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OPTIMIZATIONS ON TOTALLY REAL SUBMANIFOLDS OF LCS-MANIFOLDS USING CASORATI CURVATURES
Shahid, Mohammad Hasan,Siddiqui, Aliya Naaz Korean Mathematical Society 2019 대한수학회논문집 Vol.34 No.2
In the present paper, we derive two optimal inequalities for totally real submanifolds and C-totally real submanifolds of LCS-manifolds with respect to Levi-Civita connection and quarter symmetric metric connection by using T. Oprea's optimization method.
Adsorption Behavior of Pb(II) Onto Potassium Polytitanate Nanofibres
Shahid, Mohammad,Tijing, Leonard D.,El Saliby, Ibrahim,McDonagh, Andrew,Kim, Jong-Beom,Kim, Jong-Ho,Shon, Ho Kyong American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.2
<P>Potassium polytitanate nanofibres prepared by a hydrothermal method were investigated for their possible application in removing toxic metals from aqueous solution. Particular attention was paid to employing the titanate as a novel effective adsorbent for the removal of Pb(II). Batch adsorption experiments demonstrated that the adsorption was influenced by various conditions such as solution pH, adsorbent dosage and initial Pb(II) concentration. The results showed that the adsorption rate was faster in the first 5 min and equilibrium was achieved after 180 min. The maximum amount of adsorption was detected at pH 5. Potassium titanate showed much higher adsorption capacity compared to P25. The kinetic studies indicated that the adsorption of Pb(II) onto titanate best fit the pseudo-second-order kinetic model. FTIR spectra revealed that the hydroxyl groups in titanate were responsible for Pb(II) adsorption. The principal mechanism of the adsorption of Pb(II) in the present study is attributed to both ion exchange and oxygen bonding. The adsorption desorption results demonstrated that the titanate could be readily regenerated after adsorption. Therefore, the present titanate exhibits great potential for the removal of Pb(II) from wastewater.</P>
Schwannoma of the Scrotum: Case Report and Review of the Literature
Mohammad Shahid,Syed Shamshad Ahmad,Shaista M Vasenwala,Aysha Mubeen,Sufian Zaheer,Mohammed Azfar Siddiqui 대한비뇨의학회 2014 Investigative and Clinical Urology Vol.55 No.3
Schwannomas are benign nerve sheath tumors composed of Schwann cells, which normallyproduce the insulating myelin sheath covering the peripheral nerves. Commonlocations include the head, neck, mediastinum, and retroperitoneum. These tumors areusually asymptomatic until they become large and compress the surrounding tissues. Most schwannomas occur during the third and fourth decades of life, with an equal genderdistribution. We present the case of a schwannoma that originated in the scrotum.
Md Abdus Shahid,Abdur Rahim,Mohammad Asaduzzaman Chowdhury,Mohammad Abul Kashem 경희대학교 융합한의과학연구소 2022 Oriental Pharmacy and Experimental Medicine Vol.22 No.2
Nigella sativa (N. sativa) is extensively used as medicinal plant all over the world. It has the potential properties as the antiviral and antibacterial application. Its seed contain thymoquinone (TQ), thymohydroquinone (THQ), thymol (THY), p-cymene as major and other minor components. TQ and THQ exhibit broad spectrum of antimicrobial properties against the activity of bacteria, viruses, parasites, schistosoma and fungi. This work provides credence to the fabrication of antibacterial nanofibrous membrane by electrospinning machine from N. sativa extract with polyvinyl alcohol (PVA) solution for wound dressing. The morphology of the developed membrane is also characterized using scanning electron microscope. Fourier transform infrared spectroscopy (FTIR) data has been showed that the functional groups of N. sativa are present in the prepared PVA-N. sativa nanofibrous membrane and its antibacterial activity was investigated. The disk diffusion method has been used to evaluate the antibacterial activity of PVA-N. sativa nanofibrous membrane against Staphylococcus aureus (S. aureus) bacteria and the inhibition zone with a value of 10 mm is formed. Considering the inherent properties of N. sativa, a conceptual reaction mechanism has been proposed to deactivate the viral proteins by the action of TQ and THQ.
Mohammad Enayet Hossain,Saif Shahrukh,Muhammad Nurul Huda,Md. Mominul Islam,Shahid Akhtar Hossain 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
Urban air quality is one of the major issues in cities worldwide, with airborne particulate matter (PM) being recognized as one of the most harmful pollutants vis-à-vis human health. In cities, roadside vegetation is exposed to all types of air pollutants, including a wide variety of particulates-borne toxic compounds. Information on plants’ tolerance towards air and PM pollution and plant-pollutant interactions is vital for screening of suitable stress-tolerant plants as a sustainable green-filtration unit. An investigation was undertaken to assess the tolerance or sensitivity of four roadside trees (Ficus benghalensis, Ficus religiosa, Mangifera indica, and Polyalthia longifolia) towards air pollutants, including particulates. The four species were sampled from four different locations of Dhaka, Bangladesh. Air pollution tolerance index (APTI) was assessed using the total chlorophyll content, ascorbic acid content, relative water content, and the pH of the extract from the leaves of the studied plants. The results were compared with similar species at a non-polluted site in a nearby area having a similar soil-climate complex. Concentration of selected biochemical parameters was found to be lower in some plant species grown at the polluted site than at the non-polluted site. The total chlorophyll content showed a decreasing trend with the increasing particulate matter loads. Different tolerance orders of species were found at the four sampling sites, which was possibly due to the varying level of air pollution in those sampling sites. APTI of the investigated plants ranged from 10.31 to 12.51 meaning they were either sensitive or intermediately tolerant. M. indica was found to be intermediately tolerant in three sampling sites. The results indicated that these evergreen species are good indicators of air pollution and can be used as an early warning tool for air pollution level that is harmful to human health. Anticipated performance index (API) was also calculated to assess the overall performance of a plant in a particular region where some socioeconomic and biological characteristics were taken into consideration. From the API, M. indica achieved the highest score (68.75%) amongst the selected plant species irrespective of different sites. The accumulation of heavy metals (Cd, Cr, Pb, and Ni) on the leaves of four tree species were investigated, and a predictive foliar metal accumulation index (MAI) was developed. F. benghalensis was found to have the highest MAI value (13.60). Based on these three indices, the most suitable plant species for green belt development in urban areas were identified and recommended for long-term air pollution management.
Association of the CYP17-34T/C Polymorphism with Pancreatic Cancer Risk
Hussain, Shahid,Bano, Raisa,Khan, Muhammad Tahir,Khan, Mohammad Haroon Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.no.sup3
Pancreatic cancer is a leading cause of fatality worldwide. Several population studies have been conducted on genetic diagnosis of pancreatic cancer but the results from epidemiologic studies are very limited. CYP17A gene has a role in disease formation but its influence on pancreatic cancer is unclear. A polymorphism in the 5'UTR promoter region of CYP17A1-34T/C (A1/A2) has been associated with multiple cancers. The aim of the current study was to assess associations of this polymorphism and socio-demographic risk factors with pancreatic cancer. A total of 255 and 320 controls were enrolled in the study, and were genetically analyzed through PCR-RFLP. Statistical analysis was conducted with observed genotype frequencies and odds ratios (ORs) and 95% CIs were estimated using unconditional logistic regression. The impact of socio-demographic factors was accessed through Kaplen-Meir analysis. According to our results, the A2/A2 genotype was significantly associated with pancreatic cancer (OR=2.1, 95%CI = 1.3-3.5). Gender female (OR=2.6, 95%CI=1.8-3.7), age group 80s/80+ years (OR=2.2, 95% CI=1.2-4), smoking both former (OR=4.6, 95% CIs=2.5-8.8) and current (OR=3.6, 95% CI=2-6.7), and family history (OR=7.1; 95%CI = 4.6-11.4) were also found associated with increased risk. Current study suggests that along with established risk factors for pancreatic cancer CYP17A1-34T/C may play a role. However, on the basis of small sample size the argument cannot be fully endorsed and larger scale studies are recommended.