نتایج جستجو برای: شاخص کیفیت هوا psi

تعداد نتایج: 141294  

Journal: :Genetics 2010
Alex K Lancaster J Patrick Bardill Heather L True Joanna Masel

Epigenetically inherited aggregates of the yeast prion [PSI+] cause genomewide readthrough translation that sometimes increases evolvability in certain harsh environments. The effects of natural selection on modifiers of [PSI+] appearance have been the subject of much debate. It seems likely that [PSI+] would be at least mildly deleterious in most environments, but this may be counteracted by i...

Journal: :Journal of virology 2007
Samuel J Rulli Catherine S Hibbert Jane Mirro Thoru Pederson Shyam Biswal Alan Rein

Assembly of retrovirus particles normally entails the selective encapsidation of viral genomic RNA. However, in the absence of packageable viral RNA, assembly is still efficient, and the released virus-like particles (termed "Psi-" particles) still contain roughly normal amounts of RNA. We have proposed that cellular mRNAs replace the genome in Psi- particles. We have now analyzed the mRNA cont...

Journal: :European journal of cancer 2012
Nicolas U Gerber Katja von Hoff André O von Bueren Wiebke Treulieb Frank Deinlein Martin Benesch Isabella Zwiener Niels Soerensen Monika Warmuth-Metz Torsten Pietsch Uwe Mittler Joachim Kuehl Rolf-Dieter Kortmann Michael A Grotzer Stefan Rutkowski

BACKGROUND Due to the lacking specificity of symptoms making a correct diagnosis can be a challenge in children with medulloblastoma. This can lead to prediagnostic symptomatic intervals (PSIs) of several weeks to months. It is unknown whether the length of the PSI is associated with an inferior survival outcome in this population. METHODS To study the association of PSI with disease stage at...

Journal: :Plant physiology 2003
Ilan Shomer Anton J Novacky Sharon M Pike Uri Yermiyahu Thomas B Kinraide

Electrical potentials in cell walls (psi(Wall)) and at plasma membrane surfaces (psi(PM)) are determinants of ion activities in these phases. The psi(PM) plays a demonstrated role in ion uptake and intoxication, but a comprehensive electrostatic theory of plant-ion interactions will require further understanding of psi(Wall). psi(Wall) from potato (Solanum tuberosum) tubers and wheat (Triticum ...

Journal: :Physical review letters 2006
T E Coan Y S Gao F Liu M Artuso S Blusk J Butt J Li N Menaa R Mountain S Nisar K Randrianarivony R Redjimi R Sia T Skwarnicki S Stone J C Wang K Zhang S E Csorna G Bonvicini D Cinabro M Dubrovin A Lincoln D M Asner K W Edwards R A Briere I Brock J Chen T Ferguson G Tatishvili H Vogel M E Watkins J L Rosner N E Adam J P Alexander K Berkelman D G Cassel J E Duboscq K M Ecklund R Ehrlich L Fields R S Galik L Gibbons R Gray S W Gray D L Hartill B K Heltsley D Hertz C D Jones J Kandaswamy D L Kreinick V E Kuznetsov H Mahlke-Krüger T O Meyer P U E Onyisi J R Patterson D Peterson E A Phillips J Pivarski D Riley A Ryd A J Sadoff H Schwarthoff X Shi S Stroiney W M Sun T Wilksen M Weinberger S B Athar P Avery L Breva-Newell R Patel V Potlia H Stoeck J Yelton P Rubin C Cawlfield B I Eisenstein I Karliner D Kim N Lowrey P Naik C Sedlack M Selen E J White J Wiss M R Shepherd D Besson T K Pedlar D Cronin-Hennessy K Y Gao D T Gong J Hietala Y Kubota T Klein B W Lang R Poling A W Scott A Smith S Dobbs Z Metreveli K K Seth A Tomaradze P Zweber J Ernst H Severini S A Dytman W Love V Savinov O Aquines Z Li A Lopez S Mehrabyan H Mendez J Ramirez G S Huang D H Miller V Pavlunin B Sanghi I P J Shipsey B Xin G S Adams M Anderson J P Cummings I Danko J Napolitano Q He J Insler H Muramatsu C S Park E H Thorndike

Using data collected with the CLEO detector operating at the CESR e+e- collider at sqrt[s]=3.97-4.26 GeV, we investigate 15 charmonium decay modes of the psi(4040), psi(4160), and Y(4260) resonances. We confirm, at 11 sigma significance, the BABAR Y(4260)-->pi+pi- J/psi discovery, make the first observation of Y(4260)--> pi(0)pi(0) J/psi (5.1 sigma), and find the first evidence for Y(4260)-->K+...

Journal: :Physical review letters 2009
R E Mitchell M R Shepherd D Besson T K Pedlar D Cronin-Hennessy K Y Gao J Hietala Y Kubota T Klein B W Lang R Poling A W Scott P Zweber S Dobbs Z Metreveli K K Seth A Tomaradze J Libby A Powell G Wilkinson K M Ecklund W Love V Savinov A Lopez H Mendez J Ramirez J Y Ge D H Miller I P J Shipsey B Xin G S Adams M Anderson J P Cummings I Danko D Hu B Moziak J Napolitano Q He J Insler H Muramatsu C S Park E H Thorndike F Yang M Artuso S Blusk S Khalil J Li R Mountain S Nisar K Randrianarivony N Sultana T Skwarnicki S Stone J C Wang L M Zhang G Bonvicini D Cinabro M Dubrovin A Lincoln P Naik J Rademacker D M Asner K W Edwards J Reed R A Briere T Ferguson G Tatishvili H Vogel M E Watkins J L Rosner J P Alexander D G Cassel J E Duboscq R Ehrlich L Fields R S Galik L Gibbons R Gray S W Gray D L Hartill B K Heltsley D Hertz J M Hunt J Kandaswamy D L Kreinick V E Kuznetsov J Ledoux H Mahlke-Krüger D Mohapatra P U E Onyisi J R Patterson D Peterson D Riley A Ryd A J Sadoff X Shi S Stroiney W M Sun T Wilksen S B Athar R Patel J Yelton P Rubin B I Eisenstein I Karliner S Mehrabyan N Lowrey M Selen E J White J Wiss

Using 2.45x10;{7} psi(2S) decays collected with the CLEO-c detector at the Cornell Electron Storage Ring we present the most precise measurements of magnetic dipole transitions in the charmonium system. We measure B(psi(2S)-->gammaeta_{c})=(4.32+/-0.16+/-0.60)x10;{-3}, B(J/psi-->gammaeta_{c})/B(psi(2S)-->gammaeta_{c})=4.59+/-0.23+/-0.64, and B(J/psi-->gammaeta_{c})=(1.98+/-0.09+/-0.30)%. We obs...

ژورنال: :زمین شناسی کاربردی پیشرفته 0
کاظم رنگزن دانشیار گروه سنجش از دور و gis، دانشگاه شهید چمران اهواز علیرضا زراسوندی استاد گروه زمین شناسی، دانشگاه شهید چمران اهواز علی عبدالخانی کارشناس ارشد سنجش از دور و gis، شرکت برق منطقه ای استان خوزستان برات مجردی استادیارگروه نقشه برداری، دانشگاه شهیدرجایی

با افزایش وقوع طوفانهای گردوغبار در چند سال اخیر در جنوب غرب ایران و بویژه در استان خوزستان و به تبع آن کاهش کیفیت هوا در این مناطق، مطالعه این پدیده از اهمیت بالایی برخوردار است. بدین منظور و با جمع آوری داده­های aod سنجنده مودیس و pm10 پنج ایستگاه اداره کل حفاظت محیط زیست استان خوزستان در 4 ماه اول سال 1388 رابطه همبستگی بینaod و میانگین روزانه و ساعتی  pm10مطالعه گردید. نتایج نشان داد که تغی...

2016
Wei Huang Ying-Jie Yang Hong Hu Shi-Bao Zhang

It has been indicated that photosystem I (PSI) is susceptible to chilling-light stress in tobacco leaves, but the effect of growth light intensity on chilling-induced PSI photoinhibition in tobacco is unclear. We examined the effects of chilling temperature (4°C) associated with moderate light intensity (300 μmol photons m(-2) s(-1)) on the activities of PSI and photosystem II (PSII) in leaves ...

Journal: :Photochemistry and photobiology 2011
Xiaochun Qin Wenda Wang Kebing Wang Yueyong Xin Tingyun Kuang

We developed a novel method for the isolation of the PSI-LHCI-LHCII complex from spinach leaves. The supercomplex was resolved into a core complex (CPI), LHCII trimers, LHCI dimers and LHCII monomers using green gel electrophoresis. We then investigate changes in the fluorescence and absorption spectra of PSI-LHCI-LHCII under high light. In addition, we compared light-induced denaturation of th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده ادبیات و علوم انسانی 1386

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