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Efficient fully blade-coated perovskite solar cells in air with nanometer-thick bathocuproine buffer layer

Nano Research 2021年第4期14卷 1034-1042页

作者： Sergio Castro-Hermosa Luana Wouk Izabela Silva Bicalho Luiza de Queiroz Correa bas de Jong Lucio Cina Thomas M.Brown Diego Bagnis CSEM Brasil Avenida Jose Candido da Silveira200031035-536 Belo HorizonteBrazil CHOSE(Centre for Hybrid and Organic Solar Energy) Department of Electronic EngineeringUniversity of Rome Tor VergataVia del Politecnico 100133 RomeItaly Hydro Engineering and Agricultural Development Research Group(GHIDA) Faculty of EngineeringUniversidad SurcolombianaAvenida Pastrana Borrero-Carrera 1410001 NeivaColombia Cicci Research srl via Giordania 227 58100 GrossetoItaly Department of Biotechnology Chemistry and PharmacyUniversity of SienaVia A.Moro 253100 SienaItaly

Fully printed perovskite solar cells(PSCs)were fabricated in air with all constituent layers,except for electrodes,deposited by the blade coating *** PSCs incorporated,for the first time,a nanometer-thick printed bathocuproine(BCP)hole blocking buffer using blade coating and deposited at relative humidity up to 50%.The PSCs with a p-i-n structure(glass/indium tin oxide(ITO)/poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEDOT:PSS)/CH_(3)NH_(3)Pbl_(3)/[6,6]-phenyl-C_(61)-butyric acid methyl ester(PCBM)/BCP/Ag)delivered a maximum power conversion efficiency(PCE)of 14.9%on an active area of 0.5 cm^(2)when measured under standard test *** PSCs with a blade coated BCP delivered performance of 10%and 63%higher(in relative terms)than those incorporating a spin coated BCP or without any BCP film,*** atomic force microscopy(AFM)showed that blade coated films were more homogeneous and acted also as a surface planarizer leading to a reduction of roughness which improved BCP/Ag interface lowering charge *** demonstration of 15%efficient devices with all constituent layers,including nanometer-thick BCP(〜10 nm),deposited by blade coating in air,demonstrates a route for industrialization of this technology.

关键词： perovskite buffer bathocuproine(BCP) blade coating printed electronics

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Spectral Analysis for Fractional Hydrogen Atom Equation

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Advances in Pure Mathematics 2015年第13期5卷 767-773页

作者： Erdal bas Funda Metin Department of Mathematics Faculty of Science Elazig Turkey

In this paper, spectral analysis of fractional Sturm Liouville problem defined on (0, 1], having the singularity of type ?at zero and researched the fundamental properties of the eigenfunctions and eigenvalues for the... 详细信息

关键词： Sturm-Liouville Fractional Hydrogen Atom Singular Spectral

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正电子淹没寿命谱在聚苯乙烯中的应用

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化工新型材料 2008年第4期36卷 61-62,80页

作者：林榕 Corine bas 华南理工大学材料学院广州510641 University of Savoie France 73000

采用自由基聚合方法合成了3个不同分子量的聚苯乙烯,进而用正电子淹没寿命谱(PALS)对这3个样品的拾获淹没寿命τ3及其淹没强度I3进行了研究。实验结果表明,常温下聚苯乙烯的拾获淹没寿命τ3对分子量没有依赖性,但分子量及极性基团对其... 详细信息

采用自由基聚合方法合成了3个不同分子量的聚苯乙烯,进而用正电子淹没寿命谱(PALS)对这3个样品的拾获淹没寿命τ3及其淹没强度I3进行了研究。实验结果表明,常温下聚苯乙烯的拾获淹没寿命τ3对分子量没有依赖性,但分子量及极性基团对其淹没强度I3有着显著的影响。

关键词：正电子湮没寿命谱聚苯乙烯辐射损伤

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Topological to trivial insulating phase transition in stanene

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Nano Research 2016年第3期9卷 774-778页

作者： Michel Houssa bas van den Broek Konstantina Iordanidou Anh Khoa Augustin Lu Geoffrey Pourtois Jean-Pierre Locquet Valery Afanas'ev Andre Stesmans Department of Physics and Astronomy University of Leuven Celestijnenlaan 200D B-3001 Leuven Belgium imec 75 Kapeldreef B-3001 Leuven Belgium

Electronic properties of stanene, the Sn counterpart of graphene are theoretically studied using first-principles simulations. The topological to trivial insulating phase transition induced by an out-of-plane electric field or by quantum confinement effects is predicted. The results highlight the potential to use stanene nanoribbons in gate-voltage controlled dissipationless spin-based devices and are used to set the minimal nanoribbon width for such devices, which is typically approximately 5 nm.

关键词： two-dimensional (2D)materials topological insulators density functional theory(DFT) simulations electronic structure

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miR-200 family expression is downregulated upon neoplastic progression of Barrett's esophagus

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World Journal of Gastroenterology 2011年第8期17卷 1036-1044页

作者： Cameron M Smith David I Watson Mary P Leong George C Mayne Michael Z Michael bas PL Wijnhoven Damian J Hussey Department of Surgery Flinders University Bedford Park Department of Gastroenterology and Hepatology Flinders University Bedford Park Department of Surgery Erasmus Medical Centre

AIM: To investigate miR-200 family expression in Barrett's epithelium, gastric and duodenal epithelia, and esophageal adenocarcinoma. METHODS: Real-time reverse transcriptase-polymerase chain reaction was used to measure miR-200, ZEB1 and ZEB2 expression. Ingenuity Pathway Analysis of miR-200 targets was used to predict biological outcomes. RESULTS: Barrett's epithelium expressed lower levels of miR-141 and miR-200c than did gastric and duodenal epithelia (P < 0.001). In silico analysis indicated roles for the miR-200 family in molecular pathways that distinguish Barrett's epithelium from gastric and duodenalepithelia, and which control apoptosis and proliferation. All miR-200 members were downregulated in adenocarcinoma (P < 0.02), and miR-200c expression was also downregulated in non-invasive epithelium adjacent to adenocarcinoma (P < 0.02). The expression of all miR-200 members was lower in Barrett's epithelium derived high-grade dysplastic cell lines than in a cell line derived from benign Barrett's epithelium. We observed signif icant inverse correlations between miR-200 family expression and ZEB1 and ZEB2 expression in Barrett's epithelium and esophageal adenocarcinoma (P < 0.05). CONCLUSION: miR-200 expression might contribute to the anti-apoptotic and proliferative phenotype of Barrett's epithelium and regulate key neoplastic processes in this epithelium.

关键词： miRNA Barrett’s esophagus Esophageal adenocarcinoma miR-200 Epithelial to mesenchymal transition Apoptosis Proliferation Epithelium

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Bile duct hamartomas-the von Meyenburg complex

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Hepatobiliary & Pancreatic Diseases International 2007年第1期6卷 108-109页

作者： Valdemir José Alegre Salles Alexandre Marotta Jorge Miguel Kather Netto Manlio basílio Speranzini Marcos Roberto Martins University of Taubaté Department of Medicine So Paulo Brazil

: Hamartomas of the bile duct (von Meyenburg complex) are benign neoplasms of the liver, constituted histologically cystic dilatations of the bile duct, encompassed by fibrous stroma. We report a 42-year-old female patient with symptomatic cholecystitis, whose gross and ultrasonic appearance suggestive of multiple liver metastases. Magnetic resonance imaging and liver biopsy are the gold standards for diagnosis of this rare hepatobiliary condition.

关键词： bile duct hamartoma von Meyenburg complex nonparasitic hepatic cyst, surgery

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Active and passive behaviors of gold in cyanide solutions

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Transactions of Nonferrous Metals Society of China 2015年第10期25卷 3442-3453页

作者： Ahmet Deniz bas Fariba SAFIZADEH Wei ZHANG Edward GHALI Yeonuk CHOI Department of Mining Metallurgical and Materials EngineeringLaval University Barrick Gold Corporation Suite 3700161 Bay Street P.O.Box 212 TorontoOntario M5J 2S1Canada

Active and passive behaviors of pure gold（Au） and roasted gold ore（RGO） electrodes were investigated at 25 °C in de-aerated agitated cyanide *** voltammetry and potentiodynamic polarization with agitation at 100 r/min in 0.04 mol/L NaCN solution showed different peak positions and current *** tests illustrate that the peak current densities increase greatly with increasing the cyanide *** the pH value from 10 to 11 resultes in a great decrease of current density,while it increases noticeably by decreasing the agitation from 100 to 60 r/*** the presence of oxygen,Au and RGO electrodes show different characteristics of peak positions and corrosion *** potentiostatic studies show that increasing the potential from 1 to 1.4 V at pH value of 11 results in an 80% decrease of current density while decreasing the pH value from 11 to 10 at 1 V gives a 1.7 fold increase of current density,possibly due to more effective passive *** polarization,electrochemical noise measurements（ENM） during decay periods show that Au results in more passive states at high potentials,showing pitting *** ENM results show that this technique can be a promising tool for a better understanding of gold *** XPS studies prove the presence of passive oxides.

关键词： pure gold roasted gold ore cyanide passivation electrochemical noise

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Four cancer cases after esophageal atresia repair: Time to start screening the upper gastrointestinal tract

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World Journal of Gastroenterology 2018年第9期24卷 1056-1062页

作者： Floor WT Vergouwe Madeleine Gottrand bas PL Wijnhoven Hanneke IJsselstijn Guillaume Piessen Marco J Bruno René MH Wijnen Manon CW Spaander Department of Gastroenterology and Hepatology Erasmus MC University Medical Center Department of Pediatric Surgery Erasmus MC University Medical Center - Sophia Children's Hospital Department of Pediatrics Jeanne de Flandre Children’s Hospital - Univ.Lille CHU Lille Department of Surgery Erasmus MC University Medical Center Department of Digestive and Oncological Surgery Claude Huriez Hospital - Univ.Lille CHU Lille

Esophageal atresia(EA) is one of the most common congenital digestive malformations and requires surgical correction early in life. Dedicated centers have reported survival rates up to 95%. The most frequent comorbidities after EA repair are dysphagia(72%) and gastroesophageal reflux(GER)(67%). Chronic GER after EA repair might lead to mucosal damage, esophageal stricturing, Barrett's esophagus and eventually esophageal adenocarcinoma. Several long-term follow-up studies found an increased risk of Barrett's esophagus and esophageal carcinoma in EA patients, both at a relatively young age. Given these findings, the recent ESPGHAN-NASPGHAN guideline recommends routine endoscopy in adults born with EA. We report a series of four EA patients who developed a carcinoma of the gastrointestinal tract: three esophageal carcinoma and one colorectal carcinoma in a colonic interposition. These cases emphasize the importance of lifelong screening of the upper gastrointestinal tract in EA patients.

关键词： Adenocarcinoma Esophageal atresia Esophageal cancer Screening Barrett’s esophagus Squamous cell carcinoma

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Treatment of copper-rich gold ore by cyanide leaching, ammonia pretreatment and ammoniacal cyanide leaching

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Transactions of Nonferrous Metals Society of China 2015年第2期25卷 597-607页

作者： A.D.bas E.KOC Y.E.YAZICI H.DEVECI Hydromet-B&PM Group Division of Mineral & Coal Processing Department of Mining EngineeringKaradeniz Technical University

The treatment of a copper sulphide-bearing gold ore by direct cyanide leaching, ammonia pretreatment and ammoniacal cyanide leaching was investigated. Dissolution behaviour of gold and copper in these leaching systems was demonstrated. Severe interference by the copper containing sulphides with cyanide leaching of gold is observed at p（NaCN）〈5 g/L. This is consistent with speciation calculations. Ammonia pretreatment is shown to readily eliminate the copper interference, allowing almost complete extraction of gold with concomitantly low reagent consumption in subsequent cyanide leaching. In ammoniacal cyanide system, Box-Behnken experimental design shows the main and interaction effects of NH3, NaCN and Pb（NO3）2. The concentrations of NH3 and NaCN are statistically confirmed to be significant factors affecting extraction of gold while the effect of Pb（NO3）2 is limited. Increasing the concentration of NH3 improves the selectivity and extent of gold extraction and reduces the cyanide consumption. The contribution of reagent interactions to gold extraction is statistically insignificant. These findings highlight that ammonia pretreatment and ammonia-cyanide leaching are promising approaches for the treatment of gold ores with high copper sulphide content.

关键词： copper-gold ores ammoniacal cyanide leaching ammonia leaching pretreatment cyanide leaching

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China in World Industrialization

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China Economist 2016年第6期11卷 98-109页

作者： XuYi bas van Leeuwen Guangxi Normal University Guilin China International Instttute of Soetal History Utrecht University the Netherlands

Combining the sectoral accounting method of the System of National Accounts （SNA） with new statistical materials from the United Nations, as well as historical research into various countries around the world, this paper arrives at an estimate of value added of Chinese and world industries between 1850 and 2012. In doing so, we not only modify past work by Paul Bairoch, but also arrive at significantly different conclusions about China＇s position in worm industrialization.

关键词： China industrialization value added worm

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