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| 1 | Post-traumatic thrombotic microangiopathy: What trauma surgeons need to know?显示文摘Thrombotic microangiopathy(TMA)is characterized by systemic microvascular thrombosis,target organ injury,anemia and thrombocytopenia.Thrombotic thrombocytopenic purpura,atypical hemolytic uremic syndrome and Shiga toxin E-coli-related hemolytic uremic syndrome are the three common forms of TMAs.Traditionally,TMA is encountered during pregnancy/postpartum period,malignant hypertension,systemic infections,malignancies,autoimmune disorders,etc.Recently,the patients presenting with trauma have been reported to suffer from TMA.TMA carries a high morbidity and mortality,and demands a prompt recognition and early intervention to limit the target organ injury.Because trauma surgeons are the first line of defense for patients presenting with trauma,the prompt recognition of TMA for these experts is critically important.Early treatment of post-traumatic TMA can help improve the patient outcomes,if the diagnosis is made early.The treatment of TMA is also different from acute blood loss anemia namely in that plasmapheresis is recommended rather than platelet transfusion.This article familiarizes trauma surgeons with TMA encountered in the context of trauma.Besides,it provides a simplified approach to establishing the diagnosis of TMA.Because trauma patients can require multiple transfusions,the development of disseminated intravascular coagulation must be considered.Therefore,the article also provides different features of disseminated intravascular coagulation and TMA.Finally,the article suggests practical points that can be readily applied to the management of these patients. | Mohammad A.Hossain Nasim Ahmed Varsha Gupta Ravneet Bajwa Marjan Alidoost Arif Asif Tushar Vachharajani | 2021 | Chinese Journal of Traumatology2021，24，2： | 1 |
| 2 | An E-learning System Architecture based on Cloud Computing显示文摘 | A.Hossain X.Huang | | 0，，02： | 1 |
| 3 | Effects of aspect ratio on unsteady solutions through curved duct flow显示文摘The effects of the aspect ratio on unsteady solutions through the curved duct flow are studied numerically by a spectral based computational procedure with a temperature gradient between the vertical sidewalk for the Grashof number 100≤Gr ≤2 000.The outer wall of the duct is heated while the inner wall is cooled and the top and bottom walls are adiabatic.In this paper,unsteady solutions are calculated by the time history analysis of the Nusselt number for the Dean numbers Dn = 100 and Dn = 500and the aspect ratios 1 ≤ 7 ≤ 3.Water is taken as a working fluid(Pr = 7.0).It is found that at Dn = 100,there appears a steady-state solution for small or large Gr.For moderate Gr,however,the steady-state solution turns into the periodic solution if 7 is increased.For Dn = 500,on the other hand,it is analyzed that the steady-state solution turns into the chaotic solution for small and large Gr for any 7 lying in the range.For moderate Gr at Dn = 500,however,the steady-state flow turns into the chaotic flow through the periodic oscillating flow if the aspect ratio is increased. | R.N.MONDAL S.ISLAM K.UDDIN A.HOSSAIN | 2013 | Applied Mathematics and Mechanics(English Edition)2013，34，9： | 0 |
| 4 | Superconducting joints using reacted multifilament MgB_(2)wires:A technology toward cryogen-free MRI magnets显示文摘The development of superconducting joining technology for reacted magnesium diboride(MgB_(2))conductors remains a critical challenge for the advancement of cryogen-free MgB_(2)-based magnets for magnetic resonance imaging(MRI).Herein,the fabrication of superconducting joints using reacted carbon-doped multifilament MgB_(2)wires for MRI magnets is reported.To achieve successful superconducting joints,the powder-in-mold method was employed,which involved tuning the filament protection mechanism,the powder compaction pressure,and the heat treatment condition.The fabricated joints demonstrated clear superconducting-to-normal transitions in self-field,with effective magnetic field screening up to 0.5 T at 20 K.To evaluate the interface between one of the MgB_(2)filaments and the MgB_(2)bulk within the joint,serial sectioning was conducted for the first time in this type of superconducting joint.The serial sectioning revealed space formation at the interface,potentially caused by the volume shrinkage associated with the MgB_(2)formation or the combined effect of the volume shrinkage and the different thermal expansion coefficients of the MgB_(2)bulk,the filament,the mold,and the sealing material.These findings are expected to be pivotal in developing MgB_(2)superconducting joining technology for MRI magnet applications through interface engineering. | Dipak Patel Akiyoshi Matsumoto Hiroaki Kumakura Yuka Hara Toru Hara Minoru Maeda Hao Liang Yusuke Yamauchi Seyong Choi Jung Ho Kim Md Shahriar A.Hossain | 2024 | Journal of Magnesium and Alloys2024，12，1： | 0 |
| 5 | Recent progress in MgB_(2)superconducting joint technology显示文摘Magnesium diboride(MgB_(2))magnets have the potential to be the next-generation liquid-helium-free magnet for magnetic resonance imaging(MRI)application due to their relatively high superconducting transition temperature,high current density and low raw material cost compared with current commercial niobium-titanium(Nb-Ti)magnets.A typical superconducting magnet includes several coils.To produce an ultra-stable magnetic field for imaging in MRI,a superconducting electromagnet operating in a persistent mode is crucial.Superconducting coils of the electromagnet in MRI are short-circuited to operate in the persistent mode by connecting coils with superconducting joints.Per-sistent joints have been demonstrated for in-situ and ex-situ wires of both mono-and multi-filamentary structures,made predominantly by PIT techniques similar to those used in wire production.To realise further engagement of MgB_(2)in MRI applications,enhancing the performance of MgB_(2)superconducting joints is essential.This literature review summarises research and development on MgB_(2)superconducting joining technology. | Hao Liang Dipak Patel Mahboobeh Shahbazi Andrzej Morawski Daniel Gajda Matt Rindfleisch Richard Taylor Yusuke Yamauchi Md Shahriar A.Hossain | 2023 | Journal of Magnesium and Alloys2023，11，7： | 0 |
| 6 | Interplay between cold densification and malic acid addition (C4H6O5) for the fabrication of near-isotropic MgB2 conductors for magnet application显示文摘The effect of cold high pressure densification(CHPD)on anisotropy of the critical current density(Jc)in《in situ》single core binary and alloyed MgB2 tapes has been determined as a function of temperatures at 4.2 K,20 K and 25 K as well as at applied magnetic fields up to 19 T.The study includes binary and C4H6O5(malic acid)doped MgB2 tapes before and after CHPD.It is remarkable that the CHPD process not only improved the Jc values,in particular at the higher magnetic fields,but also decreased the anisotropy ratio,Г=JC^///JC^⊥In binary MgB2 tapes,the anisotropy factor F increases with higher aspect ratios,even after applying CHPD.In malic acid(C4H6O5)doped tapes,however,the application of CHPD leads only to small enhancements ofГ,even for higher aspect ratios.This is attributed to the higher carbon content in the MgB2 filaments,which in turn is a consequence of the reduced chemical reaction path in the densified filaments.At all applied field values,it was found that CHPD processed C4H6O5 doped tapes exhibit an almost isotropic behavior.This constitutes an advantage in view of industrial magnet applications using wires with square or slightly rectangular configuration. | Md.Shahriar A.Hossain Carmine Senatore Yusuke Yamauchi Mislav Mustapic Daniel Gajda Dipak Patel Aslam Khan Jung Ho Kim Andrzej J Morawski Rene Flukiger | 2020 | Journal of Magnesium and Alloys2020，8，2： | 0 |
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