|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting:A Review显示文摘Visible-light-responsive ternary metal tungstate(MWO_4) photocatalysts are being increasingly investigated for energy conversion and environmental purification applications owing to their striking features, including low cost,eco-friendliness, and high stability under acidic and oxidative conditions. However, rapid recombination of photoinduced electron–hole pairs and a narrow light response range to the solar spectrum lead to low photocatalytic activity of MWO_4-based materials, thus significantly hampering their wide usage in practice. To enable their widespread practical usage, significant efforts have been devoted, by developing new concepts and innovative strategies. In this review, we aim to provide an integrated overview of the fundamentals and recent progress of MWO_4-based photocatalysts. Furthermore, different strategies, including morphological control, surface modification, heteroatom doping, and heterojunction fabrication, which are employed to promote the photocatalyticactivities of MWO_4-based materials, are systematically summarized and discussed. Finally, existing challenges and a future perspective are also provided to shed light on the development of highly efficient MWO_4-based photocatalysts. | Jun Ke M.Adnan Younis Yan Kong Hongru Zhou Jie Liu Lecheng Lei Yang Hou | 2018 | Nano-Micro Letters2018，10，4： | 8 |
| 2 | Magnetically treated water irrigation effect on turnip seed germination,seedling growth and enzymatic activities显示文摘Pre-sowing magnetic field seed treatment effects on biological characteristics of vegetables and crops have been studied well.However,studies reporting irrigation with magnetically treated water are scanty.Therefore,the effect of irrigation with magnetically treated water on turnip seed germination,seedling growth and enzymatic activities was evaluated.The tap water was treated at 211 mT for 30,45 and 60 min and used for irrigation of turnip seed and seedlings.Uniform and healthy turnip seed was sown under randomized complete block design(RCBD).The germination,emergence rate index,vigor index I and vigor index II increased up to 28.33%,11.54%,57.59%and 32.26%,respectively.The growth parameters such as seedling lengths,fresh&dry weights,chlorophyll content were also enhanced in response of irrigation with magnetically treated water.The seedlings irrigated with magnetically treated water showed 28.92%,11.36%and 14.76%higher protein content,alpha amylase and protease activities,respectively vs control.Results revealed that irrigation with magnetically treated water has potential to improve turnip germination,seedling growth and enzymatic activities and this study is also extendable to other vegetables and crops for the improvement of germination and growth. | Zia ul Haq Munawar Iqbal Yasir Jamil Hafeez Anwar Ayesha Younis Muhammad Arif M.Zeshan Fareed Fida Hussain | 2016 | Information Processing in Agriculture2016，3，2： | 5 |
| 3 | A Facile and Template-Free One-Pot Synthesis of Mn_3O_4 Nanostructures as Electrochemical Supercapacitors显示文摘In this paper, we report an effective, simple, and cost-effective strategy of electrochemical deposition to prepare hausmannite Mn_3O_4 thin films for the applications of supercapacitors. Various precursor concentrations and deposition durations were manipulated to tailor the surface morphologies of Mn_3O_4 nanostructures and to optimize their electrochemical performances. The Mn_3O_4 samples prepared at 0.05 M Mn(NO3)2solution for 30 min delivered a large gravimetric specific capacitance of 210 F g-1at a current density of 0.5 A g-1, and a good rate capability over other samples. This superior electrochemical performance may be attributed to the improved electrode conductivity with increased accessible area for electrolytes ions. Furthermore, a nanocomposite film based on Mn_3O_4/carbon foam was fabricated by utilizing the developed optimized conditions. The Mn_3O_4/carbon foam films exhibit an excellent specific capacitance with negligible degradation in retaining specific capacitance values up to 4000 cycles. These findings could further broaden the applications of hausmannite Mn_3O_4 in electrochemical energy storage electrodes. | Zhenjun Qi Adnan Younis Dewei Chu Sean Li | 2016 | Nano-Micro Letters2016，8，2： | 4 |
| 4 | Investigation of soliton solutions with different wave structures to the(2+1)-dimensional Heisenberg ferromagnetic spin chain equation显示文摘The principal objective of this article is to construct new and further exact soliton solutions of the(2+1)-dimensional Heisenberg ferromagnetic spin chain equation which investigates the nonlinear dynamics of magnets and explains their ordering in ferromagnetic materials.These solutions are exerted via the new extended FAN sub-equation method.We successfully obtain dark,bright,combined bright-dark,combined dark-singular,periodic,periodic singular,and elliptic wave solutions to this equation which are interesting classes of nonlinear excitation presenting spin dynamics in classical and semi-classical continuum Heisenberg systems.3D figures are illustrated under an appropriate selection of parameters.The applied technique is suitable to be used in gaining the exact solutions of most nonlinear partial/fractional differential equations which appear in complex phenomena. | M S Osman K U Tariq Ahmet Bekir A Elmoasry Nasser S Elazab M Younis Mahmoud Abdel-Aty | 2020 | Communications in Theoretical Physics2020，72，3： | 4 |
| 5 | Silver modified Cu/SiO2 catalyst for the hydrogenation of methyl acetate to ethanol显示文摘A series of silver modified Cu/SiO2 catalysts were synthesized with ammonia-evaporation method and applied in vapor-phase hydrogenation of methyl acetate to ethanol.The influence of additive‘Ag’on the structural evolution of catalyst was systematically studied by several characterization techniques,such as N2 adsorption–desorption,N2O titration,PXRD,FTIR,in-situ FTIR,H2-TPR,H2-TPD,XPS and TEM.Results showed that incorporation of a small amount of Ag could enhance the structural stability,and the strong interaction between Cu and Ag species was conducive to increase the dispersion of copper species and create a suitable Cu+/(Cu0+Cu+)ratio,which was proposed to be responsible for the improved catalytic activity.The maximum conversion of MA(94.1%)and selectivity of ethanol(91.3%)over optimized Cu-0.5 Ag/SiO2 and 120 h on stream without deactivation under optimal conditions demonstrates its excellent stability. | Zhiheng Ren Muhammad Naeem Younis Hui Zhao Chunshan Li Xiangui Yang Erqiang Wang Gongying Wang | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 4 |
| 6 | 角区三维分离流附着鞍点拓扑结构及其演化显示文摘实验研究角区层流边界层三维定常分离附着鞍点拓扑结构的存在性及其演化规律.二维粒子图像测速(PIV,Particle Image Velocimetry)激光片光源设置于给定平板和不同模型组成的角区对称面,采用微距镜头捕捉对称面奇点附近的局部流动拓扑结构.实验证实在一定流动参数条件下多种形状模型与平板形成的角区均存在有别于经典分离的附着鞍点拓扑结构;随着雷诺数增加或者随着模型钝度的变化,附着鞍点拓扑结构与经典分离鞍点拓扑结构之间存在着一定的演化规律;对附着鞍点拓扑结构与Lighthill经典三维分离模式的关系进行了分析,表明Lighthill经典三维分离模式也适用于分析附着鞍点拓扑结构. | 张华 胡波 Muhammad Yamin Younis 王宏 | 2012 | 北京航空航天大学学报2012，38，7： | 4 |
| 7 | Water-induced softening behavior of clay-rich sandstone in Lanzhou Water Supply Project,China显示文摘The strength of clay-rich sandstone decreases significantly when in contact with water due to softening effects.This scenario can pose a severe threat to the stability of water diversion tunnels during construction and operation periods.To address the issues related to water-induced softening in clay-rich sandstone zones in a water diversion tunnel of Lanzhou Water Supply Project,the microscopic and micromechanical variations of rocks due to increasing water content in two different zones i.e.zones A and B,were determined by various testing methods,such as X-ray diffraction(XRD),scanning electron microscopy(SEM),thin section microscopy,micro-indentation test,sonic velocity test,and slake durability test.The microscopic analysis confirms the presence of montmorillonite mineral which is the dominant problematic geomaterial in engineering application.The integrity and durability of clay-rich sandstone were determined with sonic velocity and slake durability tests to calibrate the results obtained by the micro-indentation test.It shows that the elastic modulus and hardness of clay-rich sandstone decrease with the increase of saturation time,up to 144 h,which is more significant and rapid during early stage of saturation.After 144 h of saturation,the elastic modulus decreases by 89% and 97%,and the hardness decreases by 89% and 99% for zones A and B sandstones,respectively.The results of slake durability and sonic velocity indicate that zone A sandsto ne remains 56.19% durability after 144 h of saturation,while zone B sandstone loses its durability merely after 72 h of saturation.The clay-rich sandstone starts to dissolve in water when the saturation time exceeds 144 h.The significant decreases in strength and durability of clay-rich sandstone due to water-induced softening are serious threats to tunnel stability.The improvements in the strength of surrounding rock mass by grouting and permeability by installation of drainage galleries can reduce the damage caused by water-induced softening. | Muhammad Usman Azhar Hui Zhou Fanjie Yang Adnan Younis Xinjing Lu Houguo Fang Yijun Geng | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，3： | 3 |
| 8 | Controlled fabrication of Pr(OH)_3 nanowires for enhanced photocatalytic activities显示文摘In this report, praseodymium hydroxide Pr(OH)_3 nanowires with different aspect ratios (length to diameter ratios) were synthesized by a facile hydrothermal approach. The variations in alkali concentration during synthesis are found to form different aspect ratios of nanowires. The X-ray diffraction and Raman spectroscopy analysis demonstrate the absence of any impurity phases in as-prepared materials.Subsequently, photocatalytic activities of as-prepared nano wires were evaluated by the degradation of methyl orange (MO). Our findings reveal that the nanowires with larger aspect ratios have higher photocatalytic efficiency than the smaller aspect ratio samples. X-ray photospectroscopy investigations reveal that the samples with higher aspect ratio are found to exhibit more oxygen vacancies as compared to lower aspect ratio samples. The enhanced photocatalytic activities can be attributed to the presence of higher percentage of active crystal facet (100), higher concentration of defects densities and narrower band gap. Thus, Pr(OH)_3 nanowires can be considered as a potential candidate for the application of wastewater treatment and related technologies. | Nan Chen Adnan Younis Dewei Chu Sean Li | 2019 | Journal of Rare Earths2019，37，1： | 3 |
| 9 | Optical spin-symmetry breaking for high-efficiency directional helicity-multiplexed metaholograms显示文摘Helicity-multiplexed metasurfaces based on symmetric spin–orbit interactions (SOIs) have practical limits because they cannot provide central-symmetric holographic imaging. Asymmetric SOIs can effectively address such limitations, with several exciting applications in various fields ranging from asymmetric data inscription in communications to dual side displays in smart mobile devices. Low-loss dielectric materials provide an excellent platform for realizing such exotic phenomena efficiently. In this paper, we demonstrate an asymmetric SOI-dependent transmission-type metasurface in the visible domain using hydrogenated amorphous silicon (a-Si:H) nanoresonators. The proposed design approach is equipped with an additional degree of freedom in designing bi-directional helicity-multiplexed metasurfaces by breaking the conventional limit imposed by the symmetric SOI in half employment of metasurfaces for one circular handedness. Two on-axis, distinct wavefronts are produced with high transmission efficiencies, demonstrating the concept of asymmetric wavefront generation in two antiparallel directions. Additionally, the CMOS compatibility of a-Si:H makes it a cost-effective alternative to gallium nitride (GaN) and titanium dioxide (TiO2) for visible light. The cost-effective fabrication and simplicity of the proposed design technique provide an excellent candidate for high-efficiency, multifunctional, and chip-integrated demonstration of various phenomena. | Muhammad Ashar Naveed Muhammad Afnan Ansari Inki Kim Trevon Badloe Joohoon Kim Dong Kyo Oh Kashif Riaz Tauseef Tauqeer Usman Younis Murtaza Saleem Muhammad Sabieh Anwar Muhammad Zubair Muhammad Qasim Mehmood Junsuk Rho | 2021 | Microsystems & Nanoengineering2021，7，2： | 3 |
| 10 | Au modified ZnO nanowires for ethanol gas sensing显示文摘We demonstrated the application of sensors for ethanol gas detection.The ZnO nanowires based sensors with interdigital electrodes were fabricated,and a platform was constructed to test the properties of the sensors.To acquire better response and shorter response/recovery time,the ZnO nanowires were modified with Au.The ethanol gas sensing performance of the pure sensors and those modified with Au nanoparticles were investigated for comparison,and the optimal test temperature of 350℃ was obtained.We found that the response/recovery time for the modified sensor towards 500 ppm of the ethanol gas was reduced by 1.35 and1.42 times compared with the pure sensors,and the sensitivities towards 500 and 10 ppm of the ethanol gas were also increased by 3.18 and 1.35 times,respectively.These proved the enhancement of the Au nanoparticles in the ZnO nanowires based sensors for ethanol gas sensing. | WU YouNi JIANG Ting SHI TieLin SUN Bo TANG ZiRong LIAO GuangLan | 2017 | Science China(Technological Sciences)2017，60，1： | 2 |
| 11 | 尺骨撞击综合征的MRI表现显示文摘目的:回顾性分析39例尺骨撞击综合征患者的MRI表现,以提高对尺骨撞击综合征患者腕部损伤的影像认知,降低患者月骨和/或三角骨坏死的发生。方法采用Gelberman等的平行线法,对39例尺骨撞击综合征患者腕部MRI图像进行测量及分析。结果尺骨阳性变异29例(74.4%),变异范围为2~4.26 mm,尺骨阴性变异8例(20.5%),变异范围为0.75~1.77 mm,尺骨中性变异2例。其中月骨损伤28例,三角骨损伤11例,三角纤维软骨盘损伤38例。MRI显示损伤主要位于月骨尺侧部和三角骨腰部,且除1例之外,其余患者均伴有三角纤维软骨的损伤。结论 MRI可早期发现尺骨撞击综合征月骨、三角骨损伤的改变,并且对于仅有三角纤维软骨盘损伤者,如果伴有临床症状或相应的临床病史,要高度怀疑尺骨撞击综合征,以提高该病的诊断率及降低月骨和/或三角骨坏死的发生率。 | Remaan Younis Mohiuddin 何如 汪益 金志高 宦坚 | 2015 | 中国血液流变学杂志2015，0，4： | 2 |
| 12 | Histopathological alterations in the liver and intestine of Nile tilapia Oreochromis niloticus exposed to long-term sublethal concentrations of cadmium chloride显示文摘Fingerlings of Nile tilapia Oreochromis niloticus were exposed to 1.68, 3.36, and 5.04 mg/L cadmium(as CdCl2), which represent 10%, 20%, and 30% of their previously determined 96-h LC5 0. After exposure for 20 days, sections of the liver and intestine of treated fish were examined histologically. Histopathological changes varied from slight to severe structural modification, depending on the exposure concentration. The hepatic tissues of fish exposed to 10% LC 50 showed markedly increased vacuolation of the hepatocytes and coarse granulation of their cytoplasm. Abundant erythrocytic infiltration among the hepatocytes was observed in fish exposed to 20% LC5 0. In the intestinal tissues of fish exposed to all doses, goblet cells proliferated and were greatly increased in size, the longitudinal muscularis mucosa was disturbed and, in the crypts of the sub-mucosal layer, apoptosis increased, indicated by large numbers of degenerated nuclei. Large numbers of inflammatory cells and dilated blood vessels were observed in the intestine of the group treated with 30% LC5 0. | YOUNIS Elsayed ABDEL-WARITH Abdel-Wahab AL-ASGAH Nasser EBAID Hossam | 2015 | Chinese Journal of Oceanology and Limnology2015，33，4： | 2 |
| 13 | Gastrointestinal motility studies as a guide to postoperative management显示文摘 | Nachlas MM Younis MT Roda CP | 1972 | Ann Surg1972，175，： | 2 |
| 14 | Heed: a hybrid, energy-efficient, distributed clustering approach for ad-hoc sensor networks 显示文摘 | YOUNIS O FAHMY S | 2004 | IEEE Trans on-Mobile Computing2004，3，4： | 1 |
| 15 | HEED:A hybrid energy-efficient distributed clustering approach for ad hoc sensor networks显示文摘 | Younis O Fahmy S | 2004 | IEEE Trans on Mobile Computing2004，3，4： | 1 |
| 16 | Sink repositioning for enhanced performance in wireless sensor networks 显示文摘 | Akkaya K Younis M Meenakshi B | 2005 | Computer Networks Journal2005，49，4： | 1 |
| 17 | Evaluation of bone healing following immediate and delayed dental implant placement显示文摘 | Younis L Taher A Abu - Hassan MI Tin O | 2009 | J Contemp Dent Pract2009，10，4： | 1 |
| 18 | HEED: a hybrid energy-efficient distributed clustering approach for Ad hoc sensor networks显示文摘 | YOUNIS O FAHMY S | 2004 | IEEE Trans on Mobile Computing2004，3，4： | 1 |
| 19 | Survivin and COX-2 expression in male breast carvinoma显示文摘 | Younis T Hache KD Rayson D | 2009 | Breast2009，18，4： | 1 |
| 20 | Carrier frequency offset estimation for OFDM systems over mobile radio channels显示文摘 | AI-Dweik A Hazmi A Younis S | 2010 | IEEE Transactions on Vehicular Technology2010，59，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员