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https://www.readbyqxmd.com/read/29145056/environmental-life-cycle-assessment-of-marine-sediment-decontamination-by-citric-acid-enhanced-microwave-heating
#1
Pietro P Falciglia, Carlo Ingrao, Guido De Guidi, Alfio Catalfo, Guglielmo Finocchiaro, Marcello Farina, Maria Liali, Giuseppe Lorenzano, Gaetano Valastro, Federico G A Vagliasindi
The potential ability of microwave heating (MWH) for the remediation of marine sediments affected by severe hydrocarbon (HC) contamination was investigated. Decontamination effectiveness and environmental sustainability through a comparative Life Cycle Assessment (LCA) were addressed. Main results revealed that the application of a 650-W MWH treatment resulted in a rapid (15min) HC removal. A citric acid (CA) dose of 0.1M led to enhanced-HC removals of 76.9, 96.5 and 99.7% after 5, 10 and 15min of MW irradiation, respectively...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29144011/a-gold-catalyzed-domino-cyclization-enabling-rapid-construction-of-diverse-polyheterocyclic-frameworks
#2
Erik Van der Eycken, Yi He, Zhenghua Li, Koen Robeyns, Luc Van Meervelt
We report herein an efficient gold(I)-catalyzed post-Ugi domino dearomatization/ipso-cyclization/Michael sequence that enables access to libraries of diverse (hetero)arene-annulated tricyclic heterocycles. This process affords novel complex polycyclic scaffolds in moderate to good yields from readily available acyclic precursors with excellent chemo-, regio-, and diastereo-selectivity. The power of this strategy has been demonstrated by the rapid synthesis of 40 highly functionalized polyheterocycles bearing indole, pyrrole, (benzo)furan, (benzo)thiophene, pyrazole and electron-rich arenes in two-operational steps...
November 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29143129/competitive-co-operative-interactions-in-acid-base-sandwich-role-of-cation-vs-substituents
#3
Ayyavoo Kalpana, Lakshminarayanan Akilandeswari
The cation-π interaction can be envisaged as a lewis acid base interaction, and it is in line with Pearson's acid base concept. The critical examination of interactions between the π-acids (alkali metal cations - Li(+), Na(+) and alkaline earth metal cations Mg(2+), Ca(2+)) on one face and tripodal Cr(CO)3 moiety on the other π face of substituted arenes demonstrates the role of cation and substitutents in manipulating the interactions between them. The interaction of the two π acids on both faces of arene is not expectedly additive, rather it shows either depreciation of interaction energy revealing the competition of acids toward the base or enhancement of interaction energy denoting a cooperative effect...
November 15, 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/29142760/outcomes-of-primary-endoresection-for-choroidal-melanoma
#4
Andre A C Vidoris, Andre Maia, Marcia Lowen, Melina Morales, Jordan Isenberg, Bruno F Fernandes, Rubens N Belfort
Purpose: To review long time treatment results in patients with small or medium sized choroidal melanoma who underwent surgical tumor endoresection as a primary treatment when plaque radiotherapy was unable and patients declined enucleation. Materials and methods: Patients were evaluated for best corrected visual acuity (BCVA), and underwent biomicroscopy, indirect ophthalmoscopy, retinography and ultrasound as well as the usual systemic workup. Study inclusion required the absence of scleral invasion or metastasis and an anterior margin not exceeding the pars plana or the ciliary body...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/29141613/determinants-of-patient-satisfaction-following-reconstructive-shoulder-surgery
#5
Sascha J Baettig, Karl Wieser, Christian Gerber
BACKGROUND: Obtaining patient satisfaction is a key goal of surgical treatment. It was the purpose of this study to identify pre-, peri- and postoperative factors determining patient satisfaction after shoulder surgery, quantify their relative importance and thereby allow the surgeon to focus on parameters, which will influence patient satisfaction. METHODS: We retrospectively reviewed 505 patients, who underwent either rotator cuff repair (n = 216) or total shoulder arthroplasty (n = 289)...
November 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29141360/-total-hip-arthroplasty-in-patients-with-psoriatic-arthritis
#6
Y Li, X S Weng, J Lin, J Jin, W W Qian
Objective: To evaluate the clinical efficacy of Total hip arthroplasty (THA) in treating the hip joint involvement of Psoriatic arthritis (PsA). Methods: From January 2005 to December 2016, a total of 15 PsA patients (20 hip joints) underwent THA in Department of Orthopaedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College. All the patients had obvious restriction in daily life before operation. The mean Harris score was 25.2 averagely and the mean total range of the hip joint movement was 39...
November 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29140904/reconstruction-of-microtias-with-constricted-ear-features-a-22-year-experience
#7
Chul Park, Jung Youl Park
BACKGROUND: The surgical correction of 'microtias with constricted ear features' has remained a challenge due to the variable shape and large volume of the remnant cartilage and skin involved. In order to clarify how this remnant cartilage and skin should be treated, we have reviewed and analyzed cases operated at our Center. METHODS: A total of 167 cases of Microtia with Constricted Ear Features, operated from 1992 to 2014, were included in the study. They were reviewed through medical records and photographs, analysis of surgical methods, and postoperative outcomes...
November 11, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29139293/ti-doped-gaox-resistive-switching-memory-with-self-rectifying-behavior-by-using-nbox-pt-bilayers
#8
Ju Hyun Park, Dong Su Jeon, Tae Geun Kim
Crossbar arrays (CBA) with resistive random access memory (ReRAM) constitute an established architecture for high-density memory. However, sneak paths via unselected cells increase the total power consumption of these devices, and limit the array size. To eliminate such sneak path problems, we propose a Ti/GaOx/NbOx/Pt structure with self-rectifying resistive-switching (RS) behavior. In this structure, to reduce the operating voltage, we used a Ti/GaOxstack to increase the number of trap sites in the RS GaOx layer, through interfacial reactions between the Ti and GaOx layers...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29138942/calculation-of-left-ventricular-volumes-and-ejection-fraction-from-dynamic-cardiac-gated-15-o-water-pet-ct-5d-pet
#9
Jonny Nordström, Tanja Kero, Hendrik Johannes Harms, Charles Widström, Frank A Flachskampf, Jens Sörensen, Mark Lubberink
BACKGROUND: Quantitative measurement of myocardial blood flow (MBF) is of increasing interest in the clinical assessment of patients with suspected coronary artery disease (CAD). (15)O-water positron emission tomography (PET) is considered the gold standard for non-invasive MBF measurements. However, calculation of left ventricular (LV) volumes and ejection fraction (EF) is not possible from standard (15)O-water uptake images. The purpose of the present work was to investigate the possibility of calculating LV volumes and LVEF from cardiac-gated parametric blood volume (V B) (15)O-water images and from first pass (FP) images...
November 14, 2017: EJNMMI Physics
https://www.readbyqxmd.com/read/29138920/concurrent-arthroscopic-osteochondral-lesion-treatment-and-lateral-ankle-ligament-repair-has-no-substantial-effect-on-the-outcome-of-chronic-lateral-ankle-instability
#10
Dong Jiang, Yin-Fang Ao, Chen Jiao, Xing Xie, Lin-Xin Chen, Qin-Wei Guo, Yue-Lin Hu
PURPOSE: The purpose of the study was to evaluate the effect of concurrent arthroscopic osteochondral lesion (OCL) treatment and lateral ankle ligament repair on the outcome of chronic lateral ankle instability. It was hypothesized that the arthroscopic OCL treatment might have some negative effect on the outcome of chronic lateral ankle instability (CLAI) by compromising the rehabilitation program. METHODS: Ankle arthroscopy and anatomic lateral ankle ligament repair with suture anchors were performed for 70 patients with CLAI between 2010 and 2012...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29137295/clinical-outcome-of-dynamic-hip-locking-plates-and-proximal-femoral-nails-anti-rotation-asia-for-treating-intertrochanteric-femur-fracture-with-lateral-wall-fractures-in-the-elder-patients
#11
Hui Xie, Zhan Wang, Junji Zhang, Langhai Xu, Bao Chen
Purpose: To compare the clinical results of DHLP (Dynamic hip locking plates) and PFNA-IIs (proximal femoral nails anti-rotation-Asia) for treating intertrochanteric femur fracture (IFF) with lateral wall fractures in the elder patients and provide a rationale for the clinical practice. Methods: A retrospective analysis of 43 patients of IFF with lateral wall fractures was performed from December 2009 to April 2015. Intraoperative variables and postoperative complications and function were compared between the two groups...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137080/a-medium-term-follow-up-of-adult-lumbar-tuberculosis-treating-with-3-surgical-approaches
#12
Qi Hong Zhang, Qiang Guo, Chaofeng Guo, Jianhuang Wu, Jinyang Liu, Qile Gao, Yuxiang Wang
Surgical intervention is an important option for treating lumbar tuberculosis. Previous studies have reported different surgical intervention procedures. To our knowledge, few studies have compared the clinical results of mid-term follow-up of 3 different surgeries in surgical treatment of spinal tuberculosis. This study's purpose is to evaluate the effectiveness of 3 different surgeries for the treatment of lumbar tuberculosis in adult and analyze the mid-term influence of the surgery on quality of life.Between June 2004 and January 2010, a total of 137 adult patients (54 women and 83 men) with lumbar tuberculosis were recruited for this study...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136909/simple-and-selective-determination-of-6-thioguanine-by-using-polyethylenimine-pei-functionalized-carbon-dots
#13
Hongyan Zeng, Li Li, Yaping Ding, Qi Zhuang
In this work, a new selective and simple fluorescence probe based on polyethylenimine(PEI) functionalized carbon dots (PEI-CDs) for fast determination of 6-thioguanine (6-TG) was developed. We successfully prepared the highly fluorescent PEI-CDs by hydrothermal method, and completed the synthesis and modification processes in one step. The fluorescence quantum yield (QY) of the as-synthesized CDs was 38% and higher than that of most previous reports (5-30%). The fluorescence intensity of PEI-CDs decreased obviously with gradually increased concentration of 6-TG...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136847/nitrogen-doped-carbon-nanotubes-decorated-poly-l-cysteine-as-a-novel-ultrasensitive-electrochemical-sensor-for-simultaneous-determination-of-theophylline-and-caffeine
#14
Yingzi Wang, Yaping Ding, Li Li, Ping Hu
In present study, a novel and facile electrochemical sensor based on glassy carbon electrode (GCE) modified with nitrogen-doped carbon nanotubes (N-CNT) decorated with poly (L-Cysteine) (PLCY) were fabricated and applied for the simultaneous voltammetric determination of theophylline (THEO) and caffeine (CAF). The morphology and structure of multilayer film modified on the surface of glassy carbon electrode were investigated successfully by Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and Raman Spectroscopy...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136376/mn-oac-3-promoted-oxidative-csp3-p-bond-formation-through-csp2-csp2-and-p-h-bond-cleavage-access-to-%C3%AE-ketophosphonates
#15
Pan Zhou, Biao Hu, Lingdan Li, Kairui Rao, Jiao Yang, Fuchao Yu
The Mn(OAc)3-promoted oxidative phosphonylation of N,N-dimethylenaminones with H-phosphonates, involving a chemo- and regioselective Csp2-Csp2 bond cleavage and Csp3-P bond formation in one step, provid successfully functionalized β-ketophosphonates under mild reaction conditions. Oxidative Csp3-H/P-H cross-coupling reactions via Csp3-C(C=O) bond cleavage and mechanistic studies are conducted preliminarily, and a possible mechanism is proposed. This novel method proceeds in good to excellent yields, shows operational simplicity, broad substrate scope and large-scale preparation...
November 14, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29134352/accuracy-of-apparent-diffusion-coefficient-in-differentiating-pancreatic-neuroendocrine-tumour-from-intrapancreatic-accessory-spleen
#16
Ankur Pandey, Pallavi Pandey, Mounes Aliyari Ghasabeh, Farnaz Najmi Varzaneh, Pegah Khoshpouri, Nannan Shao, Manijeh Zargham Pour, Daniel Fadaei Fouladi, Ralph H Hruban, Anne Marie O'Broin-Lennon, Ihab R Kamel
OBJECTIVES: To evaluate and compare the accuracy of absolute apparent diffusion coefficient (ADC) and normalised ADC (lesion-to-spleen ADC ratio) in differentiating pancreatic neuroendocrine tumour (NET) from intrapancreatic accessory spleen (IPAS). METHODS: Study included 62 patients with the diagnosis of pancreatic NET (n=51) or IPAS (n=11). Two independent reviewers measured ADC on all lesions and spleen. Receiver operating characteristics (ROC) analysis to differentiate NET from IPAS was performed and compared for absolute and normalised ADC...
November 13, 2017: European Radiology
https://www.readbyqxmd.com/read/29134351/3d-t2-weighted-imaging-to-shorten-multiparametric-prostate-mri-protocols
#17
Stephan H Polanec, Mathias Lazar, Georg J Wengert, Hubert Bickel, Claudio Spick, Martin Susani, Shahrokh Shariat, Paola Clauser, Pascal A T Baltzer
OBJECTIVES: To determine whether 3D acquisitions provide equivalent image quality, lesion delineation quality and PI-RADS v2 performance compared to 2D acquisitions in T2-weighted imaging of the prostate at 3 T. METHODS: This IRB-approved, prospective study included 150 consecutive patients (mean age 63.7 years, 35-84 years; mean PSA 7.2 ng/ml, 0.4-31.1 ng/ml). Two uroradiologists (R1, R2) independently rated image quality and lesion delineation quality using a five-point ordinal scale and assigned a PI-RADS score for 2D and 3D T2-weighted image data sets...
November 13, 2017: European Radiology
https://www.readbyqxmd.com/read/29134156/preoperative-cervical-sagittal-alignment-parameters-and-their-impacts-on-myelopathy-in-patients-with-cervical-spondylotic-myelopathy-a-retrospective-study
#18
Wei Yuan, Yue Zhu, Haitao Zhu, Cui Cui, Lei Pei, Zhuxi Huang
Background: Cervical sagittal alignment plays an important role in the pathogenesis of cervical spondylotic myelopathy (CSM), but there are limited studies on the cervical sagittal parameters in CSM patients and their correlations with myelopathy. The aim of this study is to investigate the correlations among the preoperative cervical sagittal alignment parameters and their correlations with the development of myelopathy in patients with CSM. Methods: We retrospectively collected 212 patients with CSM who underwent surgical interventions...
2017: PeerJ
https://www.readbyqxmd.com/read/29133492/general-practitioner-performed-compression-ultrasonography-for-diagnosis-of-deep-vein-thrombosis-of-the-leg-a-multicenter-prospective-cohort-study
#19
Nicola Mumoli, Josè Vitale, Matteo Giorgi-Pierfranceschi, Silvia Sabatini, Renato Tulino, Marco Cei, Eugenio Bucherini, Carlo Bova, Daniela Mastroiacovo, Alberto Camaiti, Gerardo Palmiero, Luca Puccetti, Francesco Dentali
BACKGROUND: Patients with suspected deep vein thrombosis (DVT) of the lower limb represent a diagnostic dilemma for general practitioners. Compression ultrasonography (US) is universally recognized as the best test of choice. We assessed the diagnostic accuracy of compression US performed by general practitioners given short training in the management of symptomatic proximal DVT. METHODS: From May 2014 to May 2016, we evaluated in a multicenter, prospective cohort study all consecutive outpatients with suspected DVT; bilateral proximal lower limb compression US was performed by general practitioners and by physicians expert in vascular US, each group blinded to the other's findings...
November 2017: Annals of Family Medicine
https://www.readbyqxmd.com/read/29132984/penile-sparing-surgery-for-penile-cancer-a-multicenter-international-retrospective-cohort
#20
Adam Baumgarten, Juan Chipollini, Sylvia Yan, Sarah R Ottenhof, Dominic H Tang, Désirée Draeger, Chris Protzel, Yao Zhu, Ding-Wei Ye, Oliver W Hakenberg, Simon Horenblas, Nicholas A Watkin, Philippe E Spiess
PURPOSE: To evaluate recurrence outcomes of penile sparing surgery (PSS) in the largest multicenter cohort of patients to date. METHODS: We retrospectively identified patients treated with PSS from May 1990 to July 2016 at five tertiary referral institutions. Treatments consisted of circumcision, wide local excision, laser therapy with or without local excision, partial or total glansectomy, and glans resurfacing. Primary endpoint was local recurrence free survival (LRFS) and defined from initial treatment to time of local recurrence and estimated with the Kaplan-Meier method...
November 10, 2017: Journal of Urology
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