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80篇 您的检索式:作者名="SINGH ALOK"
    题名 作者 年代 出处 被引量
1Thermal decomposition and kinetics of plastic bonded explosives based on mixture of HMX and TATB with polymer matrices显示文摘This work describes thermal decomposition behaviour of plastic bonded explosives(PBXs) based on mixture of 1,3,5,7-tetranitro-1,3,5,7-tetrazocane(HMX) and 2,4,6-triamino-1,3,5-trinitrobenzene(TATB)with Viton A as polymer binder. Thermal decomposition of PBXs was undertaken by applying simultaneous thermal analysis(STA) and differential scanning calorimetry(DSC) to investigate influence of the HMX amount on thermal behavior and its kinetics. Thermogravimetric analysis(TGA) indicated that the thermal decomposition of PBXs based on mixture of HMX and TATB was occurred in a three-steps. The first step was mainly due to decomposition of HMX. The second step was ascribed due to decomposition of TATB, while the third step was occurred due to decomposition of the polymer matrices. The thermal decomposition % was increased with increasing HMX amount. The kinetics related to thermal decomposition were investigated under non-isothermal for a single heating rate measurement. The variation in the activation energy of PBXs based on mixture of HMX and TATB was observed with varying the HMX amount. The kinetics from the results of TGA data at various heating rates under non-isothermal conditions were also calculated by Flynn—Wall—Ozawa(FWO) and Kissinger-Akahira-Sunose(KAS)methods. The activation energies calculated by employing FWO method were very close to those obtained by KAS method. The mean activation energy calculated by FWO and KAS methods was also a good agreement with the activation energy obtained from single heating rate measurement in the first step decomposition.Arjun Singh Tirupati C.Sharma Mahesh Kumar Jaspreet Kaur Narang Prateek Kishore Alok Srivastava 2017Defence Technology(防务技术)2017,13,1:8
2Transplantation of engineered exosomes derived from bone marrow mesenchymal stromal cells ameliorate diabetic peripheral neuropathy under electrical stimulation显示文摘Diabetic peripheral neuropathy(DPN)is a long-term complication associated with nerve dysfunction and uncontrolled hyperglycemia.In spite of new drug discoveries,development of effective therapy is much needed to cure DPN.Here,we have developed a combinatorial approach to provide biochemical and electrical cues,considered to be important for nerve regeneration.Exosomes derived from bone marrow mesenchymal stromal cells(BMSCs)were fused with polypyrrole nanoparticles(PpyNps)containing liposomes to deliver both the cues in a single delivery vehicle.We developed DPN rat model and injected intramuscularly the fused exosomal system to understand its long-term therapeutic effect.We found that the fused system along with electrical stimulation normalized the nerve conduction velocity(57.60±0.45 m/s)and compound muscle action potential(16.96±0.73 mV)similar to healthy control(58.53±1.10 m/s;18.19±1.45 mV).Gastrocnemius muscle morphology,muscle mass,and integrity were recovered after treatment.Interestingly,we also observed paracrine effect of delivered exosomes in controlling hyperglycemia and loss in body weight and also showed attenuation of damage to the tissues such as the pancreas,kidney,and liver.This work provides a promising effective treatment and also contribute cutting edge therapeutic approach for the treatment of DPN.Anamika Singh Alok Raghav Parvaiz Ahmad Shiekh Ashok Kumar 2021Bioactive Materials2021,6,8:4
3myocardial 以后梗塞巨人让室的 pseudoaneurysm 与严重的心失败介绍显示文摘 Left ventricle(LV) pseudoaneurysm is a late mechanical complication of myocardial infarction.A giant LV pseudoaneurysm is a rare presentation.We report a case of giant LV pseudoaneurysm in a post-MI patient who presented with gross congestive heart failure.The patient had a successful surgical repair of the aneurysm and had a favorable 3-mo outcome.The imaging modality and surgical treatment of the pseudoaneurysm are discussed.Rajesh Vijayvergiya Alok Kumar Sandeep S Rana Harkant Singh Goverdhan D Puri Manphool Singhal 2012World Journal of Cardiology2012,4,11:3
4Frameworks of Non-Orthogonal Multiple Access Techniques in Cognitive Radio Communication Systems显示文摘Recently,the increasing demand of radio spectrum for the next generation communication systems due to the explosive growth of applications appetite for bandwidths has led to the problem of spectrum scarcity.The potential approaches among the proposed solutions to resolve this issue are well explored cognitive radio(CR)technology and recently introduced non-orthogonal multiple access(NOMA)techniques.Both the techniques are employed for efficient spectrum utilization and assure the significant improvement in the spectral efficiency.Further,the significant improvement in spectral efficiency can be achieved by combining both the techniques.Since the CR is well-explored technique as compared to that of the NOMA in the field of communication,therefore it is worth and wise to implement this technique over the CR.In this article,we have presented the frameworks of NOMA implementation over CR as well as the feasibility of proposed frameworks.Further,the differences between proposed CR-NOMA and conventional CR frameworks are discussed.Finally,the potential issues regarding the implementation of CR-NOMA are explored.Prabhat Thakur Alok Kumar S Pandit G Singh S N Satashia 2019China Communications2019,16,6:3
5Peat swamps at Giral lignite field Western India: understanding the modelling of Barmer basin, Rajasthan, evolution through petrological显示文摘Prakash K. Singh P. K. Rajaka M. P. Singh V. K. Singh A. S. Naik Alok K. Singh 2016International Journal of Coal Science & Technology2016,3,2:2
6Grinding analysis of Indian coal using response surface methodology显示文摘Twinkle Singh Aishwarya Awasthi Pranjal Tripathi Shina Gautam Alok Gautam 2016International Journal of Coal Science & Technology2016,3,2:2
7Development of a novel myconanomining approach for the recovery of agriculturally important elements from jarosite waste显示文摘In this study, an ecofriendly and economically viable waste management approach have been attempted towards the biosynthesis of agriculturally important nanoparticles from jarosite waste. Aspergillus terreus strain J4 isolated from jarosite(waste from Debari Zinc Smelter,Udaipur, India), showed good leaching efficiency along with nanoparticles(NPs) formation under ambient conditions. Fourier-transform infrared spectroscopy(FT-IR) and transmission electron microscopy(TEM) confirmed the formation of NPs. Energy dispersive X-ray spectroscopy(EDX analysis) showed strong signals for zinc, iron, calcium and magnesium,with these materials being leached out. TEM analysis and high resolution transmission electron microscopy(HRTEM) showed semi-quasi spherical particles having average size of 10‐50 nm. Thus, a novel biomethodology was developed using fungal cell-free extract for bioleaching and subsequently nanoconversion of the waste materials into nanostructured form. These biosynthesized nanoparticles were tested for their efficacy on seed emergence activity of wheat(Triticum aestivum) seeds and showed enhanced growth at concentration of 20 ppm. These nanomaterials are expected to enhance plant growth properties and being targeted as additives in soil fertility and crop productivity enhancement.Ankita Bedi Braj Raj Singh Sunil K.Deshmukh Nisha Aggarwal Colin J.Barrow Alok Adholeya 2018Journal of Environmental Sciences2018,30,5:2
8Quasicrystal strengthened Mg-Zn-Y alloys by extrusion 显示文摘Alok Singh Nakamura M Watanabe M 2003Scripta Materialia2003,49,:1
9On the cubic W phase and its relationship to the icosahedral phase in Mg-Zn-Y alloys 显示文摘SINGH Alok TSAI A P 2003Scripta Materialia2003,49,2:1
10An artificial bee colony algorithm for the leaf-constrained minimum spanning tree problem显示文摘Alok Singh 2008Applied Soft Computing Journal2008,,2:1
11A review of neglected tropical diseases:filariasis显示文摘Filariasis is result of parasitic infection caused by three specific kinds of round worm.Lymphatic filariasis is found in under developed region of South America,Central Africa,pacific and Caribbian.It has been found for centuries,with main symptoms as elephant like swelling of the arms,legs and genitals.It is estimate that 120 millions peoples in the world have lymphatic filariasis.The spread of diseases and the challenge encountered in its management are discussed along with a review on drugs against filariasis in this article.Detail on clinical effect of drugs on the infection,safety profile,status in clinical practices and drug resistances are also covered.Anish Chandy Alok Singh Thakur Mukesh Pratap Singh Ashish Manigauha 2011Asian Pacific Journal of Tropical Medicine2011,4,7:1
12On the cubic W phase and its relationship to the icosahedral phase in Mg-Zn-Y alloys 显示文摘Singh Alok Tsai A!P 2003Scripta Materialia2003,49,:1
13Helical and tubular microstructures formed by polymerizable phosphatidylcholines 显示文摘Jacque H Georger Alok Singh Ronald R Price 1987J Am Chem Soc1987,109,:1
14Ultrafine Grain Formation in Mg-Zn Alloy by in situ Precipitation during High-Pressure Torsion显示文摘Fanqiang Meng Julian M. Rosalie Alok Singh Hidetoshi Somekawa Koichi Tsuchiya 2014Scripta Materialia2014,,:1
15Quasicrystal strengthened Mg-Zn-Y alloys by extrusion显示文摘Singh Alok Nakamura M Watanabe M 2003Scripta Materialia2003,49,9:1
16Physiological and biochemical adjustment of iron chlorosis affected low-chill peach cultivars supplied with different iron sources显示文摘Chakraborty Binayak Singh Pramod Narayan Shukla Alok 2012Physiology and Molecular Biology of Plants2012,,4:1
17Phosphatidyl-hydroxyalkanols as versatile intermediates in the synthesis of headgroup modified diacetylenic phospholipids 显示文摘Alok Singh Michael Markowitz Li-I Tsao 1992Synthesis Communications1992,22,16:1
18Petrographic characterization and evolution of the Karharbari coals, Talcher Coalfield, Orissa, India显示文摘Alok K. Singh 2016International Journal of Coal Science & Technology2016,3,2:1
19Scripta Materialia显示文摘Alok Singh 200349: 4172003,49,:1
20Formation of icosahedral-hexagonal H phase nano-composites in Mg-Zn-Y alloys 显示文摘Singh Alok Watanabe M Kato A 2004Scripta Materialia2004,51,:1
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