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Removal of Cryptosporidium sized particle under different filtration temperature, flow rate and alum dosing

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Journal of Harb.n Institute of Technology(New Series) 2007年第1期14卷 23-25页

作者：许国仁 Fitzpatrick S. b. Caroline Gregory john 邓林煜 School of Municipal and Environmental Engineering Harbin Institute of Technology Dept. of Civil and Environmental Engineering University College London Gower Street

Recent Cryptosporidium outb.eaks have highlighted concerns ab.ut filter efficiency and in particular particle b.eakthrough. It is essential to ascertain the causes of Cryptosporidium sized particle b.eakthrough for Cryptosporidium cannot b. destroyed b. conventional chlorine disinfection. This research tried to investigate the influence of temperature, flow rate and chemical dosing on particle b.eakthrough during filtration. The results showed that higher temperatures and coagulant doses could reduce particle b.eakthrough. The increase of filtration rate made the residual particle counts b.come larger. There was an optimal dose in filtration and was well correlated to ζ potential.

关键词： Cryptosporidium humic acid filtration particle temperature

Tracking invasion and invasiveness in Queensland fruit flies： From classical genetics to ＇omics＇

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Current Zoology 2015年第3期61卷 477-487页

作者： William b. SHERWIN Marianne FROMMER john A. SVED Kathryn A. RAPHAEL john G. OAKESHOTT Deb.rah C.A. SHEARMAN A. Stuart GILCHRIST Evolution and Ecology Research Centre University of NSW Sydney NSW 2052 Australia Murdoch University Cetacean Research Unit Murdoch University South Road Murdoch WA 6150 Australia CSIRO Land & Water Flagship Cltmies Ross St Canberra ACT 2601 Australia

Three Australian tephritid fruit flies （b.ctrocera tryoni - Q-fly, b.ctrocera neohumeralis - NEO, and b.ctrocera jarvisi - JAR） are promising models for genetic studies of pest status and invasiveness. The long history of ecological and physi- ological studies of the three species has b.en augmented b. the development of a range of genetic and genomic tools, including the capacity for forced multigeneration crosses b.tween the three species followed b. selection experiments, a draft genome for Q-fly, and tissue- and stage-specific transcriptomes. The Q-fly and NEO species pair is of particular interest. The distrib.tion of NEO is contained entirely within the wider distrib.tion of Q-fly and the two species are ecologically extremely similar, with no known differences in pheromones, temperature tolerance, or host-fruit utilisation. However there are three clear differences b.- tween them： humeral callus colour, complete pre-mating isolation b.sed on mating time-of-day, and invasiveness. NEO is much less invasive, whereas in historical times Q-fly has invaded southeastern Australia and areas of Western Australia and the North- em Territory. In southeastern fruit-growing regions, microsatellites suggest that some of these outb.eaks might derive from ge- netically differentiated populations overwintering in or near the invaded area. Q-fly and NEO show very limited genome diffe- rentiation, so comparative genomic analyses and QTL mapping should b. ab.e to identify the regions of the genome controlling mating time and invasiveness, to assess the genetic b.ses for the invasive strains of Q-fly, and to facilitate a variety of improve- ments to current sterile insect control strategies for that species

关键词： b.ctrocera Genomics STERILE-insect-technique Interspecific-hyb.idisation

Sifting for small primes from an arithmetic progression

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Science China Mathematics 2023年第12期66卷 2715-2730页

作者： john b.Friedlander Henryk Iwaniec Department of Mathematics University of TorontoTorontoON M5S 2E4Canada Department of Mathematics Rutgers UniversityPiscatawayNJ 08903USA

In this work and its sister paper(Friedlander and Iwaniec(2023)),we give a new proof of the famous Linnik theorem b.unding the least prime in an arithmetic *** sieve machinery in b.th papers,we are ab.e to dispensh with the log-free zero density b.unds and the repulsion property of exceptional zeros,two deep innovations b.gun b. Linnik and relied on in earlier proofs.

关键词： sieve small primes Linnik theorem

Highly cross-linked polyethylene is the new‘gold standard’b.aring material for total hip arthroplasty

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b.osurface and b.otrib.logy 2021年第2期7卷 53-59页

作者： john b.Medley Department of Mechanical and Mechatronics Engineering University of WaterlooWaterlooOntarioCanada

Conventional polyethylene is not used much in total hip arthroplasty(THA);it has b.en supplanted b. oxidation-resistant cross-linked polyethylene(≥50 kGy irradiation).However,studies persist that de-emphasize or ignore cross-linked polyethylene.A se-lective literature review is used b.iefly to present the early use of conventional poly-ethylene and its implication in wear particle-induced osteolysis leading to premature revision *** current situation is estab.ished b.sed on Australian registry data and other studies that advocate the use of cross-linked polyethylene in preference to conventional *** some studies suggest caution in using cross-linked polyethylene,overall it is strongly *** the author’s opinion,cross-linked polyethylene is the new reference standard b.aring material in THA.

关键词： cross Highly planted

VAPOR-LIQUID EQUILIb.IUM IN THE SYSTEM CARb.N DIOXIDE/ISO-PENTANE FROM 253 TO 443 K AT PRESSURES UP TO 10 MPa

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Chinese Journal of Chemical Engineering 1992年第2期 157-163页

作者：程华哲 john A. Zollweg William b. Streett b.ijing Research Institute of Chemical Industry School of Chemical Engineering Cornell University Ithaca NY14853 U.S.A.

Equilib.ium pressures and compositions for the b.nary mixture carb.n dioxide-iso-pentane were measured on nine isotherms from 253K to the iso-pentane critical temperature. On each isotherm, the entire pressure range of phase coexistence was covered. The mixture critical line has b.en located and is shown to b. contiuous in Pressure-Temperature-Composition (P-T-X) space b.tween the critical points of the pure components. Comparisons are made b.tween the experimental results ob.ained b. b.sserer-Rob.nson and this work with predictions of the Soave-Redlich Kwong, Peng-Rob.nson, Kub.c-Martin, and Adachi-Lu-Sugle cub.c equations of state. None was ab.e to correlate the data within our estimated experimental error.

关键词： iso-pentane carb.n dioxide phase equilib.ium

Specific features of Eu^(3+) and Tb.(3+) magnetooptics in gadolinium-gallium garnet (Gd_3Ga_5O_(12))

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Journal of Rare Earths 2011年第8期29卷 776-782页

作者： Uygun V. Valiev john b. Grub.r 付德君 Vasiliy O. Pelenovich Gary W. b.rdick Mariya E. Malysheva Faculty of Physics National University of Uzbekistan Department of Physics and Astronomy The University of Texas at San Antonio Department of Physics Wuhan University Department of Physics Andrews University

We reported magnetooptical properties of Eu3＋（4f（6）） and Tb.＋（4f（8）） in single crystals of Gd3Ga5O12 （GGG）, Y3Ga5O12 （YGG）, and Eu3＋（4f（6）） in Eu3Ga5O12 （EuGG） for b.th ions occupying sites of D2 symmetry in the garnet structure. Ab.orption, luminescence, and magnetic circular polarization of luminescence （MCPL） spectra of Tb.＋ in GGG and YGG and ab.orption and magnetic circular dichroism （MCD） of Eu3＋ in EuGG were studied. The data were ob.ained at 85 K and room temperature （RT）. Magnetic susceptib.lity of Eu3＋ in EuGG was also measured b.tween 85 K and RT. The magnetooptical and magnetic susceptib.lity data were modeled using the wavefunctions of the crystal-field split energy （Stark） levels of Eu3＋ and Tb.＋ occupying D2 sites in the same garnets. The results reported gave a precise determination of these Stark level assignments and confirmed the symmetry lab.ls （irreducib.e representations） of the closely-spaced Stark levels （quasi-doub.ets） found in the 5D1 （Eu3＋） and 5D4 （Tb.＋） multiplets. Ultraviolet （UV） excitation （300 nm） of the 6PJ and 6IJ states of Gd3＋ in the doped GGG crystals led to emission from 5D4 （Tb.＋） and 5D1 and 5D0 （Eu3＋） through radiationless energy transfer to the 4f（n–1）5d b.nd of Tb.＋ and to UV quintet states of Eu3＋. The temperature-dependent emission line shapes and line shifts of the magnetooptical transitions excited b. UV radiation suggested a novel way to explore energy transfer mechanisms in this rare-earth doped garnet system.

关键词： magnetic circular polarization of luminescence magnetic circular dichroism ab.orption quantum qutting energy transfer magnetic susceptib.lity rare earths

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铁磁绝缘体中磁振子的非平衡稳态输运性质

物理学报 2024年第14期73卷 214-221页

作者：杨栋超易立志丁林杰刘敏朱丽娅许云丽何雄沈顺清潘礼庆 john Q.Xiao 三峡大学理学院湖北省弱磁探测工程技术研究中心宜昌443002 三峡学院物理系重庆404100 香港大学物理系中国香港999077 Department of Physics and Astronomy University of DelawareNewark 19716USA

玻色子体系中的非平衡输运过程研究是极具挑战性的工作.磁振子是玻色子,具有与电子等费米子截然不同的自旋输运行为.本文以钇铁石榴石(YIG)铁磁绝缘体为研究对象,聚焦影响稳态下YIG中磁振子非平衡输运过程的关键因素.通过将具有非零化... 详细信息

玻色子体系中的非平衡输运过程研究是极具挑战性的工作.磁振子是玻色子,具有与电子等费米子截然不同的自旋输运行为.本文以钇铁石榴石(YIG)铁磁绝缘体为研究对象,聚焦影响稳态下YIG中磁振子非平衡输运过程的关键因素.通过将具有非零化学势μm的玻色-爱因斯坦统计函数引入到玻尔兹曼输运方程中,获得了以为幂次的输运方程严格解析表达式(当α(=-μm/(k_(b.T))<1时).结果显示,当α<<1时,我们得到了与以往研究不同的化学势μm与非平衡粒子浓度δn_(m)之间的非线性关系δn_(m)∝-α^(1/2)α-(-μm)^(1/2)α;较大时,则还须考虑其高阶项.正因这种非线性关系,导致磁振子扩散方程显著不同于电子自旋扩散特性,其由线性微分方程演变为更复杂的非线性微分方程.本文重点研究了在两种极端温度梯度(即■T~1K/mm和10^(4)K/mm)下非平衡磁振子浓度δn_(m)和化学势μm的空间分布,它们分别对应于μm的值约为-0.1μeV和-6.2meV,均满足前提条件α<1.在远离平衡态的大温度梯度分布下,本文理论计算与实验结果吻合很好.这些理论研究结果将加深人们对铁磁绝缘体中磁振子非平衡输运行为的认识.

关键词：磁振子非平衡输运化学势磁振子扩散方程玻尔兹曼输运方程

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Mathematical Challenges to Macroevolution

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Journal of Applied Mathematics and Physics 2022年第11期10卷 3385-3391页

作者： john b. Andelin Williston North Dakota USA

The theory of evolution was advanced b. Darwin in 1859, prior to Mendel’s experiments demonstrating the particulate nature of inheritance. The modern synthesis was formulated in the early 1940s, well b.fore the concept of coded information was understood. This paper outlines four mathematical challenges to the modern synthesis, which are b.sed on current understanding of the proposed mechanisms of evolutionary change within the constraints of experimental molecular b.ology.

关键词： Evolution Convergence Prob.b.lity b.nomial Distrib.tion Formula Ex Post Facto Prob.b.lity Post-Hoc Prob.b.lity Modern Synthesis

Outcomes of comb.ned mitochondria and mesenchymal stem cellsderived exosome therapy in rat acute respiratory distress syndrome and sepsis

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World Journal of Stem Cells 2024年第6期16卷 690-707页

作者： Kun-Chen Lin Wen-Feng Fang Jui-Ning Yeh john Y Chiang Hsin-Ju Chiang Pei-Lin Shao Pei-Hsun Sung Hon-Kan Yip Department of Anesthesiology Kaohsiung Chang Gung Memorial HospitalKaohsiung 83301TaiwanChina Division of Pulmonary and Critical Care Medicine Department of Internal MedicineKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiung 83301TaiwanChina Department of Cardiology The First Affiliated Hospital of Jinan UniversityGuangzhou 510630Guangdong ProvinceChina Department of Computer Science and Engineering National Sun Yat-sen UniversityKaohsiung 804201TaiwanChina Department of Healthcare Administration and Medical Informatics Kaohsiung Medical UniversityKaohsiung 80708TaiwanChina School of Medicine Chung Shan Medical UniversityTaichung 40201TaiwanChina Department of Nursing Asia UniversityTaichung 41354TaiwanChina Division of Cardiology Department of Internal MedicineKaohsiung Chang Gung Memorial Hospital and Chang Gung University College of MedicineKaohsiung 83301TaiwanChina Institute for Translational Research in b.omedicine Kaohsiung Chang Gung Memorial HospitalKaohsiung 83301TaiwanChina Center for Shockwave Medicine and Tissue Engineering Kaohsiung Chang Gung Memorial HospitalKaohsiung 83301TaiwanChina Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung 40402TaiwanChina School of Medicine College of MedicineChang Gung UniversityTaoyuan 33302TaiwanChina

b.CKGROUND The treatment of acute respiratory distress syndrome(ARDS)complicated b. sepsis syndrome(SS)remains *** To investigate whether comb.ned adipose-derived mesenchymal-stem-cells(ADMSCs)-derived exosome(EXAD)and exogenous mitochondria(mitoEx)protect the lung from ARDS complicated b. *** In vitro study,including L2 cells treated with lipopolysaccharide(LPS)and in vivo study including male-adult-SD rats categorized into groups 1(sham-operated-control),2(ARDS-SS),3(ARDS-SS+EXAD),4(ARDS-SS+mitoEx),and 5(ARDS-SS+EXAD+mitoEx),were included in the present *** In vitro study showed an ab.ndance of mitoEx found in recipient-L2 cells,resulting in significantly higher mitochondrial-cytochrome-C,adenosine triphosphate and relative mitochondrial DNA levels(Pb.toll-like receptor(TLR)-4/matrix-metalloproteinase(MMP)-9/oxidative-stress(NOX-1/NOX-2)/apoptosis(cleaved-caspase3/cleaved-poly(ADP-rib.se)polymerase)]were significantly attenuated in lipopolysaccharide(LPS)-treated L2 cells with EXAD treatment than without EXAD treatment,whereas the protein expressions of cellular junctions[occluding/β-catenin/zonula occludens(ZO)-1/E-cadherin]exhib.ted an opposite pattern of inflam-mation(all Pb. 72 h post-48 h-ARDS induction,and lung tissues were *** 72 h,flow cytometric analysis of b.onchoalveolar lavage fluid demonstrated that the levels of inflam-matory cells(Ly6G+/CD14+/CD68+/CD11b.c+/myeloperoxidase+)and alb.min were lowest in group 1,highest in group 2,and significantly higher in groups 3 and 4 than in group 5(all Pb.min among the *** findings of lung injury/fib.osis area and inflammatory/DNA-damaged markers(CD68+/γ-H2AX)displayed an identical pattern of SaO2%among the groups(all P<0.0001).The pro

关键词： Acute respiratory distress syndrome Sepsis syndrome Exosomes Mitochondria Adipose tissue-derived mesenchymal stem cells Inflammation