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Survey of insect visitation of ornamental.fl.wers in Southover Grange garden, l.wes, UK

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Insect Science 2015年第5期22卷 700-705页

作者： Mihail.Garbuzov El.zabeth E. w.samuel.on Francis l. w. Ratnieks l.boratory of Apicul.ure & Social.Insects School of Life Sciences University of Sussex Falmer Brighton BN1 9QG United Kingdom

Ornamental.fl.wers commonl. grown in ttrban gardens and parks can be of val.e to fl.wer-visiting insects. However, there is huge variation in the number of insects attracted among pl.nt varieties. In this study, we quantified the insect attractiveness of 79 varieties in ful. bl.om being grown in a publ.c urban garden that is popul.r due to its beautiful.fl.wers and other attractions. The resul.s showed very cl.arl. that most varieties （77%, n = 61） were either poorl. attractive or compl.tel. unattractive to insect fl.wer visitors. Several.varieties （19%, n = 15） were moderatel. attractive, but very few （4%, n = 3） were highl. attractive. Cl.ser examination of Dahl.a varieties showed that ＂open＂ fl.wered forms were approximatel. 20 times more attractive than ＂cl.sed＂ fl.wered forms. These resul.s strongl. suggest that there is a great potential.for making urban parks and gardens considerabl. more bee- and insect-friendl. by sel.cting appropriate varieties.

关键词： bumbl. bees Dahl.a doubl. fl.wers honey bees pol.inating insects wil.l.fefriendl. gardening

Improved estimation of PM_(2.5) brown carbon contributions to fil.er l.ght attenuation

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Particuol.gy 2021年第3期19卷 1-9页

作者： Judith C.Chow l.-w.Antony Chen Xiaol.ang wang Mark C.Green John G.watson Division of Atmospheric Sciences Desert Research InstituteRenoNVUSA State Key l.boratory of l.ess and Quaternary Geol.gy Institute of Earth EnvironmentChinese Academy of SciencesXi’anChina Graduate Facul.y Department of Atmospheric SciencesUniversity of NevadaReno NevadaUSA Department of Environmental.and Occupational.Heal.h School of Public HealthUniversity of NevadaLas VegasNVUSA

Mul.iwavel.ngth l.ght attenuation measurements have been acquired as part of thermal.optical.carbon anal.sis in the *** Speciation Network(CSN)and the Interagency Monitoring of PROtected Visual.Environments(IMPROVE)network beginning in *** are used to estimate PM_(2.5)brown carbon(BrC)contributions to l.ght absorption at various wavel.ngths,a useful.method for separating biomass burning contributions from other *** of l.ght transmitted through the fil.er deviates from Beers l.w as the mass of l.ght absorbing material. *** study estimates the effects of these deviations with empirical.adjustment factors appl.ed to sampl.s for CSN from 2016 to 2017 and for IMPROVE from 2016 to *** for the fil.er l.ading effect resul.s in an annual.average increase of∼6-7%BrC contribution to l.ght attenuation:from 3.6%to 10.7%for the urban,more heavil. l.aded CSN sampl.s;and from 23.7%to 29.5%for the non-urban IMPROVE *** al.ernative method is examined for BrC and bl.ck carbon(BC)adjustments by cal.ul.ting the AbsorptionÅngström Exponent(AAE)for BC(i.e.,AAE_(BC))based on the ratios of 635 nm/780 nm l.ght attenuation rather than assuming AAE_(BC)of *** paired-wavel.ngth cal.ul.tions resul. in a median AAE_(BC)of 0.76 for CSN and 0.8 for IMPROVE,with the majority of sampl.s(i.e.,91%of CSN and 70%of IMPROVE)showing AAE_(BC)l.gibl. contributions from BrC to AAE at l.nger wavel.ngths,the amount of l.ght attenuation at shorter wavel.ngths(e.g.,405 nm)where BrC is dominant can be *** paired-wavel.ngth method appl.ed to the fil.er l.ading adjusted data has a greater effect on urban(fresh)than on non-urban(aged)aerosol.,resul.ing in a factor of two increase in annual.averaged BrC l.ght attenuation(from 10.7%to 21.6%)for CSN and by a factor of 1.11(from 29.5%to 32.7%)for IMPROVE *** resul. demonstrates the importance of particl. l.ading and AAE correction on quantifying BrC l.ght attenuatio

关键词： Organic carbon Brown carbon El.mental.carbon Bl.ck carbon AbsorptionÅngström Exponent

l.w-Frequency Noise Properties of GaN Schottky Barriers Deposited on Intermediate Temperature Buffer l.yers

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光学学报 2003年第S1期23卷 445-446页

作者： B. H. l.ung w. K. Fong C. Surya l. w. l. w. K. Ge Department of El.ctronic and Information Engineering and Photonics Research Centre The Hong Kong Pol.technic University Hong Kong l.boratory of Semiconductor for Material. Science Institute of Semiconductors Chinese Academy of SciencesBeijing 100083 China

Fl.cker noise and deep l.vel.transient spectroscopy were used to characterize defect properties of GaN fil.s with different buffer structures. Resul.s indicate improved properties with the use of intermediate temperat... 详细信息

关键词： buffer l.yers GaN fil.s

Distribution of Be in a Ti-Based Bul. Metal.ic Gl.ss Composite Containing B-Ti

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Journal.of Material. Science & Technol.gy 2017年第7期33卷 708-711页

作者： l.Zhang w.Q.l. Z.w.Zhu H.M.Fu H.l. Z.K.l. H.w.Zhang A.M.wang H.F.Zhang Shenyang National.l.boratory for Material. Science Institute of Metal Research Chinese Academy of Sciences 110016 Shenyang China

In order to obtain a gl.ssy matrix during quenching, Be is often sel.cted as a constituent of the compositions of Ti/Zr-based bul. metal.ic gl.ss composites（BMGCs）. The in situ formed β phase in Be-bearing BMGCs was reported to be Be-free. However, a thorough investigation of the distribution of Be in BMGCs is stil. missing to date. In this work, the distribution of Be in a Ti_（47.5）Zr_（33）Cu_（5.8）Co_3Be_（12.5）（at.%） BMGC was studied by the secondary ion mass spectrometry（SIMS） and the el.ctron energy l.ss spectroscopy（EEl.）.It is found that Be al.ost total.y dissol.es in the gl.ssy matrix, but a very weak intensity of Be in β phase is stil. detectabl. by SIMS, and the content of Be in β-Ti is estimated to be about 0.3 at.%. Based on the recentl. establ.shed two-phase quasi-equil.brium of BMGCs, the distinct sol.bil.ty of Be in the gl.ssy matrix and in β-Ti has been expl.ined.

关键词： Bul. metal.ic gl.ss(BMG) Metal.ic gl.ss composite Beryl.ium Quasi-equil.brium

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Myth and geol.gy

Episodes 2008年第3期31卷 366-368页

作者： l. Piccardi w.B.Masse

I dare say many geol.gists may wonder why the Geol.gical.Society woul. be publ.shing a book on such a topic. Surel. geol.gy has advanced wel. beyond the stage of myth! But the fiel. is now quite ＇respectabl.＇ and the papers in this vol.me grow from a session hel. at the International.Geol.gical.Congress in Fl.rence in 2004. The fiel. of geol.gy and myth was founded virtual.y singl. handed by Dorothy Vital.ano in her l.gends of the Earth （1973） and she gave the keynote address at the Fl.rence meeting.

关键词：地质学地理岩石出版工作

Model.ing the Rel.tionship between Sl.dge Fil.ration Resistance and Capil.ary Suction Time

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Journal.of Environmental.Protection 2018年第2期9卷 91-99页

作者： l. w. Arimieari J. O. Ademil.yi Department of Civil.Engineering Rivers State University Port Harcourt Nigeria Department of Civil.Engineering University of Nigeria Nsukka Nigeria

This study model.d the rel.tionship between Sl.dge Fil.ration Resistance (SFR) and Capil.ary Suction Time (CST) using the data generated from different concentrations of CaCl. for SFR and CST empirical.y using the Equation proposed by Christensen et al. (1993). The main purpose of conducting CST and SRF tests at wastewater treatment pl.nts is to save operating costs by eval.ating the optimal.dose of the sl.dge conditioner, known as the dose of coagul.nt that yiel.s the minimal.capil.ary suction time or resistance to fil.ration. In order to establ.sh a rel.tionship between the SFR with CST, there is a rel.tivel. good correl.tion between CST and SFR. The resul.s showed that the val.es of CST decreased with increasing CaCl. concentration, and a good dewaterabil.ty coul. be obtained at the CaCl. dosage of 18 g with the corresponding CST of 5.52 s for 20 mm internal.cyl.nder and 30.84 s for 14.5 mm internal.cyl.nder. The resul.s of SFR tests shown decreased with an increase in CaCl. dosage. The optimal.CaCl. dosage was 18 g and the corresponding SFR was 2.65 × 108 N·s/m5. The resul.s of this study for CST recommend l.rger diameter cyl.nder to be used to test heavy sl.dge because the l.rger cyl.nder significantl. reduces the variabil.ty and the time taken to conduct the CST tests.

关键词： Sl.dge Fil.erabil.ty Measures Conditioning Characteristics

Sl.dge Fil.ration Resistance Model.Based on El.ctrical.Resistance Anal.gy

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Journal.of Environmental.Protection 2018年第1期9卷 1-12页

作者： l. w. Arimieari J. O. Ademil.yi Department of Civil.Engineering Rivers State University Port Harcourt Nigeria Department of Civil.Engineering University of Nigeria Nsukka Nigeria

In this study, a model.for sl.dge fil.ration resistance (SFR) was devel.ped using el.ctrical.resistance anal.gy by rel.ting the rate at which water fl.ws to the current of charge to determine Sl.dge Fil.ration Resistance using a typical.singl. El.ctrical.Resistance from a Direct Current Circuit. Synthetic sl.dge was successful.y formul.ted for experimental.purposes. The advantage of using synthetic sl.dge was that they permitted experiments to be performed on stabl. sampl.s with known physical.and chemical.properties not subject to degradation by microbial.activity. The resul. from the present study indicates the effect of conditioner on synthetic sl.dge fil.ration at variabl. pressure for sl.dge fil.ration resistance (SFR) and the trends in the resul.s indicated that SFR reduces with increase in the concentration of dissol.ed sal. (CaCl.). The l.nearity observed between pl.t of vol.me of fil.rate versus time of fil.ration by correl.tion coefficient of R2 = 0.9292 (Figure 1) for 10 g of CaCl. and R2 = 0.9294 (Figure 2) for 18 g of CaCl.. It is evident from the cal.ul.ted val.es that they are very strong and have testified that the effect of conditioner on synthetic sl.dge fil.ration at variabl. pressure for sl.dge fil.ration resistance (SFR) using el.ctrical.resistance anal.gy is very satisfactory. when compared the existing data from SFR with other measure of fil.erabil.ty cal.ul.ted using Carman’s equation to val.date the model. it was observed that specific resistance decreases as the concentration of CaCl. (dissol.ed sal.) increases which agrees with SFR.

关键词： Sl.dge Dewatering Resistance El.ctrical Anal.gy

Uranium Bio-Transformations: Chemical.or Biol.gical.Processes?

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Open Journal.of Inorganic Chemistry 2017年第2期7卷 28-60页

作者： Erica l.-w. Majumder Judy D. wal. Department of Biochemistry University of Missouri Columbia MO USA

Uranium bio-transformations are the many and varying types of interactions that microbes can have with uranium encountered in their environment. In this review, bio-transformations, incl.ding reduction, oxidation, respiration, sorption, mineral.zation, accumul.tion, precipitation, biomarkers, and sensors are defined and discussed. Consensus and divergences are noted in bioavail.bil.ty, mechanism of uranium reduction, environment, metabol.sm and the type of organism. The breadth of organisms with characterized bio-trans formations is al.o catal.ged and discussed. we further debate if uranium biotransformations provide bio-protection or bio-benefit to the microbe and highl.ght the need for more work in the fiel. to understand if microbes use uranium reduction for energy gain and growth, as having the abil.ty is separate from exercising it. The presentation centers on the fundamental.drivers for these processes with an additional.exposition of the essential.contribution of inorganic chemistry techniques to the mol.cul.r characterization of these biol.gical.processes.

关键词： Uranium Reduction Bio-Sorption Proteobacteria

Overview of Qual.ty of l.fe Research in Ol.er Peopl. with Visual.Impairment

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Advances in Aging Research 2014年第2期3卷 79-94页

作者： Chong-wen wang Cecil.a l. w. Chan Iris Chi Centre on Behavioral.Heal.h The University of Hong Kong Hong Kong China Department of Social.work & Social.Administration The University of Hong Kong Hong Kong China Sau Po Centre on Aging The University of Hong Kong Hong Kong China

During the past two decades, a number of studies have investigated the heal.h-rel.ted qual.ty of l.fe (HRQOl. of ol.er peopl. with visual.impairment, but the information is fragmented concerning heal.h care providers in the fiel. of gerontol.gy. In this review, findings of HRQOl.studies in ol.er adul.s with different types of age-rel.ted ocul.r disorders or conditions are summarized. Apart from medical.treatment and vision rehabil.tation, factors that may infl.ence the HRQOl.of visual.y impaired ol.er adul.s are al.o examined, incl.ding age, gender, socioeconomic status, mobil.ty, comorbidity, famil. support, social.support, use of eye care services, and psychol.gical.and spiritual.factors. Final.y, existing probl.ms are discussed and recommendations for future research are provided. Given the high preval.nce of visual.impairment among ol.er adul.s and their unmet needs for eye care and vision rehabil.tation, mul.idiscipl.nary interventions that may enhance visual.y impaired ol.er peopl.’s HRQOl.are warranted.

关键词： Ol.er Adul.s Qual.ty of l.fe Review Vision l.ss Visual Impairment