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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]
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]
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
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
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
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
Zhaomin Tong, Wenjiang Shen, Shaohua Song, Wenzhi Cheng, Zhuo Cai, Yifei Ma, Lei Wei, Weiguang Ma, Liantuan Xiao, Suotang Jia, Xuyuan Chen
In high lumen laser projectors, it is required to use laser diodes coupled to multi-mode fibers (MMFs) to obtain a high power illumination module. In this paper, we have fabricated an electromagnetic micro-scanning mirror (EM-MSM), and we have firstly demonstrated a speckle reduction method by the combination of the EM-MSM and the MMF. With the help of a condenser lens, laser beams modulated and reflected from the EM-MSM are coupled into the MMF within its acceptance angle. Because the fast scanning behavior of the EM-MSM results in the phase modulation and mode coupling among the MMF guided modes, the light intensity field distributions at the exit aperture of the MMF are changing...
February 20, 2017: Optics Express
Huaqing Zhou, Haigang Liu, Minghuang Sang, Jun Li, Xianfeng Chen
We numerically and experimentally investigated the nonlinear Raman-Nath second harmonic generation of hybrid structured fundamental wave whose phase modulation combined periodic and random structure. The second harmonic generation of both one- and two-dimensional hybrid structured fundamental wave were investigated in this paper. The results show that more diffraction spots can be obtained in these hybrid structures than the pure periodic modulation cases. Besides, the total intensity of the second harmonic not only can be dramatically enhanced without altering the diffraction angles, but also is increasing with the degree of randomness of the structure...
February 20, 2017: Optics Express
Xifeng Xiao, David G Voelz, Santasri R Bose-Pillai, Milo W Hyde
In a previous paper [Opt. Express22, 31691 (2014)] two different wave optics methodologies (phase screen and complex screen) were introduced to generate electromagnetic Gaussian Schell-model sources. A numerical optimization approach based on theoretical realizability conditions was used to determine the screen parameters. In this work we describe a practical modeling approach for the two methodologies that employs a common numerical recipe for generating correlated Gaussian random sequences and establish exact relationships between the screen simulation parameters and the source parameters...
February 20, 2017: Optics Express
Anbang Wang, Longsheng Wang, Pu Li, Yuncai Wang
Chaotic external-cavity semiconductor laser (ECL) is a promising entropy source for generation of high-speed physical random bits or digital keys. The rate and randomness is unfortunately limited by laser relaxation oscillation and external-cavity resonance, and is usually improved by complicated post processing. Here, we propose using a physical broadband white chaos generated by optical heterodyning of two ECLs as entropy source to construct high-speed random bit generation (RBG) with minimal post processing...
February 20, 2017: Optics Express
Chunbao Xiong, Huali Lu, Jinsong Zhu
Real-time dynamic displacement and acceleration responses of the main span section of the Tianjin Fumin Bridge in China under ambient excitation were tested using a Global Navigation Satellite System (GNSS) dynamic deformation monitoring system and an acceleration sensor vibration test system. Considering the close relationship between the GNSS multipath errors and measurement environment in combination with the noise reduction characteristics of different filtering algorithms, the researchers proposed an AFEC mixed filtering algorithm, which is an combination of autocorrelation function-based empirical mode decomposition (EMD) and Chebyshev mixed filtering to extract the real vibration displacement of the bridge structure after system error correction and filtering de-noising of signals collected by the GNSS...
February 23, 2017: Sensors
Vincenzo Arcoraci, Marco Atteritano, Francesco Squadrito, Rosario D'Anna, Herbert Marini, Domenico Santoro, Letteria Minutoli, Sonia Messina, Domenica Altavilla, Alessandra Bitto
Genistein has a preventive role against bone mass loss during menopause. However, experimental data in animal models of osteoporosis suggest an anti-osteoporotic potential for this isoflavone. We performed a post-hoc analysis of a previously published trial investigating the effects of genistein in postmenopausal women with low bone mineral density. The parent study was a randomized, double-blind, placebo-controlled trial involving postmenopausal women with a femoral neck (FN) density <0.795 g/cm². A cohort of the enrolled women was, in fact, identified at the baseline as osteoporotic (n = 121) on the basis of their T-score and analyzed thereafter for the 24 months' treatment with either 1000 mg of calcium and 800 IU vitamin D3 (placebo; n = 59); or calcium, vitamin D3, and Genistein aglycone (54 mg/day; genistein; n = 62)...
February 22, 2017: Nutrients
Pantea Nazeri, Parvin Mirmiran, Zhale Tahmasebinejad, Mehdi Hedayati, Hossein Delshad, Fereidoun Azizi
Iodine deficiency during the first two years of life may cause irreversible brain damage and mental retardation. The aim of the present study was to investigate, for the first time, the effect of iodine fortified milk on the iodine status of lactating mothers and their infants. In this multicenter randomized controlled trial, 84 lactating mother-infant pairs from health care centers were randomly selected. After meeting the inclusion criteria, lactating mothers were randomly assigned to two groups: the iodine fortified milk group and the control group (n = 42 each)...
February 22, 2017: Nutrients
Charles R Watts, Andrew J Gregory, Cole P Frisbie, Sándor Lovas
Replica exchange molecular dynamics simulations (300 ns) were used to study the dimerization of amyloid β(1-40) (Aβ(1-40)) polypeptide. Configurational entropy calculations revealed that at physiologic temperature (310 K, 37°C) dynamic dimers are formed by randomly docked monomers. Free energy of binding of the two chains to each other was -93.56 ± 6.341 kJ mol(-1) . Prevalence of random coil conformations was found for both chains with the exceptions of increased β-sheet content from residues 16-21 and 29-32 of chain A and residues 15-21 and 30-33 of chain B with β-turn/β-bend conformations in both chains from residues 1-16, 21-29 of chain A, 1-16, and 21-29 of chain B...
February 27, 2017: Proteins
Samieh Ghana, Sevil Hakimi, Mojgan Mirghafourvand, Fatemeh Abbasalizadeh, Nasser Behnampour
OBJECTIVE: To assess the effect of using abdominal binders on pain, distress, and postpartum hemorrhage after cesarean delivery. METHODS: The present prospective randomized controlled trial enrolled patients undergoing non-emergency cesarean deliveries in Gonbad-e Kavus, Golestan Province, Iran, between January 22 and October 23, 2015. Patients were randomized in a 1:1 ratio by blocks of four or six to a control group or to use an abdominal binder after delivery; all patients received routine care...
February 27, 2017: International Journal of Gynaecology and Obstetrics
Craig M Zaidman, Jim S Wu, Kush Kapur, Amy Pasternak, Lavanya Madabusi, Sung Yim, Adam Pacheck, Heather Szelag, Tim Harrington, Basil T Darras, Seward B Rutkove
OBJECTIVE: We assessed changes in quantitative muscle ultrasound data in boys with Duchenne muscular dystrophy (DMD) and healthy controls to determine if ultrasound can serve as a biomarker of disease progression. Two approaches were used: grey scale level (GSL), measured from the ultrasound image, and quantitative backscatter analysis (QBA) measured directly from the received echoes. METHODS: GSL and QBA were obtained from six unilateral arm/leg muscles in 36 boys with DMD and 28 healthy boys (age 2-14 years) for up to 2 years...
February 27, 2017: Annals of Neurology
Thomas Agoritsas, Arnaud Merglen, Nilay D Shah, Martin O'Donnell, Gordon H Guyatt
Observational studies almost always have bias because prognostic factors are unequally distributed between patients exposed or not exposed to an intervention. The standard approach to dealing with this problem is adjusted or stratified analysis. Its principle is to use measurement of risk factors to create prognostically homogeneous groups and to combine effect estimates across groups.The purpose of this Users' Guide is to introduce readers to fundamental concepts underlying adjustment as a way of dealing with prognostic imbalance and to the basic principles and relative trustworthiness of various adjustment strategies...
February 21, 2017: JAMA: the Journal of the American Medical Association
Simon Gilbody, Helen Lewis, Joy Adamson, Katie Atherton, Della Bailey, Jacqueline Birtwistle, Katharine Bosanquet, Emily Clare, Jaime Delgadillo, David Ekers, Deborah Foster, Rhian Gabe, Samantha Gascoyne, Lesley Haley, Jahnese Hamilton, Rebecca Hargate, Catherine Hewitt, John Holmes, Ada Keding, Amanda Lilley-Kelly, Shaista Meer, Natasha Mitchell, Karen Overend, Madeline Pasterfield, Jodi Pervin, David A Richards, Karen Spilsbury, Gemma Traviss-Turner, Dominic Trépel, Rebecca Woodhouse, Friederike Ziegler, Dean McMillan
Importance: There is little evidence to guide management of depressive symptoms in older people. Objective: To evaluate whether a collaborative care intervention can reduce depressive symptoms and prevent more severe depression in older people. Design, Setting, and Participants: Randomized clinical trial conducted from May 24, 2011, to November 14, 2014, in 32 primary care centers in the United Kingdom among 705 participants aged 65 years or older with Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition) subthreshold depression; participants were followed up for 12 months...
February 21, 2017: JAMA: the Journal of the American Medical Association
Süleyman Bilecen, Joris A H de Groot, Cor J Kalkman, Alexander J Spanjersberg, George J Brandon Bravo Bruinsma, Karel G M Moons, Arno P Nierich
Importance: Fibrinogen concentrate might partly restore coagulation defects and reduce intraoperative bleeding. Objective: To determine whether fibrinogen concentrate infusion dosed to achieve a plasma fibrinogen level of 2.5 g/L in high-risk cardiac surgery patients with intraoperative bleeding reduces intraoperative blood loss. Design, Setting, and Participants: A randomized, placebo-controlled, double-blind clinical trial conducted in Isala Zwolle, the Netherlands (February 2011-January 2015), involving patients undergoing elective, high-risk cardiac surgery (ie, combined coronary artery bypass graft [CABG] surgery and valve repair or replacement surgery, the replacement of multiple valves, aortic root reconstruction, or reconstruction of the ascending aorta or aortic arch) with intraoperative bleeding (blood volume between 60 and 250 mL suctioned from the thoracic cavity in a period of 5 minutes) were randomized to receive either fibrinogen concentrate or placebo...
February 21, 2017: JAMA: the Journal of the American Medical Association
Janine E Curcio, Matthew J Grana, Stacey England, Paige M Banyas, Benjamin D Palmer, Arielle E Placke, William A Rieck, Amber M Eade
CONTEXT: Repeated overhead throwing in baseball players alters range of motion (ROM), contributing to shoulder injury. The Spencer technique has been used, anecdotally, to reduce the effects of throwing-induced limitations in ROM. OBJECTIVE: To quantify the effects of a single administration of the Spencer technique on the ROM and performance of collegiate baseball pitchers. METHODS: Pitchers from the Seton Hill University men's baseball team were randomly assigned to 2 treatment groups: Spencer technique or sham therapy...
March 1, 2017: Journal of the American Osteopathic Association
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