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122 papers found.
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Research on calibrating rock mechanical parameters with a statistical method

Research on the modeling of rock mechanics parameters is of great significance to the exploration of oil and gas. The use of logging data with the Kriging interpolation to study rock mechanics parameters has been proven to be effective in reservoir prediction and other oilfield applications and can provide additional data. However, there will sometimes be a great deviation due to ...

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 ...

Aldehyde dehydrogenase 1 (ALDH1) isoform expression and potential clinical implications in hepatocellular carcinoma

, Xiao-guang Liu. Resources: Ting-dong Yu, Jian-lu Huang. Software: Cheng-kun Yang, Xiang-kun Wang, Wei Qin, Kai-yin Xiao. Validation: Zhen Liu. Visualization: Si-cong Lu. Writing ± original draft

Unscented Kalman Filter-Trained Neural Networks for Slip Model Prediction

The purpose of this work is to investigate the accurate trajectory tracking control of a wheeled mobile robot (WMR) based on the slip model prediction. Generally, a nonholonomic WMR may increase the slippage risk, when traveling on outdoor unstructured terrain (such as longitudinal and lateral slippage of wheels). In order to control a WMR stably and accurately under the effect of ...

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 ...

Role of BmDredd during Apoptosis of Silk Gland in Silkworm, Bombyx mori

Silk glands (SGs) undergo massive apoptosis driven degeneration during the larval-pupal transformation. To better understand this event on molecular level, we investigated the expression of apoptosis-related genes across the developmental transition period that spans day 4 in the fifth instar Bombyx mori larvae to day 2 pupae. Increases in the expression of BmDredd (an initiator ...

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 ...

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

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 ...

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) ...

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 ...

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 ...

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 ...

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 ...

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 ...