Refine
Language
- English (5)
Has Fulltext
- yes (5)
Is part of the Bibliography
- no (5)
Keywords
- Arizona (1)
- California (1)
- Canonical suppression (1)
- Ceratopogoninae (1)
- Colorado (1)
- Culicoidini (1)
- Hadronization (1)
- Heavy ion collisions (1)
- Idaho (1)
- Leptoconopinae (1)
Institute
The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of 𝐽/𝜓→𝑒+𝑒− at midrapidity and high transverse momentum (𝑝𝑇>5 GeV/𝑐) in 𝑝+𝑝 and central Cu+Cu collisions at √𝑠𝑁𝑁=200 GeV. The inclusive 𝐽/𝜓 production cross section for Cu+Cu collisions is found to be consistent at high 𝑝𝑇 with the binary collision-scaled cross section for 𝑝+𝑝 collisions. At a confidence level of 97%, this is in contrast to a suppression of 𝐽/𝜓 production observed at lower 𝑝𝑇. Azimuthal correlations of 𝐽/𝜓 with charged hadrons in 𝑝+𝑝 collisions provide an estimate of the contribution of 𝐵-hadron decays to 𝐽/𝜓 production of 13%±5%.
We study the beam-energy and system-size dependence of \phi meson production (using the hadronic decay mode \phi -- K+K-) by comparing the new results from Cu+Cu collisions and previously reported Au+Au collisions at \sqrt{s_NN} = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented are from mid-rapidity (|y|<0.5) for 0.4 < pT < 5 GeV/c. At a given beam energy, the transverse momentum distributions for \phi mesons are observed to be similar in yield and shape for Cu+Cu and Au+Au colliding systems with similar average numbers of participating nucleons. The \phi meson yields in nucleus-nucleus collisions, normalised by the average number of participating nucleons, are found to be enhanced relative to those from p+p collisions with a different trend compared to strange baryons. The enhancement for \phi mesons is observed to be higher at \sqrt{s_NN} = 200 GeV compared to 62.4 GeV. These observations for the produced \phi(s\bar{s}) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems.
We present the first measurements of charge-dependent correlations on angular difference variables η1 − η2 (pseudorapidity) and φ1 − φ2 (azimuth) for primary charged hadrons with transverse momentum 0.15 <= pt <= 2 GeV/c and |η| <= 1.3 from Au–Au collisions at √sNN = 130 GeV. We observe correlation structures not predicted by theory but consistent with evolution of hadron emission geometry with increasing centrality from one-dimensional fragmentation of color strings along the beam direction to an at least two-dimensional hadronization geometry along the beam and azimuth directions of a hadron-opaque bulk medium.
Background: Febrile neutropenia is a frequently occurring and occasionally life-threatening complication of treatment for childhood cancer. Many biomarkers have been proposed as predictors of adverse events. We aimed to undertake a systematic review and meta-analysis to summarize evidence on the discriminatory ability of initial serum biomarkers of febrile neutropenic episodes in children and young people.
Methods: This review was conducted in accordance with the Center for Reviews and Dissemination Methods, using three random effects models to undertake meta-analysis. It was registered with the HTA Registry of systematic reviews, CRD32009100485.
Results: We found that 25 studies exploring 14 different biomarkers were assessed in 3,585 episodes of febrile neutropenia. C-reactive protein (CRP), pro-calcitonin (PCT), and interleukin-6 (IL6) were subject to quantitative meta-analysis, and revealed huge inconsistencies and heterogeneity in the studies included in this review. Only CRP has been evaluated in assessing its value over the predictive value of simple clinical decision rules.
Conclusions: The limited data available describing the predictive value of biomarkers in the setting of pediatric febrile neutropenia mean firm conclusions cannot yet be reached, although the use of IL6, IL8 and procalcitonin warrant further study.
Leptoconops Skuse and Culicoides Latreille (Diptera: Ceratopogonidae) biting midges are serious pests of mammals, birds, and reptiles and important vectors of viruses, protozoans, and filarial nematodes. Their collection became an important adjunct to mosquito surveillance using light-baited and CO2-baited suction traps in Grand County, Utah, United States, during 1999–2016. During 2017–2020, collecting was expanded to California, Nevada, Idaho, Wyoming, Colorado, Arizona, New Mexico, and other parts of Utah using an ultraviolet light suction trap. As a result, five species of Leptoconops and 59 species of Culicoides, representing Leptoconops subgenera Holoconops Kieffer and Leptoconops Skuse, Culicoides subgenera Amossovia Glukhova, Beltranmyia Vargas, Diphaomyia Vargas, Drymodesmyia Vargas, Haematomyidium Goeldi, Monoculicoides Khalaf, Selfia Khalaf, Sensiculicoides Shevchenko, Silvaticulicoides Glukhova, Silvicola Mirzaeva and Isaev, and Wirthomyia Vargas, and the Culicoides Leoni, Limai, Palmerae, Piliferus, Saundersi, and Stonei species groups, were collected. Keys to adult males and females and tables of diagnostic characters are provided for identification of 15 species of Leptoconops and 86 species of Culicoides collected, reported by others, or likely to occur in the Southwestern United states west of the Continental Divide. Description references, synonymies, diagnoses, geographic and seasonal distributions, and biological summaries from the available literature are provided. Data on relative abundance in light-baited or CO2-baited traps are provided for the species collected. Intersex specimens and specimens parasitized by mites or mermithid nematodes are tabulated. Culicoides (Drymodesmyia) bakeri Vargas is reported from California (new United States record). New state records of other species for Idaho, Nevada, Utah, Colorado, Arizona, and New Mexico of the United States and for the Mexico states of Puebla, San Luis Potosi, and Oaxaca are reported. Culicoides salihi Khalaf is assigned to the subgenus Diphaomyia of Culicoides (new status). Culicoides stellifer (Coquillett) is reassigned to the subgenus Haematomyidium of Culicoides (new status). Culicoides travisi Vargas is assigned to the subgenus Sensiculicoides of Culicoides (new status). Culicoides luglani Jones and Wirth is reassigned to the Culicoides Limai group (new status). Confusion over species limits was evident between Culicoides cacticola Wirth and Hubert and Culicoides torridus Wirth and Hubert, between C. travisi and Culicoides kibunensis Tokunaga, between Culicoides doeringae Atchley and Culicoides lophortygis Atchley and Wirth, between Culicoides owyheensis Jones and Wirth and Culicoides mortivallis Wirth and Blanton, and between Culicoides cockerellii (Coquillett), Culicoides neomontanus Wirth, and Culicoides sierrensis Wirth and Blanton. Several new species, hybrids, or variants of Culicoides are diagnosed but not formally described: two of subgenus Silvicola, one of the Palmerae group, two of the Piliferus group, and one unplaced to subgenus or species group.
ZooBank registration. urn:lsid:zoobank.org:pub:CBD29188-143B-44DF-BE21-1654D50D8621