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https://www.readbyqxmd.com/read/28803814/revision-total-hip-arthroplasty-with-a-monoblock-splined-tapered-grit-blasted-titanium-stem
#1
Michael D Hellman, Sean M Kearns, Daniel D Bohl, Bryan D Haughom, Brett R Levine
BACKGROUND: In revision total hip arthroplasty (THA), proximal femoral bone loss creates a challenge of achieving adequate stem fixation. The purpose of this study was to examine the outcomes of a monoblock, splined, tapered femoral stem in revision THA. METHODS: Outcomes of revision THA using a nonmodular, splined, tapered femoral stem from a single surgeon were reviewed. With a minimum of 2-year follow-up, there were 68 cases (67 patients). Paprosky classification was 3A or greater in 85% of the cases...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28798209/gender-math-confidence-and-grit-relationships-with-quantitative-skills-and-performance-in-an-undergraduate-biology-course
#2
K M Flanagan, J Einarson
In a world filled with big data, mathematical models, and statistics, the development of strong quantitative skills is becoming increasingly critical for modern biologists. Teachers in this field must understand how students acquire quantitative skills and explore barriers experienced by students when developing these skills. In this study, we examine the interrelationships among gender, grit, and math confidence for student performance on a pre-post quantitative skills assessment and overall performance in an undergraduate biology course...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28747368/fusarium-keratitis-in-germany
#3
Grit Walther, Serena Stasch, Kerstin Kaerger, Axel Hamprecht, Mathias Roth, Oliver A Cornely, Gerd Geerling, Colin R Mackenzie, Oliver Kurzai, Marie von Lilienfeld-Toal
Fusarium keratitis is a destructive eye infection that is difficult to treat and which results in poor outcome. In the tropical and subtropical areas the infection is relatively common and associated with trauma or chronic eye diseases. However, in recent years, an increased incidence has been reported in temperate climate regions. At the German National Reference Center, we observed a steady increase in case numbers since 2014. Here, we present the first German case series of eye infections with Fusarium spp...
July 26, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28741292/effect-of-mdp-based-silane-and-different-surface-conditioner-methods-on-bonding-of-resin-cements-to-zirconium-framework
#4
Hatice Özdemir, Nuran Yanikoğlu, Nurdan Sağsöz
PURPOSE: To determine the shear bond strength (SBS) between zirconium framework and resin cements after different surface conditioner methods and after application of 10-methacryloyloxydecyl dihydrogen phosphate (MDP) based silane and a bonding agent mix. MATERIALS AND METHODS: 128 disc-shaped zirconium-oxide specimens were prepared. Specimens were placed in autopolymerizing acrylic resin. The bonding surface of specimens was smoothed consecutively with 600-, 800-, and 1200-grit silicon carbide papers under water cooling...
July 24, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28733068/effects-of-eu-harmonization-policies-on-national-public-supervision-of-clinical-trials-a-dynamic-cycle-of-institutional-change-and-institutional-work
#5
Jacqueline C F van Oijen, Kor J Grit, Hester M van de Bovenkamp, Roland A Bal
BACKGROUND: The EU Clinical Trials Directive (EUCTD) and the EU Clinical Trials Regulation aim to harmonize good clinical practice (GCP) of clinical trials across Member States. Using the Netherlands as a case study, this paper analyzes how endeavours to implement the EUCTD set in motion a dynamic process of institutional change and institutional work. This process lead to substantial differences between policy and actual practice; therefore, it is important to learn more about the implementation of harmonization policies...
June 30, 2017: Health Policy
https://www.readbyqxmd.com/read/28732104/reciprocal-feedback-between-self-concept-and-goal-pursuit-in-daily-life
#6
Alexander E Wong, Robin R Vallacher
OBJECTIVE: We hypothesized that self-knowledge and goal-perseverance are mutually reinforcing because of the roles of self-knowledge in directing goal pursuit, and of goal pursuit in structuring the self-concept. METHOD: To test this hypothesis, we used a daily diary design with 97 college-aged participants for 40 days to assess whether daily self-concept clarity and grit predict one another's next day levels. Data were analyzed using multilevel cross-lagged panel modeling...
July 21, 2017: Journal of Personality
https://www.readbyqxmd.com/read/28730623/effects-of-fluoride-modified-titanium-surfaces-with-the-similar-roughness-on-runx2-gene-expression-of-osteoblast-like-mg63-cells
#7
Ji-Hyoun Lee, Jai-Young Koak, Young-Jun Lim, Ho-Beom Kwon, Hyunjoon Kong, Myung-Joo Kim
Chemical modification of titanium surfaces by hydrofluoric acid (HF) is an effective method to improve bone responses on titanium implant surfaces. In the present study, titanium disks were sandblasted with titanium oxide grits and modified with 0.2% and 0.4% of diluted HF under different exposure times of 40 and 60 s. Surface characteristics, such as surface chemical composition, surface topography, and surface wettability, were investigated. To examine MG63 osteoblast-like cell responses to fluoride-modified titanium surfaces with roughness similar to that of nonmodified surfaces, a cell proliferation assay was performed and gene expression levels of Runx2 were evaluated using real-time PCR...
July 21, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28727468/effect-of-finishing-procedures-on-the-surface-roughness-of-resin-modified-glass-ionomer-materials
#8
Mohammad Garshasb, Gildo C Santos, Amin S Rizkalla, Richard Bohay, M Jacinta Santos
This study examined the influence of finishing procedures on the surface roughness of different formulations of resin-modified glass ionomers (RMGIs) available in capsules compared with standard resin composites (RCs). Disc samples of three RMGIs and two RCs were fabricated using a metal mold (5 mm x 1.5 mm). Samples were randomly divided into seven groups (N = 10) and subjected to finishing and polishing procedures using a combination of carbide or diamond burs, followed by either rubber points or aluminum-oxide discs...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28715412/cell-fate-specification-in-the-lingual-epithelium-is-controlled-by-antagonistic-activities-of-sonic-hedgehog-and-retinoic-acid
#9
Maha El Shahawy, Claes-Göran Reibring, Cynthia L Neben, Kristina Hallberg, Pauline Marangoni, Brian D Harfe, Ophir D Klein, Anders Linde, Amel Gritli-Linde
The interaction between signaling pathways is a central question in the study of organogenesis. Using the developing murine tongue as a model, we uncovered unknown relationships between Sonic hedgehog (SHH) and retinoic acid (RA) signaling. Genetic loss of SHH signaling leads to enhanced RA activity subsequent to loss of SHH-dependent expression of Cyp26a1 and Cyp26c1. This causes a cell identity switch, prompting the epithelium of the tongue to form heterotopic minor salivary glands and to overproduce oversized taste buds...
July 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28713512/laboratory-evaluation-of-the-effect-of-unfilled-resin-after-the-use-of-self-etch-and-total-etch-dentin-adhesives-on-the-shear-bond-strength-of-composite-to-dentin
#10
Ehsan Baradaran Nasseri, Sara Majidinia, Davood Aghasizadeh Sharbaf
BACKGROUND: Based on the frequent application of composite resins as tooth-colored fillings, this method is considered a viable alternative to dental amalgam. However, this method has the low bond strength of the composite to dentin. To solve this issue, various dental adhesive systems with different characteristics have been developed by dentistry experts. AIM: To assess the effect of an additional layer of unfilled resin in self-etch and total-etch dentin adhesives on the shear bond strength (SBS) of composite to dentin...
May 2017: Electronic Physician
https://www.readbyqxmd.com/read/28710982/occurrence-fate-and-mass-balance-of-different-classes-of-pharmaceuticals-and-personal-care-products-in-an-anaerobic-anoxic-oxic-wastewater-treatment-plant-in-xiamen-china
#11
Muhammad Ashfaq, Yan Li, Yuwen Wang, Wenjie Chen, Han Wang, Xiangqiang Chen, Wei Wu, Zhenyi Huang, Chang-Ping Yu, Qian Sun
In this study, the occurrence and fate of 49 pharmaceuticals and personal care products (PPCPs) were investigated in an anaerobic-anoxic-oxic (A2/O) wastewater treatment plant (WWTP) for seven consecutive days using 24-h composite sampling technique. Special emphasis was placed to understand the distribution of PPCPs in dissolved and adsorbed phase, and to evaluate PPCP fate in different treatment units. Among the 49 PPCPs, 40 PPCPs in influent, 36 in effluent, 29 in sludge and 23 in suspended solids were detected at least once during sampling...
July 7, 2017: Water Research
https://www.readbyqxmd.com/read/28708908/activation-of-osteoblastic-function-on-titanium-surface-with-titanium-doped-hydroxyapatite-nanoparticle-coating-an-in-vitro-study
#12
Masahiro Nakazawa, Masahiro Yamada, Masato Wakamura, Hiroshi Egusa, Kaoru Sakurai
PURPOSE: Titanium-doped hydroxyapatite (TiHA) nanoparticles contain titanium atoms in the hydroxyapatite lattice, which can physicochemically functionalize the titanium surface without modification of the surface topography. This study aimed to evaluate the physicochemical properties of machined or microroughened titanium surfaces coated with TiHA nanoparticles and the functions of osteoblasts cultured on them. MATERIALS AND METHODS: Titanium disks with commercially available surface topography, such as machined or sandblasted, large-grit, and acid-etched (SLA) surfaces, were coated with TiHA...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28708029/effect-of-surface-roughness-in-model-and-fresh-fruit-systems-on-microbial-inactivation-efficacy-of-cold-atmospheric-pressure-plasma
#13
Siddharth Bhide, Deepti Salvi, Donald W Schaffner, Mukund V Karwe
This study investigates the efficacy of cold atmospheric pressure plasma (CAPP) on microbial inactivation as influenced by surface roughness of two types of surfaces: sandpaper and fresh fruit peel. Different grits of closed-coat sandpaper were selected, with their roughness (Pq) values ranging from 6 to 16 μm. Apple, orange, and cantaloupe peels were selected for roughness values that were similar to the sandpapers. The sandpapers and the fruit peel surfaces were spot inoculated with Enterobacter aerogenes (10(9) CFU/63...
July 14, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28707226/the-role-of-macrophage-polarization-on-fibroblast-behavior-an-in-vitro-investigation-on-titanium-surfaces
#14
Xuzhu Wang, Yulan Wang, Dieter D Bosshardt, Richard J Miron, Yufeng Zhang
OBJECTIVES: This study investigated the effect of smooth and rough titanium surface topographies on macrophage polarization and their influence on gingival fibroblast behavior cultured on titanium surfaces. MATERIALS AND METHODS: RAW 264.7 macrophages were seeded on smooth (pickled titanium (PT)) and rough Sand-blasted with Large grit particles followed by Acid-etching (SLA) titanium surfaces and first investigated for macrophage polarization towards tissue-inflammatory M1 macrophages or wound-healing M2 macrophages...
July 14, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28705449/-venous-thromboembolic-disease-comparison-of-management-practices-in-france-italy-and-spain
#15
A Maurizot, A Bura-Rivière, K Gritli, L Bertoletti, L Hernández-Blasco, M Ciammaichella, M C Díaz-Pedroche, M Alfonso, M A Lorente, M Monreal
BACKGROUND: Many national and international guidelines have been established for venous thromboembolic disease (VTE). Homogeneous management practices could be expected in the different European countries. To verify this hypothesis, we compared practices in France, Italy and Spain. METHOD: We used data from the international RIETE registry to compare VTE management between France, Italy and Spain. RESULTS: From 2001 January to 2011 January, patients were consecutively included in France (n=1548), Italy (n=2083) and Spain (29,824)...
February 2017: J Med Vasc
https://www.readbyqxmd.com/read/28694471/evaluate-the-effect-of-different-mmps-inhibitors-on-adhesive-physical-properties-of-dental-adhesives-bond-strength-and-mmp-substarte-activity
#16
Pei Zheng, Hui Chen
We have evaluated and compare the effect of different exogenous MMP inhibitors on adhesive physical properties of dental adhesives, bond strength, micro permeability and MMP substrate activity. 180-grit Sic paper was used to obtain the superficial dentin surface from each and every tooth after the wet grinding procedure. Dentin was exposed to four different MMP inhibitors to evaluate the effect on resin adhesive dentin interface. The four groups used in study were: 2% chlorhexidine digluconate, 2% doxycycline solution, 5% Proanthocyanidin (PR), Control Group...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28691590/removal-of-diclofenac-from-water-by-in-out-pac-uf-hybrid-process
#17
Ivana Ivančev-Tumbas, Grit Hoffmann, Ralph Hobby, Đurđa Kerkez, Aleksandra Tubić, Spomenka Babić-Nanić, Stefan Panglisch
Results from a lab-scale investigation of a combined in/out ultrafiltration and powdered activated carbon adsorption (PAC/UF) for removal of diclofenac (c0=5 mg/L) are presented. The efficiency of the process was compared for single pulse and continuous carbon dosing (PAC dose 5 mg/L) in dechlorinated tap water under fluxes of 87 and 135 L/(m(2)·h). For higher flux conditions it was observed that single pulse dosing has an advantage over continuous dosing procedure when comparing cycle average removal efficiency...
July 10, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28680714/characteristics-of-contact-and-distance-osteogenesis-around-modified-implant-surfaces-in-rabbit-tibiae
#18
Jung-Yoo Choi, Jae-Hyuk Sim, In-Sung Luke Yeo
PURPOSE: Contact and distance osteogenesis occur around all endosseous dental implants. However, the mechanisms underlying these processes have not been fully elucidated. We hypothesized that these processes occur independently of each other. To test this, we used titanium (Ti) tubes to physically separate contact and distance osteogenesis, thus allowing contact osteogenesis to be measured in the absence of possible triggers from distance osteogenesis. METHODS: Sandblasted and acid-etched (SLA) and modified SLA (modSLA) implants were used...
June 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28673202/the-study-on-mental-health-at-work-design-and-sampling
#19
Uwe Rose, Stefan Schiel, Helmut Schröder, Martin Kleudgen, Silke Tophoven, Angela Rauch, Gabriele Freude, Grit Müller
AIMS: The Study on Mental Health at Work (S-MGA) generates the first nationwide representative survey enabling the exploration of the relationship between working conditions, mental health and functioning. This paper describes the study design, sampling procedures and data collection, and presents a summary of the sample characteristics. METHODS: S-MGA is a representative study of German employees aged 31-60 years subject to social security contributions. The sample was drawn from the employment register based on a two-stage cluster sampling procedure...
July 1, 2017: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/28667466/safety-pharmacokinetic-and-clinical-activity-profiles-of-ramucirumab-in-combination-with-three-platinum-fluoropyrimidine-doublets-in-japanese-patients-with-chemotherapy-na%C3%A3-ve-metastatic-gastric-gastroesophageal-junction-cancer
#20
Kohei Shitara, Shigenori Kadowaki, Tomohiro Nishina, Daisuke Sakai, Reigetsu Yoshikawa, Yongzhe Piao, Akihiro Ozeki, Koichi Inoue, Ismael Gritli, Kei Muro
BACKGROUND: We evaluated the safety, tolerability, pharmacokinetics, and tumor response of ramucirumab in combination with one of three platinum/fluoropyrimidine regimens in Japanese patients with chemotherapy-naïve metastatic gastric/gastroesophageal junction cancer. METHODS: In this phase 1b study, patients received 8 mg/kg ramucirumab on days 1 and 8 every 3 weeks, following one of three regimens: capecitabine + cisplatin, XP; S-1 + cisplatin, SP; or S-1 + oxaliplatin, SOX...
June 30, 2017: Gastric Cancer
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