维普中文期刊产品整合服务
31篇 您的检索式:作者名="Muhammad SU"
    题名 作者 年代 出处 被引量
1Photopolymerization-based additive manufacturing of ceramics:A systematic review显示文摘Conversion of inorganic-organic frameworks (ceramic precursors and ceramic-polymer mixtures) into solid mass ceramic structures based on photopolymerization process is currently receiving plentiful attention in the field of additive manufacturing (3D printing).Various techniques(e.g.,stereolithography,digital light processing,and two-photon polymerization) that are compatible with this strategy have so far been widely investigated.This is due to their cost-viability,flexibility,and ability to design and manufacture complex geometric structures.Different platforms related to these techniques have been developed too,in order to meet up with modem technology demand.Most relevant to this review are the challenges faced by the researchers in using these 3D printing techniques for the fabrication of ceramic structures.These challenges often range from shape shrinkage,mass loss,poor densification,cracking,weak mechanical performance to undesirable surface roughness of the final ceramic structures.This is due to the brittle nature of ceramic materials.Based on the summary and discussion on the current progress of material-technique correlation available,here we show the significance of material composition and printing processes in addressing these challenges.The use of appropriate solid loading,solvent,and preceramic polymers in forming slurries is suggested as steps in the right direction.Techniques are indicated as another factor playing vital roles and their selection and development are suggested as plausible ways to remove these barriers.Sefiu Abolaji RASAKI Dingyu XIONG Shufeng XIONG Fang SU Muhammad IDREES Zhangwei CHEN 2021Journal of Advanced Ceramics2021,10,3:8
2Effects of dietary forage to concentrate ratio and wildrye length on nutrient intake, digestibility, plasma metabolites, ruminal fermentation and fecal microflora of male Chinese Holstein calves显示文摘Twenty-eight male, weaned Chinese Holstein calves((156.8±33.4) kg) were used to investigate the effects of dietary forage to concentrate ratio(F:C) and forage length on nutrient digestibility, plasma metabolites, ruminal fermentation, and fecal microflora. Animals were randomly allocated to four treatments in a 2×2 factorial arrangement: whole-length forage(WL) with low F:C(50:50); WL with high F:C(65:35); short-length forage(SL) with high F:C(65:35); and SL with low F:C(50:50). Chinese wildrye was used as the only forage source in this trial. The grass in the SL treatments was chopped using a chaff cutter to achieve small particle size(~50% particles >19 mm). Dry matter intake(DMI) and organic matter(OM) intake was increased by increasing both F:C(P<0.01) and forage length(FL)(P<0.05), while acid detergent fiber(ADF) and neutral detergent fiber(NDF) intakes were only increased by increasing the F:C(P<0.01). The digestibility of NDF was increased as the FL increased(P<0.01), and it was also affected by interaction between F:C and FL(P<0.05). Cholesterol(CHO)(P<0.01), leptin(LP)(P<0.05), and growth hormone(GH)(P<0.01) concentrations in plasma were increased as dietary F:C increased. A significant increase in plasma triglyceride(TG)(P<0.01), insulin(INS)(P<0.05), and GH(P<0.01) levels was observed with decreasing dietary FL. Ruminal p H values of calves fed with low F:C diets were significantly lower than those in high F:C treatment(P<0.05). Increasing the F:C enhanced ruminal acetic acid(P<0.05) and acetic acid/propionic acid(P<0.01). Fecal Lactobacillus content was significantly higher, while Escherichia coli and Salmonella contents were significantly lower in WL and high F:C groups(P<0.05). Lower fecal scores(higher diarrhea rate) were observed in calves fed with SL hay compared to WL hay(P<0.05). Denatured gradient gel electrophoresis(DGGE) bands and richness index(S) were significantly affected by the interaction between F:C and FL(P<0.05), under high F:C, band numbers and richness index from WL group were higher than that from SL group(P<0.05), whereas there were no differences between WL andSL groups under low F:C(P>0.05). Microflora similarity was 50–73% among the different treatments. It is concluded that the WL with high F:C(65:35) diet is suitable for weaned calves.XIA Chuan-qi Aziz-Ur-Rahman Muhammad NIU Wen-jing SHAO Tao-qi QIU Qing-hua SU Hua-wei CAO Bing-hai 2018Journal of Integrative Agriculture2018,17,2:7
3Roles of furfural during the thermal treatment of bio-oil at low temperatures显示文摘The reactive O-containing species in bio-oil could induce the polymerization of bio-oil during its thermal treatment, which affects the relevant utilization of bio-oil significantly. Furans, as the highly reactive Ocontaining species in bio-oil, play important roles during the thermal treatment of bio-oil. In this study,furfural was chosen as the representative of the furans in bio-oil to investigate its roles during the thermal treatment of bio-oil. The raw bio-oil with and without the addition of extra furfural(10 wt% of bio-oil) and pure furfural were pyrolyzed in a fixed-bed reactor at 200–500 ℃. The results show that the interactions among furfural and bio-oil components can take place prior to the evaporation of furfural(<140 ℃) to form the intermediates, then these intermediates could be further polymerized to form large molecular compounds, and coke can be formed via the interactions at temperatures ≥ 300 ℃. At temperatures ≤ 300 ℃, furfural mainly interacts with anhydrosugars. As the temperature further increases, the aromatics are involved in the interactions to form coke. The increased percentage of the coke formed via the interactions is in a linear relation with the conversion of furfural during the pyrolysis at 300–500 ℃(no coke formed at 200 ℃). Meanwhile, more non-aromatic light components(≤ C6) and less aromatics in the tars could be formed due to the interactions.Zhe Xiong Yuanjing Chen Muhammad Mufti Azis Xun Hu Wei Deng Hengda Han Long Jiang Sheng Su Song Hu Yi Wang Jun Xiang 2020Journal of Energy Chemistry2020,29,11:2
4High-efficiency ultra-thin Cu_(2)ZnSnS_(4) solar cells by double-pressure sputtering with spark plasma sintered quaternary target显示文摘In recent years,Cu_(2)ZnSnS_(4)(CZTS)semiconductor materials have received intensive attention in the field of thin-film solar cells owing to its non-toxic and low-cost elements.In this work,double-pressure sputtering technology is applied to obtain highly efficient and ultra-thin(-450 nm)pure Cu_(2)ZnSnS_(4)(CZTS)solar cell.Using mixed materials with sulfides and copper powder as a quaternary target via spark plasma sintering(SPS)method and adopting double-layer sputtering(high+low pressure),a highly adhesive and large-grained CZTS thin film is achieved.As a result,the damage to the surface of Mo contact is decreased so that the reflectivity of incident light can be improved.Moreover,the composition of CZTS film was more uniform and the secondary phase separation at the Mo interface was reduced.Therefore,the interface defect state and deep level defect density in corresponding device with double-pressure is reduced and the ratio of depletion thickness to absorption layer thickness can reached to 0.58,which promoted the collection of photogenerated carriers.Finally,an efficiency of 9.3%for ultra-thin(~450 nm)CZTS film solar cell is obtained.Ping Fan Zhigao Xie Guangxing Liang Muhammad Ishaq Shuo Chen Zhuanghao Zheng Chang Yan Jialiang Huang Xiaojing Hao Yi Zhang Zhenghua Su 2021Journal of Energy Chemistry2021,30,10:2
5Young Yum pill inhibits inflammatory mediators and nuclear factor-kappa B signaling in lipopolysaccharide-stimulated RAW 264.7 macrophages显示文摘OBJECTIVE: To investigate the effect of Young Yum pill (YYP) on inflammatory mediators in cultured RAW 264.7 cells and elucidate the nuclear factor- kappa B (NF-κB)-related mechanism behind the action. METHODS: YYP was extracted with 95% ethanol Lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages were used to evaluate the effect of YYP on inflammatory mediators. Production of nitric oxide (NO) and prostaglandin E2 (PGE2) were measured by Griess test and enzyme-linked immunosorbent assay, respectively. The levels of genes and proteins involved in the generation of inflammatory mediators were examined using real-time polymerase chain reaction and Western blotting, respectively. RESULTS: YYP dose-dependently suppressed LPS-induced production of NO, PGE2 and tumor necrosis factor-α(TNF-α), and elevation of mRNA and protein levels of inducible NO synthase and cyclooxygenase- 2 in RAW 264.7 macrophages. These observations were associated with decreased NF-κB p65 phosphorylation and nuclear localization, enhanced Akt (protein kinase B) phosphorylation, as well as reduced inhibitor of κB (IκB)α degradation and IκB kinase α/β phosphorylation. CONCLUSION: The present study demonstrated an inhibitory effect of YYP on the NF-κB-regulated inflammatory mediators NO, PGE2 and TNF-α in LPS-stimulated RAW 264.7 macrophages, providing a pharmacological basis for the use of YYP in treating inflammatory disorders.Yin Chengle Muhammad Jahangir Hossen Anfernee Kai-Wing Tse Su Tao Fu Xiuqiong Li Ting Guo Hui Zhu Peili Li Junkui Chou Jiyao Wang Yaping Yu Zhiling 2019Journal of Traditional Chinese Medicine2019,39,5:2
6Carrier recombination suppression and transport enhancement enable high-performance self-powered broadband Sb_(2)Se_(3) photodetectors显示文摘Antimony selenide(Sb_(2)Se_(3))is a promising candidate for photodetector applications boasting unique material benefits and remarkable optoelectronic properties.Achieving high-performance self-powered Sb_(2)Se_(3)photodetector through a synergistic regulation of absorber layer and heterojunction interface demonstrates great potential and needs essential investigation.In this study,an effective two-step thermodynamic/kinetic deposition technique containing sputtered and selenized Sb precursor is implemented to induce self-assembled growth of Sb_(2)Se_(3)light absorbing thin film with large crystal grains and desirable[hk1]orientation,presenting considerable thin-film photodetector performance.Furthermore,aluminum(Al^(3+))cation dopant is introduced to modify the optoelectronic properties of CdS buffer layer,and further optimize the Sb_(2)Se_(3)/CdS(Al)heterojunction interface quality.Thanks to the suppressed carrier recombination and enhanced carrier transport kinetics,the champion Mo/Sb_(2)Se_(3)/CdS(Al)/ITO/Ag photodetector exhibits self-powered and broadband characteristics,accompanied by simultaneously high responsivity of 0.9 A W^(-1)(at 11 nW cm^(-2)),linear dynamic range of 120 dB,impressive ON/OFF switching ratio over 10^(6)and signal-to-noise ratio of 10^(9),record total noise determined realistic detectivity of 4.78×10^(12)Jones,and ultra-fast response speed with rise/decay time of 24/75 ns,representing the top level for Sb_(2)Se_(3)-based photodetectors.This intriguing work opens up an avenue for its selfpowered broadband photodetector applications.Shuo Chen Yi Fu Muhammad Ishaq Chuanhao Li Donglou Ren Zhenghua Su Xvsheng Qiao Ping Fan Guangxing Liang Jiang Tang 2023InfoMat2023,5,4:1
7An impedimetric immunosensor for the labelfree detection of bisphenol A 显示文摘Rahman Md A Shiddiky Muhammad J A Park Jang - Su 2007Biosensors and Bioelectronics2007,22,11:1
8ComRank: Joint Weight Technique for the Identification of Influential Communities显示文摘Recently, the community analysis has seen enormous research advancements in the field of social networks. A large amount of the current studies put forward different models and algorithms about most influential people. However, there is little work to shed light on how to rank communities while considering their levels that are determined by the quality of their published contents. In this paper, we propose solution for measuring the influence of communities and ranking them by considering joint weight composed of internal and external influence of communities. To address this issue, we design a novel algorithm called Com Rank: a modification of Page Rank, which considers the joint weight in order to identify impact of each community and ranking them. We use real-world data trace in citation network and perform extensive experiments to evaluate our proposed algorithm. The comparative results depict significant improvements by our algorithm in community ranking due to the inclusion of proposed weighting feature.Muhammad Azam Zia Zhongbao Zhang Ximing Li Haseeb Ahmad Sen Su 2017China Communications2017,14,4:1
9Simulation of the thermal stress in mass concrete using a thermal stress measuring device 显示文摘Muhammad N A Jeong - Su K Lee Y 2009Cement and Concrete Research2009,39,3:1
10Primary pancreatic leiomyosarcoma: a case report 显示文摘Muhammad SU Azam F Zuzana S 2008Cases J2008,1,1:1
11Exploration of Influential People for Viral Marketing显示文摘Exploration of influential people is really a hot issue for effective viral marketing these days. Prior studies overlooked to consider the influence of interaction between users and the authority of users during information dissemination. In this article, we proposed an innovative concept by employing communication strength and authority in order to explore the influential people. First, we calculated communication strength by three kinds of actions including retweets, comments and mentions. Second, we deliberated authority metric by employing total times getting re-tweeted, number of tweets and followers of a user. Then, we propose a novel algorithm called Influential People Label Propagation Algorithm(IPLPA) that considers the proposed metric to explore the influential people in micro-blog networks. We performed extensive experiments to measure the influence and rank of each person within micro-blog network. The comparative study presents that IPLPA depicted effective people while baseline algorithms retrieved low influenced people at top rank. Additionally, influence dissemination also measured for obtained influential people in order to validate proposed concept. The findings of this study would be useful for viral marketing and advertisement campaigns.Muhammad Azam Zia Zhongbao Zhang Liutong Chen Muhammad Hashim Sen Su 2018China Communications2018,15,5:1
12A Novel Improved Artificial Bee Colony and Blockchain-Based Secure Clustering Routing Scheme for FANET显示文摘Flying Ad hoc Network(FANET)has drawn significant consideration due to its rapid advancements and extensive use in civil applications.However,the characteristics of FANET including high mobility,limited resources,and distributed nature,have posed a new challenge to develop a secure and ef-ficient routing scheme for FANET.To overcome these challenges,this paper proposes a novel cluster based secure routing scheme,which aims to solve the routing and data security problem of FANET.In this scheme,the optimal cluster head selection is based on residual energy,online time,reputation,blockchain transactions,mobility,and connectivity by using Improved Artificial Bee Colony Optimization(IABC).The proposed IABC utilizes two different search equations for employee bee and onlooker bee to enhance convergence rate and exploitation abilities.Further,a lightweight blockchain consensus algorithm,AI-Proof of Witness Consensus Algorithm(AI-PoWCA)is proposed,which utilizes the optimal cluster head for mining.In AI-PoWCA,the concept of the witness for block verification is also involved to make the proposed scheme resource efficient and highly resilient against 51%attack.Simulation results demonstrate that the proposed scheme outperforms its counterparts and achieves up to 90%packet delivery ratio,lowest end-to-end delay,highest throughput,resilience against security attacks,and superior in block processing time.Liang Zhao Muhammad Bin Saif Ammar Hawbani Geyong Min Su Peng Na Lin 2021China Communications2021,18,7:1
13不同土壤氮水平下C_(3)和C_(4)植物之间的菌根网络及氮传递显示文摘丛枝菌根真菌(AMF)的菌丝在土壤中通常可以链接相同或不同物种的植物根系,所形成的菌根网络可以将养分从一种植物传递到另一种植物。然而,土壤中的氮(N)含量对不同植物物种之间通过菌根网络进行养分转移的影响尚未实验验证。为了定量研究不同土壤氮水平下羊草(LC)和糙隐子草(CS)之间通过菌根网络的养分转移,本研究建立了两个分室盆栽系统,即CS–LC系统(CS和LC分别为供体和受体)和LC–CS系统(LC和CS分别为供体和受体),设置了3种土壤氮添加水平,即不添加氮对照(N0)、添加7 mg/kg(N1)和添加14 mg/kg(N2)。通过在供体植物一侧土壤添加稳定同位素^(15)N,示踪并量化不同物种植物幼苗之间通过菌根网络传递的氮。在CS–LC系统中,AMF侵染率、菌丝密度和植物生物量在N1水平最高;而在LC–CS系统,AMF侵染率、菌丝密度和植物生物量在N2水平达到最大。此外,在CS–LC系统中,^(15)N转移率介于16%到61%之间,在N1水平最大。对于LC–CS系统,^(15)N传输速率相对较低,最大值出现在N0水平。这些发现表明,土壤中的氮含量能够调控供体植物和受体植物之间经由菌根网络传递的氮养分。Muhammad Atif Muneer Xiaohui Chen Muhammad Zeeshan Munir Zaib-Un Nisa Muhammad Abu Bakar Saddique Shehzad Mehmood Da Su Chaoyuan Zheng Baoming Ji 2023Journal of Plant Ecology2023,16,2:1
14Factors affecting the distribution of microplastics in soils of China显示文摘Microplastics(MPs)are found worldwide in high abundance,posing a potential threat to ecosystems.Despite the ubiquity of MPs in the environment,very little is known about the regional distribution of MPs and underlying factors affecting this distribution in the field,which likely include human activity,but also features of the environment itself.Here,out of a total of 1157 datapoints investigated in 53 Chinese studies,9.68%datapoints were removed as outliers in the heterogeneity analysis.This review revealed that the abundance of MPs was highly heterogeneous.In addition,microplastic(MP)distribution maps based on China demonstrated that the highest abundance of MPs tended to occur near large rivers and central land affected by the intersection of two monsoons.The model-fitting and previous studies showed that MP abundance in China was correlated with longitude,agricultural mulching film usage per capita,temperature,and precipitation.However,due to the heterogeneity of MPs and the low matching degree between the current environmental data and the sampling points,this pattern was not as evident as reported in any single study.Factors affecting the distribution of MPs can not be captured by linear relationships alone,and systematic selection of suitable environmental factors and further model optimization are needed to explore the cause of MP pollution in soil.Overall,this review revealed an uneven distribution of MPs and serves as a reference for model prediction to assess and control plastic pollution in natural soil environments.Yin Liu Matthias CRillig Quan Liu Jingjing Huang Muhammad Amjad Khan Xiaohui Li Qin Liu Qingqing Wang Xuesong Su Linyi Lin Yang Bai Genmao Guo Yi Huang Yong Sik Ok Shan Hu Junfeng Wang Honggang Ni Qing Huang 2023Frontiers of Environmental Science & Engineering2023,17,9:1
15Bombyx mori U-shaped regulates the melanization cascade and immune response via binding with the Lozenge protein显示文摘Zinc finger protein,an important transcription factor,regulates gene expression associated with various physiological and pathological processes.U-shaped,belong to the Friend of GATA(FOG)transcription factor,plays a crucial role in hematopoiesis by interacting with the GATA transcription factor as a co-factor.However,little is known about its functions in insects.In the present study,a U-shaped cDNA was identified and characterized from the silkworm Bombyx mori and its potential roles in innate immunity investigated.The predicted silkworm U-shaped amino acid sequence contained a classical nuclear localization signal(NLS)motif“GESSPKRRRR”at position 45CU459,and arginine residues at position 456 and 478 are the critical sites of the NLS.U-shaped mRNA was detected in all tested tissues of the B.mori;however,the highest levels were found in the hemocytes.U-shaped mRNA expression levels were upregulated in the hemocyte after the Escherichia coli and Staphylococcus aureus challenge.Furthermore,U-shaped knockdown significantly reduced the melanization process and suppressed the expression of melanization-associated genes,including PPO1,PPO2,PPAE and BAEE.In addition,U-shaped interacts with Lozenge protein to regulate the innate immune response of the insect.Our results revealed that U-shaped binds directly to Lozenge protein to modulate the melanization process and innate immune responses in silkworm.Kui Zhang Juan Tan Xiangwei Hao Houyi Tang Muhammad Nadeem Abbas Jingjing Su Yongyue Su Hongjuan Cui 2022Insect Science2022,29,3:1
16查看详情显示文摘Zhong R.L Xu H.L Muhammad S Zhang J. Su Z.M 0,,:1
17查看详情显示文摘Hu Y.Y Sun S.L Muhammad S Xu H.L. Su Z.M 0,,:1
18Reconfigurable Sensing Time in Cooperative Cognitive Network Using Machine Learning显示文摘A cognitive radio network(CRN)intelligently utilizes the available spectral resources by sensing and learning from the radio environment to maximize spectrum utilization.In CRNs,the secondary users(SUs)opportunistically access the primary users(PUs)spectrum.Therefore,unambiguous detection of the PU channel occupancy is the most critical aspect of the operations of CRNs.Cooperative spectrum sensing(CSS)is rated as the best choice for making reliable sensing decisions.This paper employs machinelearning tools to sense the PU channels reliably in CSS.The sensing parameters are reconfigured to maximize the spectrum utilization while reducing sensing error and cost with improved channel throughput.The fine-k-nearest neighbor algorithm(FKNN),employed in this paper,estimates the number of samples based on the nature of the channel under-specific detection and false alarm probability demands.The simulation results reveal that the sensing cost is suppressed by reducing the sensing time and exploiting the traditional fusion rules,validating the effectiveness of the proposed scheme.Furthermore,the global decision made at the fusion center(FC)based on the modified sensing samples,results low energy consumption,higher throughput,and improved detection with low error probabilities.Noor Gul Saeed Ahmed Su Min Kim Muhammad Sajjad Khan Junsu Kim 2023Computers, Materials & Continua2023,,3:0
19A 75 GHz regenerative dynamic frequency divider with active transformer using InGaAs/InP HBT technology显示文摘This letter presents a high speed 2:1 regenerative dynamic frequency divider with an active transformer fabricated in 0.7 μm InP DHBT technology with f_T of 165 GHz and f_(max) of 230 GHz.The circuit includes a two-stage active transformer,input buffer,divider core and output buffer.The core part of the frequency divider is composed of a double-balanced active mixer(widely known as the Gilbert cell) and a regenerative feedback loop.The active transformer with two stages can contribute to positive gain and greatly improve phase difference.Instead of the passive transformer,the active one occupies a much smaller chip area.The area of the chip is only 469×414μm^2 and it entirely consumes a total DC power of only 94.6 mW from a single -4.8 V DC supply.The measured results present that the divider achieves an operating frequency bandwidth from 75 to 80 GHz,and performs a-23 dBm maximum output power at 37.5 GHz with a 0 dBm input signal of 75 GHz.Xi Wang Bichan Zhang Hua Zhao Yongbo Su Asif Muhammad Dong Guo Zhi Jin 2017Journal of Semiconductors2017,38,8:0
20Interface optimization and defects suppression via Na F introduction enable efficient flexible Sb_(2)Se_(3) thin-film solar cells显示文摘Sb_(2)Se_(3) with unique one-dimensional(1D) crystal structure exhibits exceptional deformation tolerance,demonstrating great application potential in flexible devices.However,the power conversion efficiency(PCE) of flexible Sb_(2)Se_(3) photovoltaic devices is temporarily limited by the complicated intrinsic defects and the undesirable contact interfaces.Herein,a high-quality Sb_(2)Se_(3) absorber layer with large crystal grains and benign [hkl] growth orientation can be first prepared on a Mo foil substrate.Then NaF intermediate layer is introduced between Mo and Sb_(2)Se_(3),which can further optimize the growth of Sb_(2)Se_(3)thin film.Moreover,positive Na ion diffusion enables it to dramatically lower barrier height at the back contact interface and passivate harmful defects at both bulk and heterojunction.As a result,the champion substrate structured Mo-foil/Mo/NaF/Sb_(2)Se_(3)/CdS/ITO/Ag flexible thin-film solar cell delivers an obviously higher efficiency of 8.03% and a record open-circuit voltage(V_(OC)) of 0.492 V.This flexible Sb_(2)Se_(3) device also exhibits excellent stability and flexibility to stand large bending radius and multiple bending times,as well as superior weak light photo-response with derived efficiency of 12.60%.This work presents an effective strategy to enhance the flexible Sb_(2)Se_(3) device performance and expand its potential photovoltaic applications.Mingdong Chen Muhammad Ishaq Donglou Ren Hongli Ma Zhenghua Su Ping Fan David Le Coq Xianghua Zhang Guangxing Liang Shuo Chen 2024Journal of Energy Chemistry2024,90,3:0
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费