keyword
MENU ▼
Read by QxMD icon Read
search

Beijing

keyword
https://www.readbyqxmd.com/read/29342262/preliminary-study-of-1940-nm-thulium-laser-usage-in-peroral-endoscopic-myotomy-for-achalasia
#1
J Liu, Y Jiao, Y Niu, L Yu, M Ji, S Zhang
Esophageal achalasia is a type of motility disorder characterized by incomplete relaxation of lower esophageal sphincter (LES) and absence of esophageal peristalsis. Peroral endoscopic myotomy (POEM) is a new treatment option for achalasia that is less invasive, more effective, and safe as compared to surgery. High-frequency electrotome is commonly used in POEM, but takes longer time to make the tunnel in the esophagus and causes many complications. The thulium laser decreases the risk of bleeding and perforation in endoscopy but has not been reported in digestive diseases, especially in POEM...
January 9, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29338791/associations-of-the-hypertension-related-single-nucleotide-polymorphism-rs11191548-with-high-density-lipoprotein-cholesterol-and-leptin-in-chinese-children
#2
Lijun Wu, Liwang Gao, Xiaoyuan Zhao, Meixian Zhang, Jianxin Wu, Jie Mi
BACKGROUND: The genome-wide association study has founded hypertension-related single nucleotide polymorphism (SNP) rs11191548 near CYP17A1 encoding a key enzyme involved in steroid metabolism, but the molecular mechanisms are not understood and the associations of the SNP with hypertension-related traits are not fully described, especially in children. The aim of the present study is to investigate the associations between the SNP and two hypertension-related traits, lipids and leptin...
January 16, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29338766/identification-of-differentially-expressed-genes-and-pathways-for-intramuscular-fat-metabolism-between-breast-and-thigh-tissues-of-chickens
#3
Huanxian Cui, Maiqing Zheng, Guiping Zhao, Ranran Liu, Jie Wen
BACKGROUND: Intramuscular fat (IMF) is one of the important factors influencing meat quality, however, for chickens, the molecular regulatory mechanisms underlying this trait have not yet been clear. In this study, a systematic identification of differentially expressed genes (DEGs) and molecular regulatory mechanism related to IMF metabolism between Beijing-you chicken breast and thigh at 42 and 90 days of age was performed. RESULTS: IMF contents, Gene Ontology (GO) terms, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were analyzed, The results showed that both IMF contents in breast at 42 and 90 d were significantly lower (P < 0...
January 16, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29337319/the-effects-of-interaction-between-particulate-matter-and-temperature-on-mortality-in-beijing-china
#4
Lin Tian, Fengchao Liang, Qun Guo, Shi Chen, Shengning Xiao, Ziting Wu, Xiaobin Jin, Xiaochuan Pan
BACKGROUND: the effects of interaction between temperature and inhalable particulate matter (aerodynamic diameter < 10 μm, PM10) on mortality have been examined in some previous studies, but the results were inconsistent. This study aims to explore whether the effects of PM10 on daily non-accidental, cardiovascular and respiratory mortality were modified by temperature levels in Beijing from 2006 to 2009. METHODS: we applied a bivariate response surface model and temperature-stratified model based on time-series Poisson generalized additive models (GAMs) to examine the interactive effects in single- and two-pollutant models...
January 16, 2018: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29335873/agricultural-non-point-source-pollution-management-in-a-reservoir-watershed-based-on-ecological-network-analysis-of-soil-nitrogen-cycling
#5
Wen Xu, Yanpeng Cai, Qiangqiang Rong, Zhifeng Yang, Chunhui Li, Xuan Wang
The Miyun Reservoir plays a pivotal role in providing drinking water for the city of Beijing. In this research, ecological network analysis and scenario analysis were integrated to explore soil nitrogen cycling of chestnut and Chinese pine forests in the upper basin of the Miyun Reservoir, as well as to seek favorable fertilization modes to reduce agricultural non-point source pollution. Ecological network analysis results showed that (1) the turnover time was 0.04 to 0.37 year in the NH4+ compartment and were 15...
January 15, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29335553/mutations-in-ppe38-block-pe_pgrs-secretion-and-increase-virulence-of-mycobacterium-tuberculosis
#6
Louis S Ates, Anzaan Dippenaar, Roy Ummels, Sander R Piersma, Aniek D van der Woude, Kim van der Kuij, Fabien Le Chevalier, Dulce Mata-Espinosa, Jorge Barrios-Payán, Brenda Marquina-Castillo, Carolina Guapillo, Connie R Jiménez, Arnab Pain, Edith N G Houben, Robin M Warren, Roland Brosch, Rogelio Hernández-Pando, Wilbert Bitter
Mycobacterium tuberculosis requires a large number of secreted and exported proteins for its virulence, immune modulation and nutrient uptake. Most of these proteins are transported by the different type VII secretion systems1,2. The most recently evolved type VII secretion system, ESX-5, secretes dozens of substrates belonging to the PE and PPE families, which are named for conserved proline and glutamic acid residues close to the amino terminus3,4. However, the role of these proteins remains largely elusive 1 ...
January 15, 2018: Nature Microbiology
https://www.readbyqxmd.com/read/29335169/seasonal-variations-in-fine-particle-composition-from-beijing-prompt-oxidative-stress-response-in-mouse-lung-and-liver
#7
Michal Pardo, Fanfan Xu, Xinghua Qiu, Tong Zhu, Yinon Rudich
Exposure to air pollution can induce oxidative stress, inflammation and adverse health effects. To understand how seasonal and chemical variations drive health impacts, we investigated indications for oxidative stress and inflammation in mice exposed to water and organic extracts from urban fine particles/PM2.5 (particles with aerodynamic diameter ≤ 2.5 μm) collected in Beijing, China. Higher levels of pollution components were detected in heating season (HS, winter and part of spring) PM2.5 than in the non-heating season (NHS, summer and part of spring and autumn) PM2...
January 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29335168/wrf-modeling-of-pm2-5-remediation-by-salscs-and-its-clean-air-flow-over-beijing-terrain
#8
Qingfeng Cao, Lian Shen, Sheng-Chieh Chen, David Y H Pui
Atmospheric simulations were carried out over the terrain of entire Beijing, China, to investigate the effectiveness of an air-pollution cleaning system named Solar-Assisted Large-Scale Cleaning System (SALSCS) for PM2.5 mitigation by using the Weather Research and Forecasting (WRF) model. SALSCS was proposed to utilize solar energy to generate airflow therefrom the airborne particulate pollution of atmosphere was separated by filtration elements. Our model used a derived tendency term in the potential temperature equation to simulate the buoyancy effect of SALSCS created with solar radiation on its nearby atmosphere...
January 12, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29334979/measuring-spatial-accessibility-to-healthcare-services-with-constraint-of-administrative-boundary-a-case-study-of-yanqing-district-beijing-china
#9
Zhuolin Tao, Yang Cheng, Qingjing Zheng, Guicai Li
BACKGROUND: The two-step floating catchment area (2SFCA) method, which is one of the most widely used methods for measuring healthcare spatial accessibility, defines the catchment area of each facility as the area within a certain distance from the facility. However, in some cases, the service utilization behavior is constrained by administrative boundaries, therefore the definition of catchment area within a certain distance may be inappropriate. METHODS: In this study, we aim to propose a modification of the 2SFCA method for measuring spatial accessibility to healthcare services in a system constrained by administrative boundaries...
January 15, 2018: International Journal for Equity in Health
https://www.readbyqxmd.com/read/29334710/-a-study-on-genotype-of-271-mycobacterium-tuberculosis-isolates-in-6-prefectures-in-yunnan-province
#10
L Y Chen, X Yang, H H Ru, H J Yang, S Q Yan, L Ma, J O Chen, R Yang, L Xu
Objective: To understand the characteristics of genotypes of Mycobacterium tuberculosis isolates in Yunnan province, and provide the molecular epidemiological evidence for prevention and control of tuberculosis in Yunnan Province. Methods: Mycobacterium Tuberculosis isolates were collected from 6 prefectures of Yunnan province in 2014 and their Genetypes of Mycobacterium tuberculosis isolates were obtained using spoligotyping and multiple locus variable numbers of tandem repeats analysis (MLVA). The results of spoligotyping were entered into the SITVITWEB database to obtain the Spoligotyping International Type (SIT) patterns and the sublineages of MTB isolates...
January 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29331834/land-water-food-nexus-and-indications-of-crop-adjustment-for-water-shortage-solution
#11
Dandan Ren, Yonghui Yang, Yanmin Yang, Keith Richards, Xinyao Zhou
While agriculture places the greatest demand on water resources, increasing agricultural production is worsening a global water shortage. Reducing the cultivation of water-consuming crops may be the most effective way to reduce agricultural water use. However, when also taking food demand into consideration, sustaining the balance between regional water and food securities is a growing challenge. This paper addresses this task for regions where water is unsustainable for food production (Beijing-Tianjin-Hebei Region for example) by: (i) assessing the different effects of wheat and maize on water use; (ii) analyzing virtual water and virtual land flows associated with food imports and exports between Beijing-Tianjin-Hebei and elsewhere in China; (iii) identifying sub-regions where grain is produced using scarce water resources but exported to other regions; and (iv) analyzing the potentiality for mitigating water shortage via Land-Water-Food Nexus...
January 11, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29329018/corrosion-effect-of-bacillus-cereus-on-x80-pipeline-steel-in-a-beijing-soil-environment
#12
Hongxia Wan, Dongdong Song, Dawei Zhang, Cuiwei Du, Dake Xu, Zhiyong Liu, De Ding, Xiaogang Li
The corrosion of X80 pipeline steel in the presence of Bacillus cereus (B. cereus) was studied through electrochemical and surface analyses and live/dead staining. Scanning electron microscopy and live/dead straining results showed that a number of B. cereus adhered to the X80 steel. Electrochemical impedance spectroscopy showed that B. cereus could accelerate the corrosion of X80 steel. In addition, surface morphology observations indicated that B. cereus could accelerate pitting corrosion in X80 steel. The depth of the largest pits due to B...
December 24, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/29328652/trade-induced-atmospheric-mercury-deposition-over-china-and-implications-for-demand-side-controls
#13
Long Chen, Jing Meng, Sai Liang, Haoran Zhang, Wei Zhang, Maodian Liu, Yindong Tong, Huanhuan Wang, Wei Wang, Xuejun Wang, Jiong Shu
Mercury (Hg) is of global concern because of its adverse effects on humans and the environment. In addition to long-range atmospheric transport, Hg emissions can be geographically relocated through economic trade. Here, we investigate the effect of China's interregional trade on atmospheric Hg deposition over China, using an atmospheric transport model and multiregional input-output analysis. In general, total atmospheric Hg deposition over China is 408.8 Mg yr-1, and 32% of this is embodied in China's interregional trade, with the hotspots occurring over Gansu, Henan, Hebei, and Yunnan provinces...
January 12, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29325940/clinical-features-treatment-and-prognostic-factors-of-56-intracranial-and-intraspinal-clear-cell-meningiomas
#14
Xiaogang Tao, Jinqian Dong, Zonggang Hou, Shuyu Hao, Junting Zhang, Zhen Wu, Baiyun Liu
OBJECTIVE: Intracranial and intraspinal clear cell meningiomas (CCMs) are rarely reported because of their extremely low incidence, and the current understanding of CCM is poor. The purpose of this study was to analyze the incidence and the clinical, radiological, pathological, and prognostic features of intracranial and intraspinal CCMs. METHODS: Among 14310 cases of intracranial and intraspinal meningiomas that were surgically treated between 2006 and 2016 at Beijing Tian Tan Hospital, 56 were chosen for analysis and retrospectively reviewed...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29325358/-correlation-between-of-aortic-dissection-onset-and-climate-change
#15
J T Qiu, L Zhang, X J Luo, J Yang, S Liu, W X Jiang, C T Yu
Objective: To explore the relationship between the incidence of aortic dissection and climate change. Methods: The characteristics of 345 acute aortic dissection patients came from Beijing in Department of Vascular Surgery, Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College from January 2005 to December 2015 were analyzed, retrospectively. There were 266 male and 79 female patients with a mean age of (49±12) years. There were 209 cases of Stanford type A aortic dissection, and 136 cases of type B...
January 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29325355/-comparison-of-prognosis-between-invasive-micropapillary-carcinoma-and-invasive-ductal-carcinoma-of-breast-a-single-center-retrospective-case-control-study
#16
B Hua, X Lu, W Z Xiao, X Yang, S R He, Z Wang
Objective: To elucidate the clinicopathological characters and prognostic factors of invasive micropapillary carcinoma of the breast (IMPC) by compared with invasive ductal carcinoma, not otherwise specified of the breast (IDC). Methods: The retrospective study was performed with female patients who had undergone curative resection for breast cancer without neoadjuvant chemotherapy from June 2008 to April 2016 in Breast Center of Beijing Hospital. Forty-seven mixed or pure IMPC patients and 93 pure IDC patients(admitted in the same center from October 2008 to January 2016 ) were matched for tumor stage, nodal status and age...
January 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29325328/-value-of-split-hand-in-the-differential-diagnosis-of-amyotrophic-lateral-sclerosis-and-cervical-spondylotic-amyotrophy
#17
M Jiang, X Yan, L R Yan, Y B Zhan, H T Hu
Objective: To investigate the value of split hand in the differential diagnosis of amyotrophic lateral sclerosis(ALS) and cervical spondylotic amyotrophy (CSA). Methods: A total of 62 ALS patients, 57 CSA patients and 65 normal controls who visited the Neurology and Spine Department of Beijing Jishuitan Hospital from May 2013 to June 2017 were enrolled into this study.The amplitudes of compound muscle action potentials (CMAP) were recorded from abductor digiti minimi (ADM) and abductor pollicis brevis (APB)...
December 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29324847/sabina-chinensis-and-liriodendron-chinense-improve-air-quality-in-beijing-china
#18
Yanan Wu, Wenmei Ma, Jiakai Liu, Lijuan Zhu, Ling Cong, Jiexiu Zhai, Yu Wang, Zhenming Zhang
Urban forests have been shown to be efficient for reducing air pollutants especially for particulate matters (PMs). This study aims to reveal the PM blocking capacity of two common artificial landscape species, Sabina chinensis and Liriodendron chinense and to investigate spatial-temporal heterogeneities by estimating the vegetation collection velocity of coarse (PM10) and fine particles (PM2.5) during different seasons and heights. PM concentration and meteorological data were collected on both leeward and windward sides of trees during the daytime in both summers and winters from 2013 to 2015...
2018: PloS One
https://www.readbyqxmd.com/read/29324823/the-relationship-between-personalities-and-self-report-positive-driving-behavior-in-a-chinese-sample
#19
Biying Shen, Weina Qu, Yan Ge, Xianghong Sun, Kan Zhang
Driving behaviors play an important role in accident involvement. Concretely speaking, aberrant driving behaviors would cause more accidents, and oppositely positive driving behaviors would promote to build safety traffic environment. The main goals of this study were to explore the positive driving behavior and its relationship with personality in a Chinese sample. A total of 421 licensed drivers (286 male and 135 female) from Beijing, China completed the Positive Driver Behavior Scale (PDBS), the Driver Behavior Questionnaire (DBQ), the Dula Dangerous Driving Index (DDDI) and the Big Five Inventory (BFI) on a voluntary and anonymous basis...
2018: PloS One
https://www.readbyqxmd.com/read/29324671/spatiotemporal-patterns-of-ground-monitored-pm2-5-concentrations-in-china-in-recent-years
#20
Junming Li, Xiulan Han, Xiao Li, Jianping Yang, Xuejiao Li
This paper firstly explores the space-time evolution of city-level PM 2.5 concentrations showed a very significant seasonal cycle type fluctuation during the period between 13 May 2014 and 30 May 2017. The period from October to April following each year was a heavy pollution period, whereas the phase from April to October of the current year was part of a light pollution period. The average monthly PM 2.5 concentrations in mainland China based on ground monitoring, employing a descriptive statistics method and a Bayesian spatiotemporal hierarchy model...
January 11, 2018: International Journal of Environmental Research and Public Health
keyword
keyword
91817
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"