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https://www.readbyqxmd.com/read/28940776/influence-of-collars-on-the-primary-stability-of-cementless-femoral-stems-a-finite-element-study-using-a-diverse-patient-cohort
#1
Rami M A Al-Dirini
For cementless femoral stems, there is debate as to whether a collar enhances primary stability and load transfer compared to collarless designs. Finite Element (FE) analysis has the potential to compare stem designs within the same cohort, allowing for subtle performance differences to be identified, if present. Subject-specific FE models of intact and implanted femora were run for a diverse cohort (21 males, 20 females; BMI 16.4-41.2 kg.m(-2) , age 50-80yrs). Collared and collarless versions of Corail® (DePuy Synthes) were sized and positioned using an automated algorithm that aligns the femoral/stem axes, preserves the head-centre location and maximises metaphyseal fit...
September 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28938868/start-a-system-for-flexible-analysis-of-hundreds-of-genomic-signal-tracks-in-few-lines-of-sql-like-queries
#2
Xinjie Zhu, Qiang Zhang, Eric Dun Ho, Ken Hung-On Yu, Chris Liu, Tim H Huang, Alfred Sze-Lok Cheng, Ben Kao, Eric Lo, Kevin Y Yip
BACKGROUND: A genomic signal track is a set of genomic intervals associated with values of various types, such as measurements from high-throughput experiments. Analysis of signal tracks requires complex computational methods, which often make the analysts focus too much on the detailed computational steps rather than on their biological questions. RESULTS: Here we propose Signal Track Query Language (STQL) for simple analysis of signal tracks. It is a Structured Query Language (SQL)-like declarative language, which means one only specifies what computations need to be done but not how these computations are to be carried out...
September 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28938317/postoperative-changes-in-isolated-medial-orbital-wall-fractures-based-on-computed-tomography
#3
Soyeon Jung, Jang Won Lee, Chung Hun Kim, Euna Hwang, Hyoseob Lim, Sung Won Jung, Sung Hoon Koh
The treatment has been improved on the accurate reduction of blow-out fracture for many decades. But still, it has been limited to reduce completely when surgeons are approaching by conventional technique. The authors analyzed the postoperative results using computed tomography (CT) scans after conventional open reduction of isolated medial wall fracture. Thirty-seven patients with isolated medial wall fracture were reviewed. All patients underwent preoperative, immediate, and postoperative CT scans. Two surgeons have performed the surgery by conventional open reduction with transcaruncular approach and absorbable mesh insertion...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28932404/crystalexplorer-model-energies-and-energy-frameworks-extension-to-metal-coordination-compounds-organic-salts-solvates-and-open-shell-systems
#4
Campbell F Mackenzie, Peter R Spackman, Dylan Jayatilaka, Mark A Spackman
The application domain of accurate and efficient CE-B3LYP and CE-HF model energies for intermolecular interactions in molecular crystals is extended by calibration against density functional results for 1794 molecule/ion pairs extracted from 171 crystal structures. The mean absolute deviation of CE-B3LYP model energies from DFT values is a modest 2.4 kJ mol(-1) for pairwise energies that span a range of 3.75 MJ mol(-1). The new sets of scale factors determined by fitting to counterpoise-corrected DFT calculations result in minimal changes from previous energy values...
September 1, 2017: IUCrJ
https://www.readbyqxmd.com/read/28928645/auditory-motor-mapping-training-in-a-more-verbal-child-with-autism
#5
Karen V Chenausky, Andrea C Norton, Gottfried Schlaug
We tested the effect of Auditory-Motor Mapping Training (AMMT), a novel, intonation-based treatment for spoken language originally developed for minimally verbal (MV) children with autism, on a more-verbal child with autism. We compared this child's performance after 25 therapy sessions with that of: (1) a child matched on age, autism severity, and expressive language level who received 25 sessions of a non-intonation-based control treatment Speech Repetition Therapy (SRT); and (2) a matched pair of MV children (one of whom received AMMT; the other, SRT)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28928316/integrated-brief-tobacco-and-alcohol-cessation-intervention-in-a-primary-health-care-setting-in-karnataka
#6
O T Sabari Sridhar, Pratima Murthy, K V Kishore Kumar
BACKGROUND: Tobacco and alcohol use are important preventable risk factors for noncommunicable diseases and need to be addressed in primary health care. OBJECTIVES: To find the effectiveness of Alcohol, Smoking, and Substance Involvement Screening Test (ASSIST)-based brief intervention for alcohol and tobacco in a primary health-care setting in Karnataka. METHODS: This study was conducted in 2012 where one primary health center (PHC) in Karnataka was an intervention site and other the control site...
September 2017: Indian Journal of Public Health
https://www.readbyqxmd.com/read/28927778/introducing-nerve-sparing-approach-during-minimally-invasive-radical-hysterectomy-for-locally-advanced-cervical-cancer-a-multi-institutional-experience
#7
Francesco Raspagliesi, Giorgio Bogani, Arsenio Spinillo, Antonino Ditto, Stefano Bogliolo, Jvan Casarin, Umberto Leone Roberti Maggiore, Fabio Martinelli, Mauro Signorelli, Barbara Gardella, Valentina Chiappa, Cono Scaffa, Simone Ferrero, Antonella Cromi, Domenica Lorusso, Fabio Ghezzi
OBJECTIVE: To evaluate the impact of nerve-sparing (NS) approach on outcomes of patients undergoing minimally invasive radical hysterectomy (MRH) for locally advanced stage cervical cancer (LACC). METHODS: Data of consecutive patients undergoing minimally invasive surgery for LACC were retrospectively retrieved in a multi-institutional setting from 2009 to 2016. All patients included had minimally invasive class III radical hysterectomy (MRH or NS-MRH). Propensity matching algorithm was used to decrease possible allocation bias when comparing outcomes between groups...
September 7, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28927019/worst-case-energy-efficiency-maximization-in-a-5g-massive-mimo-noma-system
#8
Sunil Chinnadurai, Poongundran Selvaprabhu, Yongchae Jeong, Xueqin Jiang, Moon Ho Lee
In this paper, we examine the robust beamforming design to tackle the energy efficiency (EE) maximization problem in a 5G massive multiple-input multiple-output (MIMO)-non-orthogonal multiple access (NOMA) downlink system with imperfect channel state information (CSI) at the base station. A novel joint user pairing and dynamic power allocation (JUPDPA) algorithm is proposed to minimize the inter user interference and also to enhance the fairness between the users. This work assumes imperfect CSI by adding uncertainties to channel matrices with worst-case model, i...
September 18, 2017: Sensors
https://www.readbyqxmd.com/read/28925947/a-dynamic-multi-projection-contour-approximating-framework-for-the-3d-reconstruction-of-buildings-by-super-generalized-optical-stereo-pairs
#9
Yiming Yan, Nan Su, Chunhui Zhao, Liguo Wang
In this paper, a novel framework of the 3D reconstruction of buildings is proposed, focusing on remote sensing super-generalized stereo-pairs (SGSPs). As we all know, 3D reconstruction cannot be well performed using nonstandard stereo pairs, since reliable stereo matching could not be achieved when the image-pairs are collected at a great difference of views, and we always failed to obtain dense 3D points for regions of buildings, and cannot do further 3D shape reconstruction. We defined SGSPs as two or more optical images collected in less constrained views but covering the same buildings...
September 19, 2017: Sensors
https://www.readbyqxmd.com/read/28925386/5-hydroxymethylcytosine-signatures-in-circulating-cell-free-dna-as-diagnostic-biomarkers-for-human-cancers
#10
Wenshuai Li, Xu Zhang, Xingyu Lu, Lei You, Yanqun Song, Zhongguang Luo, Jun Zhang, Ji Nie, Wanwei Zheng, Diannan Xu, Yaping Wang, Yuanqiang Dong, Shulin Yu, Jun Hong, Jianping Shi, Hankun Hao, Fen Luo, Luchun Hua, Peng Wang, Xiaoping Qian, Fang Yuan, Lianhuan Wei, Ming Cui, Taiping Zhang, Quan Liao, Menghua Dai, Ziwen Liu, Ge Chen, Katherine Meckel, Sarbani Adhikari, Guifang Jia, Marc B Bissonnette, Xinxiang Zhang, Yupei Zhao, Wei Zhang, Chuan He, Jie Liu
DNA modifications such as 5-methylcytosine (5mC) and 5-hydroxymethylcytosine (5hmC) are epigenetic marks known to affect global gene expression in mammals. Given their prevalence in the human genome, close correlation with gene expression and high chemical stability, these DNA epigenetic marks could serve as ideal biomarkers for cancer diagnosis. Taking advantage of a highly sensitive and selective chemical labeling technology, we report here the genome-wide profiling of 5hmC in circulating cell-free DNA (cfDNA) and in genomic DNA (gDNA) of paired tumor and adjacent tissues collected from a cohort of 260 patients recently diagnosed with colorectal, gastric, pancreatic, liver or thyroid cancer and normal tissues from 90 healthy individuals...
September 19, 2017: Cell Research
https://www.readbyqxmd.com/read/28923003/cleaning-by-clustering-methodology-for-addressing-data-quality-issues-in-biomedical-metadata
#11
Wei Hu, Amrapali Zaveri, Honglei Qiu, Michel Dumontier
BACKGROUND: The ability to efficiently search and filter datasets depends on access to high quality metadata. While most biomedical repositories require data submitters to provide a minimal set of metadata, some such as the Gene Expression Omnibus (GEO) allows users to specify additional metadata in the form of textual key-value pairs (e.g. sex: female). However, since there is no structured vocabulary to guide the submitter regarding the metadata terms to use, consequently, the 44,000,000+ key-value pairs in GEO suffer from numerous quality issues including redundancy, heterogeneity, inconsistency, and incompleteness...
September 18, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28922903/banking-on-living-kidney-donors-a-new-way-to-facilitate-donation-without-compromising-on-ethical-values
#12
Dominique E Martin, Gabriel M Danovitch
Public surveys conducted in many countries report widespread willingness of individuals to donate a kidney while alive to a family member or close friend, yet thousands suffer and many die each year while waiting for a kidney transplant. Advocates of financial incentive programs or "regulated markets" in kidneys present the problem of the kidney shortage as one of insufficient public motivation to donate, arguing that incentives will increase the number of donors. Others believe the solutions lie-at least in part-in facilitating so-called "altruistic donation;" harnessing the willingness of relatives and friends to donate by addressing the many barriers which serve as disincentives to living donation...
October 1, 2017: Journal of Medicine and Philosophy
https://www.readbyqxmd.com/read/28922683/reproducibility-reliability-and-agreement-of-post-exercise-hypotension
#13
Rafael Yokoyama Fecchio, Marcel Chehuen, Leandro Campos Brito, Tiago Peçanha, Andréia Cristiane Carrenho Queiroz, Claudia Lucia de Moraes Forjaz
This study determined the reproducibility of post-exercise hypotension (PEH) calculated by the following methods: PEH_I=post-exercise BP - pre-exercise BP; PEH_II=post-exercise BP - post-control BP; and PEH_III=[(post-exercise BP - pre-exercise BP)-(post-control BP - pre-control BP)]. Twenty-five participants underwent four sessions divided in two blocks (test and retest). Each block consisted of one exercise and one control session. BP pressure was measured before and after the interventions. The presence of systematic error (paired t-tests), reliability [intraclass coefficient correlation (ICC)], and agreement [typical error (TE) and minimal detectable difference (MDD)] were evaluated...
September 18, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28917733/stabilization-of-gas-phase-uranyl-complexes-enables-rapid-speciation-using-electrospray-ionization-and-ion-mobility-mass-spectrometry
#14
Austen L Davis, Brian H Clowers
Significant challenges exist when characterizing f-element complexes in solution using traditional approaches such as electrochemical and spectroscopic techniques as they do not always capture information for lower abundance species. However, provided a metal-complex with sufficient stability, soft ionization techniques such as electrospray offer a means to quantify and probe the characteristics of such systems using mass spectrometry. Unfortunately, the gas-phase species observed in ESI-MS systems do not always reflect the solution phase distributions due to the inherent electrochemical mechanism of the electrospray process, ion transfer from ambient to low pressures conditions, and other factors that are related to droplet evaporation...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28916172/biometric-verification-by-cross-correlation-analysis-of-12-lead-ecg-patterns-ranking-of-the-most-reliable-peripheral-and-chest-leads
#15
Vessela Krasteva, Irena Jekova, Roger Abächerli
BACKGROUND: Electrocardiogram (ECG)-based biometrics relies on the most stable and unique beat patterns, i.e. those with maximal intra-subject and minimal inter-subject waveform differences seen from different leads. We investigated methodology to evaluate those differences, aiming to rank the most prominent single and multi-lead ECG sets for biometric verification across a large population. METHODS: A clinical standard 12-lead resting ECG database, including 460 pairs of remote recordings (distanced 1year apart) was used...
August 16, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28915880/increasing-bladder-capacity-by-foot-stimulation-in-rats-with-spinal-cord-injuries
#16
Guoqing Chen, Limin Liao, Zhaoxia Wang, Xing Li, Wenjuan Du
BACKGROUND: This study was to explore the possibility that foot stimulation increased bladder capacity(BC) in rats with neurogenic bladder secondary to T10 spinal cord injuries. METHODS: In 20 awake rats (stimulation group) with T10 spinal cord injuries, 5 repeat cystometrograms (CMGs) were recorded. The 1st and 2nd CMGs were performed without stimulation. The 3rd, 4th, and 5th CMGs were done separately with 1 T, 2 T, and 4 T stimulation, respectively, through a pair of pad electrodes on the skin of the hind foot...
September 15, 2017: BMC Urology
https://www.readbyqxmd.com/read/28915836/changes-in-dna-methylation-in-na%C3%A3-ve-t-helper-cells-regulate-the-pathophysiological-state-in-minimal-change-nephrotic-syndrome
#17
Yasuko Kobayashi, Akira Aizawa, Takumi Takizawa, Katsuhide Igarashi, Izuho Hatada, Hirokazu Arakawa
BACKGROUND: DNA methylation plays a crucial role in regulating transcription, and changes in DNA methylation affect gene expression and disease development. Minimal change nephrotic syndrome (MCNS) has been reported to involve immunological disturbances. Since the characteristic features of the disease include recurrent relapse and sex and age preference, the disease pathogenesis may be partly related to epigenetic changes. However, little is known about these changes. METHODS: We analyzed genome-wide DNA methylation using the microarray-based integrated analysis of methylation by isoschizomers method...
September 15, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28911094/structure-cleavage-based-insights-into-helical-perturbations-at-bulge-sites-within-t-thermophilus-argonaute-silencing-complexes
#18
Gang Sheng, Tasos Gogakos, Jiuyu Wang, Hongtu Zhao, Artem Serganov, Stefan Juranek, Thomas Tuschl, Dinshaw J Patel, Yanli Wang
We have undertaken a systematic structural study of Thermus thermophilus Argonaute (TtAgo) ternary complexes containing single-base bulges positioned either within the seed segment of the guide or target strands and at the cleavage site. Our studies establish that single-base bulges 7T8, 5A6 and 4A5 on the guide strand are stacked-into the duplex, with conformational changes localized to the bulge site, thereby having minimal impact on the cleavage site. By contrast, single-base bulges 6'U7' and 6'A7' on the target strand are looped-out of the duplex, with the resulting conformational transitions shifting the cleavable phosphate by one step...
September 6, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28911011/evaluating-the-relationship-between-birth-weight-for-gestational-age-and-adult-blood-pressure-using-participants-from-a-cohort-of-same-sex-siblings-discordant-on-birth-weight-percentile
#19
Linda G Kahn, Stephen L Buka, Piera M Cirillo, Barbara A Cohn, Pam Factor-Litvak, Matthew W Gillman, Ezra Susser, L H Lumey
Many studies have described an inverse relationship between birth weight and blood pressure (BP). Debate continues, however, over the magnitude and validity of the association. This analysis draws on the Early Determinants of Adult Health study (2005-2008), a cohort of 393 US adults (mean age 43 years; 47% male), including 114 same-sex sibling pairs deliberately sampled to be discordant on sex-specific birth weight for gestational age (BW/GA) in order to minimize confounding in studies of fetal growth and midlife health outcomes...
September 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28906108/a-diaminopropane-appended-metal-organic-framework-enabling-efficient-co2-capture-from-coal-flue-gas-via-a-mixed-adsorption-mechanism
#20
Phillip J Milner, Rebecca L Siegelman, Alexander C Forse, Miguel I Gonzalez, Tomče Runčevski, Jeffrey D Martell, Jeffrey A Reimer, Jeffrey R Long
A new diamine-functionalized metal-organic framework comprised of 2,2-dimethyl-1,3-diaminopropane (dmpn) appended to the Mg(2+) sites lining the channels of Mg2(dobpdc) (dobpdc(4-) = 4,4'-dioxidobiphenyl-3,3'-dicarboxylate) is characterized for the removal of CO2 from the flue gas emissions of coal-fired power plants. Unique to members of this promising class of adsorbents, dmpn-Mg2(dobpdc) displays facile step-shaped adsorption of CO2 from coal flue gas at 40 °C and near complete CO2 desorption upon heating to 100 °C, enabling a high CO2 working capacity (2...
September 14, 2017: Journal of the American Chemical Society
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