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| 1 | An investigation of the effects of synthesized zinc oxide nanoparticles on the properties of water-based drilling fluid显示文摘The deterioration of drilling fluid properties during deep drilling causes problems like inefficient cutting removal,fluid invasion,and shale swelling,which increases non-productive time(NPT)and cost.Recently nanoparticles(NPs)based drilling fluid are introduced to address these impediments since these particles prove their advantages in different stages of petroleum exploration and recovery.Previous developments are concerned with the use of commercial zinc oxide(ZnO)NPs in inorganic KCl salt-based drilling fluid,although application of KCl in drilling fluid arouses environmental complications.In this study,ZnO NPs prepared in the laboratory are used in water-based drilling fluid(WBDF)to assess the effect of nanoparticles on the properties of drilling fluid at two temperature conditions of 40C and 80C.A base mud is formulated,and ZnO NPs with five different concentrations of 0.05,0.1,0.5,1.0,and 2.0 wt%are mixed with the base mud.The experimental analysis shows that NPs improve the rheological properties of WBDF.When the concentration of NPs was 0.1 wt%,the yield point increased by 61.54%at 40C,and when the concentration of NPs was 0.05 wt%,the yield point increased by 60%at 80C.Besides,when the concentration of NPs is 0.05 wt%,10-sec gel strengths are enhanced by 25%and 50%at 40C and 80C,respectively.The API low-pressure low-temperature(LPLT)filter volume is not significantly affected by the addition of NPs in WBDF.However,mud cake thickness continuously reduces with the increase of NPs concentrations.This result reveals that a superior rheological improvement is achieved at low NPs concentration(0.05 wt%)at higher temperature. | Muhammad Hasibul Ahasan MdFazla Alahi Alvi Nayem Ahmed Md.Saiful Alam | 2022 | Petroleum Research2022，7，1： | 2 |
| 2 | Neuromyelitis optica(Devic's disease)following chicken pox显示文摘 | Ahasan HA Rafiquenddin AK Chowdhury MA | 1994 | Trop-Doct1994，24，2： | 1 |
| 3 | Inflammatory regulation of glucocorticoid metabolism in mesenchymal stromal cells显示文摘 | Ahasan MM1 Hardy R Jones C | 2012 | Arthritis Rheum2012，64，7： | 1 |
| 4 | Neuromyelitis optica(Devic' s disease) following chicken pox显示文摘 | Ahasan HA Rafiqueuddin AK Chowdhury MA | 1994 | Trop - Doct1994，24，2： | 1 |
| 5 | Synergistic induction of local glucocorticoid generation by inflammatory cytokines and glcocorticoids:implications for inflammation associated bone loss显示文摘 | Kaur K Hardy R Ahasan MM | 2010 | Ann Rheum Dis2010，69，6： | 1 |
| 6 | A case of 25 year old dwarf with classic Cockayne syndrome显示文摘 | Mohammed FR Chowdhury FR Nur Z Shams MZ Alam MB Ahasan H | 2010 | J Med2010，11，2： | 1 |
| 7 | Motion Analysis Measurements of Body Movements during Standing: Asso- ciation with Age and Sex显示文摘 | Kejonen P Kauranen K Ahasan R | 2002 | Int J Rehabil Res2002，25，4： | 1 |
| 8 | Tetrodotoxin poisoning:A clinical analysis,role of neostigmine and short-term outcome of 53 cases显示文摘 | Chowdhury FR Nazmul Ahasan HA Mamunur Rashid AK | | 0，，： | 1 |
| 9 | Ergonomics of Living Environment for the People with Special Needs显示文摘 | Rabiul Ahasan Donna Campbell Alan Salmoni John Lewko | 2011 | Journal of Physiological Anthropology and Applied Human Science2011，20，3： | 1 |
| 10 | Synergistic induction of local glucocorticoid generation by inflammatory cytokines and glucocor- ticoids: implications for inflammation associated bone loss 显示文摘 | Kaur K Hardy R Ahasan MM | 2010 | Ann RheumDis2010，69，6： | 1 |
| 11 | Adaptation of infectious bursal disease virus(IBDV) on vero cell line显示文摘 | AHASAN M M HOSSAIN K M ISLAM M R | 2002 | Online J Ogical Sci2002，2，9： | 1 |
| 12 | Cytotoxicity study of some pyrazole derivatives显示文摘 | Ahasan B Islam R | 2007 | Bangladesh J Pharmacol2007，，2： | 1 |
| 13 | Necessity of antibiotics prophylaxis during extracorporeal shock wave lithotripsy 显示文摘 | Islam MA Shamecm IA Ahasan DN | 2005 | Mymensingh Med J2005，14，1： | 1 |
| 14 | Neuro- myelitis optical (Devic's disease) following chicken pox 显示文摘 | Ahasan HA Rafiqueuddin AK Chowdhury MA | 1994 | Trop-Doct1994，24，2： | 1 |
| 15 | Motion analysis measurements of body movements during standing: association with age and sex显示文摘 | Kejoncn P Kauranen K Ahasan R | 2002 | Int J Rehabil Res2002，25，4： | 1 |
| 16 | Dual-step hybrid SERS scheme through the blending of CV and MoS_(2) NPs on the AuPt core-shell hybrid NPs显示文摘Along with a wide range of applications,the surface-enhanced Raman spectroscopy(SERS)is a promi-nent analytical technique to recognize and detect molecules and materials even at an extremely low mo-lar concentration.In this work,a unique hybrid SERS platform is demonstrated by the incorporation of molybdenum disulfate(MoS_(2))nanoparticles(NPs)onto the core-shell AuPt hybrid NPs(HNPs)for the en-hanced molecular Raman vibration of crystal violet(CV).The hybrid platform takes the advantage of both the electromagnetic mechanism(EM)offered by the AuPt HNPs and chemical mechanism(CM)owing to the MoS_(2)NPs.The distinctive core-shell morphology of AuPt HNPs with the high-density background Au NPs is attained by a unique two-step solid-state dewetting method,which can offer a high concentration of electromagnetic hot spots.At the same time,the MoS_(2)NPs can provide an ample charge transfer with abundant active sites.Through the hybrid SERS approach,a dramatic SERS enhancement of CV Raman vibration is demonstrated,and the SERS capability is thoroughly studied.In addition,the finite-difference time-domain(FDTD)simulations provide a deeper understanding of the electromagnetic field distributions for various configurations of nanostructures and their hybrid combinations:i.e.,HNPs,alloy NPs,MoS_(2)/HNPs configurations. | Rutuja Mandavkar Shusen Lin Rakesh Kulkarni Sanchaya Pandit Shalmali Burse Md Ahasan Habib Puran Pandey Sundar Kunwar Jihoon Lee | 2022 | Journal of Materials Science & Technology2022，，12： | 0 |
| 17 | A Study on Heat Transfer Enhancement through Various Nanofluids in a Square Cavity with Localized Heating显示文摘A two-dimensional(2D)laminar flow of nanofluids confined within a square cavity having localized heat source at the bottom wall has been investigated.The governing Navier–Stokes and energy equations have been non dimensionalized using the appropriate non dimensional variables and then numerically solved using finite volume method.The flow was controlled by a range of parameters such as Rayleigh number,length of heat source and nanoparticle volume fraction.The numerical results are represented in terms of isotherms,streamlines,velocity and temperature distribution as well as the local and average rate of heat transfer.A comparative study has been conducted for two different base fluids,ethylene glycol and water as well as for two different solids Cu and Al_(2)O_(3).It is found that the ethylene glycol-based nanofluid is superior to the water-based nanofluid for heat transfer enhancement. | Sheikh Hassan Didarul Ahasan Redwan Md.Mamun Molla Sharaban Thohura M.Abu Taher Sadia Siddiqa | 2021 | Energy Engineering2021，118，6： | 0 |
| 18 | Novel Compact UWB Band Notch Antenna Design for Body-Centric Communications显示文摘This research analyzes and implements an innovative and tiny ultrawideband(UWB)antenna with band-notched features for body-centric communication.The shape of the designed antenna looks like a‘swan’with a slotted patch.Computer Simulation Technology(CST)is used to assess and investigate the performance of this antenna.With a band notch,this antenna can prevent interference from Wireless Local Area Network(WLAN)(5.15–5.825 GHz)and Worldwide Interoperability for Microwave Access(WiMAX)(5.25–5.85 GHz)systems.At first,the performance parameters like return loss response,gain,radiation patterns,and radiation efficiency of this UWB antenna are evaluated.After that,the human body effects on the antenna performance of the antenna are also examined to place the antenna at various distances away from 3-layers of phantom body model at different frequencies.All the on-body performance parameter results are compared and analyzed with free space performance parameter results.Lastly,by changing patch slot length and ground plane length,parametric studies were done for performance comparison.According to this research,it is noticed that the antenna is tiny and new.It shows good performance in body case as well.Hence,the antenna is very suitable for healthcare applications. | Sk Raziul Ahasan Kaisarul Islam Mohammad Monirujjaman Khan Mehedi Masud GurjotSingh Gaba Hesham A.Alhumyani | 2022 | Computer Systems Science & Engineering2022，40，2： | 0 |
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