keyword
MENU ▼
Read by QxMD icon Read
search

measurement

keyword
https://www.readbyqxmd.com/read/28241723/-efficacy-of-coflex-in-the-treatment-of-lumbar-spondylolisthesis
#1
Y Hai, X L Meng, D Y Li, X N Zhang, Y S Wang
Objective: To study the clinical results of Coflex and lumbar posterior decompression and fusion in the treatment of lumbar degenerative spondylolisthesis at L(4-5). Methods: Thirty-eight patients with Grade Ⅰ degenerative spondylolisthesis, from January 2008 to December 2011 in Beijing Chaoyang Hospital, Capital Medical University were reviewed, and patients were divided into two groups by randomness. Group A was treated with Coflex and group B with pedicle instrumentation and interbody fusion. Fifteen patients were included in group A, and 23 patients were included in group B...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241721/-radiographic-assessment-of-vertebral-artery-injury-in-anterior-cervical-surgery-in-healthy-adults
#2
H L Wang, L Jiang, F Z Lyu, X S Ma, X L Xia, J Y Jiang
Objectives: To study the relationship between the anatomical parameters of transverse foramen and intervertebral discs in the cross-section of the cervical spine in healthy adults, and to evaluate the risk of vertebral artery injury in the anterior cervical spine surgery. Methods: There were 24 healthy adults(12 male, 12 female) underwent neck CT angiography with clear vertebral artery and the adjacent structure imaging from June to December 2014 in Huashan Hospital, Fudan University. The anatomical parameters of vertebral artery V2 segment with lower cervical vertebrae and intervertebral discs were measured by cross-sectional images of C(3-6)...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241720/-proximal-junctional-kyphosis-after-posterior-hemivertebra-resection-and-instrumented-fusion-in-young-children-with-congenital-scoliosis
#3
X Sun, X Chen, Z H Chen, Z Z Zhu, F Zhu, Z Liu, B P Qian, B Wang, J Qiao, Y Qiu
Objective: To investigate the risk factors of proximal junctional kyphosis(PJK) in young children who underwent posterior hemivertebra resection and instrumented fusion. Methods: This study reviewed the charts and radiographs of 136 consecutive young children with congenital scoliosis who underwent posterior hemivertebra resection and instrumented fusion in Department of Orthopaedics, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School from January 2009 to June 2014, including 75 males and 61 females, with an average age of (5...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241719/-clinical-application-of-three-dimensional-o-arm-navigation-system-in-treating-patients-with-dystrophic-scoliosis-secondary-to-neurofibromatosis-type-%C3%A2
#4
Z Liu, Y Qiu, Y Li, Z H Zhao, B Wang, F Zhu, Y Yu, X Sun, Z Z Zhu
Objective: To investigate the clinical outcomes and the accuracy of O-arm-navigation system assisted pedicle screw insertion in dystrophic scoliosis secondary to neurofibromatosis type Ⅰ(NF-1). Methods: A retrospective study was conducted in 41 patients with dystrophic NF-1-associated thoracic scoliosis who were surgically treated at Department of Orthopaedics, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School between June 2012 and October 2014 with more than 18 months follow-up...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241716/-effect-analysis-of-anterior-cervical-operation-for-severe-cervical-kyphosis
#5
X L Shen, H Q Wu, Z H Hu, Y Liu, X W Wang, H J Chen, P Cao, Y Tian, C Yang, W Yuan
Objective: To determine the feasibility and safety of anterior cervical decompression and fusion in severe cervical kyphosis treatment. Methods: Totally 29 patients with severe cervical kyphosis(Cobb angle>50°) underwent anterior cervical decompression and fusion from June 2008 to May 2016 were studied retrospectively. There were 19 males and 10 females. The average age was 32.6 years ranging from 14 to 53 years. According to the etiology, 12 patients had iatrogenic deformity (11 had post-laminectomy cervical kyphosis, 1 had kyphosis due to anterior graft subsidence), 5 had neurofibromatosis, 4 had infective kyphosis, 8 had idiopathic cervical kyphosis...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241704/-influence-of-n-hexane-on-vascular-endothelial-active-substances-in-brain-tissue-in-mice
#6
L Lin, Z Q Zhang, C Z Zhang
Objective: To investigate the influence of n-hexane on vascular endothelial active substances in brain tissue in mice and its significance. Methods: A total of 48 healthy Kunming mice were randomly divided into high-dose exposure group, middle-dose exposure group, low-dose exposure group, and control group, with 12 mice in each group. All groups except the control group were exposed to n-hexane via static inhalation (0.035 g/L, 0.018 g/L, and 0.009 g/L for the high-, middle-, and low-dose exposure groups, respectively) 4 hours a day for 21 days...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241702/-influencing-factors-for-job-satisfaction-in-train-drivers-in-a-railway-bureau-an-analysis-of-1413-cases
#7
G Z Gu, S F Yu, W H Zhou, H Wu, L Kang, R Chen
Objective: To investigate the influencing factors for job satisfaction in train drivers. Methods: In March 2012, cluster sampling was used to conduct a cross-sectional survey in 1413 male train drivers (including 301 passenger train drivers, 683 freight train drivers, 350 passenger shunting train drivers, and 79 high-speed train drivers) from a locomotive depot of a railway bureau. The occupational stress instruments, job content questionnaire, and effort-reward imbalance questionnaire were used to analyze job satisfaction, occupational stress factors, stress reaction, individual characteristics, coping strategies, and social support...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241699/-effects-of-ginaton-on-nitric-oxide-and-nitric-oxide-synthase-in-patients-with-delayed-encephalopathy-after-carbon-monoxide-poisoning
#8
W Z Wang, H N Qi, Q M Xiao, X Gao, B Y Zhu, J Li, Y J Liu, W Li, G Y Ma, P Wang
Objective: To observe the effects of Ginaton on blood nitric oxide (NO) and nitric oxide synthase (NOS) in patients with delayed encephalopathy after acute carbon monoxide poisoning (DEACMP). Methods: A total of 116 patients with DEACMP who were treated in Emergency Department of Harrison International Peace Hospital Affiliated to Hebei Medical University from January 2012 to April 2016 were enrolled and ran-domly divided into control group and treatment group using a random number table, with 58 patients in each group...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241698/-value-of-base-excess-in-predicting-the-prognosis-of-patients-with-paraquat-poisoning
#9
X W Kang, H Tong, K Q Cao, Q F Mo, L W Li, G L Hong, L Mo, D Li, G J Zhao, Z Q Lu
Objective: To explore prognostic factors of acute paraquat poisoning (APP) , analyze the correlation between base excess (BE) and plasma concentration of paraquat (C-PQ) and discuss BE level in evalua-tion of prognosis of acute paraquat poisoning patients. Methods: We retrospectively selected 84 APP patients who admitted to Emergency Intensive Care Unit (EICU) of our hospital from 2009.9.1 to 2015.8.31.Clinical data from 84 APP patients were analyzed. BE、C-PQ、time of gastric lavagesince ingestion、time of hemoperfusion since ingestion、severity index of paraquat poisoning (SIPP) 、white blood cell (WBC) 、percentage of neutrophils (N%) 、hemoglobin (HB) 、creatinine (Cr) 、alanine aminotransferase (ALT) 、aspartate aminotransferase (AST) 、partial pressure of oxygen (PaO(2)) 、partial pressure of carbon dioxide (PaCO(2)) and other laboratory parameters were measured...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241693/-effect-of-gas6-in-silica-induced-inflammation-on-differentiated-human-acute-monocytic-leukemia-thp-1-macrophages
#10
Y Shen, X Q Cui, Y Rong, M Zhou, L L Xiao, W Li, Z H Zhang, W H Chen
Objective: To investigate the modulation role of Gas6 in silica-induced inflammatory effect on human macrophages. Methods: Differentiated THP-1 macrophages were exposed to different concentrations of silica for 6 h and 24 h. Additionally, silica-activated macrophages were treated with different concentrations of recombine human Gas6 and Gas6 antibody respectively. Cell viabilities were determined by CCK-8 kit. Expression levels of Gas6 and inflammatory cytokines (TNF-α, IL-1β and IL-6) were measured by ELISA assay kits...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241688/-determination-of-trace-bismuth-by-atomic-fluorescence-spectrometry-in-blood
#11
L Z Zhou, S Fu, S Q Gao
Objective: To establish a method for determination trace bismuth in blood by atomic fluorescence spectrometry (AFS) . Methods: 4.0 ml nitric acid and 1.0 ml perchloric acid was added into 1.0 ml blood sample then through automation graphite digestion instrument digested, after that 1.0 ml thiocarbamide-vitamin (10%) was injected, 8% HCl constant volume to 10.0 ml, the bismuth was detected by atomic fluorescence spectrometry with 5.0 ml digestive sample. Results: The method showed a linear relationship within the range of 0...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241683/-job-burnout-and-related-influencing-factors-in-community-medical-staff-in-nanchong-china
#12
T Zhu, S S Zhang, D Y Chen, H Yang, T Zheng, L M Zheng, J Li
Objective: To investigate job burnout and related influencing factors in community medical staff in Nanchong, China. Methods: From June to July, 2015, cluster random sampling was performed to select 181 medical staff members in Nanchong Community Health Service Center as study subjects. The Chinese Maslach Burnout Inventory (CMBI) was used to measure the level of job burnout. Results: The overall detection rate of job burnout in community medical staff in Nanchong was 95.0%, and among these staff members with job burnout, 119 (65...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241682/-an-investigation-of-reproductive-health-and-related-influencing-factors-in-female-staff-in-six-industries-in-seven-provinces-in-china
#13
M Xu, W L Yu, Z L Xing, H Y Yao, J F Sun, C Y Yu
Objective: To investigate the reproductive health status in female staff, and to develop labor protection strategies for female staff. Methods: From May to November, 2015, cluster sampling was performed in the industries of medicine and health, petrochemical engineering, metallurgy, railway, mechanical manufacturing, and electronics in seven provinces (municipalities directly under the Central Government and autonomous regions) . A questionnaire surveywas performed for female staff, and the investigation covered general information, occupational history andexposure to occupational hazards, and reproductive health and childbearing history...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241680/-current-status-of-hearing-loss-and-related-influencing-factors-in-workers-with-noise-exposure-in-refining-and-chemical-industry
#14
S S Wu, J N Yu, C H He, H X Mu, C Wang, Y Zhang, C Y Zhang, S F Yu, X L Li
Objective: To investigate the current status of hearing loss and related influencing factors in workers with noise exposure in refining and chemical industry. Methods: From August 2015 to March 2016, the investigation method of collecting the data of past occupational health examinations and measuring noise in working environment was used to enroll 8 672 male workers. Results: Of all workers, 11.6% were diagnosed with hearing loss. There were significant differences in the distribution of hearing impairment among workers exposed to noise at different ages, device types and types of work (χ(2)=17...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241675/-association-between-single-nucleotide-polymorphismsin-human-heat-shock-protein-70-gene-and-susceptibility-to-noise-induced-hearing-loss
#15
Y H Li, G S Chen, J Jiao, W H Zhou, H Wu, G Z Gu, H L Zhang, Y X Zheng, S F Yu
Objective: To investigate the association between the single nucleotide polymorphisms (SNPs) at rs1043618, rs2075800, and rs2763979 in human heat shock protein 70 (HSP70) gene and susceptibility to noise-induced hearing loss (NIHL) . Methods: A case-control study was performed, and 5 934 workers exposed to noise in an iron and steel plant in Henan, China, who underwent physical examination from 2006 to 2015, were enrolled as study subjects. According to the criteria of binaural average high - frequency (3000, 4000, and 6000 Hz) hearing threshold≥40 dB (HL) and monauralaverage speech-frequency (500, 1000, 2000 Hz) hearing threshold≥26 dB (HL) on the basis of binauralhigh frequency loss measured by pure tone audiometry, as well as the exclusion of NIHL, a total of 286 workers were enrolled as hearing loss group; after the adjustment for sex, type of work, age (difference≤5 years) , and working years of noise exposure (difference ≤2 years) , 286 workers were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241674/-association-between-serum-magnesium-ion-level-and-risk-of-noise-induced-hearing-loss
#16
J Jiao, G Z Gu, G S Chen, Y X Zheng, H L Zhang, Q Geng, Y B Cheng, S F Yu
Objective: To investigate the association between serum magnesium ion level and risk of noise-induced hearing loss (NIHL) . Methods: Acohort study was performed for 7 445 workers exposed to noise in the steelmaking and steel rolling workshops of an iron and steel enterprise in Henan Province, China. The follow-up time was from January 1, 2006 to December 31, 2015. The workers with a binaural average high-frequency hearing threshold of ≥40 dB (HL) were enrolled as case group, and those with a binaural average high-frequency hearing threshold of <35 dB (HL) and a binaural average speech frequency of ≤25 dB (HL) were enrolled as control group...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241671/the-effect-of-copper-and-selenium-nanocarboxylates-on-biomass-accumulation-and-photosynthetic-energy-transduction-efficiency-of-the-green-algae-chlorella-vulgaris
#17
Natalia F Mykhaylenko, Elena K Zolotareva
Nanoaquachelates, the nanoparticles with the molecules of water and/or carboxylic acids as ligands, are used in many fields of biotechnology. Ultra-pure nanocarboxylates of microelements are the materials of spatial perspective. In the present work, the effects of copper and selenium nanoaquachelates carboxylated with citric acid on biomass accumulation of the green algae Chlorella vulgaris were examined. Besides, the efficiency of the reactions of the light stage of photosynthesis was estimated by measuring chlorophyll a fluorescence...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28241669/optical-modeling-based-on-mean-free-path-calculations-for-quantum-dot-phosphors-applied-to-optoelectronic-devices
#18
Min-Ho Shin, Hyo-Jun Kim, Young-Joo Kim
We proposed an optical simulation model for the quantum dot (QD) nanophosphor based on the mean free path concept to understand precisely the optical performance of optoelectronic devices. A measurement methodology was also developed to get the desired optical characteristics such as the mean free path and absorption spectra for QD nanophosphors which are to be incorporated into the simulation. The simulation results for QD-based white LED and OLED displays show good agreement with the experimental values from the fabricated devices in terms of spectral power distribution, chromaticity coordinate, CCT, and CRI...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28241667/photopolarimetric-properties-of-a-manmade-target-over-a-wide-range-of-measurement-directions
#19
Zhongqiu Sun, Di Wu, Yunfeng Lv
The optical scattering property of a target is the essential signal for passive remote sensing. In this study, we performed the photopolarimetric measurements of a manmade target in the wavelength range of 400-1000 nm over the hemispherical directions using the Northeast Normal University Laboratory Goniospectrometer System (NENULGS). We discussed the influence of the absorption of a polarizer on the measured Stokes parameters, and used the BRF (bidirectional reflectance factor) and BPRF (bidirectional polarized reflectance factor) to characterize the scattering property of our sample at selected wavelengths...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28241666/iaoos-microlidar-on-buoy-development-and-first-atmospheric-observations-obtained-during-2014-and-2015-arctic-drifts
#20
Vincent Mariage, Jacques Pelon, Frédéric Blouzon, Stéphane Victori, Nicolas Geyskens, Nadir Amarouche, Christine Drezen, Antoine Guillot, Michel Calzas, Magali Garracio, Nicolas Wegmuller, Nathalie Sennéchael, Christine Provost
The in situ tests of first ever autonomous aerosol and cloud backscatter LIDAR (light detection and ranging) systems implemented on buoys for Arctic observations has been achieved in 2015 within the French EQUIPEX IAOOS project. The environmental and operational constraints were met by adopting a concept of a fibered microjoule lidar system using a laser diode. Two systems have been developed with and without polarization analysis capability. A specific optical design was used for polarization discrimination...
February 20, 2017: Optics Express
keyword
keyword
43340
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"