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118 papers found.
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Challenges and opportunities for heavy scalar searches in the \( t\overline{t} \) channel at the LHC

Heavy scalar and pseudoscalar resonance searches through the \( gg\to S\to t\overline{t} \) process are challenging due to the peculiar behavior of the large interference effects with the standard model \( t\overline{t} \) background. Such effects generate non-trivial lineshapes from additional relative phases between the signal and background amplitudes. We provide the analytic ...

Microdissection of the Ah01 chromosome in upland cotton and microcloning of resistance gene anologs from the single chromosome

Background Chromosome microdissection is one of the most important techniques in molecular cytogenetic research. Cotton (Gossypium Linnaeus, 1753) is the main natural fiber crop in the world. The resistance gene analog (RGA) cloning after its single chromosome microdissection can greatly promote cotton genome research and breeding. Results Using the linker adaptor PCR (LA-PCR) with ...

The Interactive Effects of Age and PICALM rs541458 Polymorphism on Cognitive Performance, Brain Structure, and Function in Non-demented Elderly

The PICALM rs541458 T allele has been recognized as a risk factor for late-onset Alzheimer’s disease, and age might modulate the effects that genetic factors have on cognitive functions and brain. Thus, the current study intended to examine whether the effects of rs541458 on cognitive functions, brain structure, and function were modulated by age in non-demented Chinese elderly. We ...

Intraoperative mechanical ventilation strategies in patients undergoing one-lung ventilation: a meta-analysis

Background Postoperative pulmonary complications (PPCs), which are not uncommon in one-lung ventilation, are among the main causes of postoperative death after lung surgery. Intra-operative ventilation strategies can influence the incidence of PPCs. High tidal volume (V T) and increased airway pressure may lead to lung injury, while pressure-controlled ventilation and ...

Measurement to radius of Newton’s ring fringes using polar coordinate transform

Background Newton’s ring method is often used to measure many physical parameters. And some measured physical quantity can be extracted by calculating the radius parameter of circular fringes from Newton's ring configuration. Methods The paper presents a new measuring method for radius of circular fringes, which includes three main steps, i.e., determination of center coordinates ...

Heavy Higgs bosons and the 2 TeV W ′ boson

The hints from the LHC for the existence of a W ′ boson of mass around 1.9 TeV point towards a certain SU(2) L × SU(2) R × U(1) B−L gauge theory with an extended Higgs sector. We show that the decays of the W ′ boson into heavy Higgs bosons have sizable branching fractions. Interpreting the ATLAS excess events in the search for same-sign lepton pairs plus b jets as arising from W ′ ...

The fate of long-lived superparticles with hadronic decays after LHC Run 1

Supersymmetry searches at the LHC are both highly varied and highly constraining, but the vast majority are focused on cases where the final-stage visible decays are prompt. Scenarios featuring superparticles with detector-scale lifetimes have therefore remained a tantalizing possibility for sub-TeV SUSY, since explicit limits are relatively sparse. Nonetheless, the extremely low ...

Interaction between RNA helicase ROOT INITIATION DEFECTIVE 1 and GAMETOPHYTIC FACTOR 1 is involved in female gametophyte development in Arabidopsis

ROOT INITIATION DEFECTIVE 1 (RID1) is an Arabidopsis DEAH/RHA RNA helicase. It functions in hypocotyl de-differentiation, de novo meristem formation, and cell specification of the mature female gametophyte (FG). However, it is unclear how RID1 regulates FG development. In this study, we observed that mutations to RID1 disrupted the developmental synchrony and retarded the ...

Ursolic acid synergistically enhances the therapeutic effects of oxaliplatin in colorectal cancer

GUIDELINES Jianzhen Shan, Yanyan Xuan, Qi Zhang, Chunpeng Zhu, Zhen Liu, and Suzhan Zhang declare that they have no conflict of interest. All institutional and national guidelines for the care and use of

Comparison of rabbit rib defect regeneration with and without graft

Rib segment, as one of the most widely used autologous boneresources for bone repair, is commonly isolated with an empty left in the defect. Although defective rib repair is thought to be unnecessary traditionally, it’s of vital importance actually to promote rib regeneration for patients with better postoperative recovery and higher life quality. Comparative investigations on ...

Beyond Higgs couplings: probing the Higgs with angular observables at future e + e − colliders

We study angular observables in the \( {e}^{+}{e}^{-}\to ZH\to {\ell}^{+}{\ell}^{-}b\overline{b} \) channel at future circular e + e − colliders such as CEPC and FCC-ee. Taking into account the impact of realistic cut acceptance and detector effects, we forecast the precision of six angular asymmetries at CEPC (FCC-ee) with center-of-mass energy \( \sqrt{s}=240 \) GeV and 5 (30) ...

Reproducibility of image-based computational models of intracranial aneurysm: a comparison between 3D rotational angiography, CT angiography and MR angiography

Background Reconstruction of patient-specific biomechanical model of intracranial aneurysm has been based on different imaging modalities. However, different imaging techniques may influence the model geometry and the computational fluid dynamics (CFD) simulation. The aim of this study is to evaluate the differences of the morphological and hemodynamic parameters in the ...

Clinicopathological features and prognosis of gastric cancer in young patients

Background The clinicopathological features and prognosis of gastric cancer in young patients are both limited and controversial. Therefore, the aim of this study was to define the clinicopathological features and prognosis of gastric cancer in young patients after curative resection. Methods From May 2008 to December 2014, 198 young patients (age ≤ 40 years) and 1096 middle-aged ...

Comparison on the status of vitamin A in 6- to 13- year-old children between 2002 and 2012 in China

Background Vitamin A deficiency is recognized as a major public-health nutrition issue in the developing countries. Limited hospital sources and sample sizes are available in most of the existing studies associated with healthy school-age children. The aim of this study was to compare vitamin A status of 6- to 13-year-old healthy children in China between 2002 and 2012. Methods ...

Fibre elongation requires normal redox homeostasis modulated by cytosolic ascorbate peroxidase in cotton (Gossypium hirsutum)

High-quality cotton fibre equates to a more comfortable textile. Fibre length is an important index of fibre quality. Hydrogen peroxide (H2O2) acts as a signalling molecule in the regulation of fibre elongation. Results from in vitro ovule culture suggest that the alteration of fibre cell H2O2 levels affects fibre development. Ascorbate peroxidase (APX) is an important reactive ...

CDK4 and miR-15a comprise an abnormal automodulatory feedback loop stimulating the pathogenesis and inducing chemotherapy resistance in nasopharyngeal carcinoma

Background In previous investigation, we reported that stably knocking down cyclin-dependent kinase 4(CDK4) induced expression of let-7c, which further suppressed cell cycle transition and cell growth by modulating cell cycle signaling in nasopharyngeal carcinoma (NPC). In this study, we further explored the molecular function and mechanism of CDK4 modulating miRNAs to stimulate ...

The length of proximal margin does not influence the prognosis of Siewert type II/III adenocarcinoma of esophagogastric junction after transhiatal curative gastrectomy

Background The optimal length of proximal margin for Siewert type II/III adenocarcinoma of the esophagogastric junction (AEJ) is still need to be clarified. The aim of the present study was to investigate the appropriate length of proximal margin for Siewert type II/III AEJ through transhiatal approach. Methods From September 2009 to December 2014, a total of 693 consecutive ...

Effects of p21 Gene Down-Regulation through RNAi on Antler Stem Cells In Vitro

Cell cycle is an integral part of cell proliferation, and consists mainly of four phases, G1, S, G2 and M. The p21 protein, a cyclin dependent kinase inhibitor, plays a key role in regulating cell cyclevia G1 phase control. Cells capable of epimorphic regeneration have G2/M accumulation as their distinctive feature, whilst the majority of somatic cells rest at G1 phase. To ...

Prevalence and influence factors of vitamin A deficiency of Chinese pregnant women

Background Vitamin A plays an important role in the periods of rapid cellular growth and differentiation, especially during pregnancy, which is supplied by the mother to the fetus. The aim of this study is to assess the prevalence and potential influence factors of prenatal VAD of Chinese pregnant women. Methods China National Nutrition and Health Survey 2010–2013(CHNNS2010–2013) ...

Quantitative research into the deconditioning of hemodynamic to disorder of consciousness carried out using transcranial Doppler ultrasonography and photoplethysmography obtained via finger-transmissive absorption

In this study, transcranial Doppler ultrasonography (TCD) and photoplethysmography (PPG) have been utilized, through the observation of peripheral and cerebrovascular hemodynamic changes of the disorder of consciousness (DOC) patients, measured on clinical behavior scale of Coma Recovery Score-Revised (CRS-R) to obesrve their diagnostic value in evaluation of DOC patients. TCD ...