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https://www.readbyqxmd.com/read/28532124/side-flow-effect-on-surface-generation-in-nano-cutting
#1
Feifei Xu, Fengzhou Fang, Xiaodong Zhang
The side flow of material in nano cutting is one of the most important factors that deteriorate the machined surface quality. The effects of the crystallographic orientation, feed, and the cutting tool geometry, including tool edge radius, rake angle and inclination angle, on the side flow are investigated employing molecular dynamics simulation. The results show that the stagnation region is formed in front of tool edge and it is characterized by the stagnation radius R s and stagnation height h s . The side flow is formed because the material at or under the stagnation region is extruded by the tool edge to flow to the side of the tool edge...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28532027/evaluation-of-different-surface-treatments-on-fiber-post-cemented-with-a-self-adhesive-system
#2
Maíra Prado, Juliana N Marques, Gisele Damiana Pereira, Eduardo M da Silva, Renata A Simão
Surface treatment of fiber-reinforced posts can increase adhesion, especially on the post/resin cement interface. The purpose of this in vitro study was to evaluate the effect of different surface treatments on fiber post cemented with a self-adhesive system. Sixty fiberglass epoxy resin posts were cleaned, dried and divided into 6 groups (n=10): Control (no surface treatment), silane (silane coupling agent was applied homogeneously on surface), 24% hydrogen peroxide (H2O2) (immersion during 1min), blasting (blasting with aluminum oxide for 30s), NH3 plasma (plasma treatment for 3min) and HMDSO plasma (plasma treatment for 15min)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531778/validity-assessment-of-the-nutrition-screening-initiative-checklist-in-older-adults
#3
Luna Strieder Vieira, Maria Cecília Formoso Assunção, Antônio Augusto Schäfer, Iná da Silva Dos Santos
OBJECTIVE: To ascertain whether the NSI (Nutrition Screening Initiative Checklist) is a valid screening instrument for diagnosing nutritional risk in an older population from a medium-size city in the south of Brazil. METHODS: The study population comprised individuals aged 60 years or older selected from a population-based cross-sectional survey. Data collection was carried out at two different timepoints: first, the NSI (instrument under test) was applied and later a dietary recall (gold standard) based on the previous day...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531567/impact-of-body-composition-parameters-on-clinical-outcomes-in-patients-with-metastatic-castrate-resistant-prostate-cancer-treated-with-docetaxel
#4
Samantha J Cushen, Derek G Power, Kevin P Murphy, Ray McDermott, Brendan T Griffin, Marvin Lim, Louise Daly, Peter MacEneaney, Kathleen O' Sullivan, Carla M Prado, Aoife M Ryan
BACKGROUND: Body composition may influence clinical outcomes of certain chemotherapeutic agents. We examined the prognostic significance of skeletal muscle mass and adipose tissue on docetaxel toxicity and overall survival in patients with metastatic castrate resistant prostate cancer (mCRPC). METHODS: A retrospective review of patients medical records with mCRPC, treated with docetaxel was conducted. Body composition parameters (skeletal muscle mass, muscle attenuation [MA], visceral and subcutaneous adipose tissue) were measured at L3 by computed tomography (CT) and defined using previously established cut points...
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531449/validity-of-the-adductor-pollicis-muscle-as-a-component-of-nutritional-screening-in-the-hospital-setting-a-systematic-review
#5
REVIEW
Charles Chin Han Lew, Fangyi Ong, Michelle Miller
BACKGROUND & AIMS: The thickness of the adductor pollicis muscle (TAPM) is the only muscle that can be directly measured with a caliper. Recent studies demonstrate that the TAPM could be used as part of nutritional screening, but this has not been systematically reviewed. We aimed to review the validity and reliability of TAPM in identifying malnutrition risk. METHODS: PubMed, CINAHL and Scopus were systematically searched. Eligible studies were cross-sectional, case-control or cohort studies which recruited adult patients in the hospital, measured the TAPM along with a valid nutritional assessment tool and evaluated the validity of TAPM with univariate, multivariate, discriminative and/or agreement statistics...
December 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531254/frailty-status-at-admission-to-hospital-predicts-multiple-adverse-outcomes
#6
Ruth E Hubbard, Nancye M Peel, Mayukh Samanta, Leonard C Gray, Arnold Mitnitski, Kenneth Rockwood
Aims: frailty is proposed as a summative measure of health status and marker of individual vulnerability. We aimed to investigate the discriminative capacity of a frailty index (FI) derived from interRAI Comprehensive Geriatric Assessment for Acute Care (AC) in relation to multiple adverse inpatient outcomes. Methods: in this prospective cohort study, an FI was derived for 1,418 patients ≥70 years across 11 hospitals in Australia. The interRAI-AC was administered at admission and discharge by trained nurses, who also screened patients daily for geriatric syndromes...
May 22, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28531236/psychosine-enhances-the-shedding-of-membrane-microvesicles-implications-in-demyelination-in-krabbe-s-disease
#7
Ludovic D'Auria, Cory Reiter, Emma Ward, Ana Lis Moyano, Michael S Marshall, Duc Nguyen, Giuseppe Scesa, Zane Hauck, Richard van Breemen, Maria I Givogri, Ernesto R Bongarzone
In prior studies, our laboratory showed that psychosine accumulates and disrupts lipid rafts in brain membranes of Krabbe's disease. A model of lipid raft disruption helped explaining psychosine's effects on several signaling pathways important for oligodendrocyte survival and differentiation but provided more limited insight in how this sphingolipid caused demyelination. Here, we have studied how this cationic inverted coned lipid affects the fluidity, stability and structure of myelin and plasma membranes...
2017: PloS One
https://www.readbyqxmd.com/read/28531224/defining-the-vaccination-window-for-respiratory-syncytial-virus-rsv-using-age-seroprevalence-data-for-children-in-kilifi-kenya
#8
Joyce U Nyiro, Ivy K Kombe, Charles J Sande, James Kipkoech, Patience K Kiyuka, Clayton O Onyango, Patrick K Munywoki, Timothy M Kinyanjui, D James Nokes
BACKGROUND: Respiratory syncytial virus (RSV) is an important cause of lower respiratory tract disease in early life and a target for vaccine prevention. Data on the age-prevalence of RSV specific antibodies will inform on optimizing vaccine delivery. METHODS: Archived plasma samples were randomly selected within age strata from 960 children less than 145 months of age admitted to Kilifi County Hospital pediatric wards between 2007 and 2010. Samples were tested for antibodies to RSV using crude virus IgG ELISA...
2017: PloS One
https://www.readbyqxmd.com/read/28531213/perfusion-mr-imaging-detection-of-carcinoma-arising-from-preexisting-salivary-gland-pleomorphic-adenoma-by-computer-assisted-analysis-of-time-signal-intensity-maps
#9
Ikuo Katayama, Sato Eida, Shuichi Fujita, Yuka Hotokezaka, Misa Sumi, Takashi Nakamura
Tumor perfusion can be evaluated by analyzing the time-signal intensity curve (TIC) after dynamic contrast-enhanced (DCE) MR imaging. Accordingly, TIC profiles are characteristic of some benign and malignant salivary gland tumors. A carcinoma ex pleomorphic adenoma (CXPA) arises from a long-standing pleomorphic adenoma (PA) and has a distinctive prognostic risk depending on the tumor growth potential such as invasion beyond the preexisting capsule. Differentiating CXPA from PA can be very challenging. In this study, we have attempted to discriminate CXPA from PA based on a two-dimensional TIC mapping algorithm...
2017: PloS One
https://www.readbyqxmd.com/read/28530581/metabolic-phenotyping-of-various-tea-camellia-sinensis-l-cultivars-and-understanding-of-their-intrinsic-metabolism
#10
Hyang-Gi Ji, Yeong-Ran Lee, Min-Seuk Lee, Kyeong Hwan Hwang, Eun-Hee Kim, Jun Seong Park, Young-Shick Hong
Recently, we selected three tea (Camellia sinensis) cultivars that are rich in taste, epigallocatechin-3-O-gallate (EGCG) and epigallocatechin-3-O-(3-O-methyl)-gallate (EGCG3″Me) and then cultivated them through asexual propagation by cutting in the same region. In the present study, proton nuclear magnetic resonance ((1)H NMR)-based metabolomics was applied to characterize the metabotype and to understand the metabolic mechanism of these tea cultivars including wild type tea. Of the tea leaf metabolite variations, reverse associations of amino acid metabolism with catechin compound metabolism were found in the rich-taste, and EGCG- and EGCG3″Me-rich tea cultivars...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530444/real-world-strategies-to-engage-and-retain-racial-ethnic-minority-young-men-who-have-sex-with-men-in-hiv-prevention-services
#11
Thomas E Freese, Howard Padwa, Brandy T Oeser, Beth A Rutkowski, Marya T Schulte
Racial/ethnic minority young men who have sex with men (YMSM)-particularly African Americans and Hispanics/Latinos-are at particularly high risk for HIV infection. Devising strategies to improve engagement and retention in HIV prevention services among minority YMSM is critical if the United States is going to achieve the National HIV/AIDS Strategy goal of reducing HIV health-related disparities. This article presents findings from a national summit on racial/ethnic YMSM services convened by the Substance Abuse and Mental Health Services Administration-funded Center of Excellence on Racial and Ethnic Minority Young Men Who Have Sex with Men and Other Lesbian, Gay, Bisexual, and Transgender Populations (YMSM + LGBT CoE) in September 2015...
May 22, 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28530394/electrogeneration-of-gold-nanoparticles-on-porous-carbon-paper-based-electrodes-and-application-to-inorganic-arsenic-analysis-in-white-wines-by-chronoamperometric-stripping
#12
Estefanía Nunez-Bajo, Maria Carmen Blanco-López, Agustin Costa-García, M Teresa Fernández-Abedul
This paper describes the development of simple, sustainable and low-cost strategies of signal enhancement on paper-based carbon platforms through gold nanoparticles electrogenerated from small volumes of tetrachloroauric acid solutions. Carbon ink is deposited in a hydrophilic working area of the paper delimited with hydrophobic wax. This maskless procedure is fast and cuts down ink waste. The connection of this working electrode to the potentiostat is ensured with the use of screen-printed electrodes (SPEs)...
May 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28529616/lymphocyte-monocyte-ratio-is-a-novel-predictor-for-early-stage-extranodal-natural-killer-t-cell-lymphoma-nasal-type
#13
Qiao-Xuan Wang, Shao-Hua Li, Bao-Yan Ji, Han-Yu Wang, Yi-Yang Li, Ling-Ling Feng, Kai Chen, Yun-Fei Xia, Yu-Jing Zhang
Objective: Great heterogeneity exists in clinical behavior and survival outcome in patients with stage IE/IIE extranodal natural killer/T-cell lymphoma, nasal type (ENKTL). In this study, we proposed lymphocyte/monocyte ratio (LMR) as a new prognostic factor for these early stage ENKTL. Methods: We retrospectively examined the LMR as a prognostic variable in a cohort of 379 patients with newly diagnosed stage IE/IIE ENKTL. The relationship between the LMR and clinicopathologic variables were analyzed in Kaplan-Meier log-rank survival analysis, and the Cox proportional hazards model was used to determine the survival significance of the LMR for both progression-free survival (PFS) and overall survival (OS)...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28529597/dysregulation-of-mir-638-in-hepatocellular-carcinoma-and-its-clinical-significance
#14
Jiwen Cheng, Yanke Chen, Pu Zhao, Na Li, Jianwen Lu, Jianhui Li, Zhengwen Liu, Yi Lv, Chen Huang
MicroRNAs (miRNAs/miRs) have been identified as important post-transcriptional regulators in healthy liver physiology and liver diseases. However, the clinical significance of miR-638 in hepatocellular carcinoma (HCC) remains unclear. The aim of the present study was to investigate the status of miR-638 expression in HCC and to determine its clinical significance. The expression of miR-638 was evaluated in 60 HCC tissues samples and HCC SMMC-7721, HepG2 and Hep3B cell lines using reverse transcription-quantitative polymerase chain reaction...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529592/unique-insight-into-microenvironmental-changes-in-colorectal-cancer-ex-vivo-assessment-of-matrix-metalloprotease-mediated-molecular-changes-in-human-colorectal-tumor-tissue-and-corresponding-non-neoplastic-adjacent-tissue
#15
Nicholas Willumsen, Cecilie L Bager, Anne-Christine Bay-Jensen, Stephanie N Kehlet, Henrik Harling, Diana J Leeming, Morten A Karsdal, Lars N Jorgensen
Matrix metalloprotease (MMP)-mediated tissue remodeling is one of the malignant changes driving colorectal cancer. Measurement of altered MMP expression/activity is not sufficient to fully understand the effect of MMP-mediated tissue remodeling. Biomarkers are required that specifically reflect the dynamic processes of the MMP-mediated degradation of signature proteins from colorectal tissue. The aim of the present study was to profile and characterize the release of MMP-degraded type III collagen (C3M) and citrullinated and MMP-degraded vimentin (VICM) from tumor tissue and corresponding non-neoplastic adjacent tissue (NAT) in a human colorectal cancer ex vivo model...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529343/excellent-auc-for-joint-fluid-cytology-in-the-detection-exclusion-of-hip-and-knee-prosthetic-joint-infection
#16
Jiri Gallo, Jarmila Juranova, Michal Svoboda, Jana Zapletalova
BACKGROUND AND AIM: The aim of this study was to evaluate the characteristics of synovial fluid (SF) white cell count (SWCC) and neutrophil/lymphocyte percentage in the diagnosis of prosthetic joint infection (PJI) for particular threshold values. METHODS AND RESULTS: This was a prospective study of 391 patients in whom SF specimens were collected before total joint replacement revisions. SF was aspirated before joint capsule incision. The PJI diagnosis was based only on non-SF data...
May 15, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28529274/pleomorphic-adenoma-of-the-labial-gland-characterized-by-reticular-pattern-of-myoepithelial-cells-in-a-dog
#17
Mizuki Kuramochi, Takeshi Izawa, Shin Nishimura, Terumasa Shimada, Mitsuru Kuwamura, Jyoji Yamate
An 11-year-old female golden retriever dog had a mass at the right corner of the upper lip, which gradually increased in size and protruded into the oral cavity. The mass was removed surgically. The cut surface of the mass was smooth, whitish and solid, and covered by the oral mucosal membrane. Histopathologically, the mass consisted mainly of reticular pattern of short spindle cells that stained positively for cytokeratin AE1/AE3, α-smooth muscle actin and p63, suggestive of a myoepithelial cell phenotype...
May 20, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28529266/preoperative-biliary-drainage-versus-direct-surgery-for-perihilar-cholangiocarcinoma-a-retrospective-study-at-a-single-center
#18
Yulong Cai, Qi Tang, Xianze Xiong, Fuyu Li, Hui Ye, Peipei Song, Nansheng Cheng
Perihilar cholangiocarcinoma (pCC, also known as a Klatskin tumor) is the most common type of cholangiocarcinoma (CC). Preoperative biliary drainage (PBD) is indicated for pCC patients with acute cholangitis or patients who need portal vein embolization (PVE). However, the routine performance of PBD in other patients with pCC is still controversial. The current study retrospectively examined patients with pCC who did not undergo PVE and who did not have cholangitis who were seen at this Hospital to assess the advantages and disadvantages of PBD...
May 22, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28529199/can-fetuin-a-be-a-marker-for-insulin-resistance-and-poor-glycemic-control-in-children-with-type-1-diabetes-mellitus
#19
Ülkü Gül Sıraz, Murat Doğan, Nihal Hatipoğlu, Sabahttin Muhtaroğlu, Selim Kurtoğlu
OBJECTIVE: Backgroud Metabolic impairment in Type 1 Diabetes Mellitus (DM) with poor glycemic control causes insulin resistance, Non-Alcoholic Fatty Liver Disease (NAFLD) and atherosclerosis; thus, increased Carotid-intima media thickness (CIMT). The Fetuin-A has protective effect in cardiovascular disorders, which is increased in hepatosteatosis. We aimed to investigate reliability of Fetuin-A levels in early detection of diabetic complications in children with T1DM and to identify a cut-off value that may show poor metabolic control...
May 22, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28529103/the-importance-of-lymph-node-ratio-for-locoregional-recurrence-of%C3%A2-squamous-cell-carcinoma-of-the-tongue
#20
Ali-Farid Safi, Andrea Grandoch, Hans-Joachim Nickenig, Joachim E Zöller, Matthias Kreppel
INTRODUCTION: Locoregional recurrence plays a key role in treatment failure of patients with squamous cell carcinoma of the tongue. In a large amount of studies lymph node ratio could be demonstrated as a promising parameter to stratify risk of patients with oral cavity cancer. However data on the influence of lymph node ratio on locoregional recurrence of tongue squamous cell carcinoma is very rare. MATERIAL AND METHODS: Retrospective chart review of 130 patients with treatment naive squamous cell carcinoma of the tongue...
April 22, 2017: Journal of Cranio-maxillo-facial Surgery
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