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Photoelectrochemical evaluation of SILAR-deposited nanoporous BiVO4 photoanodes for solar-driven water splitting

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Nano Materials Science 2020年第3期2卷 227-234页

作者： Siti Nur'ain Haji Yassin adrian Soong Leong Sim James Robert Jennings Faculty of Science Universiti Brunei DarussalamJalan Tungku LinkBE 1410Brunei Darussalam

We report a photoelectrochemical investigation of BiVO4 photoanodes prepared by successive ionic layer adsorption and reaction(SILAR),a facile method that yields uniform nanoporous *** characterization of the phase,morphology,composition,and optical properties of the prepared films,the efficiencies of charge separation(ηsep)and water oxidation(ηox)in solar water splitting cells employing these photoanodes were estimated following a previously reported *** wavelength and illumination direction dependencies were discovered in the derived efficiencies,casting doubt on the validity of the *** alternative approach using a diffusion–reaction model that explicitly considers the efficiency of electron collection resolved the discrepancies and explained the illumination direction dependence of the *** diffusion lengths(Ln)of 0.45μm and 0.55μm were derived for pristine and cobalt phosphate(Co-Pi)modified BiVO4,respectively,which are much shorter than the film thickness of^2.1μ*** Co-Pi treatment also increasedηoxfrom 0.86 to^1,which is the main reason for the overall performance enhancement caused by adding *** findings suggest that there is little scope for improving the performance of SILAR-deposited BiVO4 photoanodes by further catalyzing water oxidation,but enhanced performance is achievable if electron transport can be improved.

关键词： Bismuth vanadate BiVO4 Solar water splitting Electron diffusion length Charge collection efficiency Water oxidation efficiency Charge separation efficiency

Route to OCT From OFS at University of Kent

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Photonic Sensors 2011年第2期1卷 166-186页

作者： adrian PODOLEANU Applied Optics Group School of Physical Sciences University of Kent Canterbury CT2 7NH UK

A review is presented of several technical solutions developed by the Applied Optics Group （AOG） in the field of low coherence interferometry applied to optical fiber sensors （OFS） that subsequently allowed AOG to... 详细信息

关键词： Low coherence interferometry optical coherence tomography eye imaging

Short Ring Cavity Swept Source Based on a Highly Reflective Chirped FBG

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Photonic Sensors 2015年第3期5卷 251-256页

作者： Radu-Florin STANCU adrian PODOLEANU Applied Optics Group School of Physical Sciences University of Kent Canterbury Kent CT2 7NH UK

An optical akinetic swept source （AKSS） at 1060nm, comprising a 5m length fiber ring cavity, a semiconductor optical amplifier （SOA） as gain medium, and a 98% reflective chirped fiber Bragg grating as a dispersive element, is described. Active mode-locking was achieved by directly modulating the current of the SOA with sinusoidal signal of frequency equal to 10 times and 20 times the cavity resonance frequency. In the static regime, linewidths as narrow as 60pm and a tuning bandwidth of 30nm were achieved, while a 2roW output power, without any optical booster, was measured dynamically at a sweep speed of 100kHz. The axial range of the AKSS was evaluated by scanning through the channeled spectrum of a Mach-Zehnder interferometer.

关键词： Semiconductor optical amplifier laser mode locking ring laser dispersive element

Budd-Chiari syndrome secondary to caval recurrence of renal cell carcinoma

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Hepatobiliary & Pancreatic Diseases International 2010年第3期9卷 321-324页

作者： Gabriele Marangoni adrian O'Sullivan Amir Ali Walid Faraj Nigel Heaton Institute of Liver Studies King's College London School of Medicine at King's College Hospital

BACKGROUND:Renal cell carcinoma(RCC)involves the inferior vena cava(IVC)in a minority of *** commonly,it presents with Budd-Chiari *** untreated, the condition progresses towards liver failure and ***:We report a case of Budd-Chiari syndrome due to infiltration of the IVC and right atrium by recurrence of RCC 7 years after successful treatment by primary ***:Surgery was performed with a combined abdominal and thoracic approach with cardio-pulmonary by-pass and *** tumor was removed and a cadaveric iliac vein graft used to re-establish venous continuity between the right atrium and hepatic ***:Although it is a complex and high-risk procedure,aggressive surgery performed by an experienced team with liver transplant and cardiothoracic skills may enable resection of apparently advanced caval *** case is discussed in the light of the current literature.

关键词： inferior vena cava renal cell carcinoma recurrence Budd-Chiari syndrome

Psychophysics of the hoverfly: categorical or continuous color discrimination?

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Current Zoology 2019年第4期65卷 483-492页

作者： Lea Hannah adrian G. Dyer Jair E. Garcia Alan Dorin Martin Burd School of Biological Sciences Monash University Clayton Victoria 3800 Australia Hawkesbury Institute for the Environment Western Sydney University Richmond New South Wales 2753 Australia School of Media and Communication RMIT University Melbourne Victoria 3001 Australia Department of Physiology Monash University Clayton Victoria 3800 Australia Faculty of Information Technology Monash University Clayton Victoria 3800 Australia

There is increasing interest in flies as potentially important pollinators. Flies are known to have a complex visual system, in eluding 4 spectral classes of photoreceptors that con tribute to the perception of color. Our current understanding of how color signals are perceived by flies is based on data for the blowfly Lucilia sp., which after being conditi oned to rewarded mono chromatic light stimuli, showed evidenee of a categorical color visual system. The resulting opponent fly color space has 4 distinct categories, and has been used to interpret how some fly pollinators may perceive flower colors. However, formal proof that flower flies (Syrphidae) only use a simple, categorical color process remains outstanding. In free-flying experiments, we tested the hoverfly Eristalis tenax, a Batesian mimic of the honeybee, that receives its nutrition by visiting flowers. Using a range of broadband similar-dissimilar color stimuli previously used to test color perception in pollinating hymenopteran species, we evaluated if there are steep changes in behavioral choices with continuously increasing color differences as might be expected by categorical color processing. Our data revealed that color choices by the hoverfly are mediated by a continuous monotonic function. Thus, these flies did not use a categorical processing, but showed evidenee of a color discrimination function similar to that observed in several bee species. We therefore empirically provide data for the minimum color distanee that can be discriminated by hoverflies in fly color space, enabling an improved un derstandi ng of plant-poll in ator interactions with a non-model insect species.

关键词： chromatic signal color model floral color fly pollination plant-pollinator vision

Nuclear medicine dynamic investigations in the diagnosis of Budd-Chiari syndrome

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World Journal of Hepatology 2014年第4期6卷 251-262页

作者： Mircea Dragoteanu Ioan-adrian Balea Cecilia-Diana Piglesan Department of Nuclear Medicine Regional Institute for Gastroenterology and HepatologyProf.Dr.Octavian Fodor400162 Cluj-NapocaRomania

AIM:To investigate the hepatic hemodynamics in the Budd-Chiari syndrome(BCS) using per-rectal portal scintigraphy(PRPS) and liver angioscintigraphy(LAS).METHODS:Fourteen consecutive patients with BCS were evaluated by PRPS between 2003 and *** of them underwent LAS and liver scan(LS) with Tc-99m *** patients had clinical manifestations and three were asymptomatic,incidentally diagnosed at *** control group included 15 healthy *** used new parameters at PRPS,the liver transit time of portal inflow and the blood circulation time between the right heart and *** offered information on the hepatic areas missing venous outflow or portal inflow,length and extent of the lesions,open portosystemic shunts(PSS),involvement of the caudate lobe(CL) as an intrahepatic shunt and flow reversal in the splenic *** was useful in the differential diagnosis between the BCS and portal obstructions,highlightingthe hepatic artery buffer response and reversed portal *** offered complementary data,especially on the ***:We described three hemodynamic categories of the BCS with several subtypes and stages,based on the finding that perfusion changes depend on the initial number and succession in time of the hepatic veins(HVs) *** of one hepatic vein(HV) did not cause opening of *** BCS debuted by common obstruction of two HVs had different hemodynamic aspects in acute and chronic stages after subsequent obstruction of the third *** chronic stages,obstruction of two HVs resulted in opening of *** BCS,determined by thrombosis of the terminal part of the inferior vena cava,presented in the acute stage with open PSS with low speed *** least several weeks are required in the obstructions of two or three HVs for the spontaneous opening of dynamically efficient *** CL seems to have only a transient important role of intrahepatic shunt in several types of the ***:Dynamic nuclear medicine investigations

关键词： Budd-Chiari syndrome Per-rectal portal scintigraphy Liver angioscintigraphy Caudate lobe Hepatic veins

Bridging the gap:Unveiling the crisis of physical inactivity in inflammatory bowel diseases

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World Journal of Gastroenterology 2024年第10期30卷 1261-1265页

作者： Remus Stafie Ana-Maria Singeap adrian Rotaru Carol Stanciu Anca Trifan Department of Gastroenterology Faculty of Medicine“Grigore T.Popa”University of Medicine and PharmacyIasi 700115Romania Institute of Gastroenterology and Hepatology “St.Spiridon”University HospitalIasi 700111Romania

In this editorial we comment on the article titled“Inflammatory bowel diseases patients suffer from significant low levels and barriers to physical activity:The BE-FIT-IBD study”published in a recent issue of the World Journal of Gastroen-terology 2023;29(41):*** bowel diseases(IBD)are emerging as a significant global health concern as their incidence continues to rise on a global scale,with detrimental impacts on quality of *** many advances have been made regarding the management of the disease,physical inactivity in these patients represents an underexplored issue that may hold the key for further and better understanding the ramifications of *** pain,fatigue,and fear of exacerbating symptoms promotes physical inactivity among IBD patients,while the lack of clear guidelines on safe exercise regimens contributes to a norm of physical *** activity(PA)is accepted to have a positive effect on disease outcomes and quality of life,while inactivity exacerbates comorbidities like cardiovascular disease and mental health ***“BE-FIT-IBD”study,focusing on PA levels and barriers in IBD patients of Southern Italy,revealed that a significant proportion(42.9%)were physically *** lack of PA is attributed to barriers such as fear of flare-ups and misconceptions about exercise exacerbating the *** study also highlighted the need for better communication between healthcare providers and patients regarding the benefits of PA and safe incorporation into ***,physical inactivity may also contribute to disability in IBD patients,having a great impact on employment *** note is the fact that IBD also comes with an important psychological burden with relevant evidence suggesting that regular PA can improve mood,reduce anxiety,and enhance mental ***“BE-FIT-IBD”study advocated for the integration of PA into IBD management,emphasizing the bidirectional link between PA and *** exe

关键词： Inflammatory bowel disease Physical activity Disability Psychological burden Body composition Quality of life

Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain

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Journal of Integrative Agriculture 2016年第7期15卷 1612-1624页

作者： YU Han-qing LI Yong ZHOU Na adrian Chappell LI Xiao-yu Jean Poesen Agricultural Clean Watershed Research Group Institute of Environment and Sustainable Development in AgricultureChinese Academy of Agricultural Sciences(CAA S)Beijing 100081P.R.China CSIRO Land&Water National Research Flagship Canberra ACT 2601Australia Division of Geography KU LeuvenHeverlee 3001Belgium

Soil loss due to crop harvesting （SLCH） is a soil erosion process that signiifcantly contributes to soil degradation in crop-lands. However, little is known about soil nutrient losses caused by SLCH and its environmental impacts. In the North China Plain area, we measured the losses of soil organic carbon （SOC） and nitrogen as wel as phosphorus due to SLCH and assessed their relationship with soil particle size composition, agronomic practices and soil moisture content. Our results show that the losses by harvesting potato of SOC, total nitrogen （TN）, available nitrogen （AN）, available phosphorus （AP） and total phosphorus （TP） were 1.7, 1.8, 1.8, 15.9 and 14.1 times compared by harvesting sweet potato, respectively. The variation of SOC, N and P loss by SLCH are mainly explained by the variation of plant density （PD）（17–50%）, net mass of an individual tuber （Mcrop/p）（16–74%）, soil clay content （34–70%） and water content （19–46%）. Taking into account the current sewage treatment system and the ratio of the nutrients adhering to the tubers during transportation from the ifeld （NTRP/SP）, the loss of TN and TP by harvesting of potato and sweet potato in the North China Plain area amounts to 3% N and 20% P loads in the water bodies of this region. The fate of the exported N and P in the sewage treatment system ultimately controls the contribution of N and P to the polution of lakes and rivers. Our results suggest that a large amount of SLCH-induced soil nutrient export during transportation from the ifeld is a potential polutant source for agricultural water for vast planting areas of tuber crops in China, and should not be overlooked.

关键词： soil nutrient losses potato sweet potato crop harvesting water polution

THE INFLUENCE OF THERMAL RESISTANCE AND THERMAL MASS ON THE SEASONAL PERFORMANCE OF WALLING SYSTEMS IN AUSTRALIA

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Journal of Green Building 2015年第4期10卷 107-126页

作者： Dariusz Alterman adrian W.Page Behdad Moghtaderi Congcong Zhang Trevor Moffiet The University of Newcastle Frontier Energy Technologies CentreAustralia

This paper describes an experimental investigation of the thermal performance of four Australian domestic walling systems(cavity brick,insulated cavity brick,insulated brick veneer and insulated reverse brick veneer)having various combinations of thermal insulation and of thermal mass location within the *** experimental analysis extends further the previous studies of the benefits of thermal mass on the overall thermal performance of building enclosures(Gregory et al.2008,Luo at al.2008,Alashaary et al.2009).The comparison is based on the time required to maintain thermal comfort for free-floating internal *** results clearly show that internal comfort levels are influenced by both the thermal resistance of the walls as well as the extent and location of the thermal mass,with neither parameter being the sole *** best thermal performance is therefore obtained by an appropriate combination of thermal mass and resistance,rather than focussing on the overall wall thermal resistance(R-value)alone.A new approach of density temperature plots for comparison of temperature variation is also used in the assessment of module thermal performance.

关键词： thermal mass thermal performance thermal resistance building enclosure temperature plots