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Kim, Yong-il,Ha, Seunggyun,So, Young,Lee, Won Woo,Byun, Seok-Soo,Kim, Sang Eun Springer Berlin Heidelberg 2014 EUROPEAN RADIOLOGY Vol.24 No.2
<P><B>Objective</B></P><P>We aimed to improve Tc-99m DTPA glomerular filtration rate (GFR) scintigraphy (Gates’ method) in a prospective study using Cr-51 EDTA GFR test as a gold standard.</P><P><B>Methods</B></P><P>Fifty-seven Tc-99m DTPA GFR scintigrams in 45 subjects (male/female = 33:12, age = 45.9 ± 17.6 years, 14 healthy volunteers and 31 nephrectomised patients) were compared using Cr-51 EDTA GFR tests. Using the %renal uptake of Tc-99m DTPA and Cr-51 EDTA GFR, a revised equation for GFR was established through linear regression analysis.</P><P><B>Results</B></P><P>The revised equation for improved GFR was GFR(mL/min) = (<I>%</I>renal uptake × 11.7773) − 0.7354. Gates’ original GFRs (70.1 ± 20.5 mL/min/1.73 m<SUP>2</SUP>) were significantly lower than Cr-51 EDTA GFRs (97.0 ± 31.9 mL/min/1.73 m<SUP>2</SUP>; <I>P</I> < 0.0001), but the improved GFRs (98.0 ± 26.3 mL/min/1.73 m<SUP>2</SUP>) were not different from (<I>P</I> = 0.7360) and had a significant correlation with (<I>r</I> = 0.73, <I>P</I> < 0.0001) the Cr-51 EDTA GFRs. The revised GFR equation effectively demonstrated perioperative GFR changes in kidneys that were operated on and the contralateral kidneys at 3 and 6 months post-partial nephrectomy (<I>n</I> = 25).</P><P><B>Conclusions</B></P><P>GFR measurement using Tc-99m DTPA scintigraphy could be significantly improved by a revised equation derived from the comparison with Cr-51 EDTA GFR.</P><P><B><I>Key Points</I></B></P><P>• <I>Measurement of glomerular filtration rate is difficult following nephrectomy</I>.</P><P>• <I>Measurements can be significantly improved by new renal sctintigraphic methods</I>.</P><P>• <I>This helps physicians to measure kidney function of patients following nephrectomy</I>.</P><P>• <I>Management of renal tumour patients should become more effective</I>.</P>
Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Adam, W.,Bergauer, T.,Dragicevic, M.,Erö,, J.,Friedl, M.,Frü,hwirth, R.,Ghete, V. M.,Hartl, C.,Hö,rmann, N.,Hrubec, J.,Jeitler, M.,Kiesenhofer, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.6
<P>A search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5[FORMULA OMISSION] collected by the CMS experiment at the LHC in [FORMULA OMISSION] collisions at a centre-of-mass energy of 8[FORMULA OMISSION]. In order to separate the signal from the larger [FORMULA OMISSION] + jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier, [FORMULA OMISSION], relative to the standard model prediction for a Higgs boson mass of 125[FORMULA OMISSION]. The observed (expected) exclusion limit at a 95 % confidence level is [FORMULA OMISSION] (3.3), corresponding to a best fit value [FORMULA OMISSION].</P>
Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Adam, W.,Bergauer, T.,Dragicevic, M.,Erö,, J.,Friedl, M.,Frü,hwirth, R.,Ghete, V. M.,Hartl, C.,Hö,rmann, N.,Hrubec, J.,Jeitler, M.,Kiesenhofer, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.11
<P>The normalized differential cross section for top quark pair ([FORMULA OMISSION]) production is measured in pp collisions at a centre-of-mass energy of 8[FORMULA OMISSION] at the CERN LHC using the CMS detector in data corresponding to an integrated luminosity of 19.7[FORMULA OMISSION]. The measurements are performed in the lepton[FORMULA OMISSION]jets ([FORMULA OMISSION][FORMULA OMISSION]jets) and in the dilepton ([FORMULA OMISSION], [FORMULA OMISSION], and [FORMULA OMISSION]) decay channels. The [FORMULA OMISSION] cross section is measured as a function of the kinematic properties of the charged leptons, the jets associated to b quarks, the top quarks, and the [FORMULA OMISSION] system. The data are compared with several predictions from perturbative quantum chromodynamic up to approximate next-to-next-to-leading-order precision. No significant deviations are observed relative to the standard model predictions.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1140/epjc/s10052-015-3709-x) contains supplementary material, which is available to authorized users.</P>
An annotated database of Arabidopsis mutants of acyl lipid metabolism
McGlew, Kathleen,Shaw, Vincent,Zhang, Meng,Kim, Ryeo Jin,Yang, Weili,Shorrosh, Basil,Suh, Mi Chung,Ohlrogge, John Springer Berlin Heidelberg 2015 Plant cell reports Vol.34 No.4
<P><B><B><I>Key message</I></B></B></P><P><B>We have constructed and annotated a web-based database of over 280 Arabidopsis genes that have characterized mutants associated with Arabidopsis acyl lipid metabolism.</B></P><P><B>Abstract</B></P><P>Mutants have played a fundamental role in gene discovery and in understanding the function of genes involved in plant acyl lipid metabolism. The first mutant in Arabidopsis lipid metabolism (<I>fad4</I>) was described in 1985. Since that time, characterization of mutants in more than 280 genes associated with acyl lipid metabolism has been reported. This review provides a brief background and history on identification of mutants in acyl lipid metabolism, an analysis of the distribution of mutants in different areas of acyl lipid metabolism and presents an annotated database (ARALIPmutantDB) of these mutants. The database provides information on the phenotypes of mutants, pathways and enzymes/proteins associated with the mutants, and allows rapid access via hyperlinks to summaries of information about each mutant and to literature that provides information on the lipid composition of the mutants. In addition, the database of mutants is integrated within the ARALIP plant acyl lipid metabolism website (http://aralip.plantbiology.msu.edu) so that information on mutants is displayed on and can be accessed from metabolic pathway maps. Mutants for at least 30 % of the genes in the database have multiple names, which have been compiled here to reduce ambiguities in searches for information. The database should also provide a tool for exploring the relationships between mutants in acyl lipid-related genes and their lipid phenotypes and point to opportunities for further research.</P><P><B>Electronic supplementary material</B></P><P>The online version of this article (doi:10.1007/s00299-014-1710-8) contains supplementary material, which is available to authorized users.</P>
Abelev, B.,Adam, J.,Adamová,, D.,Aggarwal, M. M.,Rinella, G. Aglieri,Agnello, M.,Agostinelli, A.,Agrawal, N.,Ahammed, Z.,Ahmad, N.,Ahmed, I.,Ahn, S. U.,Ahn, S. A.,Aimo, I.,Aiola, S.,Ajaz, M.,Aki Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.1
<P>The production of the strange and double-strange baryon resonances ([FORMULA OMISSION], [FORMULA OMISSION]) has been measured at mid-rapidity ([FORMULA OMISSION][FORMULA OMISSION]) in proton–proton collisions at [FORMULA OMISSION] [FORMULA OMISSION] 7 TeV with the ALICE detector at the LHC. Transverse momentum spectra for inelastic collisions are compared to QCD-inspired models, which in general underpredict the data. A search for the [FORMULA OMISSION] pentaquark, decaying in the [FORMULA OMISSION] channel, has been carried out but no evidence is seen.</P>
Adam, J.,Adamová,, D.,Aggarwal, M. M.,Rinella, G. Aglieri,Agnello, M.,Agrawal, N.,Ahammed, Z.,Ahmed, I.,Ahn, S. U.,Aimo, I.,Aiola, S.,Ajaz, M.,Akindinov, A.,Alam, S. N.,Aleksandrov, D.,Alessandr Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.5
<P>The measurement of primary [FORMULA OMISSION], [FORMULA OMISSION], [FORMULA OMISSION] and [FORMULA OMISSION] production at mid-rapidity ([FORMULA OMISSION] 0.5) in proton–proton collisions at [FORMULA OMISSION][FORMULA OMISSION] 7 TeV performed with a large ion collider experiment at the large hadron collider (LHC) is reported. Particle identification is performed using the specific ionisation energy-loss and time-of-flight information, the ring-imaging Cherenkov technique and the kink-topology identification of weak decays of charged kaons. Transverse momentum spectra are measured from 0.1 up to 3 GeV/[FORMULA OMISSION] for pions, from 0.2 up to 6 GeV/[FORMULA OMISSION] for kaons and from 0.3 up to 6 GeV/[FORMULA OMISSION] for protons. The measured spectra and particle ratios are compared with quantum chromodynamics-inspired models, tuned to reproduce also the earlier measurements performed at the LHC. Furthermore, the integrated particle yields and ratios as well as the average transverse momenta are compared with results at lower collision energies.</P>
Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Adam, W.,Bergauer, T.,Dragicevic, M.,Erö,, J.,Friedl, M.,Frü,hwirth, R.,Ghete, V. M.,Hartl, C.,Hö,rmann, N.,Hrubec, J.,Jeitler, M.,Kiesenhofer, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.6
<P>The inclusive jet cross section for proton–proton collisions at a centre-of-mass energy of 7[FORMULA OMISSION] was measured by the CMS Collaboration at the LHC with data corresponding to an integrated luminosity of 5.0[FORMULA OMISSION]. The measurement covers a phase space up to 2[FORMULA OMISSION] in jet transverse momentum and 2.5 in absolute jet rapidity. The statistical precision of these data leads to stringent constraints on the parton distribution functions of the proton. The data provide important input for the gluon density at high fractions of the proton momentum and for the strong coupling constant at large energy scales. Using predictions from perturbative quantum chromodynamics at next-to-leading order, complemented with electroweak corrections, the constraining power of these data is investigated and the strong coupling constant at the Z boson mass [FORMULA OMISSION] is determined to be [FORMULA OMISSION], which is in agreement with the world average.</P>
Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Adam, W.,Bergauer, T.,Dragicevic, M.,Erö,, J.,Friedl, M.,Frü,hwirth, R.,Ghete, V. M.,Hartl, C.,Hö,rmann, N.,Hrubec, J.,Jeitler, M.,Kiesenhofer, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.4
<P>A search has been performed for long-lived particles that could have come to rest within the CMS detector, using the time intervals between LHC beam crossings. The existence of such particles could be deduced from observation of their decays via energy deposits in the CMS calorimeter appearing at times that are well separated from any proton–proton collisions. Using a data set corresponding to an integrated luminosity of 18.6[FORMULA OMISSION] of 8[FORMULA OMISSION] proton–proton collisions, and a search interval corresponding to 281 h of trigger livetime, 10 events are observed, with a background prediction of [FORMULA OMISSION] events. Limits are presented at 95 % confidence level on gluino and top squark production, for over 13 orders of magnitude in the mean proper lifetime of the stopped particle. Assuming a cloud model of R-hadron interactions, a gluino with mass [FORMULA OMISSION]1000[FORMULA OMISSION] and a top squark with mass [FORMULA OMISSION]525[FORMULA OMISSION] are excluded, for lifetimes between 1 [FORMULA OMISSION]s and 1000[FORMULA OMISSION]. These results are the most stringent constraints on stopped particles to date.</P>
Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Adam, W.,Bergauer, T.,Dragicevic, M.,Erö,, J.,Friedl, M.,Frü,hwirth, R.,Ghete, V. M.,Hartl, C.,Hö,rmann, N.,Hrubec, J.,Jeitler, M.,Kiesenhofer, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.7
<P>This paper presents distributions of topological observables in inclusive three- and four-jet events produced in pp collisions at a centre-of-mass energy of 7[FORMULA OMISSION] with a data sample collected by the CMS experiment corresponding to a luminosity of 5.1[FORMULA OMISSION]. The distributions are corrected for detector effects, and compared with several event generators based on two- and multi-parton matrix elements at leading order. Among the considered calculations, <SMALL>MADGRAPH</SMALL> interfaced with <SMALL>PYTHIA6</SMALL> displays the overall best agreement with data.</P>
Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,Adam, W.,Bergauer, T.,Dragicevic, M.,Erö,, J.,Friedl, M.,Frü,hwirth, R.,Ghete, V. M.,Hartl, C.,Hö,rmann, N.,Hrubec, J.,Jeitler, M.,Kiesenhofer, Springer Berlin Heidelberg 2015 European Physical Journal C Vol.75 No.5
<P>Properties of the Higgs boson with mass near 125[FORMULA OMISSION] are measured in proton-proton collisions with the CMS experiment at the LHC. Comprehensive sets of production and decay measurements are combined. The decay channels include [FORMULA OMISSION], [FORMULA OMISSION], [FORMULA OMISSION], [FORMULA OMISSION], [FORMULA OMISSION], and [FORMULA OMISSION] pairs. The data samples were collected in 2011 and 2012 and correspond to integrated luminosities of up to 5.1[FORMULA OMISSION] at 7[FORMULA OMISSION] and up to 19.7[FORMULA OMISSION] at 8[FORMULA OMISSION]. From the high-resolution [FORMULA OMISSION] and [FORMULA OMISSION] channels, the mass of the Higgs boson is determined to be [FORMULA OMISSION]. For this mass value, the event yields obtained in the different analyses tagging specific decay channels and production mechanisms are consistent with those expected for the standard model Higgs boson. The combined best-fit signal relative to the standard model expectation is [FORMULA OMISSION] at the measured mass. The couplings of the Higgs boson are probed for deviations in magnitude from the standard model predictions in multiple ways, including searches for invisible and undetected decays. No significant deviations are found.</P>