Advanced search    

Search: authors:"Li Zhang"

1,091 papers found. Showing first 1,000 results.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Choice revision

Journal of Logic, Language and Information pp 1–23 | Cite as Choice revision AuthorsAuthors and affiliations Li Zhang Open Access Article First Online: 14 March 2019 85 Downloads

New versions of the Hestenes-Stiefel nonlinear conjugate gradient method based on the secant condition for optimization

Based on the secant condition often satisfied by quasi-Newton methods, two new versions of the Hestenes-Stiefel (HS) nonlinear conjugate gradient method are proposed, which are descent methods even with inexact line searches. The search directions of the proposed methods have the form dk = - θkgk + βkHSdk-1, or dk = -gk + βkHSdk-1+ θkyk-1. When exact line searches are used, the...

Improved simulation of carbon and water fluxes by assimilating multi-layer soil temperature and moisture into process-based biogeochemical model

BackgroundSoil temperature and moisture are sensitive indicators in soil organic matter decomposition because they control global carbon and water cycles and their potential feedback to climatic variations. Although the Biome-Biogeochemical Cycles (Biome-BGC) model is broadly applied in simulating forest carbon and water fluxes, its single-layer soil module cannot represent...

Role of physical performance measures for identifying functional disability among Chinese older adults: Data from the China Health and Retirement Longitudinal Study

. Relevant dataset underlying the findings described in manuscript. (RAR) S2 File. The codebook of the dataset. (PDF) Acknowledgments Author Contributions Conceptualization: Li Zhang, Linwen Guo. Data

A Preliminary Study of Uric Metabolomic Alteration for Postpartum Depression Based on Liquid Chromatography Coupled to Quadrupole Time-of-Flight Mass Spectrometry

Academic Editor: Hubertus Himmerich Copyright © 2019 Li Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution

H19 potentiates let-7 family expression through reducing PTBP1 binding to their precursors in cholestasis

of Physiology and Neurobiology, Institute for Systems Genomics, University of Connecticut, Storrs, CT, 06269, USAJianguo Wu AuthorsSearch for Li Zhang in:Nature Research journals • PubMed • Google

GPAA1 promotes gastric cancer progression via upregulation of GPI-anchored protein and enhancement of ERBB signalling pathway

Gastric cancer is one of the deadliest malignant tumours, with a high incidence in China, and is regulated by aberrantly overexpressed oncogenes. However, existing therapies are insufficient to meet patients’ needs; thus, the identification of additional therapeutic targets and exploration of the underlying mechanism are urgently needed. GPAA1 is the subunit of the GPI...

Expression of cancer–testis antigens in esophageal cancer and their progress in immunotherapy

PurposeEsophageal cancer is a common disease in China with low survival rate due to no obvious early symptoms and lack of effective screening strategies. Traditional treatments usually do not produce desirable results in patients with advanced esophageal cancer, so immunotherapy which relies on tumor-related antigens is needed to combat low survival rates effectively. Cancer...

Association between gaseous pollutants and emergency ambulance dispatches for asthma in Chengdu, China: a time-stratified case-crossover study

ObjectivesThe association between concentrations of sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), ozone (O3), and emergency ambulance dispatches (EADs) for asthma was explored in the central Sichuan Basin of southwestern China for the first time.MethodsEADs for asthma were collected from the Chengdu First-Aid Command Center. Pollutant concentrations were...

The inhibition of miR-126 in cell migration and invasion of cervical cancer through regulating ZEB1

Cervical cancer is a malignancy that’s common in female with high incidence and mortality worldwide. MicroRNAs (miRNAs) act a pivotal part in human cancer development. Our aim was to investigate the effect of miR-126 on cervical cancer and its underlying molecular mechanism. Firstly, RT-qPCR assay revealed that the expression of miR-126 was significantly downregulated in cervical...

Changes in ankle joint alignment after proximal fibular osteotomy

. Author Contributions Conceptualization: Yingze Zhang. Data curation: Li Zhang, Weichong Dong. Formal analysis: Li Zhang, Wei Chen, Weichong Dong. Investigation: Wei Chen. Methodology: Jialiang Guo, Wei ... Chen. Project administration: Li Zhang, Di Qin, Wei Chen. Resources: Weichong Dong. 10 / 11 Software: Jialiang Guo, Wei Chen. Supervision: Di Qin, Zhiyong Hou, Yingze Zhang. Validation: Zhiyong Hou

Experimental Study on Constant-Amplitude Fatigue Performance of Weld Toe in Steel Tube of Welded Hollow Spherical Joints in Grid Structures

2018; Accepted 8 January 2019; Published 22 January 2019 Academic Editor: Raffaele Sepe Copyright © 2019 Jian-li Zhang et al. This is an open access article distributed under the Creative Commons

Which is the optimal immunotherapy for advanced squamous non-small-cell lung cancer in combination with chemotherapy: anti-PD-1 or anti-PD-L1?

Recent randomized phase III trials (KEYNOTE-407 and IMpower131) reported that adding anti-programmed death (ligand) 1 (anti-PD-(L)1) antibodies in combination with taxane-platinum improve the therapeutic efficacy for advanced squamous non-small-cell lung cancer (NSCLC). However, there is no head-to-head comparison of pembrolizumab (anti-PD-1) plus chemotherapy vs. atezolizumab...

Size-dependent cytotoxicity of silver nanoparticles to Azotobacter vinelandii: Growth inhibition, cell injury, oxidative stress and internalization

Zhang, Lingli Wu, Kunhui Shu. Methodology: Li Zhang. Resources: Youbin Si. Supervision: Youbin Si. 14 / 18 Writing – original draft: Li Zhang. Writing – review & editing: Li Zhang, Youbin Si. 15 / 18 ... be internalizated in cells. Acknowledgments This work was supported by the National Natural Science Foundation of China [grant numbers 41430752, 41471405]. Author Contributions Investigation: Li

Topological evolution of coexpression networks by new gene integration maintains the hierarchical and modular structures in human ancestors

We analyze the global structure and evolution of human gene coexpression networks driven by new gene integration. When the Pearson correlation coefficient is greater than or equal to 0.5, we find that the coexpression network consists of 334 small components and one “giant” connected subnet comprising of 6317 interacting genes. This network shows the properties of power-law...

Genetic diversity and phylogeny in Hystrix (Poaceae, Triticeae) and related genera inferred from Giemsa C-banded karyotypes

The phylogenetic relationships of 15 taxa from Hystrix and the related genera Leymus (NsXm), Elymus (StH), Pseudoroegneria (St), Hordeum (H), Psathyrostachys (Ns), and Thinopyrum (E) were examined by using the Giemsa C-banded karyotype. The Hy. patula C-banding pattern was similar to those of Elymus species, whereas C-banding patterns of the other Hystrix species were similar to...

Spironolactone alleviates diabetic nephropathy through promoting autophagy in podocytes

PurposePodocytes are terminally differentiated cells lining the Bowman’s capsule. Podocytes are critical for the proper glomerular filtration barrier function. At the same time, autophagy is crucial for maintaining podocyte homeostasis and insufficient autophagy could cause podocyte loss and proteinuria that is commonly observed in diabetic nephropathy (DN).MethodsIn this study...

Neural Personalized Ranking via Poisson Factor Model for Item Recommendation

Recommender systems have become indispensable for online services since they alleviate the information overload problem for users. Some work has been proposed to support the personalized recommendation by utilizing collaborative filtering to learn the latent user and item representations from implicit interactions between users and items. However, most of existing methods...

The value of oral contrast ultrasonography in the diagnosis of gastric cancer in elderly patients

This study aims to investigate the value of oral contrast ultrasonography (OCUS) in the diagnosis of gastric cancer in elderly patients. OCUS data obtained from patients ≥ 60 years old were retrospectively analyzed and compared with gastroscopy results. Among the 12,716 subjects examined by OCUS, 5021 subjects were ≥ 60 years old, which accounted for 39.48% (5021/12,716...

Cytokine profiling reveals increased serum inflammatory cytokines in idiopathic choroidal neovascularization

The exact pathogenesis of idiopathic choroidal neovascularization (ICNV) remains unclear. Cytokine-mediated inflammation has been thought to be involved in the pathophysiology of ICNV. The purpose of this study was to investigate serum cytokine profiles in patients with ICNV and to explore the relationship between serum cytokine levels and ICNV severity. This case-control study...