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Identification of Cu in <i>Crassostrea virginica</i>Tissue Using the Technique of Laser-Induced Breakdown Spectroscopy (LIBS)

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Optics and Photonics Journal 2021年第3期11卷 51-62页

作者： Xochitl Patricia Urrutia-meza Fabio Felipe chalé-Lara Rogelio Ortega-Izaguirre Instituto Politécnico Nacional Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada U. Altamira Altamira México

The analysis of metals in aquatic organisms is of great importance due to the health problems they can cause to be consumed by human beings. In this study, the Laser-Induced Plasma Spectroscopy (LIBS) technique is evaluated as an alternative method to identify Cu in Crassostrea virginica oysters’ tissue. It focuses on the characterization of oysters caught a natural bank and the identification of different Cu concentrations. To carry out experimentation, oyster samples were collected in autumn (October 2017) and spring (may 2018) from San Andres Lagoon, Aldama, Tamaulipas. A single pulse Nd:YAG laser (1064 nm) was used, and tissue was contaminated with 0, 2, 10, 20, 50, and 100 μg/g of Cu. In tissue were identified atomic lines for Ca, Cr, mg, mn, Na, N, O, and H. However, the intensities of emission lines for autumn samples were greater than spring samples. Cu emission lines at 324.6, 327.1, 510.3, 515.1, and 521.5 nm were found for contaminated pills. The intensity of emission lines showed a linear increase with the concentration;whereby, they can be used as calibration curves to quantify Cu concentrations in oyster tissue.

关键词： LIBS Crassostrea virginica Heavy metals

Ischemic Tolerance in Uremic Rabbits

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World Journal of Cardiovascular Diseases 2015年第12期5卷 351-360页

作者： John G. Kingma Guylaine Sénéchal Jacques R. Rouleau Iris Kingma Faculté de médecine Pavillon Ferdinand Vandry Avenue de la Médecine Université Laval Québec Québec Canada

Background: Cardiac complications after myocardial infarction are believed to be worse in the presence of comorbidities;we tested whether experimentally induced prolonged uremia exacer-bated myocardial necrosis in a rabbit preparation of ischemia-reperfusion injury. In addition, we examined if treatment with an angiotensin converting enzyme inhibitor (Enalapril, ENA, 3 mg/Kg, IV) could reduce post-ischemic myocardial damage. methods: Prolonged uremia was induced by a two-stage subtotal nephrectomy and confirmed by marked increases in serum creatinine and urea levels;after 5 weeks, four groups of rabbits were exposed to 45-min acute coronary occlusion followed by 180-min reperfusion. In treated animals, ENA was administered 5-min before onset of coronary reperfusion. All data from uremic animals were compared with time-matched controls. Results: Cardiac hemodynamics was similar for all groups during the development of kidney failure;heart rate in uremic rabbits was significantly lower for the duration of ischemia-reperfusion. In this animal model, the absence of coronary collateral circulation provides a stable ischemic substrate for evaluation of cellular necrosis. Infarct size (expressed as percent risk zone size) was: control, 48 ± 16;uremia, 36 ± 5;control + ENA, 51 ± 19;and uremia + ENA, 41 ± 16;risk zone size was similar for all animals. Conclusion: The present findings are inconsistent with the view that post-ischemic cardiac injury is greater in animals with pre-existent uremia. In addition, we were unable to show a significant beneficial effect with an angiotensin converting enzyme inhibitor on infarct size in either control or uremic rabbits. It remains to be proven in animal models with comorbidities such as manifest kidney disease that ischemic tolerance can be substantially reduced by either pharmacologic or non-pharmacologic interventions.

关键词： myocardial Infarct Size Ischemia Reperfusion Uremia

眼外皮脂腺癌及皮脂腺瘤的又一尚未被认识的特殊表现:皮脂腺肿瘤类癌样表现

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世界核心医学期刊文摘（皮肤病学分册） 2005年第8期1卷 44-45页

作者： Kazakov D.V. Kutzner H. Rutten A. m. mi- chal 罗素菊 Dr.Sikl' s Department of Pathology Charles University Medical Faculty Hospital Alej Svobody 8O 304 60 Pilsen Czech Republic

This report emphasizes a carcinoid- like pattern, a previously unrecognized feature in cutaneous sebaceous neoplasms. We report 7 patients with sebaceous tumors in which neoplastic cells were arranged in a trabecular and ribbon- like pattern or formed rosettes/pseudorosettes. The cases included 6 men and 1 woman, with their ages at the diagnosis ranging from 43 to 87 years (median age, 59). All patients presented with a solitary lesion. Locations were the scalp (n=6) and forearm (n=1). The carcinoid- like arrangement of neoplastic cells was the sole pattern in 4 cases, and in 3 cases the so- called labyrinthine/sinusoidal and/or rippled patterns were seen in addition. Sebaceous differentiation in the form of mature sebocytes varied from almost none to approximately 10% . Although the neoplasm appeared benign architecturally, the presence of cytologic atypia qualified 2 tumors as low- grade carcinomas. Four lesions represented sebaceomas, and in 1 case microscopic delineation between a carcinoma and sebaceoma was difficult. No neuroendocrine differentiation was demonstrated immunohistochemically, histochemically, and ultrastructurally. Electron microscopic examination performed in 1 case of carcinoma revealed lipid vacuoles in a minority of cells. There were no membrane- bound neuroendocrine granules. Rare cells contained peculiar large helioid inclusions. We conclude that the carcinoid- like pattern is another distinctive pattern indicative of sebaceous neoplasms. This pattern seems to be closely relatedtotherippledandlabyrinthine/sinusoidalpatterns,asexemplified by our cases, in which these arrangements sometimes occurred simultaneously.

关键词：皮脂腺癌皮脂腺瘤皮脂腺肿瘤类癌皮脂腺细胞电子显微镜检查神经内分泌颗粒免疫组织化学超微结构检查大螺旋

泰国Khao-I-Dang柬埔寨难民痰涂片阳性结核病治疗结果的10年评价

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国际结核病与肺部疾病杂志 1995年第1期 23-25页

作者： P.Sukrakanchana-Trikham X.Puéchal J.Rigal H.L.Rieder 马同倞 médecins sans Frontières Tuberculosis Programme Khao-I-DangPrachinburiThailandformerly Thai/Swiss Red Cross Tuberculosis ProgrammeKhao-I-DangPrachinburiThailand médecins sans Frontières Khao-I-DangPrachinburiThailand médécins Sans Frontières ParisFrance Federal Office of Public Health Switzerland and International Union Against Tuberculosis and Lung DiseaseParisFranceformerly Thai/Swiss Red Cross Tuberculosis ProgrammeKhao-I-DangPrachinburiThailand

对因战争而逃离原居住地的人群实施结核病控制、保证病人能坚持长时间治疗是十分困难的。在Khao-I-Dang柬埔寨难民营选用全程直接监视下每日用药6个月治疗方法以解决这一问题。1981-1990年间共收入929名痰涂片阳性结核病人中,5％死亡,7... 详细信息

对因战争而逃离原居住地的人群实施结核病控制、保证病人能坚持长时间治疗是十分困难的。在Khao-I-Dang柬埔寨难民营选用全程直接监视下每日用药6个月治疗方法以解决这一问题。1981-1990年间共收入929名痰涂片阳性结核病人中,5％死亡,75.5％完成了治疗,98％以上坚持逐日用药者达到细菌学治愈,无细菌学失败,19.2％转移至其它难民营,保证在该地继续治疗,逃避治疗者仅0.4％。这些数据显示,对此难民营实施的结核病控制措施,在一个高流动人群中切断结核病传播环节而且大幅度降低不必要的发病与死亡,是十分有效的。

关键词：痰涂片阳性细菌学结核病治疗柬埔寨人 tuberculosis 结核病控制难民营化学治疗结核病人治疗转归

Parameters for Cold Collisions of Lithium and Caesium Atoms

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Chinese Physics Letters 2011年第6期28卷 56-58页

作者： Jamieson m.J Ouerdane H School of Computing Science University of GlasgowGlasgow G128QQUK mediterranean Institute of Fundamental Physics Via Appia Nuova 3100040 MarinoRomeItaly CNRT matériaux UmS CNRS 3318 6 Boulevard Maréchal Juin14050 Caen CedexFrance

We calculate the s-wave scattering length and effective range and the p-wave scattering volume for 7Li atoms interacting with 133Cs atoms via the X1Σ+molecular *** length and volume are found by fitting the log-derivative of the zero energy wave function evaluated at short range to a long range expression that accounts for the leading van der Waals dispersion potential and then incorporating the remaining long range dispersion contributions to first *** effective range is evaluated from a quadrature *** calculated parameters are checked from the zero energy limits of the scattering phase *** comment on ill-conditioning in the calculated s-wave scattering length.

关键词： potential dispersion checked

Computational aerodynamic analysis on perimeter reinforced(PR)-compliant wing

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Chinese Journal of Aeronautics 2013年第5期26卷 1093-1105页

作者： N.I.Ismail A.H.Zulkifli m.Z.Abdullah m.Hisyam Basri Norazharuddin Shah Abdullah Faculty of mechanical Engineering Universiti Teknologi MARA40450 Shah AlamSelangorMalaysia School of mechanical Engineering Universiti Sains MalaysiaEngineering Campus14300 Nibong TebalPenangMalaysia School of materials and mineral Resources Engineering Universiti Sains MalaysiaEngineering Campus14300 Nibong TebalPenangMalaysia

Abstract Implementing the morphing technique on a micro air vehicle （mAV） wing is a very chal- lenging task, due to the mAWs wing size limitation and the complex morphing mechanism. As a result, understanding aerodynamic characteristics and flow configurations, subject to wing structure deformation of a morphing wing mAV has remained obstructed. Thus, this paper presents the investigation of structural deformation, aerodynamics performance and flow formation on a pro- posed twist morphing mAV wing design named perimeter reinforced （PR）-compliant wing. The numerical simulation of two-way fluid structure interaction （FSI） investigation consist of a quasi- static aeroelastic structural analysis coupled with 3D incompressible Reynolds-averaged Navier- Stokes and shear-stress-transport （RANS-SST） solver utilized throughout this study. Verification of numerical method on a rigid rectangular wing achieves a good correlation with available exper- imental results. A comparative aeroelastic study between PR-compliant to PR and rigid wing per- formance is organized to elucidate the morphing wing performances. Structural deformation results show that PR-compliant wing is able to alter the wing＇s geometric twist characteristic, which has directly influenced both the overall aerodynamic performance and flow structure behavior. Despite the superior lift performance result, PR-compliant wing also suffers from massive drag penalty, which has consequently affected the wing efficiency in general. Based on vortices investigation, the results reveal the connection between these aerodynamic performances with vortices formation on PR-comoliant wing.

关键词： Aerodynamics Aeroelasticity Fluid structure interaction micro air vehicle (mAV) morphing wing

Rethinking the architecture design of data center networks

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Frontiers of Computer Science 2012年第5期6卷 596-603页

作者： Kaishun WU Jiang XIAO Lionel m. NI National Engineering Research Center of Digital Life State-Province Joint Laboratory of Digital Home Interactive Applications School of Physics and Engineering Sun Yat-sen University Guangzhou 510006 China Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong China

In the rising tide of the Internet of things, more and more things in the world are connected to the Internet. Recently, data have kept growing at a rate more than four times of that expected in moore＇s law. This explosion of data comes from various sources such as mobile phones, video cameras and sensor networks, which often present multidi- mensional characteristics. The huge amount of data brings many challenges on the management, transportation, and pro- cessing IT infrastructures. To address these challenges, the state-of-art large scale data center networks have begun to provide cloud services that are increasingly prevalent. How- ever, how to build a good data center remains an open chal- lenge. Concurrently, the architecture design, which signifi- cantly affects the total performance, is of great research inter- est. This paper surveys advances in data center network de- sign. In this paper we first introduce the upcoming trends in the data center industry. Then we review some popular design principles for today＇s data center network architectures. In the third part, we present some up-to-date data center frame- works and make a comprehensive comparison of them. Dur- ing the comparison, we observe that there is no so-called op- timal data center and the design should be different referring to the data placement, replication, processing, and query pro- cessing. After that, several existing challenges and limitations are discussed. According to these observations, we point out some possible future research directions.

关键词： data center networks switch-based networks,direct networks hybrid networks

Bioprocessing of underutilized Artocarpus altilis fruit to bioethanol by Saccharomyces cerevisiae:A fermentation condition improvement study

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生物质资源与工程(英文) 2023年第2期8卷 125-135页

作者： Eriola Betiku Ebenezer O Olatoye Lekan m.Latinwo Department of Biological Sciences Florida Agricultural and Mechanical UniversityTallahassee32307USA Biochemical Engineering Laboratory Department of Chemical EngineeringObafemi Awolowo UniversityIle-Ife220005Nigeria

Raw materials availability needed for commercial bioethanol production is one of the chal-lenges against its global *** rich,cheap,underused,and readily available starch sources for bioethanol production could help address the ***,this current study inves-tigated the bioconversion of underutilized Artocarpus altilis(breadfruit)starch to bioethanol using Saccharomyces *** effects of the essential fermentation conditions(fermentation time,breadfruit starch hydrolysate(BSH)concentration,pH,and inoculum size)and their interactions on bioethanol production were *** central composite design was used to generate twenty-one experiments conducted under batch fermentation conditions in the *** breadfruit starch hydrolysis led to a BSH concentration of 108.9 g/L under a starch concentration of 122 g/L,microwave output of 720 W,and an incubation time of 6 *** the fermentation of BSH,maximum bioethanol production of 4.99%(V)was reached under the cultivation conditions of BSH concentration of 80 g/L,medium pH of 4.7,inoculum size of 2%(V),and fermentation time of 20.41 *** for pH,the impact of each parameter on the bioethanol production was in this order:BSH concentration,inoculum size,and fermentation *** for the interactions amongst the parameters,the impact is in this order:BSH concentration and inoculum size;BSH concentration and fermentation time;and fermentation time and inoculum *** results of this study indicated breadfruit starch could be hydrolyzed using acid hydrolysis and microwave irradiation in a relatively short *** BSH obtained could potentially add to other substrates for bioethanol production.

关键词： Starch Hydrolysis Yeast Fermentation Bioethanol Biofuel Optimization

Novel multimodal Biometric Feature Extraction for Precise Human Identification

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Intelligent Automation & Soft Computing 2023年第5期36卷 1349-1363页

作者： J.Vasavi m.S.Abirami Department of Computer Science and Engineering SRM Institute of Science and TechnologyKattankulathur603203Tamil NaduIndia Department of Computational Intelligence SRM Institute of Science and TechnologyKattankulathur603203Tamil NaduIndia

In recent years,biometric sensors are applicable for identifying impor-tant individual information and accessing the control using various identiﬁers by including the characteristics like aﬁngerprint,palm print,iris recognition,and so ***,the precise identiﬁcation of human features is still physically chal-lenging in humans during their lifetime resulting in a variance in their appearance or *** response to these challenges,a novel multimodal Biometric Feature Extraction(mBFE)model is proposed to extract the features from the noisy sen-sor data using a modiﬁed Ranking-based Deep Convolution Neural Network(RDCNN).The proposed mBFE model enables the feature extraction from differ-ent biometric images that includes iris,palm print,and lip,where the images are preprocessed initially for further *** extracted features are validated after optimal extraction by the RDCNN by splitting the datasets to train the fea-ture extraction model and then testing the model with different sets of input *** simulation is performed in matlab to test the efﬁcacy of the modal over multi-modal datasets and the simulation result shows that the proposed meth-od achieves increased accuracy,precision,recall,and F1 score than the existing deep learning feature extraction *** performance improvement of the mBFE Algorithm technique in terms of accuracy,precision,recall,and F1 score is attained by 0.126%,0.152%,0.184%,and 0.38%with existing Back Propaga-tion Neural Network(BPNN),Human Identiﬁcation Using Wavelet Transform(HIUWT),Segmentation methodology for Non-cooperative Recognition(SmNR),Daugman Iris Localization Algorithm(DILA)feature extraction techni-ques respectively.

关键词： multimodalbiometric feature extraction ranking-baseddeepconvolution neural network noisy sensor data palm prints lip biometric iris recognition