70) mg catechin equivalent/g)] of DBSB were higher than that of other extracts. In addition, the DBSB showed the moderate cytotoxic and anticancer properties.Conclusions: Our results indicate that Diospyros blancoi stem bark had the significant highest antioxidant and free radical scavenging properties as well as moderate anticancer activity.Hence, we assume that the anticancer activity of this plant can be, at least in part, attributed to its content in phenolic compounds as well as its significant free radical scavenging properties. | Muhammad Ali Khan Mahbubur Rahman Nazmul Sardar Saiful Islam Arman Badrul Islam Jahangir Alam Khandakar Mamunur Rashid Golam Sadik AHM Khurshid Alam | 2016 | Asian Pacific Journal of Tropical Biomedicine2016，6，5： | 3 |
| 2 | measurement and error compensation of multi-axis machine tools显示文摘 | Mahbubur Rahman Jouko Heikkala Kauko Lappalainen Modeling | 2000 | Internationl Journal of Machine Tools & Manufacture2000，40，： | 1 |
| 3 | Connexin 36 promotes cortical spreading depolarization and ischemic brain damage显示文摘 | Panagiotis Bargiotas Sajjad Muhammad Mahbubur Rahman Nurith Jakob Raimund Trabold Elke Fuchs Lothar Schilling Nikolaus Plesnila Hannah Monyer Markus Schwaninger | 2012 | Brain Research2012，，： | 1 |
| 4 | Bastee eviction and housing rights:a case of Dhaka,Bangladesh显示文摘 | MOHAMMED MAHBUBUR RAHMAN | 2001 | Habitat International2001，25，： | 1 |
| 5 | Thermal diffusivity measurements on ternary Ge–Te–Tl glasses using Photo-thermal Deflection method: Effect of thallium addition显示文摘 | Mohammad Mahbubur Rahman K. Rukmani Rajam Sekhar S. Asokan | 2012 | Journal of Non-Crystalline Solids (-)2012，，12： | 1 |
| 6 | Wavelet - domain iterative center weighted median filter for image denoising显示文摘 | Mahbubur Rahman S M Kamurul Hasan Md | 2003 | Signal Processing2003，83，5： | 1 |
| 7 | Wavelet-domain iterative center weighted median filter for image denoising显示文摘 | Mahbubur Rahman S M Kamurul Hasan Md | 2003 | Singal Processing2003，83，5： | 1 |
| 8 | DEM simulation of particle percolation in a packed bed显示文摘The phenomenon of spontaneous particle percolation under gravity is investigated by means of the discrete element method. Percolation behaviors such as percolation velocity, residence time distribution and radial dispersion are examined under various conditions. It is shown that the vertical velocity of a percolating particle moving down through a packing of larger particles decreases with increasing the restitution coefficient between particles and diameter ratio of the percolating to packing particles. With the increase of the restitution coefficient, the residence time and radial dispersion of the percolating particles increase. The packing height affects the residence time and radial dispersion. But, the effect can be eliminated in the analysis of the residence time and radial dispersion when they are normalized by the average residence time and the product of the packing height and packing particle diameter, respectively. In addition, the percolation velocity is shown to be related to the vertical acceleration of the percolating particle when an extra constant vertical force is applied. Increasing the feeding rate of percolating particles decreases the dispersion coefficient. | Mahbubur Rahman Haiping Zhu Aibing Yu John Bridgwater | 2008 | Particuology2008，6，6： | 1 |
| 9 | Design of an automated secure garage sys- tem using license plate recognition technique显示文摘 | Afaz Uddin Ahmed Taufiq Mahmud Masum Mohammad Mahbubur Rahman | 2014 | International Journal of Intelligent Systems and Applications2014，6，2： | 1 |
| 10 | Improved restoration using wavelet-based denoising and fourier-based deconvolution显示文摘 | Mahbubur S M Rahman M.Omair A | | 0，，02： | 1 |
| 11 | Modeling, measurement and error compensation of multi-axis machine tools 显示文摘 | Mahbubur Rahman Jouko Heikkala Kauko Lappalainen | 2000 | International Journal of Machine Tools & Manufacture2000，40，10： | 1 |
| 12 | Effects of the shape of surface micropores performance of a face seal 显示文摘 | M Mahbubur Razzaque M Tanvir Rahman Faisal | 2007 | Journal of Mechanical Engineering2007，38，： | 1 |
| 13 | Waveletdomain iterative center weighted median filter for image denoising显示文摘 | Mahbubur Rahman S M Kamrul Hasan Md | 2003 | Signal Processing2003，，83： | 1 |
| 14 | Performance of mechanical face seal with surface micropores 显示文摘 | M Mahbubur Razzaque M Tanvir Rahman Faisal | 2007 | Journal of Mechanical Engineering2007，37，： | 1 |
| 15 | Modeling, measurement and error compensation of multi-axis machine tools(Partl :theory) 显示文摘 | Mahbubur Rahman Jouko Heikkala Kauko Lappalainen | 2000 | International Journal of Machine Tools & Manufacture2000，40，： | 1 |
| 16 | Relationships Between Blood Mg 2+ and Energy Metabolites/Enzymes After Acute Exhaustive Swimming Exercise in Rats显示文摘 | Md. Mahbubur Rahman Sei-Jin Lee A-Reum Mun Gareeballah Osman Adam Ra-Mi Park Gi-Beum Kim Hyung-Sub Kang Jin-Shang Kim Shang-Jin Kim Sung-Zoo Kim | 2014 | Biological Trace Element Research2014，，： | 1 |
| 17 | Wavelet-domain iterative center weighted median filter for image denoising显示文摘 | Mahbubur Rahman S M Kamrul Hasan Md | 2003 | Signal Processing2003，83，5： | 1 |
| 18 | Economic evaluation of universal BCG vaccination of Japanese infants显示文摘 | Mahbubur Rahman | 2001 | International journal of epidemiology2001，，： | 1 |
| 19 | Modeling, measurement and error compensation of multi-axis machine tools. Part I: theory显示文摘 | Mahbubur Rahman Jouko Heikkala Kauko Lappalainen | 2000 | International Journal of Machine Tools and Manufacture2000，，10： | 1 |
| 20 | Impact of lockdown relaxation and implementation of the facecovering policy on mental health: A United Kingdom COVID-19 study显示文摘BACKGROUND Pandemic mitigation policies,such as lockdown,are known to impact on mental health of individuals.Compulsory face covering under relaxed lockdown restrictions gives assurance of less transmission of airborne infection and has the potential to improve mental health of individuals affected by restrictions.AIM To examine the association of the lockdown relaxation and the implementation of the face covering policy on the mental health of the general population and subgroups in the United Kingdom using interrupted time series model.METHODS Using a web-based cross-sectional survey of 28890 United Kingdom adults carried out during May 1,2020 to July 31,2020,changes in mental health status using generalised anxiety disorder(GAD-7),and impact of events scale-revised(IES-R)scales are examined,at the dates of the first lockdown relaxation(July 4,2020)and the subsequent introduction of face covering(July 24,2020)in United Kingdom.A sharp regression discontinuity design is used to check discontinuities in mental health outcomes at policy-change dates.RESULTS Average GAD-7 scores of participants were 5.6,5.6 and 4.3 during the lockdown period,the lockdown relaxation phase and the phase of compulsory face covering,respectively,with lower scores indicating lower anxiety levels.Corresponding scores for IES-R were 17.3,16.8 and 13.4,with lower scores indicating less distress.Easing lockdown measures and subsequent introduction of face covering,on average,reduced GAD-7 by 0.513(95%CI:0.913-0.112)and 1.148(95%CI:1.800-0.496),respectively.Corresponding reductions in IES-R were 2.620(95%CI:4.279-0.961)and 3.449(95%CI:5.725-1.172).These imply that both lockdown relaxation and compulsory face-covering have a positive association with mental health scores(GAD-7 and IES-R).CONCLUSION The differential impact of lockdown and relaxation on the mental health of population sub-groups is evident in this study with future implications for policy.Introduction of face covering in public places had a stronger positive association with mental health than lockdown relaxation. | Shanaya Rathod Saseendran Pallikadavath Elizabeth Graves Mohammad Mahbubur Rahman Ashlea Brooks Mustafa G Soomro Pranay Rathod Peter Phiri | 2021 | World Journal of Psychiatry2021，11，12： | 0 |
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