bluuebunny/crossref_metadata_2025_split huggingface dataset:
ESTUDO PROSPECTIVO DA APLICAÇÃO DE DISSIPADORES METÁLICOS NO CONTROLE DE VIBRAÇÕES NA CONSTRUÇÃO CIVIL
Authors: Malveira Sandra , Bando Cristina Mieko Costa , Carvalho Debora Mendes , Ferreira Camila Lisdalia Dantas , Nascimento Paulo Gustavo Bardoni Dantas , Ghesti Grace Ferreira , Martin Adriana Regina 
Published: February 2018

<p class="CorpoA">Os dispositivos metálicos utilizados para controle de vibrações são empregados para absorver vibrações causadas por intempéries como: abalos sísmicos e grandes rajadas de ventos na construção civil com objetivo de aumentar a eficiência das edificações. Diante do exposto, um estudo prospectivo foi realizado a fim de mapear o cenário tecnológico o qual se insere a temática. Os resultados da pesquisa foram suficientes para concluir que a tecnologia apresenta maior aplicabilidade em países do continente asiático, onde a probabilidade de ocorrer intempéries é maior. Nesse contexto, o maior número de patentes e artigos científicos nessa temática ocorre na localidade específica, assim como o Brasil não apresenta produção expressiva. </p>
FERRAMENTAS DE GESTÃO DE PROPRIEDADE INTELECTUAL NOS NÚCLEOS DE INOVAÇÃO TECNOLÓGICA E EMPRESAS DO BRASIL
Authors: Oliveira Elton Henrique Alves de , Santos João Paulo Lima 
Published: February 2018

<p>O presente trabalho objetiva a realização de um levantamento prospectivo para análise quantitativa do desenvolvimento de ferramentas para gestão de propriedade intelectual para uso nos Núcleos de Inovação Tecnológica – NITs e empresas, particularmente através de programas de computador. O uso de ferramentas de gestão de propriedade intelectual pode contribuir para agregar competências nos setores responsáveis pela gestão da inovação nas instituições, colaborando para amenizar o efeito do déficit de recursos humanos que, nos casos dos Núcleos de Inovação Tecnológica – NITs, de acordo com o FORMICT 2015, tem apenas 41,3% dos servidores com dedicação integral em ICTs públicas e 41,7% em ICTs privadas.</p>
AVALIAÇÃO TECNOLÓGICA DE DISPOSITIVO DE MONITORAMENTO DE MOVIMENTAÇÃO CORPORAL
Authors: Montilha Herika Fernanda Dantas , Couto Saldanha Daniela Soares , Santos Bruna De Oliveira , Ferreira Camila Lisdalia Dantas , Malveira Sandra , Borges Polyana De Almeida , Barboni Dantas Paulo Gustavo , Ghesti Grace Ferreira 
Published: February 2018

<span>Anualmente surgem milhares de ideias e conceitos inovadores em todo o mundo, considerando o grande avanço das tecnologias modernas, para que estas se tornem inovadoras, elas precisam acompanhar as tendências de mercado. Neste trabalho, pretende-se analisar o potencial tecnológico da patente “Dispositivo de Avaliação e Movimento Corporal” por meio da prospecção tecnológica em bases de patentes e periódicos utilizando termos selecionados. Os Estados Unidos e a China lideram o <em>ranking</em> de publicações em artigos e depósitos de patentes. Foram constatadas 1.530 patentes e 6.461 artigos em periódicos de relevância internacional até 2016. Através disso, foi possível observar que os desenvolvimentos na área encontram-se em fase embrionária, sendo necessário mais pesquisas e desenvolvimento tecnológico para o setor. Contudo, a análise SWOT e a pesquisa de mercado mostrou o potencial competitivo desta tecnologia no país sendo possível a negociação de contratos de transferência de tecnologia.</span>
ESTUDO PROSPECTIVO DA MORINGA NA INDÚSTRIA DE COSMÉTICOS
Authors: Lopes Almeida Cláudia Beatriz , Conde e Sá Carolina , Dantas Carvalho Rodrigo César , Silva de Almeida Eliana 
Published: February 2018

<p>A Moringa oleifera é uma planta de fácil cultivo, que possui alto teor proteico e quase todas as suas partes podem ser aproveitadas para diversos usos, como: tratamento de água, alimentação de animais e na produção de medicamentos.Este trabalho consiste em realizar uma prospecção tecnológica acerca da Moringa; esta será realizada a partir de uma pesquisa mercadológica em sites de <em>e-commerce</em> focados na área de Beleza e em bases de dados de registro de patentes, com enfoque na indústria cosmética. Para este estudo utilizou-se as bases de patentes do Instituto Nacional de Propriedade Industrial, <em> Espacenet </em> e <em>Derwent Innovation Index</em>. Conclui-se que, apesar da grande oferta de produtos cosméticos nacionais com Moringa, no Brasil as patentes depositadas são voltadas, em sua maioria, ao tratamento de água, enquanto nas bases internacionais compreendem as áreas com finalidades médicas, odontológicas ou higiênicas, que inclui cosméticos. </p>
Status of NeQuick G After the Solar Maximum of Cycle 24
Authors: Orus Perez R. , Parro‐Jimenez J. M. , Prieto‐Cerdeira R. 
Published: February 2018

AbstractThe solar cycle 24 will not be registered as the most intense of the last cycles. In fact, its intensity is roughly half of the previous cycle and the ionospheric effects experienced in this cycle have been far milder than originally expected, despite having several major ionospheric storms in this period, as the so‐called St. Patrick's Day's ionospheric storm. On the other hand, in this same period of time, the Galileo system has started the deployment phase and it started the In‐Orbit‐Validation campaign on 2013 with the first four full operational satellites, following the launch of a number of additional satellites allowing the declaration of Initial Services in December 2016 and targeting the Full Operational Capability by 2020. Thus, during this period of time, Galileo has been broadcasting the 3 Az coefficients needed to use the NeQuick G for correcting the ionospheric delay for single‐frequency users. In this work, the full analysis of the performance of the NeQuick G for the last solar cycle will be presented along with the detailed analysis of some of the most relevant ionospheric storms occurred during the very same period. In general, the NeQuick G presents around 50 cm better root mean square than the Global Positioning System broadcast model for all the period of study. As an internal measure of the goodness of the NeQuick G, the percentage of slant total electron content inside of target Galileo specification will also be analyzed.
Phenylzinnverbindungen [MAK Value Documentation in German language, 2018]
Authors: Hartwig A. ,   MAK Commission
Published: February 2018

Abstract

The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated the maximum concentration at the workplace (MAK value) and the Pregnancy Risk Group of phenyltin compounds [e. g.
76‐87‐9
for triphenyltin hydroxide].

Phenyltin compounds are carcinogenic. Inhalation of 0.3 g triphenyltin hydroxide/m
3
results in haematological and biochemical changes in rats. A concentration of 0.014 mg triphenyltin hydroxide/m
3
shows no effects. A MAK value of 0.002 mg tin/m
3
had been set. This value is now reaffirmed even considering the increased respiratory volume at the workplace (see List of MAK and BAT values, chapters I b and I c). Since a systemic effect is critical, Peak Limitation Category II is retained. The default excursion factor of 2 is confirmed because of the highly cytotoxic effects of phenyltin compounds.

Phenyltin compounds had been classified in Pregnancy Risk Group C because the NAEC for developmental toxicity is 0.09 mg tin/m
3
for rabbits. There is no new data on developmental toxicity. This classification is retained even considering the increased respiratory volume at the workplace.
Reduced Graphene Oxide as a Catalyst Binder: Greatly Enhanced Photoelectrochemical Stability of Cu(In,Ga)Se2 Photocathode for Solar Water Splitting
Authors: Koo Bonhyeong , Byun Segi , Nam Sung‐Wook , Moon Song‐Yi , Kim Suncheul , Park Jeong Young , Ahn Byung Tae , Shin Byungha 
Published: February 2018

AbstractThe photoelectrochemical (PEC) properties of a Cu(In,Ga)Se2 (CIGS) photocathode covered with reduced graphene oxide (rGO) as a catalyst binder for solar‐driven hydrogen evolution are reported. Chemically reduced rGO with various concentrations is deposited as an adhesive interlayer between CIGS/CdS and Pt. PEC characteristics of the CIGS/CdS/rGO/Pt are improved compared to the photocathode without rGO due to enhancement of charge transfer via efficient lateral distribution of photogenerated electrons by conductive rGO to the Pt. More importantly, the introduction of rGO to the CIGS photocathode significantly enhances the PEC stability; in the absence of rGO, a rapid loss of PEC stability is observed in 2.5 h, while the optimal rGO increases the PEC stability of the CIGS photocathode for more than 7 h. Chemical and structural characterizations show that the loss of the Pt catalyst is one of the main reasons for the lack of long‐term PEC stability; the introduction of rGO, which acts as a binder to the Pt catalysts by providing anchoring sites in the rGO, results in complete conservation of the Pt and hence much enhanced stability. Multiple functionality of rGO as an adhesive interlayer, an efficient charge transport layer, a diffusion barrier, and protection layer is demonstrated.
Fast and Accurate Imaging of Lymph Node Metastasis with Multifunctional Near‐Infrared Polymer Dots
Authors: Cao Fengwen , Guo Yixiao , Li Yao , Tang Shiyi , Yang Yidian , Yang Hong , Xiong Liqin 
Published: February 2018

AbstractMetastasis to regional lymph nodes is a significant prognostic indicator for cancer progression. There is a great demand for rapid and accurate diagnosis of metastasis to the lymph nodes. In this work, folate receptor‐targeted trimodal polymer dots are designed for near‐infrared (NIR)/photoacoustic (PA)/magnetic resonance (MR) imaging of lymph node metastasis. Confocal microscopic analyses and flow cytometry show that pulmonary mucosa epithelial cell carcinoma NCI‐H292 with expression of the folate receptor is positive for folate‐functional polymer dots. In vivo and ex vivo NIR imaging results verify that prepared polymer dots show rapid and high uptake in the metastatic lymph nodes, can effectively distinguish metastatic and normal lymph nodes for 1 h postinjection, and have great potential in real‐time imaging‐guided surgery. Furthermore, ten metastatic lymph nodes from the tumor‐bearing mice are detected by NIR imaging via intratumoral injection of polymer dots. Moreover, in vivo PA and MR imaging confirm the enhanced PA and MR signals of polymer dots in the metastatic lymph nodes as well as enlarged lymph nodes in tumor‐bearing mice. The results of this study provide a unique approach using trimodal polymer dots for the rapid and precise diagnosis of lymph node metastasis in vivo.
Advancements and Challenges in Multidomain Multicargo Delivery Vehicles
Authors: Pugliese Eugenia , Coentro João Q. , Zeugolis Dimitrios I. 
Published: February 2018

AbstractReparative and regenerative processes are well‐orchestrated temporal and spatial events that are governed by multiple cells, molecules, signaling pathways, and interactions thereof. Yet again, currently available implantable devices fail largely to recapitulate nature's complexity and sophistication in this regard. Herein, success stories and challenges in the field of layer‐by‐layer, composite, self‐assembly, and core–shell technologies are discussed for the development of multidomain/multicargo delivery vehicles.
A Three‐component Cascade Cyclization to Construct 3‐(2‐Oxopropyl)‐2‐arylisoindolinone Derivatives via Copper‐catalyzed Annulation
Authors: Liu Li , Bai Shu‐Hua , Li Yang , Ding Xiao‐Dan , Liu Qian , Li Jian 
Published: February 2018

AbstractAn efficient synthesis of a variety of poly‐substituted isoindolinone derivatives via copper‐catalyzed three‐component cascade cyclization among 2‐formylbenzonitriles, alkyl aryl ketones/prop‐1‐en‐2‐ylbenzene and diaryliodonium salts is achieved. Various isoindolinone derivatives could be obtained in good to excellent yields. A concise synthesis of dihydroisoindolo[2,1‐a]quinolin‐11(5H)‐ones have been achieved using this method.magnified image
Construction of Isoxazolidin‐5‐ones with a Tetrasubstituted Carbon Center: Enantioselective Conjugate Addition Mediated by Phase‐Transfer Catalysis
Authors: Cadart Timothée , Levacher Vincent , Perrio Stéphane , Brière Jean‐François 
Published: February 2018

AbstractAn efficient enantioselective Michael reaction of readily available α‐substituted N‐Boc isoxazolidin‐5‐ones is described under phase transfer conditions with up to 95:5 er. The organocatalytic process is promoted by a low catalytic loading of a commercially available N‐spiro quaternary ammonium salt. This sequence opens an entry to chiral heterocyclic platforms displaying a β‐amino carbonyl motif with an α‐all‐carbon quaternary stereogenic center. The methodology was also successfully extended to the asymmetric amination reaction using an azodicarboxylate electrophile.magnified image
Mechanical implications of the mandibular coronoid process morphology in Neandertals
Authors: Marom Assaf , Rak Yoel 
Published: February 2018

AbstractObjectivesAmong the diagnostic features of the Neandertal mandible are the broad base of the coronoid process and its straight posterior margin. The adaptive value of these (and other) anatomical features has been linked to the Neandertal's need to cope with a large gape. The present study aims to test this hypothesis with regard to the morphology of the coronoid process.Materials and MethodsThis admittedly simple, intuitive hypothesis was tested here via a comparative finite‐element study of the primitive versus modified state of the coronoid process, using two‐dimensional models of the mandible.ResultsOur simulations demonstrate that a large gape has an unfavorable effect on the primitive state of the coronoid process: the diagonal, almost horizontal, component of the temporalis muscle resultant (relative to the long axis of the coronoid process) bends the process in the sagittal plane. Furthermore, we show that the modification of the coronoid process morphology alone reduces the process' bending in a wide gape increasing the compression to tension ratio.DiscussionThese results provide indirect evidence in support of the hypothesis that the modification of the coronoid process in Neandertals is necessary for enabling their mandible to cope with a large gape.
Dimensions of the medial wall of the prelacrimal recess
Authors: Kashlan Khaled , Craig John 
Published: February 2018

BackgroundAddressing anterior maxillary sinus pathology endoscopically that is inaccessible with an endoscopic modified medial maxillectomy requires either a prelacrimal approach (PLA) or an endoscopic Denker's approach (EDA). The PLA involves removing the medial wall of the prelacrimal recess (PLR), which is the bone between the pyriform aperture (PA) and nasolacrimal duct (NLD), from nasal floor to orbital floor. The PLA preserves the inferior turbinate and NLD, whereas both are sacrificed during an EDA. The purpose of this computed tomography (CT)‐based study was to determine the anteroposterior and superoinferior dimensions of the medial wall of the PLR.MethodsOne hundred thirty‐one triplanar sinus CT scans of patients with various rhinologic diseases, but with intact bony PLR walls, were reviewed to assess dimensions of the medial wall of the PLR. The anteroposterior distances from the PA to the inferior‐most, middle, and superior‐most aspects of the NLD were measured. The height from the nasal floor to orbital floor was also measured. Combining left and right sides, there were 262 measurements.ResultsThe anteroposterior distances between the PA and the NLD were as follows: inferior: mean, 8.4 mm (standard error [SE], 0.2; range, 1.9–14.2); middle: mean, 7.6 mm (SE, 0.2; range, 0–13.6); and superior: mean, 5.5 mm (SE, 2.5; range, 0–11.9). The mean height of the medial wall of the PLR was 26.5 mm (SE, 0.2; range, 18.5–39.9).ConclusionThe anteroposterior and superoinferior dimensions of the medial wall of the PLR are variable, with the anteroposterior dimension being widest inferiorly. Its dimensions should be evaluated preoperatively when considering endoscopic approaches to or through the anterior maxillary sinus.
Nickel‐Catalyzed Umpolung Arylation of Ambiphilic α‐Bromoalkyl Boronic Esters
Authors: Sun Shang‐Zheng , Martin Ruben 
Published: February 2018

AbstractA nickel‐catalyzed reductive arylation of ambiphilic α‐bromoalkyl boronic esters with aryl halides is described. This platform provides an unrecognized opportunity to promote the catalytic umpolung reactivity of ambiphilic reagents with aryl halides, thus unlocking a new cross‐coupling strategy that complements existing methods for the preparation of densely functionalized alkyl‐substituted organometallic reagents from simple and readily accessible precursors.
Stereodivergent Evolution of Artificial Enzymes for the Michael Reaction
Authors: Garrabou Xavier , Macdonald Duncan Stuart , Wicky Basile I. M. , Hilvert Donald 
Published: February 2018

AbstractEnzymes are valuable biocatalysts for asymmetric synthesis due to their exacting stereocontrol. Changing the selectivity of an existing catalyst for new applications is, however, challenging. Here we show that, in contrast, the stereoselectivity of an artificial enzyme created by design and directed evolution is readily tunable. We engineered a promiscuous artificial retro‐aldolase into four stereocomplementary catalysts for the Michael addition of a tertiary carbanion to an unsaturated ketone. Notably, this selectivity is also preserved with alternative Michael nucleophiles. Complete stereodiversification of other designer enzymes should similarly be possible by extension of these approaches.
Rhodium‐Catalyzed Arylation of Cyclopropenes Based on Asymmetric Direct Functionalization of Three‐Membered Carbocycles
Authors: Dian Longyang , Marek Ilan 
Published: February 2018

AbstractA variety of highly diastereo‐ and enantiomerically enriched arylcyclopropanes is obtained through the asymmetric rhodium‐catalyzed arylation reaction of achiral nonfunctionalized cyclopropene derivatives with commercially available aryl boronic acids in the presence of (R,S)‐Josiphos.
Stabilizing and Organizing Bi3Cu4 and Bi7Cu12 Nanoclusters in Two‐Dimensional Metal–Organic Networks
Authors: Yan Linghao , Xia Bowen , Zhang Qiushi , Kuang Guowen , Xu Hu , Liu Jun , Liu Pei Nian , Lin Nian 
Published: February 2018

AbstractMultinuclear heterometallic nanoclusters with controllable stoichiometry and structure are anticipated to possess promising catalytic, magnetic, and optical properties. Heterometallic nanoclusters with precise stoichiometry of Bi3Cu4 and Bi7Cu12 can be stabilized in the scaffold of two‐dimensional metal–organic networks on a Cu(111) surface through on‐surface metallosupramolecular self‐assembly processes. The atomic structures of the nanoclusters were resolved using scanning tunneling microscopy and density functional theory calculations. The nanoclusters feature highly symmetric planar hexagonal shapes and core–shell charge modulation. The clusters are arranged as triangular lattices with a periodicity that can be tuned by choosing molecules of different size. This work shows that on‐surface metallosupramolecular self‐assembly creates unique possibilities for the design and synthesis of multinuclear heterometallic nanoclusters.
Crosslinking assisted fabrication of ultrafine poly(vinyl alcohol)/functionalized graphene electrospun nanofibers for crystal violet adsorption
Authors: Chailek Nirumon , Daranarong Donraporn , Punyodom Winita , Molloy Robert , Worajittiphon Patnarin 
Published: February 2018

ABSTRACTThis article reports the fabrication of water‐stable electrospun mats made from water‐soluble poly(vinyl alcohol) and comprising ultrafine nanofibers for a high surface area to volume ratio as required for the adsorption of crystal violet. Acid‐catalyzed crosslinking is uniquely demonstrated as a facile strategy to improve water stability and, just as importantly, fine‐tune the nanofiber size of the electrospun mats. Amine‐functionalized graphene nanoplatelets are incorporated as an adsorption performance enhancer instead of the more widely reported graphene oxide. The functionalized graphene also facilitates fabrication of the composite electrospun mats by direct mixing of the water‐dispersible graphene with the aqueous polymer solution. The enhanced adsorption performance of the polymer nanocomposite mats is explained in detail at the molecular level, while the adsorption mechanism is supported by adsorption isotherm and related kinetic data. Moreover, the adsorbent mats can be removed from the water after use with the mat integrity still maintained. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46318.
Studies on a novel anion‐exchange membrane based on chitosan and ionized organic compounds with multiwalled carbon nanotubes for alkaline fuel cells
Authors: Zhou Tianchi , He Xuemei , Lu Zhenqian 
Published: February 2018

ABSTRACTIn this work, a novel hydroxyl‐anion‐conducting membrane composed of chitosan (CTS), an ionized organic compound ([QAIM]OH), and hydroxylated multiwalled carbon nanotubes (MWCNTs‐OH) has been fabricated through a blending‐casting method assisted by a glutaraldehyde (GA) crosslinking process that can improve the mechanical properties of the membrane effectively. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy revealed that [QAIM]OH and MWCNTs‐OH were successfully introduced into the CTS matrix. A chemical crosslinking reaction between CTS and GA could be confirmed by FTIR, X‐ray photoelectron spectroscopy, and contact angle tests. By tuning the mass fraction of [QAIM]OH and MWCNTs‐OH in the membrane, the maximum OH−conductivity (5.66 × 10−3S cm−1at room temperature) could be achieved for the composition CTS:[QAIM]OH (1:0.75 in mass) blend doped with 3% MWCNTs‐OH. At a current density of 59.9 mA cm−2, a membrane electrode assembly fabricated with the CTS/[QAIM]OH/ MWCNTs‐OH membrane (1:0.5/3%) achieved a power density of 31.6 mW cm−2in a H2/O2system at room temperature. Under the condition of intermediate temperature (100–140 °C) without water, the conductivities of the membranes increased with increasing temperature and the amount of [QAIM]OH, which acted as an ionic liquid in the membrane, indicating that the ionic transport behaviors could still be occurring. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2018,135, 46323.
Electroactive PVDF thin films fabricated via cooperative stretching process
Authors: Wang Hui , Chen Qiusong , Xia Wei , Qiu Xunlin , Cheng Qian , Zhu Guodong 
Published: February 2018

ABSTRACTFerroelectric polymers have obtained much attention in low cost and flexible electronics. As one representative ferroelectric polymer, poly(vinylidene fluoride) (PVDF) has been comprehensively studied. Due to its complicated phase composition, fabrication of electroactive phases has been an open question especially for PVDF thin films deposited on solid substrates. Here cooperative stretching process is introduced for the fabrication of electroactive PVDF thin films. PVDF thin films are coated on stretchable poly(vinyl alcohol) substrates and mechanically stretched under optimized stretching parameters. Structural, spectral, and electrical measurements indicate that cooperative stretching process can effectively convert the nonpolar α phase to the electroactive β and γ phases companied by an enhancement of film crystallinity. Stretched PVDF films present a reverse piezoelectric coefficient of −37 pm/V, comparable with the results from films fabricated by the other techniques. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46324.