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Diagnosis of Acute Appendicitis in Sub-Saharan Africa

Open Journal of Medical Imaging 2018年第1期8卷 1-9页

作者： nina-Astrid Nde Ouedraogo Souleymane Ouedraogo bénilde Marie Ange Tiemtore Kambou Adams Ouedraogo Adama Sanou Service de Radiodiagnostic H&ocirc pital de District de bogodogo Ouagadougou Burkina Faso Unité de Formation et de Recherche des Sciences de la Santé Université Ouaga 1 Pr Joseph Ki-Zerbo Ouagadougou Burkina Faso Service de Chirurgie Générale Centre Hospitalier Universitaire Blaise Compaore Ouagadougou Burkina Faso

Objective: The aim of our study was to propose a solution for rationalizing requests for ultrasound examination and CT scan in suspected acute appendicitis, based on use of the Alvarado score. Patients and Methods: We included in our study all patients consulting for pain of the right iliac fossa, whatever their age and sex, who had been diagnosed with acute appendicitis and who had undergone appendectomy. We used the Alvarado scoring system, based on clinical items and laboratory measurements, to diagnose appendicitis. Results: One hundred eleven patients, of whom 77 were men (69.4%) and 34 were women (30.6%), with a sex ratio of 2:2.6, were included. Mean age was 31.29 ± 1.31 years, with a range of 1 to 81 years. The diagnosis of definite appendicitis was established in 54 patients (48.6%). Abdominal ultrasound examination had been performed in 80 patients (72.1%). It established a diagnosis of appendicitis in 69 patients (86.2%), while in 11 patients (13.8%) the appendix was described as normal or was not visualized. Conclusion: Our study demonstrated good agreement between peroperative diagnosis and the result of the Alvarado score applied a posteriori. Ultrasound was not always contributory to the diagnosis of acute appendicitis. It could be reserved for patients whose clinical and laboratory score indicated that appendicitis was unlikely.

关键词： Acute Appendicitis Diagnosis Ultrasound Examination burkina Faso Alvarado Score

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Global Energetics of Solar Powerful Events on 2017 September 6

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Research in Astronomy and Astrophysics 2023年第9期23卷 180-193页

作者： Dong Li Alexander Warmuth Jincheng Wang Haisheng Zhao Lei Lu Qingmin Zhang nina Dresing Rami Vainio Christian Palmroos Miikka Paassilta Annamaria Fedeli Marie Dominique Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China State Key Laboratory of Space Weather Chinese Academy of SciencesBeijing 100190China Leibniz-Institut fur Astrophysik Potsdam(AIP) An der Sternwarte 16D-14482 PotsdamGermany Yunnan Observatories Chinese Academyof Sciences.Kunming 650216China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsCASBeijing 00049China Department of Physics and Astronomy University of TurkuTurku 20014Finland Solar-Terrestrial Centre of Excellence/SIDC Royal Observatory of Belgium3 Avenue CirculaireB-1180 UccleBelgium

Solar flares and coronal mass ejections(CMEs)are thought to be the most powerful events on the *** can release energy as high as~10^(32)erg in tens of minutes,and also can release solar energetic particles(SEPs)into interplanetary *** explore global energy budgets of solar major eruptions that occurred on 2017 September 6,including the energy partition of a powerful solar flare,and the energy budget of the accompanying CME and *** the wavelength range shortward of~222 nm,a major contribution of the flare radiated energy is in the soft X-ray(SXR)0.1-7 nm *** flare energy radiated at wavelengths of Lyαand mid-ultraviolet is larger than that radiated in the extreme ultraviolet wavelengths,but it is much less than that radiated in the SxR *** total flare radiated energy could be comparable to the thermal and nonthermal *** energies carried by the major flare and its accompanying CME are roughly equal,and they are both powered by the magnetic free energy in the NOAA AR ***,the CME is efficient in accelerating SEPs,and the prompt component(whether it comes from the solar flare or the CME)contributes only a negligible fraction.

关键词： Sun flares-Sun magnetic fields-Sun coronal mass ejections(CMEs)

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Joint Damage Accelerating Properties of Neutrophils

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Open Journal of Rheumatology and Autoimmune Diseases 2014年第2期4卷 106-113页

作者： Viktoriya Milanova nina Ivanovska Petya Dimitrova Department of Immunology Institute of Microbiology Bulgarian Academy of Sciences Sofia Bulgaria

Neutrophils are innate immune cells involved in the initial inflammatory response and in the pathogenesis of rheumatoid arthritis (RA), an inflammatory joint disease. They produce cytokines, chemokines, proinflammatory mediators and secrete enzymes causing a direct destruction of cartilage and bone. Herein we investigated the ability of neutrophils to express the receptor activator of nuclear factor kappa-b ligand (RANKL) and to interfere with maturation of late pre-osteoclasts. The distribution of bone marrow (bM) Ly6G+ cells expressing RANKL was evaluated after bM cell dye labelling and transfer into zymosan-injected SCID recipient mice. Specific tartrate-resistant acid phosphatase (TRAP) staining was used to determine the number of multinucleated mature osteoclasts in the co-cultures of purified blood neutrophils with preosteoclasts. Ly6 G+ bM cells migrated extensively in synovial fluid and spleen of recipient zymosan-injected SCID mice. Labelled neutrophils have higher RANKL expression in synovial fluid unlike in spleen indicating that they obtained specific phenotype during their migration to the synovial fluid. blood neutrophils increased the number of multinucleated mature osteoclasts in vitro. This effect was elicited by the pretreatment of neutrophils with interleukin (IL)-17. In summary, our study showed neutrophils’s properties to accelerate joint damage via RANKL and interactions with osteoclasts.

关键词： Neutrophils RANKL Cell Transfer Zymosan Osteoclasts

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A machine vision tool for facilitating the optimization of large-area perovskite photovoltaics

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npj Computational Materials 2021年第1期7卷 1764-1773页

作者： nina Taherimakhsousi Mathilde Fievez benjamin P.MacLeod Edward P.booker Emmanuelle Fayard Muriel Matheron Matthieu Manceau Stéphane Cros Solenn berson Curtis P.berlinguette Department of Chemistry The University of British Columbia2036 Main MallVancouverBC V6T 1Z1Canada Univ.Grenoble Alpes CEALITENCampus Ines73375 Le Bourget du LacFrance Stewart blusson Quantum Matter Institute The University of British Columbia2355 East MallVancouverBC V6T 1Z4Canada School of Electrical Engineering and Computer Science University of Ottawa800 King Edward AvenueOttawaON K1N 6N5USA Department of Chemical&biological Engineering The University of British Columbia2360 East MallVancouverBC V6T 1Z3Canada Canadian Institute for Advanced Research(CIFAR) MaRS Innovation Centre661 University Avenue Suite 505M5G 1M1 TorontoONCanada

We report a fast,reliable and non-destructive method for quantifying the homogeneity of perovskite thin films over large areas using machine *** adapt existing machine vision algorithms to spatially quantify multiple perovskite film properties(substrate coverage,film thickness,defect density)with pixel resolution from pictures of 25 cm2 *** machine vision tool—called PerovskiteVision—can be combined with an optical model to predict photovoltaic cell and module current density from the perovskite film *** use the measured film properties and predicted device current density to identify a posteriori the process conditions that simultaneously maximize the device performance and the manufacturing throughput for large-area perovskite deposition using gas-knife assisted slot-die *** thus facilitates the transfer of a new deposition process to large-scale photovoltaic module *** work shows how machine vision can accelerate slow characterization steps essential for the multi-objective optimization of thin film deposition processes.

关键词： optimization perovskite film

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Sociability and pair-bonding in gerbils: a comparative experimental study

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Current Zoology 2019年第4期65卷 363-373页

作者： Andrey V. TCHAbOVSKY Ludmila E. SAVINETSKAYA Natalia L. OVCHINNIKOVA Alexandra SAFONOVA Olga N. ILCHENKO Svetlana R. SAPOZHNIKOVA nina A. VASILIEVA Department of Vertebrate Zoology A.N. Severtsov Institute of Ecology and Evolution Moscow Russia Laboratory for Population Ecology Lomonosov Moscow State University Russia Moscow Zoo Russia

In a study of gerbils with contrasting social and mating systems (group-living monogamous Mongolian gerbil Meriones unguiculatus, solitary nonterritorial promiscuous midday jird M. meridianus, and solitary territorial promiscuous pale gerbil Gerbillus perpallidus), we employed part ner pref ere nee tests (PPTs) to assess among-species variation in sociability and pair-bonding patterns and tested whether the nature of contact between individuals: direct contact (DC) versus nondirect contact (NDC) affected our results. We measured male pref ere nces as the time: 1) spe nt alone, 2) with familiar (partner), and 3) unfamiliar (stranger) female in the 3-chambered apparatus. Gerbil species differed strongly in sociability and male partner preferences. The time spent alone was a reliable indicator of species sociability indepe ndent of the nature of con tact, whereas the pattern and level of betwee n-species differe nces in male partner preferences depended on con tact type: DC PPTs, un like NDC-tests, discriminated well betwee n monogamous and promiscuous species. In the DC-tests, stranger-directed aggression and stranger avoidanee were observed both in the highly social monogamous M. unguiculatus and the solitary territorial promiscuous G. perpallidus, but not in the non territorial promiscuous M. meridianus. In M. unguiculatus, stranger avoidanee in the DC-tests increased the time spent with the partner, thus providing evidence of a partner preference that was not found in the NDC-tests, whereas in G. perpallidus, stran ger avoidance in creased the time spe nt alone. This first comparative experimental study of partner prefere nces in gerbils provides new in sights into the in terspecific variation in gerbil sociality and mating systems and sheds light on behavioral mechanisms un derlyi ng social fidelity and pair-b on ding.

关键词： gerbils mating systems partner preference test partner fidelity social systems stranger-directed aggression

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Classification of Raw Sources of Rare-Earth Elements in Kazakhstan

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材料科学与工程（中英文b版） 2013年第5期3卷 326-330页

作者： Madali Naymanbayev nina Lokhova Zhazira baltabekova JSC "Center of Earth Sciences Metallurgy and Ore Beneficiation " Almaty 050010 Kazakhstan

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Characterization of Fiber Dust Resulting from Recycling of Carbon Fiber-Reinforced Thermoplastics (CFRP) and Their Cell Toxicity

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Journal of Materials Science and Chemical Engineering 2022年第7期10卷 1-16页

作者： Lisa Tölle Christian Monsé nina Rosenkranz Natalia Haibel Dirk Walter Jürgen bünger Matthias Hopp Götz A. Westphal Kunststofftechnik Paderborn University Paderborn Paderborn Germany Institute for Prevention and Occupational Medicine of the German Social Accident Insurance Institute of the Ruhr University Bochum (IPA) Deutsche Gesetzliche Unfallversicherung e.V. (DGUV) Bochum Germany Laboratories of Chemistry and Physics Institute of Occupational and Social Medicine Justus-Liebig-University Giessen Giessen Germany Institute of Inorganic and Analytical Chemistry Justus-Liebig-University Giessen Giessen Germany

Carbon fiber-reinforced thermoplastics (CFRP) have excellent specific strength and rigidity, which has made them a popular material for lightweight construction. The growing demand for fiber-reinforced plastics (FRP) leads to the problem of the sustainable handling of FRP at the end of their life cycle. The aim of the research project was to gain knowledge about the shredding of FRP concerning the optimal machine and process design of the shredding process and the possible formation of harmful, inhalable dust fractions and WHO fibers. Toxicity should be investigated at the cellular level. The investigated shredding parameters influence the amount and length of fiber dust produced, both when shredding with a cutting mill and when shredding with a single-shaft shredder. In all investigations, an increasing rotational speed leads to an increase in the fiber dust mass or the fiber concentration. The proportion of short, respirable fibers increases, but raising the speed does not lead to a further, significant shortening of the fibers. A reduction in feedstock size leads to a slightly reduced mass of fiber dust in the ground material. A reduction in the screen size also leads to an increase in fiber dust mass and concentration. There was no recognizable cytotoxicity in the relevant concentration range up to 500 μg/cm2 and no significant induction of cell migration. This indicates minor flammable effects of the dust formed after inhalation. The biological data indicate that the WHO fibers produced by shredding are only a minor health hazard. Formally, the detected carbon fiber (CF) fragments meet the fiber definition of the legislator. However, carbon fibers currently have no specific limit value.

关键词： Carbon Fibers Fiber Dust Recycling Toxicity

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Quantifying defects in thin films using machine vision

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npj Computational Materials 2020年第1期6卷 737-742页

作者： nina Taherimakhsousi benjamin P.MacLeod Fraser G.L.Parlane Thomas D.Morrissey Edward P.booker Kevan E.Dettelbach Curtis P.berlinguette Department of Chemistry The University of British Columbia2036 Main MallVancouverBC V6T 1Z1Canada Stewart blusson Quantum Matter Institute The University of British Columbia2355 East MallVancouverBC V6T 1Z4Canada Department of Chemical&biological Engineering The University of British Columbia2360 East MallVancouverBC V6T 1Z3Canada Canadian Institute for Advanced Research(CIFAR) MaRS Innovation Centre661 University Ave.Suite 505TorontoON M5G 1M1Canada

The sensitivity of thin-film materials and devices to defects motivates extensive research into the optimization of film *** research could be accelerated by automated experiments that characterize the response of film morphology to synthesis *** imaging can resolve morphological defects in thin films and is readily integrated into automated experiments but the large volumes of images produced by such systems require automated *** approaches to automatically analyzing film morphologies in optical images require application-specific customization by software experts and are not robust to changes in image content or imaging ***,we present a versatile convolutional neural network(CNN)for thin-film image analysis which can identify and quantify the extent of a variety of defects and is applicable to multiple materials and imaging *** CNN is readily adapted to new thin-film image analysis tasks and will facilitate the use of imaging in automated thin-film research systems.

关键词： film thin image

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A Study on brand Communication Strategies of Gaggenau China——Embarking Upon the Territory of b2C

A Study on Brand Communication Strategies of Gaggenau China...

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作者： nina N. Nguyen 上海交通大学

学位级别：硕士

Thesis Title: A Study on brand Communication Strategies of Gaggenau China: Embarking Upon the Territory of b2CFigure 1: Thesis overviewbackground information: Gaggenau is a kitchen appliances company,which was established in 1683 in Germany and acquired by bSH group in *** company entered the Chinese market in 2008 and established showrooms in Shanghai（2008）,beijing（2013）and Guangzhou（2015）.Currently,Gaggenau′s business model is mainly based on b2 b ***,the company is considering the possibility of penetrating the retail market in the *** company provides professional and imported kitchen appliances to high-end consumers,as they perceive themselves as a luxury ***′s brand profile consists of three values: authentic,extraordinary and ***,the words craftsmanship,quality,innovations and design reflects Gaggenau′s slogan "The difference is Gaggenau".These four elements lead consumers to the ultimate Gaggenau ***: brand communication towards consumers is important for companies to gain success,as there are fierce competition and similar products in the ***,distinguishing oneself from the other brands is essential because consumers possess the power of selective attention,a term used to describe that consumers determine what to pay attention to.A company with an aligned internal and external branding can obtain a powerful brand promise ***,in many cases,external branding is more emphasized compared to internal ***,the brand experience might not fulfill consumers’ expectation because the branding is not *** the possibility of Gaggenau investigating the opportunity to penetrate the retail market in China,it might be wise to look into Gaggenau′s internal and external branding and explore b2 C consumers’ brand perception and brand equity towards the brand *** main scope is to investigate Gaggenau′s ability to deliver their brand promise to their Ch

关键词：奢侈品牌中国市场高端消费者传播策略

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Pearson's administrative medical assisting /

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2007年

作者： beaman nina.

Includes index.

ISBN: (纸本)0132209047

Includes index.

关键词： Medical assistants

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