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https://www.readbyqxmd.com/read/28241727/-analysis-of-outcomes-of-one-stage-operation-for-treatment-of-late-diagnosed-developmental-dysplasia-of-hip
#1
Y Liu, J Sun
Objective: To evaluate and identify the middle-term results of one-stage open reduction of patients in late-diagnosed developmental dysplasia of the hip, and to explore the best age group for treatment. Methods: A total number of 311 patients (390 hips) with LDDH in Department of Pediatric Orthopaedic of Anhui Provincial Children's Hospital from June 2006 to December 2010 were retrospectively reviewed. The patients were divided into 3 groups according to age at the start of surgical treatment: 1.5-2.5 years, 2...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241724/-clinical-analysis-of-cervical-posterior-internal-fixation-titanium-plate-and-silk-suspension-internal-fixation-cervical-spondylosis
#2
X N Xu, H Y Liu
Objective: To evaluate the clinical effect and imaging evaluation of cervical spine myelopathy treated with Centerpiece. Methods: A retrospective study of 60 patients underwent posterior cervical spine surgery because of cervical myelopathy in Spinal Department of Peking University People's Hospital from July 2011 to January 2013.According to the different fixation methods, all patients were divided into cervical posterior open-door Centerpiece fixation group (group A) and cervical posterior open-door silk suspension fixation group (group B)...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241723/-efficacy-of-coflex-in-the-treatment-of-lumbar-spondylolisthesis
#3
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/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/28241717/-application-of-three-dimensional-printing-personalized-acetabular-wing-plate-in-treatment-of-complex-acetabular-fractures-via-lateral-rectus-approach
#5
J G Mai, C Gu, X Z Lin, T Li, W Q Huang, H Wang, X Y Tan, H Lin, Y M Wang, Y Q Yang, D D Jin, S C Fan
Objective: To investigate reduction and fixation of complex acetabular fractures using three-dimensional (3D) printing technique and personalized acetabular wing-plate via lateral-rectus approach. Methods: From March to July 2016, 8 patients with complex acetabular fractures were surgically managed through 3D printing personalized acetabular wing-plate via lateral-rectus approach at Department of Orthopedics, the Third Affiliated Hospital of Southern Medical University. There were 4 male patients and 4 female patients, with an average age of 57 years (ranging from 31 to 76 years)...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241715/-a-prospective-randomized-control-trial-of-arthroscopic-surgery-for-stable-ramp-lesion-of-the-medial-meniscus
#6
X Liu, H Feng, L Hong, H Zhang
Objective: To evaluate the necessity of arthroscopic suture repair for the stable ramp lesion. Methods: From August 2008 to April 2012, 91 patients of consecutive cases were diagnosed as anterior cruciate ligament (ACL) injury associated with stable ramp lesion in Department of Sports Medicine Service of Beijing Jishuitan Hospital. All of the diagnosis was confirmed during arthroscopic surgeries. The patients were randomized into suture repair group and control group. The ACL was reconstructed using auto grafts of hamstring...
March 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28241705/-clinical-effect-of-combined-artificial-extracorporeal-liver-support-therapy-for-toxic-hepatic-failure
#7
Y D Zhou, L Yang, Q F Han, Q B Tang, Y L Cheng, J X Shi
Objective: To investigate the clinical effect of plasma exchange (PE) versus double plasma molecular adsorption system combined with PE (DPMAS+PE) in the treatment of toxic hepatic failure. Methods: A total of 67 patients with toxic hepatic failure who were admitted during the same period of time were divided into PE group, DPMAS+ PE group, and control group. The 22 patients in the PE group were treated with PE alone, and the 24 patients in the DPMAS+PE group were given DPMAS combined with PE. The clinical out-come was compared between the three groups...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241704/-influence-of-n-hexane-on-vascular-endothelial-active-substances-in-brain-tissue-in-mice
#8
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/28241701/-application-of-means-of-surfaces-with-nonhomogeneity-in-estimating-the-incidence-of-pneumoconiosis
#9
C X Zhao, J Zhang, S B Hao, J Zhang, P Xu, Y W Can, J Q Zhao, J G Li
Objective: To investigate the value of means of surfaces with nonhomogeneity (MSN) in esti-mating the incidence of pneumoconiosis. Methods: Based on the principal component analysis, all counties (districts) of Hebei Province, China, were divided into three categories according to the degree of pneumoconiosis hazards and the MSN model was used to estimate the incidence rate of pneumoconiosis and the number of pneu-moconiosis cases using the data of the incidence of pneumoconiosis in 2010. Results: With reference to the appli-cation requirements of the MSN model, results of the principal component analysis, and expert experience, the 172 counties (districts) in Hebei Province were divided into three categories with mild, moderate, and severe pneumoconiosis hazards...
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
#10
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/28241696/-changes-of-the-expression-for-genes-related-with-senescence-and-the-telomerase-activity-during-cellular-replicative-and-premature-senescence-in-human-embryonic-lung-fibroblasts
#11
J P Yang, W J Zhang, C X Jing, C P Wu, W D Ji, L Q Yang, Z X Zhuang
Objective: To detect the alterations of telomerase activity and the expression for oxidative stress responsive genes related with senescence during cellular replicative senescence and hydrogen peroxide-induced premature senescence in human embryonic lung fibroblasts (HELFs) in vitro. Methods: The HELFs were divided into young cells (22 population doubling levels, 22PDL) , mid-aged cells (35PDL) and replicative senes-cent cells (49PDL) and premature senescent cells induced by H(2)O(2)(premature senescence, PS)...
January 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241695/-clinical-abservations-of-pulmonary-surfactant-s-autologous-transfusion-in-massive-lung-lavage
#12
X Y Xiao, X P Zhang, G Chen, Y Yuan, G X Ma, J Y Duan, Z Q Sun, J H Huang, X Cao, J Zhang
Objective: Investigate the pulmonary surfactant autotransfusion effect on the recovery of respiratory function in patients with whole lung lavage, to provide theoretical basis for the clinical application. Methods: We taken 30 patients of pneumoconiosis treated by whole lung lavage as the subjects. We extracted the pulmonary surfactant from lavage fluid, after single postoperative lung lavage for the first time; after one weeks when the second times of lung lavage were performed to the other side of the lung of patients, we put PS into the right side...
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
#13
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/28241677/-association-between-h3k4me3-bdnf-and-the-cognitive-function-of-workers-occupationally-exposed-to-aluminum
#14
H Y Qiu, P Ren, R Li, Q L Zhang, X T Lu, Q Niu
Objective: To investigate the influence of occupational aluminum exposure on cognitive function and its relationship with tri-methyl histone H3 lysine residues 4 points (H3K4me3) and brain-derived neurotrophic factor (BDNF) levels. Methods: By cluster random sampling method, a total of 235 cases of male workers selected from a Shanxi aluminum factory were recruited in the study in September 2015. Used the occupational epidemiological investigation questionnaire, which included Mini-Mental State Examination (MMSE) , Clock Drawing Test (CDT) , Digit Span Test (DST, including forward test DSFT and backward test DSBT) , Fuild Object Memory Evaluation (FOME) and Verbal Fluency Test (VFT) , to collect workers' basic information and assess their cognitive function score...
December 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28241670/surface-response-of-brominated-carbon-media-on-laser-and-thermal-excitation-optical-and-thermal-analysis-study
#15
Volodymyr V Multian, Fillip E Kinzerskyi, Anna V Vakaliuk, Liudmyla M Grishchenko, Vitaliy E Diyuk, Olga Yu Boldyrieva, Vadim O Kozhanov, Oleksandr V Mischanchuk, Vladyslav V Lisnyak, Volodymyr Ya Gayvoronsky
The present study is objected to develop an analytical remote optical diagnostics of the functionalized carbons surface. Carbon composites with up to 1 mmol g(-1) of irreversibly adsorbed bromine were produced by the room temperature plasma treatment of an activated carbon fabric (ACF) derived from polyacrylonitrile textile. The brominated ACF (BrACF) was studied by elastic optical scattering indicatrix analysis at wavelength 532 nm. The obtained data were interpreted within results of the thermogravimetric analysis, X-ray photoelectron spectroscopy and temperature programmed desorption mass spectrometry...
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
#16
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/28241665/controlling-light-with-freeform-multifocal-lens-designed-with-supporting-quadric-method-sqm
#17
Vladimir Oliker
The SQM is a versatile methodology for designing freeform optics for irradiance redistribution. Recently it has often been applied in design of freeform lenses, mirrors and diffractive optical elements. Still, many questions regarding theory and performance of optics designed with the SQM are open. Here we investigate theoretically plano-freeform refractive lenses designed with the SQM when an incident collimated beam must be transformed into a beam illuminating with prescribed irradiances a large number of pixels on a flat screen...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28241662/fourier-light-scattering-model-for-treating-textures-deeper-than-the-wavelength
#18
F-J Haug, M Bräuninger, C Ballif
We apply a Fourier-scattering model to describe light scattering in solar cells with textured surfaces. For the size and inclination angle of typical micro-textures, scattering may occur into large angles. This makes the model prone to paraxial errors. We present a non-paraxial formulation and discuss the transition from the domain of refraction at large facets to scattering at small features.
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28241654/microwave-photonic-phase-tunable-mixer
#19
Tianwei Jiang, Ruihuan Wu, Song Yu, Dongsheng Wang, Wanyi Gu
Traditional microwave photonic systems cannot implement frequency up-conversion with phase tunable capability, which plays an important role for phase array beamforming. Here, a method that can implement both upconversion and downconversion with a broadband full-degree phase-shift capability by constructing an optical path with a Hilbert transform function is presented. Owing to the Hilbert transform path, the dual-drive Mach-Zehnder modulator (DMZM) bias information, which initially influences the amplitudes of the output signals, are transferred to their phases...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28241648/numerical-study-on-multi-pulse-dynamics-and-shot-to-shot-coherence-property-in-quasi-mode-locked-regimes-of-a-highly-pumped-anomalous-dispersion-fiber-ring-cavity
#20
Youngchul Kwon, Luis Alonso Vazquez-Zuniga, Seungjong Lee, Hyuntai Kim, Yoonchan Jeong
We numerically investigate quasi-mode-locked (QML) multi-pulse dynamics in a fiber ring laser cavity in the anomalous dispersion regime. We show that the laser cavity can operate in five constitutively different QML regimes, depending on the saturation power of the saturable absorber element and the length of the passive fiber section that parameterize the overall nonlinearity and dispersion characteristic of the laser cavity. We classify them into the incoherent noise-like-pulse, partially-coherent noise-like-pulse, symbiotic, partially-coherent multi-soliton, and coherent multi-soliton regimes, accounting for their coherence and multi-pulse formation features...
February 20, 2017: Optics Express
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