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Initial results for urban metal distributions in house dusts of syracuse,New York,USA

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Science China(Life Sciences) 2005年第z1期48卷 92-99页

作者： D.L.Johnson J.Hager A.Hunt D.A.Griffith S.Blount S.Ellsworth J.Hintz R.Lucci A.Mittiga D.Prokhorova L.Tidd M.M.Millones M.Vincent SUNY College of Environmental Science and Forestry SyracuseNYUSA Upstate New York Specialist Environmental Consulting 15 Elizabeth St.BaldwinsvilleNYUSA Department of Geography Syracuse UniversitySyracuseNYUSA Department of Geography and Regional Studies University of MiamiCoral GablesFLUSA Department of Chemistry LeMoyne CollegeSyracuseNYUSA

A program of house dust sample collection and analysis has begun in syracuse,New York,USA,in order to determine the feasibility of a geography-based exposure assessment for urban *** sampling program,and the protocols it employs,is described for two different types of wipe media,Ghost Wipes and Whatman *** results show that strong spatial patterns of floor dust loading(mg dust per square foot)can be observed for data aggregated at a spatial scale of about 1600 m(~2.5 km^(2)).Floor dust metal concentrations were similar to those found in other urban environments,with some regional *** median floor dust Pb concentration was~108 mg·kg^(-1)for this initial data set of~264 sampled residential locations,and varied from 50 to 1100 mg Pb·kg^(-1).

关键词： floor dust loading wipe tests GIS dust Pb concentration humidity corrections

Discrete composition control of two-dimensional morphologic all-inorganic metal halide perovskite nanocrystals

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Journal of Energy Chemistry 2021年第8期30卷 257-275,I0006页

作者： Andrew Hunter Davis Weiwei Zheng Department of Chemistry Syracuse University13244 SyracuseUnited States

Metal halide perovskite nanocrystals(NCs)exhibit impressive optical and electronic properties,making them an important class of functional materials with promising applications in solar cells,light emitting diodes(LEDs),photodetectors,and *** addition to the widely studied 0-dimensional(0 D)metal halide perovskite NCs,such as nanocubes,low dimensional perovskites,such as 2 D all-inorganic perovskite(AIP)NCs,subsist with directionally relevant quantum *** anisotropic NCs have the propensity to exhibit interesting optoelectronic properties that are exceedingly difficult to introduce into 0 D systems,yet as of late are largely *** this review,we discuss the recent synthetic progress of 2 D all-inorganic metal halide perovskite NCs with ABX3 ***,we highlight the discrete composition control of the cations(A and B sites)and anions(X site)by dopant incorporation and alloying in 2 D metal halide perovskite *** will also discuss more complex perovskite crystal structures,such as Ruddlesden-Popper double perovskites,and compare these materials to 0 D perovskite ***,our work culminates in the future interests and perspectives of this field with a focus on the wide applicability of 2 D systems and the large variance in structure capable with discrete compositional tuning.

关键词： All-inorganic perovskites Two-dimensional nanocrystals Composition Doping Alloying Ion exchange

Parity violation in electron scattering

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Frontiers of physics 2016年第1期11卷 39-69页

作者： P. Souder K. D. Paschke syracuse univ.rsity Syracuse NY 13244 USA

By comparing the cross Sections for left- and right-handed electrons scattered from various unpolarized nuclear targets, the small parity-violating asymmetry can be measured. These asymmetry data probe a wide variety of important topies, including searches for new fundamental interactions and important features of nuclear structure that cannot be studied with other probes. A special feature of these experiments is that the results are interpreted with remarkably few theoretical uncertainties, which justifies pushing the experiments to the highest possible precision. To measure the small asymmetries accurately, a number of novel experimental techniques have been developed.

关键词： neutral currents weak form factors parton distributions neutron stars physicsbeyond the standard model

Towards data-efficient mechanical design of bicontinuous composites usinggenerative AI

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Theoretical & Applied Mechanics Letters 2024年第1期14卷 57-64页

作者： Milad Masrouri Zhao Qin Department of Civil and Environmental Engineering Syracuse UniversitySyracuseNY 13244USA Laboratory for Multiscale Material Modelling Syracuse UniversitySyracuseNY 13244USA The BioInspired Institute Syracuse UniversitySyracuseNY 13244USA

The distribution of material phases is crucial to determine the composite’s mechanical *** the full structure-mechanics relationship of highly ordered material distributions can be studied with finite number of cases,this relationship is difficult to be revealed for complex irregular distributions,preventing design of such material structures to meet certain mechanical *** noticeable developments of artificial intelligence(AI)algorithms in material design enables to detect the hidden structure-mechanics correlations which is essential for designing composite of complex *** is intriguing how these tools can assist composite ***,we focus on the rapid generation of bicontinuous composite structures together with the stress distribution in *** find that generative AI,enabled through fine-tuned Low Rank Adaptation models,can be trained with a few inputs to generate both synthetic composite structures and the corresponding von Mises stress *** results show that this technique is convenient in generating massive composites designs with useful mechanical information that dictate stiffness,fracture and robustness of the material with one model,and such has to be done by several different experimental or simulation *** research offers valuable insights for the improvement of composite design with the goal of expanding the design space and automatic screening of composite designs for improved mechanical functions.

关键词： Generative artificial intelligence Stable diffusion Composite design Phase field model Molecular dynamics simulation

Materials and surface engineering to control bacterial adhesion and biofilm formation： A review of recent advances

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Frontiers of Chemical Science and Engineering 2014年第1期8卷 20-33页

作者： Huan GU Dacheng REN Department of Biomedical and Chemical Engineering Syracuse Biomaterials Institute Syracuse University Syracuse NY 13244 USA Department of Civil and Environmental Engineering Department of Biology Syracuse University Syracuse NY 13244 USA

Bacterial adhesion to surfaces and subsequent biofilm formation are a leading cause of chronic infections and biofouling. These processes are highly sensitive to environmental factors and present a challenge to research using traditional approaches with uncontrolled surfaces. Recent advances in materials research and surface engineering have brought exciting opportunities to pattern bacterial cell clusters and to obtain synthetic biofilms with well-controlled cell density and morphology of cell clusters. In this article, achievements in this field directions. we will review the recent and comment on the future

关键词： surface engineering materials bacterial adhesion biofilm control review

Nationwide evaluation of energy and indoor air quality predictive control and impact on infection risk for cooling season

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Building Simulation 2023年第2期16卷 205-223页

作者： Xuezheng Wang Bing Dong Jianshun(Jensen)Zhang Department of Mechanical and Aerospace Engineering Syracuse UniversitySyracuseNY 13244USA

Since the coronavirus disease 2019,the extended time indoors makes people more concerned about indoor air quality,while the increased ventilation in seeks of reducing infection probability has increased the energy usage from heating,ventilation,and air-conditioning *** this study,to represent the dynamics of indoor temperature and air quality,a coupled grey-box model is *** model is identified and validated using a data-driven approach and real-time measured data of a campus *** manage building energy usage and indoor air quality,a model predictive control strategy is proposed and *** simulation study demonstrated 18.92%energy saving while maintaining good indoor air quality at the testing *** nationwide simulation studies assessed the overall energy saving potential and the impact on the infection probability of the proposed strategy in different climate *** results showed 20%–40%energy saving in general while maintaining a predetermined indoor air quality *** the infection risk is increased due to the reduced ventilation rate,it is still less than the suggested threshold(2%)in general.

关键词： model predictive control indoor air quality infection risk energy-saving large-scale simulation

Modeling urban scale human mobility through big data analysis and machinelearning

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Building Simulation 2024年第1期17卷 3-21页

作者： Yapan Liu Bing Dong Department of Mechanical&Aerospace Engineering Syracuse University263 Link HallSyracuseNY 13244USA

In the United States,the buildings sector consumes about 76%of electricity use and 40% of all primary energy use and associated greenhouse gas *** behavior has drawn increasing research interests due to its impacts on the building energy ***,occupant behavior study at urban scale remains a challenge,and very limited studies have been *** an effort to couple big data analysis with human mobility modeling,this study has explored urban scale human mobility utilizing three months Global Positioning System(GPS)data of 93,o00 users at Phoenix Metropolitan *** research extracted stay points from raw data,and identified users'home,work,and other locations by Density-Based Spatial Clustering ***,daily mobility patterns were constructed using different types of *** propose a novel approach to predict urban scale daily human mobility patterns with 12-hour prediction horizon,using Long Short-Term Memory(LSTM)neural network *** shows the developed models achieved around 85%average accuracy and about 86%mean *** developed models can be further applied to analyze urban scale occupant behavior,building energy demand and flexibility,and contributed to urban planning.

关键词： urban human mobility big data analysis urban scale occupant behavior recurrent neural networks

New Models for Evaluating the Adsorption Rate of an Adsorbent

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Chinese Journal of Chemical Engineering 1998年第1期6卷 5-15页

作者：姚春才 Chi Tien Department of Chemical Engineering Nanjing Foresty University Department of Chemical Engineering and Materials Science Syracuse University Syracuse

Four models for the rate of adsorption in an adsorbent(slab-like,cylindrical or spherical)*** parabolic profile(PP)model is obtained by assuming a parabolic intraparticle *** shell-core(SC)model is based on a shell-core type *** modified shell-core(MSC)medel isan extension of the SC *** the general driving force(GDF)model is a weighted average of the PP andMSC *** calculations show that the GDF model provides the best approximation.

关键词： adsorption rate adsorption adsorbent

Enhanced singlet oxygen generation by hybrid Mn-doped nanocomposites for selective photo-oxidation of benzylic alcohols

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Nano Research 2020年第6期13卷 1668-1676页

作者： Zhi-Jun Li Shuya Li Andrew Hunter Davis Elan Hofman Gyu Leem Weiwei Zheng Department of Chemistry Syracuse UniversitySyracuseNY13244USA Department of Chemistry State University of New York College of Environmental Science and ForestrySyracuseNY13210USA The Michael M.Szwarc Polymer Research Institute SyracuseNY13210USA

Transition-metal ions doped nanocrystals(NCs),specifically Mn-doped NCs,hold great potential in the field of photocatalysis,especially,to improve photocatalytic performance for singlet oxygen(1O2)***,we report the design of a novel Mn-doped NC-based nanocomposites,specifically,silica-coated Mn-doped CdS/ZnS NCs decorated with Pt NCs(denoted as Mn-NCs@SiO2-Pt),which enhance photocatalytic 1O2 *** to the long-lived Mn excited state(on the order of ms),the energy-transfer between Mn-NCs and molecular oxygen is facilitated with the assistance of the Pt NCs adhered to the Mn-NC@SiO2 ***,the Mn-NCs@SiO2-Pt composites,integrate the advantages of Mn-doped NCs,a protective silica layer,and Pt NCs to exhibit excellent catalytic activity and selectivity for the selective oxidation of primary benzylic alcohols to aldehydes through an 1O2 engaged oxidation process under visible-light *** work paves the way for enhancing catalytic performance via facilitated energy transfer relaxation by utilizing the long-lived excited-state of Mn2+dopant ions in nanocomposites.

关键词： doped nanocrystals energy transfer photocatalysis singlet oxygen selective oxidation