|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | An evaluation of the emission profile for two-wheelers at a traffic junction显示文摘Two-wheeler vehicles are an important mode of transportation in developing countries.However,the emissions from two-wheeler vehicles are significant.Urban two-wheeler vehicles with gasoline-fueled engines produce NO,and particulate matter emissions that affect urban air quality.During traffic light stops and programmed stops,for instance,pollutants are emitted and are dangerous to human health.In this experimental study,two-wheeler vehicles with different makes,technologies and engine capacities were tested for exhaust emissions including gravimetric and online measurements at different engine speeds and a no load condition at a si mutated traffic junction.Gravimetric measurements were performed by collecting the particulate mass(at two engine speeds:1500 and 2500 rpm) from a diluted engine-out exhaust on quartz filter paper.Next,these collected particulates were used to determine the presence of metals,as well as the benzene soluble organic fraction(BSOF).The total particulate mass,BSOF and trace elements were slightly higher at a higher engine speed(2500 rpm).Online measurements were performed by sampling the engine exhaust(at four engine speeds:1500.2000,2500,and 3000 rpm)and using online instruments to determine the particle number and size distribution,the particle-bound polyaromatic hydrocarbons(PAHs),the gaseous emissions and the smoke opacity.Engines with higher cubic capacity emitted a higher concentration of nano-particles.The particle-bound PAH concentration increased as the engine speed increased,but this concentration was notably low for the highest engine speed tested(3000 rpm).The regulated gaseous emissions increased as the engine speed increased for all vehicles. | Avinash Kumar Agarwal Prakhar Bothra Tarun Gupta Pravesh Chandra Shukla | 2015 | Particuology2015，13，1： | 4 |
| 2 | Emission profiling of diesel and gasoline cars at a city traffic junction显示文摘In congested urban roads,cars must stop at intersections because of city traffic lights.As a result,pedestrians and traffic police personnel are exposed to pollutants emanating from the tailpipe of various vehicles at such city traffic junctions.In this study,various gasoline- and diesel-fueled cars complying with different emission standards were tested for their emissions in simulated city traffic junction conditions.The engine exhaust from these cars was subjected to physicochemical characterization at different engine speeds under no-load conditions.These engine conditions were chosen because the cars idle at different engine speeds at a city traffic junction.Gravimetric and real-time measurements were performed for the tailpipe exhaust sampled from these vehicles.Exhaust particles were collected on 47 mm diameter quartz filter papers and subjected to gravimetric analysis for determining the total particulate mass(TPM)and trace metals while the engines were operated at two different engine idling speeds,1500 rpm(representing low idling) and 2500 rpm(representing high idling).At similar engine operating conditions,TPM and trace metals were lower for the exhaust from gasoline engines compared to the exhaust from diesel engines.Real-time measurements were performed for particle-bound poly-aromatic hydrocarbons(PAHs),particle number and size distribution,regulated gaseous emissions and smoke opacity of the exhaust at four different engine speeds,1500,2000,2500,and 3000 rpm.Particle-bound PAHs showed a decreasing trend for the vehicles that complied with stricter vehicular emission standards.Higher particle peak number concentrations were observed for diesel exhausts compared to the results for gasoline exhaust.Regulated gaseous emissions were also compared. | Avinash Kumar Agarwal Tarun Gupta Prakhar Bothra Pravesh Chandra Shukla | 2015 | Particuology2015，13，1： | 4 |
| 3 | Leidenfrost drops on micro/nanostructured surfaces显示文摘处于 Leidenfrost 状态,液体落下被从落下经由蒸发产生的蒸汽层在热稳固的表面上面升在空中。蒸汽层热地绝缘从加热表面的落下,在无数重要工程应用引起败坏的热转移。因此,压制 Leidenfrost 效果并且提高 Leidenfrost 温度是高度合乎需要的。这份报纸在 Leidenfrost 温度的改进上与一个重音在 micro/nanostructured 表面上有关 Leidenfrost 落下论述最近的文学的全面评论。Leidenfrost 效果的基本物理过程和 Leidenfrost 落下的关键特征首先被介绍。然后, Leidenfrost 温度上的各种各样的 micro/nanoscale 表面结构的影响的主要调查结果详细被介绍,并且为各特定的表面拓扑学的内在的改进机制也被讨论。多尺度的层次表面保持最好的诺言显著地由联合两个的优点增加 Leidenfrost 温度,这被结束微 -- 并且 nanoscale 结构。 | Vishal TALARI Prakhar BEHAR Yi LU Evan HARYADI Dong LIU | 2018 | Frontiers in Energy2018，12，1： | 2 |
| 4 | Comparison between intranasal dexmedetomidine and intranasal ketamine as premedication for procedural sedation in children undergoing MRI: a double-blind, randomized, placebo-controlled trial显示文摘 | Prakhar Gyanesh Rudrashish Haldar Divya Srivastava Prashant Mohan Agrawal Akhilesh Kumar Tiwari P. K. Singh | 2014 | Journal of Anesthesia2014，，1： | 1 |
| 5 | VEGF: A critical driver fbr angiogenesis and sub- sequent tumor growth: An IHC study显示文摘 | Prakhar K RS D | 2012 | J Oral Maxillofac Pathol2012，16，3： | 1 |
| 6 | Application of homogeneous and heterogeneous cation-exchange from water treatment plant residuals using Donnan membrane process显示文摘 | Prakhar Prakash David Hoskins Arup K Sengupta | 2004 | J Membrane Science2004，237，： | 1 |
| 7 | Application of homogeneous and heterogeneous cation-exchange from water treatment plant residuals using Donnan membrane process显示文摘 | Prakash Prakhar Hoskins David Sengupta Arup K | 2004 | Membrane Science2004，237，： | 1 |
| 8 | Application of homogeneous and heterogeneous cation-exchange from water treatment plant residuals using donnan membrane process显示文摘 | Prakash Prakhar Hoskins David Sengupta Arup K | 2004 | Membrane Science2004，237，： | 1 |
| 9 | Application of homogeneous and heterogeneous cation-exchange from water treatment plant residuals using Donnan membrane process显示文摘 | Prakash Prakhar Hoskins David Sengupta Arup K | 2004 | Membrane Science2004，237，： | 1 |
| 10 | The homeostatic γc cytokines IL-7 and IL-15 suppress the induction of CD4^(+) CD8αα^(+) intraepithelial T cells in the gut显示文摘All T cells require cytokine signaling for their development and maintenance, and CD8αα^(+) IEL T cells are noted for their requirement for IL-15 [8]. This IL-15 dependency was demonstrated by the paucity of CD8αα^(+) T cells among SI IELs in Il15–/– mice (Fig. 1d and Fig. S1a). However, the cytokine requirements of CD8αα^(+)CD4^(+) T cells are currently unclear. Because of the shared phenotype of CD8αα expression with CD8αα^(+) IELs, we postulated that CD4^(+)CD8αα^(+) IELs would also depend on IL-15. | Can Li Praveen Prakhar Jung-Hyun Park | 2022 | Cellular & Molecular Immunology2022，19，6： | 0 |
| 11 | Blockchain Based Secure Solution for Cloud Storage:A Model for Synchronizing Industry 4.0 and IIoT显示文摘Industry 4.0 is one of the hot topic of today’s world where everything in the industry will be data driven and technological advancements will take place accordingly.In the fourth phase of industrial revolution,manufacturers are dependent upon data produced by the consumers to invent,innovate or change anything for the product.Internet of things devices like OBD,RFID,IIoT,Smart devices are the major source of data generation and represents trends in the industry.Since the IoT device are vulnerable to hackers due to its limitation,consumer data security should be tighten up and enhanced.This paper gives an overview of industrial revolutions as well as proposes Blockchain Cloud Computing as a solution to store data for Industry 4.0. | Prakhar Sahu S.K.Singh Arun Kumar Singh | 2021 | Journal of Cyber Security2021，3，2： | 0 |
| 12 | 扩展频谱保证了无线通信的安全显示文摘无线通信起源于1915年,当时出现了跨越美国大陆的第一次无线语音传输,之后得到快速发展,1920年出现了首个商业无线电广播,1921年第一次使用警车无线调度,而1935年则实现了第一个全球性电话呼叫。无线技术的商业化带采了全球性的无线电大爆炸,但早期由于缺乏对频段的使用限制,无线电频道嘈杂不堪,流量亦无法管理。 | Rahul Garg Prakhar Goyal | 2013 | EDN CHINA 电子技术设计2013，，5： | 0 |
| 13 | IoT-Based Women Safety Gadgets (WSG): Vision, Architecture, and Design Trends显示文摘In recent years,the growth of female employees in the commercial market and industries has increased.As a result,some people think travelling to distant and isolated locations during odd hours generates new threats to women’s safety.The exponential increase in assaults and attacks on women,on the other hand,is posing a threat to women’s growth,development,and security.At the time of the attack,it appears the women were immobilized and needed immediate support.Only self-defense isn’t sufficient against abuse;a new technological solution is desired and can be used as quickly as hitting a switch or button.The proposed Women Safety Gadget(WSG)aims to design a wearable safety device model based on Internet-of-Things(IoT)and Cloud Technology.It is designed in three layers,namely layer-1,having an android app;layer-2,with messaging and location tracking system;and layer-3,which updates information in the cloud database.WSG can detect an unsafe condition by the pressure sensor of the finger on the artificial nail,consequently diffuses a pepper spray,and automatically notifies the saved closest contacts and police station through messaging and location settings.WSG has a response time of 1000 ms once the nail is pressed;the average time for pulse rate measure is 0.475 s,and diffusing the pepper spray is 0.2–0.5 s.The average activation time is 2.079 s. | Sharad Saxena Shailendra Mishra Mohammed Baljon Shamiksha Mishra Sunil Kumar Sharma Prakhar Goel Shubham Gupta Vinay Kishore | 2023 | Computers, Materials & Continua2023，，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员