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| 1 | Solving SAT problem by heuristic polarity decision-making algorithm显示文摘This paper presents a heuristic polarity decision-making algorithm for solving Boolean satisfiability (SAT). The algorithm inherits many features of the current state-of-the-art SAT solvers, such as fast BCP, clause recording, restarts, etc. In addition, a preconditioning step that calculates the polarities of variables according to the cover distribution of Karnaugh map is introduced into DPLL procedure, which greatly reduces the number of conflicts in the search process. The proposed approach is implemented as a SAT solver named DiffSat. Experiments show that DiffSat can solve many 'real-life' instances in a reasonable time while the best existing SAT solvers, such as Zchaff and MiniSat, cannot. In particular, DiffSat can solve every instance of Bart benchmark suite in less than 0.03 s while Zchaff and MiniSat fail under a 900 s time limit. Furthermore, DiffSat even outperforms the outstanding incomplete algorithm DLM in some instances. | JING MingE ZHOU Dian TANG PuShan ZHOU XiaoFang ZHANG Hua | 2007 | Science in China(Series F)2007，50，6： | 3 |
| 2 | Size-induced diffuse phase transition in the nanocrystalline ferroelectric PbTiO3显示文摘 | Chattopadhyay Soma Ayyub Pushan Palker | 1995 | Phys Rev B1995，52，13： | 1 |
| 3 | Size-induced structural transitions in the Cu-O and Ce-O systems显示文摘 | Palkar V R Pushan Ayyub Soma Chattopadhyay | 1996 | Phys Rev B1996，53，： | 1 |
| 4 | Synthesis and characterization of a novel photocrosslinkable fluorinated poly(arylene ether) for optical waveguide显示文摘 | Tie Weiwei Zhong Zhenxin Wen Pushan | 2009 | Materials Letters2009，63，： | 1 |
| 5 | Size-induced structural phase transitions and hyperfine properties of microcrystalline Fe2O3 显示文摘 | Pushan Ayyub Manu Multani Mustansir Barma | 1988 | J Phys C: Solid State Phys1988，21，： | 1 |
| 6 | Synthesis of Fe/TiO2 photocatalyst with nanometer size by solv othermal method and the effect of H2O addition on structural stability and photodecomposition of methanol显示文摘 | Manjari Lar Vishol Chhabin Pushan Ayynb | 1998 | J Mater Res1998，13，5： | 1 |
| 7 | Kinetics and mechanistic study of n-alkane hydroisomerization reaction on Pt-doped g-alumina catalyst显示文摘The catalysts g-alumina(GA,the reference catalyst)and Pt doped g-alumina(PGA-s)were synthesized using a simple sol-gel technique,in which at first preparation of porous base(GA),then impregnation of platinum salt over the base and finally reduction of platinum in the surface of the support were done.These catalysts prepared in different mole ratios of Pt:Al as 2:1,1:1 and 1:2 are named as PGA-1,PGA-2 and PGA-3 respectively.The isomerization of n-alkanes(n-hexane,nheptane and n-octane)were investigated over the synthesized catalysts.The 2-methyl pentane(2-MP),2,2-dimethyl pentane(2,2-DMP)and 2,3-dimethyl hexane(2,3-DMH)are the major products of respective isomerization of n-hexane,n-heptane and n-octane,besides a small amount of other branched isomers are also produced.The product distribution is comparable to that reported for Pt based other catalysts.The optimal mole ratios of Pt:Al is 1:1(PGA-2)gives quite good catalytic activity for isomerization of n-alkane.Even through in reusability study,PGA-2 gives better performance than others.We have mainly focused on kinetic study,reaction mechanism behind isomerization and calculated the order of reactions and activation energies of the isomerization reactions in the present work. | Abhishek Dhar Rohit L.Vekariya Pushan Sharma | 2017 | Petroleum2017，3，4： | 1 |
| 8 | The effect of WTO on the extensive and the intensive margins of trade显示文摘 | Pushan Dutt Ilian Mihov Timothy Van Zandt | 2013 | Journal of International Economics2013，，2： | 1 |
| 9 | Structural and optoelectronic properties of vacuum evaporated SnS thin films annealed in argon ambient显示文摘 | Biswajit Ghosh Rupanjali Bhattacharjee Pushan Banerjee Subrata Das | 2010 | Applied Surface Science2010，，8： | 1 |
| 10 | The Effect of WTO on the Ex- tensive and the Intensive Margins of Trade 显示文摘 | Pushan Dutt Ilian Mihov | 2013 | Journal of International Economics2013，91，2： | 1 |
| 11 | Speciation of As, Cr, Se and Hg under coal fired power station conditions显示文摘 | Pushan Shah Vladimir Strezov Kathryn Prince | 2008 | Fuel2008，87，12： | 1 |
| 12 | Speciation of As, Cr, Se and Hg under coal fired power station conditions显示文摘 | Pushan S Vladimir S Kathryn P | 2008 | Fuel2008，87，1011： | 1 |
| 13 | Influence of the Sputtering Gas on the Preferred Orientation of Nanocrystalline Titanium Nitride Thin Films显示文摘 | Rajarshi Banerjee Ramesh Chandra Pushan Ayyub | 2002 | Thin Solid Films2002，405，： | 1 |
| 14 | Speciation of As, Cr, Se and Hg under coal fired power station conditions显示文摘 | Pushan Shah Vladimir Strezov Kathryn Prince Peter F. Nelson | 2007 | Fuel2007，，10： | 1 |
| 15 | Endogenous Trade Policy Through Majorie Yoting显示文摘 | Dutt Pushan Devashish Mitra | | 0，，01： | 1 |
| 16 | Influence of laser surface remelting on microstructure and degradation mechanism in simulated body fluid of Zn-0.5Zr alloy显示文摘In this study,the Zn-0.5 wt%Zr(Zn-Zr)alloy was treated by laser surface remelting(LSR),and then the microstructure and degradation mechanism of the remelting layer were investigated and compared with the original as-cast alloy.The results reveal that after LSR,the bulky Zn(22)Zr phase in the original Zn-Zr alloy is dissolved and the coarse equiaxed grains transform into fine dendrites with a secondary dendrite arm space of about 100 nm.During the degradation process in simulated body fluid(SBF),the corrosion products usually concentrate at some certain areas in the original alloy,while the corrosion products distribute uniformly and loosely in the LSR-treated surface.After removing the corrosion products,it was found that the former suffers obvious pitting corrosion and then localized corrosion.The proposed mechanism is that corrosion initiates at grain boundaries and develops into the depth at some locations,and then leads to localized corrosion.For the LSR-treated sample,corrosion initiates at some active sites and propagates in all directions,corrosion takes place in the whole surface with distinctly uniform thickness reduction,while the localized corrosion and peeling of bulky Zn(22)Zr particles were eliminated.The electrochemical results also suggest the uniform corrosion of LSR-treated sample and localized corrosion of original sample.Based on the results,a new approach to regulate the corrosion mode of the biodegradable Zn alloy is proposed. | Zheng Wang Qingke Zhang Robabeh Bagheri Pushan Guo Yirong Yao Lijing Yang Zhenlun Song | 2019 | Journal of Materials Science & Technology2019，35，11： | 1 |
| 17 | Preparation and Characterization of Ultrafine TiO2 Particles in Reverse Micelles by Hydrolysis of Titanium Di-ethylhexylsul Fosuccinate显示文摘 | MANJARI L VISHAL C PUSHAN A | | 0，，05： | 1 |
| 18 | Fabrication of SnS Thin Films by the Successive Ionic Layer Adsorption and Reaction (SILAR) Method 显示文摘 | Biswajit Ghosh Madhumita Das Pushan Banerjee | 2008 | Semicon- ductor Science and Technology2008，23，12： | 1 |
| 19 | Speciation of As, Cr, Se and Hg under coal fired power station conditions显示文摘 | Pushan Shah Vladimir Strezov Kathryn Prince Peter F. Nelson | 2007 | Fuel2007，，10： | 1 |
| 20 | A critical review of the emerging research on the detection and assessment of microplastics pollution in the coastal,marine,and urban Bangladesh显示文摘The research on the extent and effects of microplastics pollution in the Global South is only getting started.Bangladesh is a South Asian country with one of the fastest growing economies in the world,however,such exponential economic growth has also increased the pollution threats to its natural and urban environment.In this paper,we reviewed the recent primary research on the assessment of the extent of microplastics pollution in Bangladesh.Fromthe online databases,we developed a compilation of emergingresearch articles that detected and quantified microplastics in different coastal,marine,and urban environments in Bangladesh.Most of the studies focused on the coastal environment(e.g.,beach sediment)and marine fish,while limited data were available for the urban environment.We also discussed the relationship of the type of anthropogenic activities with the observed microplastic pollution.The Cox's Bazar sea beach in south-east Bangladesh experienced microplastics pollution due to tourism activities,while fishing and other anthropogenic activities led to microplastics pollution in the Bay of Bengal.While microplastics larger than 1 mm were prevalent in the beach sediments,smaller microplastics with size below 0.5 mm were prevalent in marine fish samples.Moreover,the differences m microplastic abundance,size,shape,color,and polymer type found were depended on the sampling sites and relevant anthropogenic activities.It is imperative to identify majorsources of microplastics pollution in both natural and urban environment,determine potential environmental and human health effects,and develop mitigating and prevention strategies for reducing microplastics pollution. | Zaki Alam Pushan Ehsanur Rahman Nafisa Islam Nirupam Aich | 2022 | Frontiers of Environmental Science & Engineering2022，16，10： | 0 |
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