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Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-Ce02 nanocatalysts used for total oxidation of xylene at low temperatures

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Frontiers of Environmental Science & Engineering 2013年第3期7卷 365-381页

作者： Zeinab JAMALZADEH Mohammad HAGHIGHI nazli ASGARI Chemical Engineering Faculty Sahand University of Technology Tabriz *** Iran Reactor and Catalysis Research Center (RCRC) Sahand University of Technology Tabriz *** Iran

In this work, xylene removal from waste gas streams was investigated via catalytic oxidation over Pd/ carbon-zeolite and Pd/carbon-CeO2 nanocatalysts. Acti- vated carbon was obtained from pine cone chemically activated using ZnC12 and modified by HaPO4. Natural zeolite of clinoptilolite was with HC1, while nano-ceria modified by acid treatment was synthesized via redox method. Mixed supports of carbon-zeolite and carbon- ceria were prepared and palladium was dispersed over them via impregnation method. The prepared samples were characterized by X-ray emission scanning electron diffraction （XRD）, field microscopy （FESEM）, Brunauer-Emmett-Teller surface area （BET）, Fourier transform infrared spectroscopy （FTIR） and thermogravi- metric （TG） techniques. Characterization of nanocatalysts revealed a good morphology with an average particle size in a nano range, and confirmed the formation ofnano-ceria with an average crystallite size below 60 nm. BET analysis indicated a considerable surface area for catalysts （-1000 m^2·g^-1）. FTIR patterns demonstrated that the surface groups of synthesized catalysts are in good agreement with the patterns of materials applied in catalyst synthesis. The performance of catalysts was assessed in a low-pressure catalytic oxidation pilot in the temperature range of 100℃-250℃. According to the reaction data, the synthesized catalysts have been shown to be so advantageous in the removal of volatile organic compounds （VOCs）, represent- ing high catalytic performance of 98% for the abatement of xylene at 250℃. Furthermore, a reaction network is proposed for catalytic oxidation of xylene over nanocata- lysts.

关键词： Pd/carbon-Ce02 Pd/carbon-zeolite pinecone ZnC12 catalytic oxidation xylene

Digital compass for multi-user beam access in mmWave cellular networks

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Digital Communications and Networks 2023年第4期9卷 879-886页

作者： Adel Aldalbahi nazli Siasi Asim Mazin Mohammed A.Jasim Department of Electrical Engineering King Faisal UniversityAl-Ahsa34221Saudi Arabia School of Computing DePaul UniversityChicagoIL60604USA Department of Electrical Engineering University of South FloridaTampaFL33620USA School of Engineering and Technology University of WashingtonTacomaWA98402USA

Beamforming in stand-alone Millimeter-Wave(mmWave)communications results in prolonged access times and latencies due to the increased number of measurements required to determine the optimal beam directions at the Mobile Station(MS)and Base Station(BS),returning the highest received signal ***,dynamic and fast access schemes that meet the Third-Generation Partnership Project(3GPP)specifications are required ***,in this paper,a novel initial access scheme is proposed for multiple MS users by leveraging for the first time a digital compass in the access ***,when a new MS joins the footprint of a BS,it probes the channel for beacon signaling about the BS direction,i.e.,broadcasted by a neighboring MS that completed beam association at previous time ***,a digital compass is utilized to adjust the coordinates of the BS according to the location of the new *** proposed scheme is applied for a single and multi-user settings at various broadcasting *** includes a single associated MS user that broadcasts information to a single incoming MS user,a single user that broadcasts signals to multiple incoming users,or all multiple associated users broadcast to multiple incoming ***,the proposed schemes yield in notable efficiency in terms of the computational complexity,access times,power and energy consumption as compared to existing access ***,high success rates are achieved at the detriment of relatively higher cost.

关键词： Millimeter wave Initial beam access Electronic compass Beamforming Access times Energy consumption

Non-Associative Algebra Redesigning Block Cipher with Color Image Encryption

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Computers, Materials & Continua 2021年第4期67卷 1-21页

作者： nazli Sanam Asif Ali Tariq Shah Ghazanfar Farooq Department of Mathematics Quaid-i-Azam UniversityIslamabad44000Pakistan Department of Computer Science Quaid-i-Azam UniversityIslamabad44000Pakistan

The substitution box(S-box)is a fundamentally important component of symmetric key *** S-box is a primary source of non-linearity in modern block ciphers,and it resists the linear *** approaches have been adopted to construct S-boxes.S-boxes are commonly constructed over commutative and associative algebraic structures including Galois fields,unitary commutative rings and cyclic and non-cyclic finite *** this paper,first a non-associative ring of order 512 is obtained by using computational techniques,and then by this ring a triplet of 8×8 S-boxes is *** motivation behind the designing of these S-boxes is to upsurge the robustness and broaden the key space due to non-associative and noncommutative behavior of the algebraic structure under consideration.A novel color image encryption application is anticipated in which initially these 3 S-boxes are being used to produce confusion in three layers of a standard RGB ***,for the sake of diffusion 3D Arnold chaotic map is used in the proposed encryption scheme.A comparison with some of existing chaos and S-box dependent color image encryption schemes specs the performance results of the anticipated RGB image encryption and observed as approaching the standard prime level.

关键词： Block cipher s-box nonlinearity color image encryption 3D chaotic map

Coupling effect analysis of dam break flood spread and building collapse based on numerical simulation

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Science China(Technological Sciences) 2024年第11期67卷 3571-3584页

作者： SONG TianXu LIU JiaHong MEI Chao ZHANG MengXue WANG Hao nazli Sana State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China Key Laboratory of River Basin Digital Twinning of Ministry of Water Resources Beijing 100038China Engineering and Technology Research Center for Water Resources and Hydrogeology of the Ministry of Water Resources Beijing 100044China

Large-scale floods induced by dam failures could cause significant structural damage to buildings and massive loss of *** coupling effect of large-scale flood spread and building collapse has complex impacts on the entire flow field,affecting flood risk assessment and building vulnerability *** this paper,a dynamic elevation change model designed to seamlessly interface with a structural vulnerability assessment model to investigate the interaction effect between floods and buildings is *** efficiency of the framework was validated by reconstructing the Gleno Dam-Break flood in ***,a hydrodynamic model of the Jinsha-Yalong River that considers dynamic building collapse was *** proposed model was compared with two traditional building treatment approaches and one that ignored the *** results show that the interaction between the flood and buildings decreases the low-velocity area(below 1 m/s)by 7.44%-9.56%while increasing the high velocity area(above 4 m/s)by 10.71%-11.96%.Traditional and neglecting building treatments provide preliminary insights into densely built areas,and the latter could be an alternative for simplification because it can represent the worst-case *** collapse in response to large-scale floods typically occurs in four stages:flood spread,rapid expansion,gradual expansion,and flood *** analysis offers novel perspectives on flood prediction and simulations where the floodplain may contain *** method could be useful for assessing structural vulnerability associated with large building stocks and developing flood mitigation strategies in densely populated areas.

关键词： dam break flood risk structural vulnerability building collapse urban area

Importance of antimicrobial susceptibility testing for the management of eradication in Helicobacter pylori infection

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World Journal of Gastroenterology 2017年第16期23卷 2854-2869页

作者： nazli Arslan ozlem Yilmaz Ebru Demiray-Gürbüz Department of Medical Microbiology Faculty of MedicineDokuz Eylül UniversityInciraltiIzmir 35340Turkey

The management of Helicobacter pylori(H. pylori) infection treatment differs from the common treatment protocol for other infectious diseases. Because culture-or molecular-guided approaches face several practical issues, such as the invasive procedures required to obtain gastric biopsy specimens and the lack of availability of routine laboratory testing in some places, H. pylori treatment includes the administration of two or three empirically selected antibiotics combined with a proton pump inhibitor rather than evidence-based eradication treatment. The efficacy of empirical therapy is decreasing, mostly due to increasing multiple resistance. Multiresistance to levofloxacin, clarithromycin, and metronidazole, which are commonly used in empirical treatments, appears to have increased in many countries. Mutations play a primary role in the antimicrobial resistance of H. pylori, but many different mechanisms can be involved in the development of antibiotic resistance. Determining and understanding these possible mechanisms might allow the development of new methods for the detection of H. pylori and the determination of antimicrobial resistance. A treatment based on the detection of antimicrobial resistance is usually more effective than empirical treatment. Nevertheless, such an approach before treatment is still not recommended in the Maastricht guidelines due to the difficulty associated with the routine application of available cultureor molecular-based susceptibility tests, which are usually administered in cases of treatment failure. The management of first and rescue treatments requires further research due to the steadily increase in antimicrobial resistance.

关键词： Helicobacter pylori Antimicrobial resistance Antimicrobial susceptibility testing Susceptibility-guided therapy Treatment management

Designing resilient and economically viable water distribution systems:a multi-dimensional approach

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Resilient Cities and Structures 2023年第3期2卷 19-29页

作者： Beatrice Cassottana Srijith Balakrishnan nazli Yonca Aydin Giovanni Sansavini Singapore-ETH Centre 1 Create WayCREATE Tower 06-01138602 Singapore ETH Zürich Reliability and Risk EngineeringLeonhardstrasse 21Zürich 8092Switzerland Delft University of Technology Faculty of TechnologyPolicy and ManagementJaffalaan 5BX Delft 2628Netherlands

Enhancing the resilience of critical infrastructure systems requires substantial investment and entails trade-offs between environmental and economic *** this aim,we propose a methodological framework that com-bines resilience and economic analyses and assesses the economic viability of alternative resilience designs for a Water Distribution System(WDS)and its interdependent power and transportation ***-based net-work models simulate the interdependent infrastructure systems and Global Resilience Analysis(GRA)quantifies three resilience metrics under various disruption *** economic analysis monetizes the three metrics and compares two resilience strategies involving the installation of remotely controlled *** the Micropolis synthetic interdependent water-transportation network as an example,we demonstrate how our framework can guide infrastructure stakeholders and utility operators in measuring the value of resilience ***,our approach highlights the importance of economic analysis in designing resilient infrastructure systems.

关键词： Resilience Economic analysis Water distribution system Interdependency Recovery strategy

Validity and reliability study of Turkish version on low vision with quality of life questionnaire

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International Journal of Ophthalmology(English edition) 2011年第5期4卷 546-551页

作者： Aysun Idil Mehmet Ozen nazli Atak Atilla Elhan Selcen Pehlivan Department of Public Health Centre of Low Vision RehabilitationFaculty of MedicineAnkara University Department of Medical Education Faculty of MedicineAnkara University Department of Biostatistics Faculty of MedicineAnkara University

AIM:To adapt the low vision-related quality of life(LVQOL) instrument into Turkish language and to assess its validity and ***:The study was conducted in 387 patients attending the Centre of Low Vision Rehabilitation,Faculty of Medicine,Ankara *** statistical analyses,the Spearman's correlation coefficient,Cronbach's alpha coefficient and Confirmatory Factor Analysis(CFA) were ***:According to results of CFA,the item in the 'Adjustment' subscale because of having the factor loading below 0.40,was excluded from the *** reliability of the questionnaire was assessed according to Cronbach's alpha *** reliability of the 'Distance Vision,Mobility,and Lighting' subscale was ?琢=0.863;of the 'Adjustment' subscale was ?琢=0.694;'Reading and Fine Work' was ?琢=0.791,and 'Activities of Daily Living' was ?琢= *** these results indicate that the questionnaire is reliable to measure the vision related quality of life of low-vision *** correlations between the subscales were also analyzed,and the correlation between 'Adjustment' and 'Reading and Fine Work' was found to be the lowest(rs=0.336,P <0.001),whereas the strongest correlation was found between the 'Reading and Fine Work',and 'Activities of Daily Living'.Additionally,the 'Adjustment' dimension showed the strongest correlation with only 'Distance Vision,Mobility,and Lighting' ***:After removing the last item in the second dimension,the Turkish adaptation of all dimensions of the LVQOL has been shown to be reliable,valid and suitable for use in patients with low vision in Turkey.

关键词： low vision-related quality of life Turkish version low vision rehabilitation

Characteristics and clinical presentations of pediatric 0retinoblastoma in North-western Iran

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International Journal of Ophthalmology(English edition) 2012年第4期5卷 510-512页

作者： Reza Nabie nazli Taheri Ali Mahdavi Fard Rohollah Fadaei Fouladi Department of Ophthalmology Nikookari Eye Hospital Tabriz University of Medical SciencesTabriz Iran Department of Ophthalmology Alavi Eye Hospital Tabriz University of Medical SciencesTabriz Iran Imam Reza Hospital Tabriz University of Medical SciencesTabriz Iran

·AIM:To report the characteristics and clinical presentations of retinoblastoma in a series of pediatric patients from Iran. ·METHODS:In this retrospective study, profiles of pediatric patients with retinoblastoma archived in a referral eye hospital in north-west of Iran during 7 years (n =40 patients with 57 eyes) were reviewed. Demographics, as well as the laterality, clinical manifestations and the types of treatment were the major endpoints. The Student’s t test, Mann-Whitney U -test, Chi-square or Fishers’ Exact test was used for analysis where appropriate. ·RESULTS:There were 23 cases (57.7%) with unilateral and 17 cases (42.5%) with bilateral involvement. The male to female ratio was 1 to 1.4 with a mean admitting age of 24.0±11.3 (range:5-62) months. The mean diagnosis delay was (7.4±9.6) months (range:10 days to 13 months). The most common presenting sign was leukocoria (97.5%) followed by proptosis (7.5%), strabismus (7.5%), hyphema (5%), orbital cellulitis (5%) and glaucoma (2.5%). Enucleation was performed in 95.7% of the cases with unilateral involvement and at least one eye of the patients with bilateral disease. A second enucleation was performed in other 3 patients (17.6%) of the latter group. ·CONCLUSION:This is the first study evaluating a series of Iranian children with retinoblastoma.

关键词： retinoblastoma epidemiology clinical presentation

Fabrication of coconut shell-derived porous carbons for CO_(2) adsorption application

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Frontiers of Chemical Science and Engineering 2023年第8期17卷 1122-1130页

作者： Jiali Bai Jiamei Huang Qiyun Yu Muslum Demir Eda Akgul Bilge nazli Altay Xin Hu Linlin Wang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua 321004China Department of Chemical Engineering Osmaniye Korkut Ata UniversityOsmaniye 80000Turkey College of Engineering Technology Print and Graphic Media ScienceRochester Institute of TechnologyNew York 14623USA Institute of Pure and Applied Sciences Marmara UniversityIstanbul 34722Turkey Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province College of EngineeringZhejiang Normal UniversityJinhua 321004China

Biomass-derived porous carbons have been considered as the most potential candidate for effective CO_(2) adsorbent thanks to being widely-available precursor and having highly porous structure and stable chemical/physical ***,the biomass-derived porous carbons still suffer from the poor optimization process in terms of the synthesis ***,we have successfully fabricated coconut shell-derived porous carbon by a simple one-step synthesis *** as-prepared carbon exhibits advanced textual activity together with well-designed micropore morphology and possesses oxygen-containing functional groups(reached 18.81 wt%)within the carbon *** on the different activating temperatures(from 700 to 800℃)and KOH/biomass mass ratios(from 0.3 to 1),the 750℃ and 0.5 mass ratio were found to be enabling the highest CO_(2) capture *** optimal adsorbent was achieved a high CO_(2) uptake capacity of 5.92 and 4.15 mmol·g^(−1) at 0 and 25℃(1 bar),*** importantly,as-prepared carbon adsorbent exhibited moderate isosteric heat of adsorption and high CO_(2)/N_(2) *** results were revealed not only the textural feature but also the surface functional groups critically determine the CO_(2) capture performance,indicating coconut shell-derived porous carbon has a considerable potential as a solid-state adsorbent for the CO_(2) capture.

关键词： porous carbons CO_(2)adsorption KOH activation single step reaction biomass