We study the expected experimental mass distributions of dijet resonances from excited quarks in proton-proton collisions at energies s = 13, 14, 27, 100, 300, and 500 TeV. We explore in detail the ...expected shapes at both the generator and experimental levels, and identify within the distributions the effects of the excited quark natural width, parton momentum distributions of the proton, radiation, and experimental resolution. We present both differential and cumulative probability distributions as a function of dijet mass, and the signal acceptance of a window in dijet mass centered on each resonance. We find that for a range of resonance masses, between 10% and 50% of s, the dijet mass distributions and window acceptance are practically universal, approximately invariant under changes in resonance mass and s. This universality is violated when the resonance mass reaches 60% of s, because the steepness of the parton momentum distributions of the proton produces a significant tail at low dijet mass. This work supports our Snowmass 2021 study on the sensitivity to dijet resonances at proton-proton colliders.
We study the expected experimental mass distributions of dijet resonances from excited quarks in proton-proton collisions at energies \(\sqrt{s}=\) 13, 14, 27, 100, 300, and 500 TeV. We explore in ...detail the expected shapes at both the generator and experimental levels, and identify within the distributions the effects of the excited quark natural width, parton momentum distributions of the proton, radiation, and experimental resolution. We present both differential and cumulative probability distributions as a function of dijet mass, and the signal acceptance of a window in dijet mass centered on each resonance. We find that for a range of resonance masses, between 10\% and 50\% of \(\sqrt{s}\), the dijet mass distributions and window acceptance are practically universal, approximately invariant under changes in resonance mass and \(\sqrt{s}\). This work supports our Snowmass 2021 study on the sensitivity to dijet resonances at proton-proton colliders.
A significant benchmark for discovery at a proton-proton collider is the sensitivity to a dijet resonance, X, the intermediate state of the s-channel process \(pp \rightarrow X \rightarrow 2\mbox{ ...jets}\). To probe the highest resonance masses, hadron collider experiments have used the classic technique of searching for bumps in the mass spectrum of two individually resolved jets. In this Snowmass 2021 study, we explore the search sensitivity to multiple benchmark models of dijet resonances at current and future proton-proton colliders. We present the expected masses for \(5\sigma\) discovery and 95\% confidence level exclusion of diquarks, colorons, excited quarks, \(W^{\prime}s\), \(Z^{\prime}s\) and Randall-Sundrum gravitons, resulting from accumulation of integrated luminosities between 10 and \(10^5\) fb\(^{-1}\), at proton-proton colliders operating at energies \(\sqrt{s}=\) 13, 14, 27, 75, 100, 150, 300 and 500 TeV.
Coronavirus disease 2019 (COVID-19) primarily affects adults and spares children, whereas very little is known about neonates. We tried to define the clinical characteristics, risk factors, ...laboratory, and imagining results of neonates with community-acquired COVID-19.
This prospective multicentered cohort study included 24 neonatal intensive care units around Turkey, wherein outpatient neonates with COVID-19 were registered in an online national database. Full-term and premature neonates diagnosed with COVID-19 were included in the study, whether hospitalized or followed up as ambulatory patients. Neonates without severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) via reverse transcriptase-polymerase chain reaction testing or whose mothers had been diagnosed with COVID-19 during pregnancy were excluded.
Thirty-seven symptomatic neonates were included. The most frequent findings were fever, hypoxemia, and cough (49%, 41%, 27%, respectively). Oxygen administration (41%) and noninvasive ventilation (16%) were frequently required; however, mechanical ventilation (3%) was rarely needed. Median hospitalization was 11 days (1-35 days). One patient with Down syndrome and congenital cardiovascular disorders died in the study period. C-reactive protein (CRP) and prothrombin time (PT) levels were found to be higher in patients who needed supplemental oxygen (0.9 0.1-8.6 vs. 5.8 0.3-69.2 p = 0.002, 11.9 10.1-17.2 vs. 15.2 11.7-18.0 p = 0.01, respectively) or who were severe/critical (1.0 0.01-8.6 vs. 4.5 0.1-69.2 p = 0.01, 11.7 10.1-13.9 vs. 15.0 11.7-18.0 p = 0.001, respectively).
Symptomatic neonates with COVID-19 had high rates of respiratory support requirements. High CRP levels or a greater PT should alert the physician to more severe disease.
Mononuclear NiL complex was prepared by the use of bis-N,N'-salicylidene-1,3-propanediamine and Ni(II) salts. NiL was treated with ZnBr2 and pyrazole and 3,5-lutidine coligands in a dioxane medium to ...prepare the following diheteronuclear complexes: NiL·ZnBr2·(pyrazole)2 and NiL·ZnBr2·(3,5-lutidine)2. The complexes were characterized by elemental analysis, TG, IR and mass spectrometry. The effects of heterocyclic one- and two- nitrogen atoms containing co-ligands were also examined. Theoretical formation enthalpies, dipole moments and the relative levels of HOMO and LUMO energies were determined by the use of Gaussian09 program. The occupancy levels of the atomic orbitals were determined by the NBO analysis of Gaussian09. The effect of pyrazole and lutidine upon the complex formation was evaluated by the use of X-ray diffraction, TG and theoretical calculations. NiL complex with lutidine forms a square pyramidal conformation since lutidine is a much stronger coligand than pyrazole.
Three new nitrogen-rich energetic compounds, N-(5-chloro-2,4-dinitrophenyl)hydrazine (1), N-(5-chloro-2,4-dinitrophenyl)guanidine (2) and N-(5-chloro-2,4-dinitrophenyl)-4-aminopyrazole (3) prepared ...by the nucleophilic substitution reaction of 1,3-dichloro-4,6-dinitrobenzene with hydrazine, guanidinium carbonate and 4-aminopyrazole. The compounds were characterized by 1H NMR, 13C NMR, IR and mass spectroscopy. Only compound 2 could be prepared in a suitable crystal and molecular model was determined by X-ray analysis. Compounds were investigated by TG and DSC. Thermal degradation and thermokinetic behavior were investigated by Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose techniques. Compounds were observed to be prone to exothermical thermal decomposition. HOMO and LUMO levels, theoretical formation enthalpy and electrostatic maps were calculated by Gaussian09. The detonation velocity and pressure were calculated by Kamlet-Jacobs equation. The compounds were assayed for antimicrobial properties.
NiL.MX2 heterodinuclear complexes with a nuclear structure of NiII-MII (M = Zn, Cd, X = Cl, Br, I) were prepared in the dioxane medium by the use of an ONNO type ligand, ...Bis-N,N′(salicylidene)-1,3-propanediamine (LH2). The complexes prepared were characterized by the use of infrared (IR) spectroscopy, thermogravimetry (TG), semi-micro nitrogen, metal and halogen analysis. The molecular structures and unit cell properties of the compounds were elucidated by the X-ray diffraction (XRD) method. In parallel to the literature, MX2 group was observed to form μ‒ bridges with the phenolic oxygens of the organic ligand. The coordination sphere of NiL heterodinuclear complex in NiL group was observed to change depending upon the electronegativities of the atoms in MX2 group. The electronegativities of the atoms in the MX2 group affect the coordination sphere of NiL group of the heterodinuclear complex, and in parallel with the electronegativities of the atoms in MX2 group, it was observed that NiL unit coordinated the solvent molecules and the coordination sphere changed. In addition to this, the coordination bonds get smaller as the number of donor atoms nearby NiL decreased. Using Gaussian 09 software, the theoretical bond lengths and bond angles were calculated and compared with the experimental data. With Gaussian 09 software, it was determined how the occupancy levels of d orbitals of the metal atoms changed by coordination of Ni(II) ion. Also, the change of the differences between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) levels of the complexes was monitored.
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•Ni(II) complex of ONNO type LH2 ligand has a square planar coordination sphere.•Zn(II) and Cd(II) halides are coordinated to NiL by μ-bridge over phenolic oxygen.•The electronegativity of atom in the halide affects the coordination sphere of NiL.•If ZnCl2 or ZnBr2 is attached, the coordination sphere is inevitable octahedral.•If CdI2 is attached, the coordination sphere remains as a square pyramidal.
Craniopharyngiomas (CPG) have complex challenges in treatment due to their proximity to vital structures, surgical and radiotherapeutic complexities, and the tendency for recurrence. This study aims ...to identify the prevalence of endocrine and metabolic comorbidities observed during initial diagnosis and long-term follow-up in a nationwide cohort of pediatric CPG patients. The study also highlights the associated difficulties in their management.
Sixteen centers entered 152 patients into the ÇEDD NET data system. We evaluated the clinical and laboratory characteristics at presentation, administered treatments, accompanying endocrine, metabolic, and other system involvements, and the patient's follow-up features.
Of the evaluated patients, 64 were female, and 88 were male. At presentation, the mean age was 9.1 ± 3.67 (min:1.46-max:16.92) years. The most common complaints at presentation were headache (68.4%), vision problems (42%), short stature (15%), nausea and vomiting (7%). The surgical procedure applied to the patients was gross total resection (GTR) in 97 cases (63.8%) and subtotal resection in 55 cases (36.2%). Radiotherapy was initiated in 11.8% of the patients. In the pathological examination, 92% of the cases were adamantinamatous type, 8% were papillary type. Postoperatively, hormone deficiencies consisted of thyroid-stimulating hormone (92.1%), adrenocorticotropic hormone (81%), antidiuretic hormone (79%), growth hormone (65.1%), and gonadotropin (43.4%) deficiencies. Recombinant growth hormone treatment (rhGH) was initiated on 27 patients. The study showed hesitancy among physicians regarding rhGH. The median survival without relapse was 2.2 years. Median time of relapse was 1.82 years (range: 0.13-10.35 years). Relapse was related to longer follow-ups and reduced GTR rates. The median follow-up time was 3.13 years. Among the last follow-up visits, the prevalence of obesity was 38%, but of these, 46.5% were already obese at diagnosis. However, 20% who were not obese at baseline became obese on follow-up. Permanent visual impairment was observed in 26 patients, neurological deficits in 13 patients, and diabetes mellitus in 5 patients.
Recurrence was predominantly due to incomplete resection and the low rate of postoperative radiotherapy. It also emphasized challenges in multidisciplinary regular follow ups and suggested early interventions such as dietary restrictions and increased exercise to prevent obesity.
The VoIP switch, that Netas is responsible for the R&D, provided integration between TDM customers and new fashion IP Technologies. Moreover, the switch has "independence from location" feature, via ...this solution. In this work, we share our experience and talk about efficiency gained with Multi Country VoIP Switch solution that is used to manage capacity increase and IP service diversity on international switches.
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