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Light(Science & Applications) 2019年第1期8卷 766-775页

作者： Jing-Xiang Zhang Wai-Lun Chan Chen Xie Yan Zhou Ho-Fai Chau Partha Maity George T.Harrison aram amassian Omar F.Mohammed Peter A.Tanner Wai-Kwok Wong Ka-Leung Wong Department of Chemistry Hong Kong Baptist UniversityKowloon TongHong Kong S.A.R.China Hanshan Normal University ChaozhouGuangdong ProvinceChina Department of Biology Hong Kong Baptist UniversityKowloon TongHong Kong S.A.R.China KAUST Solar Center Division of Physical Science and EngineeringKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

Although lanthanide double-decker complexes with hetero-macrocyclic ligands as functional luminescent and magnetic materials have promising properties,their inferior water solubility has negated their biomedical ***,four water-soluble homoleptic lanthanide(Ln=Gd,Er,Yb and La)sandwiches with diethylene-glycoldisubstituted porphyrins(DD)are reported,with their structures proven by both quantum chemical calculations and scanning tunneling *** findings demonstrate that the near-infrared emission intensity and singlet oxygen(1O2)quantum yields of YbDD and GdDD in aqueous media are higher than those of the reported capped lanthanide monoporphyrinato analogues,YbN and GdN;the brightness and luminescence lifetime in water of YbDD are greater than those of *** work provides a new dimension for the future design and development of molecular theranostics-based water-soluble double-decker lanthanide bisporphyrinates.

关键词： lanthanide porphyrin complexes

Perovskite Solar Cells toward Eco-Friendly Printing

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Research 2021年第1期2021卷 586-596页

作者： Xiaoming Chang Yuanyuan Fan Kui Zhao Junjie Fang Dongle Liu Ming-Chun Tang Dounya Barrit Detlef-MSmilgies Ruipeng Li Jing Lu Jianbo Li Tinghuan Yang aram amassian Zicheng Ding Yonghua Chen Shengzhong(Frank)Liu Wei Huang Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China King Abdullah University of Science and Technology(KAUST) KAUST Solar Center(KSC)and Physical Science and Engineering Division(PSE)Thuwal 23955-6900Saudi Arabia Cornell High Energy Synchrotron Source Cornell UniversityIthacaNY 14850USA NSLS II Brookhaven National LabUpton New York 11973USA Department of Materials Science and Engineering and Carbon and Organic Electronics Laboratories(ORaCEL)North Carolina State UniversityRaleighNC 27695USA Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing211800 JiangsuChina Dalian National Laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Frontiers Science Center for Flexible Electronics Shaanxi Institute of Flexible Electronics(SIFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical University(NPU)127 West Youyi RoadXi’an710072 ShaanxiChina

Eco-friendly printing is important for mass manufacturing of thin-film photovoltaic(PV)devices to preserve human safety and the environment and to reduce energy consumption and capital ***,it is challenging for perovskite PVs due to the lack of eco-friendly solvents for ambient fast *** this study,we demonstrate for the first time an eco-friendly printing concept for high-performance perovskite solar *** the perovskite and charge transport layers were fabricated from eco-friendly solvents via scalable fast blade coating under ambient *** perovskite dynamic crystallization during blade coating investigated using in situ grazing incidence wide-angle X-ray scattering(GIWAXS)reveals a long sol-gel window prior to phase transformation and a strong interaction between the precursors and the eco-friendly *** insights enable the achievement of high quality coatings for both the perovskite and charge transport layers by controlling film formation during scalable *** excellent optoelectronic properties of these coatings translate to a power conversion efficiency of 18.26%for eco-friendly printed solar cells,which is on par with the conventional devices fabricated via spin coating from toxic solvents under inert *** eco-friendly printing paradigm presented in this work paves the way for future green and highthroughput fabrication on an industrial scale for perovskite PVs.

关键词： coating printing blade

Impressive Near-infrared Brightness and Singlet Oxygen Generation from Strategic Lanthanide–porphyrin Double-decker Complexes in Aqueous Solution

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Impressive Near-infrared Brightness and Singlet Oxygen Gener...

Numerical simulations of smoke spread during solar roof fires

第十一届全国化学生物学学术会议

作者： Jing-Xiang Zhang Partha Maity George T.Harrison aram amassian Omar F.Mohammed Peter A.Tanner Wai-Kwok Wong Ka-Leung Wong Department of Chemistry Hong Kong Baptist University Hanshan Normal University KAUST Solar Center Division of Physical Science and EngineeringKing Abdullah University of Science and Technology(KAUST)

Although lanthanide double-decker complexes with hetero-macrocyclic ligands as functional luminescent and magnetic materials have promising properties, their inferior water solubility has negated their biomedical applications.[1] Herein, four water-soluble homoleptic lanthanide（Ln = Gd, Er, Yb and La） sandwiches with diethylene-glycol-disubstituted porphyrins（DD） are reported, with their structures proven by both quantum chemical calculations and scanning tunneling microscopy. Our findings demonstrate that the near-infrared emission intensity and singlet oxygen（1 O2） quantum yields of YbDD and GdDD in water are higher than those of the reported capped lanthanide monoporphyrinato analogues, YbN and GdN;the brightness and luminescence lifetime in water of YbDD are greater than those of YbN. This work provides a new dimension for the future design and development of molecular theranostics-based water-soluble double-decker lanthanide bisporphyrinates.[2]

关键词： Porphyrin-Lnthanide complex NIR-II luminescence photodynamic therapy

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Building Simulation 2022年第4期15卷 561-570页

作者： Xin Zhang Monireh aram Dahai Qi Liangzhu(Leon)Wang Department of Civil and Building Engineering Universite de Sherbrooke2500boul.de I'UniversiteSherbrooke(Quebec)J1K2R1Canada Centre for Zero Energy Building Studies Deportment of BuildingCivil and Environmental EngineeringConcordia University1455 de Maisonneuve Blvd.WestMontreal(Quebec)H3G 1M8Canada

As the installation of solar roofs increases,so has the concern over *** from a solar roof fire could spread into a building through roof openings and presents a challenge for existing fire protection *** date,there have been insufficient studies on solar roof fire-induced smoke *** this study,we conducted computational fluid dynamics(CDF)simulations using Fire Dynamics Simulator(FDS)to better understand the mechanisms of solar roof fire-induced smoke spread and help with solar roof ***,the photovoltaic(PV)combustion model was created in FDS and validated by experimental data.A parametric study was then simulated to investigate the impacts of roof slopes and vent sizes on the smoke spread of the solar *** was found that the roof slope has a significant effect on the fire smoke *** the roof slope increases,the region of separation,where the smoke and air are mixed,can extend from the leeward side of the building to the roof *** a result,smoke could fill the attic and room more slowly,leading to a lower soot density and lower indoor *** design a solar roof,both fire smoke protection and PV energy performance should be considered,especially for the low latitude regions where the PV optimal title angle regarding energy performance is small and leads to a higher risk of smoke infiltration.

关键词： solar roof fire CFD smoke infiltration

Dry and wet spell probability by Markov chain model-a case study of North Lakhimpur(Assam),India

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International Journal of Agricultural and Biological Engineering 2014年第6期7卷 8-13页

作者： Parmendra Prasad Dabral Kuntal Purkayastha Mai aram Department of Agricultural Engineering North Eastern Regional Institute of Science&Technology(Deemed University)Nirjuli(Itanagar)-791109Arunachal PradeshIndia

For the purpose of crop planning and to carry out the agricultural practices,it is important to know the sequence of dry and wet *** present study was undertaken with the objectives to forecast dry and wet spell analysis using Markov chain model and also to find out the exact time of onset and termination of monsoon at study area for North Lakhimpur(Assam),India using weekly rainfall data for a period of 24 *** results indicated that probability of occurrence of dry week is higher from week 1st to 14^(th) and also from week 41^(st) to 52^(nd).The range of probability of occurrence of dry week in these weeks varies from 41.67% to 100%.Probability of occurrence of wet week is higher from week 17^(th) to 40^(th).The range of probability of wet week in these weeks varies from 66.67% to 100%.Week 1^(st) to 4^(th) and 43^(rd) to 52^(nd) of the year remains under stress on an average,as there are 50% to 95.83% chances of occurrence of two consecutive dry *** analysis showed that monsoon starts effectively from week 23^(rd)(4^(th) June to 10^(th) June)in North *** week 25^(th)(18^(th) June to 24^(th) June)is ideal time for initiation of wet land preparation for growing short duration rice ***-monsoon effectively starts from week 14^(th)(2^(nd) April to 8^(th) April).On week 14^(th) sowing of summer maize(rain fed)may be *** 15^(th)(9^(th) April to 15^(th) April)is ideal time for initiation of wet land preparation for growing long duration rice variety.

关键词： forecast probability dry and wet spell Markov chain model onset and withdrawal of monsoon

Bin2vec:learning representations of binary executable programs for security tasks

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Cybersecurity 2021年第1期4卷 401-414页

作者： Shushan Arakelyan Sima Arasteh Christophe Hauser Erik Kline aram Galstyan Information Sciences Institute 4676 Admiralty WayMarina Del ReyCAUSA

Tackling binary program analysis problems has traditionally implied manually defining rules and heuristics,a tedious and time consuming task for human *** order to improve automation and scalability,we propose an alternative direction based on distributed representations of binary programs with applicability to a number of downstream *** introduce Bin2vec,a new approach leveraging Graph Convolutional Networks(GCN)along with computational program graphs in order to learn a high dimensional representation of binary executable *** demonstrate the versatility of this approach by using our representations to solve two semantically different binary analysis tasks–functional algorithm classification and vulnerability *** compare the proposed approach to our own strong baseline as well as published results,and demonstrate improvement over state-of-the-art methods for both *** evaluated Bin2vec on 49191 binaries for the functional algorithm classification task,and on 30 different CWE-IDs including at least 100 CVE entries each for the vulnerability discovery *** set a new state-of-the-art result by reducing the classification error by 40%compared to the source-code based inst2vec approach,while working on binary *** almost every vulnerability class in our dataset,our prediction accuracy is over 80%(and over 90%in multiple classes).

关键词： Binary program analysis Computer security Vulnerability discovery Neural networks

Inferring topological transitions in pattern-forming processes with self-supervised learning

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npj Computational Materials 2022年第1期8卷 1970-1981页

作者： Marcin Abram Keith Burghardt Greg Ver Steeg aram Galstyan Remi Dingreville Department of Physics and Astronomy University of Southern CaliforniaLos AngelesCA90089USA Information Sciences Institute University of Southern CaliforniaMarina del ReyCA90292USA Center for Integrated Nanotechnologies Nanostructure Physics DepartmentSandia National LaboratoriesAlbuquerqueNM87185USA

The identification of transitions in pattern-forming processes are critical to understand and fabricate microstructurally precise materials in many application *** supervised methods can be useful to identify transition regimes,they need labels,which require prior knowledge of order parameters or relevant microstructures describing these ***,we develop a self-supervised,neural-network-based approach that does not require predefined labels about microstructure classes to predict process parameters from observed *** show that assessing the difficulty of solving this inverse problem can be used to uncover microstructural *** demonstrate our approach by automatically discovering microstructural transitions in two distinct pattern-forming processes:the spinodal decomposition of a two-phase mixture and the formation of binary-alloy microstructures during physical vapor deposition of thin *** approach opens a path forward for discovering unseen or hard-to-discern transitions and ultimately controlling complex pattern-forming processes.

关键词： alloy microstructure transitions

Impact of obesity treatment on gastroesophageal refluxdisease

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World Journal of Gastroenterology 2016年第4期22卷 1627-1638页

作者： Abraham Khan aram Kim Cassandra Sanossian Fritz Francois Division of Gastroenterology Department of MedicineNew York University School of MedicineNew YorkNY 10016United States Department of Medicine New York University School of MedicineNew YorkNY 10016United States New York University School of Medicine New YorkNY 10016United States

Gastroesophageal reflux disease(GERD) is a frequently encountered disorder. Obesity is an important risk factor for GERD, and there are several pathophysiologic mechanisms linking the two conditions. For obese patients with GERD, much of the treatment effort is focused on weight loss and its consistent benefit to symptoms, while there is a relative lack of evidence regarding outcomes after novel or even standard medical therapy is offered to this population. Physicians are hesitant to recommend operative anti-reflux therapy to obese patients due to the potentially higher risks and decreased efficacy, and these patients instead are often considered for bariatric surgery. Bariatric surgical approaches are broadening, and each technique has emerging evidence regarding its effect on both the risk and outcome of GERD. Furthermore, combined antireflux and bariatric options are now being offered to obese patients with GERD. However, currently Rouxen-Y gastric bypass remains the most effective surgical treatment option in this population, due to its consistent benefits in both weight loss and GERD itself. This article aims to review the impact of both conservative and aggressive approaches of obesity treatment on GERD.

关键词： Obesity Gastroesophageal reflux disease Fundoplication Sleeve gastrectomy Gastric banding Gastric bypass

Non-destructive experimental testing and modeling of electrical impedance behavior of untreated and treated ultra-soft clayey soils

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第3期9卷 161-168页

作者： aram M.Raheem Cumaraswamy Vipulanandan Mohammad S. Joshaghani Department of Civil Engineering University of Kirkuk Kirkuk Iraq Department of Civil and Environmental Engineering University of Houston Houston TX USA

The characterization of ultra-soft clayey soil exhibits extreme challenges due to low shear strength of such ***,inspecting the non-destructive electrical impedance behavior of untreated and treated ultra-soft clayey soils gains more *** shear strength and electrical impedance were measured experimentally for both untreated and treated ultra-soft clayey *** shear strength of untreated ultra-soft clayey soil reached 0.17 kPa for 10% bentonite content,while the shear strengths increased to 0.27 kPa and 6.7 kPa for 10% bentonite content treated with 2% lime and 10% polymer,*** electrical impedance of the ultra-soft clayey soil has shown a significant decrease from 1.6 kΩ to 0.607 kΩ when the bentonite content increased from 2% to 10% at a frequency of 300 ***10%lime and 10% polymer treatments have decreased the electrical impedances of ultra-soft clayey soil with 10%bentonite from 0.607 kΩ to 0.12 kΩ and 0.176 kΩ,respectively,at a frequency of 300 kHz.A new mathematical model has been accordingly proposed to model the non-destructive electrical impedancefrequency relationship for both untreated and treated ultra-soft clayey *** new model has shown a good agreement with experimental data with coefficient of determination（R;）up to 0.99 and root mean square error（RMSE） of 0.007 kΩ.

关键词： Ultra-soft clayey soil Bentonite Lime Polymer Shear strength Non-destructive testing Electrical impedance

Scientometric Implosion that Leads to Explosion: Case Study of Armenian Journals

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Journal of Data and Information Science 2020年第3期5卷 187-196页

作者： Shushanik Sargsyan Edita Gzoyan aram Mirzoyan Viktor Blaginin Center for Scientific Information Analysis and Monitoring(CSIAM) Institute for Informatics and Automation ProblemsNational Academy of Sciences of the Republic of Armenia(IIAP NAS RA)0014 YerevanArmenia Yerevan State Medical University after Mkhitar Heratsi Medical Physics Department0025 YerevanArmenia Center on Scientometrics and Ranking Researches.Ural State University of Economics 620014 YekaterinburgRussia

Purpose: The purpose of this study is to introduce a new concept and term into the scientometric discourse and research—scientometric implosion—and test the idea on the example of the Armenian journals. The article argues that the existence of a compressed scientific area in the country makes pressure on the journals and after some time this pressure makes one or several journals explode—break the limited national scientific area and move to the international arena. As soon as one of the local journals breaks through this compressed space and appears at an international level, further explosion happens, which makes the other journals follow the same ***/methodology/approach: Our research is based on three international scientific databases—WoS, Scopus, and RISC CC, from where we have retrieved information about the Armenian journals indexed there and citations received by those journals and one national database—the Armenian Science Citation Index. Armenian Journal Impact Factor(ArmJIF) was calculated for the local Armenian journals based on the general impact factor formula. Journals were classified according to Gl?nzel and Schubert(2003). Findings: Our results show that the science policy developed by the scientific authorities of Armenia and the introduction of ArmJIF have made the Armenian journals comply with international standards and resulted in some local journals to break the national scientific territory and be indexed in international scientific databases of RISC, Scopus, and WoS. Apart from complying with technical requirements, the journals start publishing articles also in foreign languages. Although nearly half of the local journals are in the fields of social sciences and humanities, only one journal from that field is indexed in international scientific databases. Research limitation: One of the limitations of the study is that it was performed on the example of only one state and the second one is that more time passage is needed to firmly

关键词： Sceintometric implosion Armenian Journal Impact Factor(ArmJIF) National scientific databases Armenian Science Citation Index(ASCI) International scientific databases