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Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

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Chinese Physics B 2019年第8期28卷 355-363页

作者： monica Gambhir Vinod Prasad Department of Physics Swami Shraddhanand CollegeUniversity of DelhiDelhi 110036India Departmento de Quimica Universidad Autonoma MetropolitansSan Rafael Atlixco No186IztapalapaMexico DF 09340Mexico

Multiphoton excitations and nonlinear optical properties of exciton states in GaAs/AlxGa1-xAs coupled quantum well structure have been theoretically investigated under the influence of a time-varying high-intensity terahertz(THz)laser ***-perturbative Floquet theory is employed to solve the time-dependent equation of motion for the laser-driven excitonic quantum well *** response to the field parameters,such as intensity and frequency of the laser electric field on the state populations,can be used in various optical semiconductor device applications,such as photodetectors,sensors,all-optical switches,and terahertz emitters.

关键词： quantum well excitons terahertz non-perturbative multiphoton laser Floquet

Estimation of the behavior factor of existing RC-MRF buildings

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Earthquake Engineering and Engineering Vibration 2018年第1期17卷 191-204页

作者： Marco Vona monica Mastroberti School of Engineering University of Basilicata

In recent years, several research groups have studied a new generation of analysis methods for seismic response assessment of existing buildings. Nevertheless, many important developments are still needed in order to define more reliable and effective assessment procedures. Moreover, regarding existing buildings, it should be highlighted that due to the low knowledge level, the linear elastic analysis is the only analysis method allowed. The same codes（such as NTC2008, EC8） consider the linear dynamic analysis with behavior factor as the reference method for the evaluation of seismic demand. This type of analysis is based on a linear-elastic structural model subject to a design spectrum, obtained by reducing the elastic spectrum through a behavior factor. The behavior factor（reduction factor or q factor in some codes） is used to reduce the elastic spectrum ordinate or the forces obtained from a linear analysis in order to take into account the non-linear structural capacities. The behavior factors should be defined based on several parameters that influence the seismic nonlinear capacity, such as mechanical materials characteristics, structural system, irregularity and design procedures. In practical applications, there is still an evident lack of detailed rules and accurate behavior factor values adequate for existing buildings. In this work, some investigations of the seismic capacity of the main existing RC-MRF building types have been carried out. In order to make a correct evaluation of the seismic force demand, actual behavior factor values coherent with force based seismic safety assessment procedure have been proposed and compared with the values reported in the Italian seismic code, NTC08.

关键词： seismic behavior existing buildings seismic safety assessment behavior factor

On Standard Invariants of Bi-polymatroidal Ideals

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Algebra Colloquium 2014年第2期21卷 267-274页

作者： monica La Barbiera University of Messina Department of'Mathematics Viale Ferdinando Stagno d'Aleontres 31 98166 Messina Italy

The standard invariants of the bi-polymatroidal ideals of Veronese type are computed.

关键词： bi-polymatroidal ideals linear quotients

Gallstones in patients with liver cirrhosis:Incidence,etiology,clinical and therapeutical aspects

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World Journal of Gastroenterology 2014年第23期20卷 7277-7285页

作者： monica Acalovschi 3~(rd) Medical Clinic University of Medicine and Pharmacy400162 Cluj-NapocaRomania

Gallstones occur in about one third of the patients having liver *** gallstones are the most frequent type,while cholesterol stones represent about15%of all stones in *** secretion of unconjugated bilirubin,increased hydrolysis of conjugated bilirubin in the bile,reduced secretion of bile acids and phospholipds in bile favor pigment lithogenesis in *** hypomotility also contributes to *** most recent data regarding risk factors for gallstones are *** prevalence increases with age,with a ratio male/female higher than in the general *** alcoholism,viral C cirrhosis,and non-alcoholic fatty liver disease are the underlying liver diseases most often associated with *** are often asymptomatic,and discovered *** asymptomatic,expectant management is recommended,as for asymptomatic gallstones in the general ***,a closer follow-up of these patients is necessary in order to earlier treat symptoms or *** symptomatic stones,laparoscopic cholecystectomy has become the therapy of ***-Pugh class and MELD score are the best predictors of outcome after *** with severe liver disease are at highest surgical risk,therefore gallstone complications should be treated using noninvasive or minimally invasive procedures,until stabilization of the patient condition.

关键词： Liver cirrhosis Pigment gallstones Cholesterol gallstones Lithogenesis Risk factors Asymptomatic gallstones Laparoscopic cholecystectomy

Clustering spatio-temporal bi-partite graphs for finding crowdsourcing communities in IoMT networks

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Big Earth Data 2021年第1期5卷 24-48页

作者： Kaine Black monica Wachowicz Department of Geodesy and Geomatics Engineering University of New BrunswickFrederictonCanada School of Geospatial Science RMIT UniversityMelbourneAustralia

The Internet of Moving Things is rapidly becoming a reality where intelligent devices and infrastructures are fostering real-time data sus-tainability in smart cities and advancing crowdsourced tasks to improve energy consumption,waste management,and traffic *** intelligent devices create a complex network scenario in which they often move together or in conjunction with one another to complete crowdsourced *** research premise is that mobility relationships matter when performing these tasks,and therefore,a graph model based on representing the changes in mobility relation-ships is needed to help identify the neighbour devices that are moving close to one another in our physical world but also seamlessly con-nected in their virtual *** propose a bi-partite community mobility graph model for linking intelligent devices in both virtual and physical worlds,as well as reaching a trade-off between crowd-sourced tasks designed with explicit and implicit citizen *** paper aims to explore a bi-partite graph as a promising spatiotemporal representation of IoMT networks since changes in mobility relationships over time can indicate volunteer organisation at the device and community *** Louvain community detection method is proposed to find communities of intelligent devices to reveal a value conscious participation of *** proposed bi-partite graph model is evaluated using a real-world scenario in transportation,confirming the main role of evolving communities in developing crowdsourcing IoMT networks.

关键词： Bi-partite graph modelling Internet of Moving Things crowdsourcing

Algebraic Properties of Universal Squarefree Lexsegment Ideals

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Algebra Colloquium 2016年第2期23卷 293-302页

作者： Marilena Crupi monica La Barbiera University of Messina Department of Mathematics and Computer Science Viale Ferdinando Stagno d'Alcontres 31 98166 Messina Italy

Let K be a field and let A = K[X1,...,Xn] be the polynomial ring in X1, ..., Xn with coefficients in K. In this paper we study the universal squarefree lexsegment ideals, and put our attention on their combinatorics computing some invariants. Moreover, we study the link between such a special class of squarefree lexsegment ideals and the so-called s-sequences.

关键词： monomial ideals squarefree lexicographic ideals minimal resolutions s-sequences standard invariants

Cytomorphological Analysis of Keratinocytes in Oral Smears from Tobacco Users and Oral Squamous Cell Carcinoma Lesions—A Histochemical Approach

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International Journal of Oral Science 2010年第1期2卷 45-52页

作者： Suneet Khandelwal monica Charlotte Solomon Jaipur Dental College Jaipur Highway Department of Oral Pathology Manipal College of Dental SciencesManipal University

Aim To analyse the cytomorphological features of kerati- nocytes in smears obtained from the oral mucosa of tobacco users and from oral squamous cell carcinoma lesions. Methodology Oral smears were obtained from clinically, normal appearing mucosa of oral squamous cell carcinoma patients （n=20） and from the mucosa of smokers （n=20）, and apparently healthy individuals （n=20） were used as controls. The smears were histochemically stained and cytomorphological assessment of the keratinocytes was carried out. One-way ANOVA （Analysis of Variance） was used for comparing the parameters among multiple groups and Tukey-HSD test was used to compare the mean values between groups. Results The mean nuclear area of keratinocytes from the mucosa of tobacco users was 46 ± 2.57 and that of the oral squamous cell carcinoma lesion was 81.54±4.31. While there was a significant （P=0.001） reduction in the cellular area of keratinocytes from oral squamous cell carcinoma lesion when compared with those from oral smears of tobacco users. Conclusion Cytomorphometric analysis of keratinocytes can serve as a useful adjunct in the early diagnosis of oral squamous cell carcinomas.

关键词： exfoliative cytology cytomorphometry Feulgen stain tobacco users oral cancer

Suppression of Soybean Oleosin Produces Micro-Oil Bodies that Aggregate into Oil Body/ER Complexes

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Molecular Plant 2008年第6期1卷 910-924页

作者： monica A. Schmidt Eliot M. Herman Donald Danforth Plant Science Center 975 N Warson Rd St Louis MO 63132 USA Plant Genetics Research Unit USDA/ARS Donald Danforth Plant Science Center 975 N. Warson Rd St Louis MO 63132 USA

Using RNAi, the seed oil body protein 24-kDa oleosin has been suppressed in transgenic soybeans. The endoplasmic reticulum （ER） forms micro-oil bodies about 50 nm in diameter that coalesce with adjacent oil bodies forming a hierarchy of oil body sizes. The oil bodies in the oleosin knockdown form large oil body-ER complexes with the interior dominated by micro-oil bodies and intermediate-sized oil bodies, while the peripheral areas of the complex are dominated by large oil bodies. The complex merges to form giant oil bodies with onset of seed dormancy that disrupts cell structure. The transcriptome of the oleosin knockdown shows few changes compared to wild-type. Proteomic analysis of the isolated oil bodies of the 24-kDa oleosin knockdown shows the absence of the 24-kDa oleosin and the presence of abundant caleosin and lipoxygenase. The formation of the micro-oil bodies in the oleosin knockdown is interpreted to indicate a function of the oleosin as a surfactant.

关键词： RNAi protein soybean en-doplasmic reticulum

GEX3, Expressed in the Male Gametophyte and in the Egg Cell of Arabidopsisthaliana, Is Essential for Micropylar Pollen Tube Guidance and Plays a Role during Early Embryogenesis

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Molecular Plant 2008年第4期1卷 586-598页

作者： monica Alandete-Saez Mily Ron Sheila McCormick Plant Gene Expression Center and Department of Plant and Microbial Biology USDA/ARS-UC-Berkeley 800 Buchanan St Albany CA 94710 USA

Double fertilization in flowering plants occurs when the two sperm cells, carried by the pollen tube, are released in a synergid cell of the embryo sac and then fertilize the egg and the central cell. Proteins on the surfaces of the sperm, egg, central, and synergid cells might be important for guidance and recognition/fusion of the gametes. Here, we present functional analyses ofArabidopsis GEX3, which encodes a plasma membrane-localized protein that has homologs in other plants. GEX3 is expressed in both the vegetative and sperm cells of the male gametophyte and in the egg cell of the female gametophyte. Transgenic lines in which GEX3 was down-regulated or overexpressed, using the Arabidopsis GEX2 promoter, had reduced seed set. Reciprocal crosses and imaging after pollination with a reporter line showed that, in both cases, the defect causing reduced seed set occurred in the female. In the antisense lines, micropylar pollen tube guidance failed, In the overexpression lines, fertilization of mutant ovules was mostly blocked because pollen tube guidance failed, although, occasionally, non-viable embryos were formed. We conclude that properly regulated expression of GEX3 in the egg cell of Arabidopsis is essential for pollen tube guidance.

关键词： antisense double fertilization female gametophyte real-time PCR plasma membrane protein PQQ domain