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https://www.readbyqxmd.com/read/29454250/disulphide-linkage-to-get-cleaved-or-not-bulk-and-nano-copper-based-sers-of-cystine
#1
Arathi P J, Bhaskar Seemesh, Rajendra Kumar Reddy G, Suresh Kumar P, Ramanathan V
Different nano-structures of noble metals have been the conventional substrates for carrying out Surface Enhanced Raman Spectroscopy (SERS). In this paper we examine electrodeposited copper (Cu) nano-structures on pencil graphite as novel substrate to carry out SERS measurements by considering l-cystine (Cys-Cys) (dimer of the amino acid cysteine) as the probe. The formation of monolayer of the probe molecule on the substrates was confirmed using cyclic voltammetric measurements. Mode of adsorption of Cys-Cys was observed to be different on bulk Cu (taken in the wire form) and nano-structured Cu on pencil graphite...
February 5, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29453730/robotic-assisted-bladder-diverticulectomy-point-of-technique-to-identify-the-diverticulum
#2
Annelisse Ashton, Ricardo Soares, Venkata Ramana Murthy Kusuma, Dimitrios Moschonas, Matthew Perry, Krishna Patil
We aim to outline our technique of performing a robotic-assisted bladder diverticulectomy at our institution and report our surgical outcomes. We report the cases of three robotic-assisted bladder diverticulectomies, performed at the Royal Surrey County Hospital during the period of January 2014 to December 2015. Patient was positioned in low dorsal lithotomy position. A 6Fr double-J stent was prophylactically inserted at the start of the procedure. Foley catheter was placed over guide wire into the diverticulum and balloon inflated on the diverticulum neck...
February 16, 2018: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/29453521/safety-and-feasibility-of-breast-lesion-localization-using-magnetic-seeds-magseed-a-multi-centre-open-label-cohort-study
#3
James R Harvey, Yit Lim, John Murphy, Miles Howe, Julie Morris, Amit Goyal, Anthony J Maxwell
PURPOSE: Wire localization has several disadvantages, notably wire migration and difficulty scheduling the procedure close to surgery. Radioactive seed localization overcomes these disadvantages, but implementation is limited due to radiation safety requirements. Magnetic seeds potentially offer the logistical benefits and transcutaneous detection equivalence of a radioactive seed, with easier implementation. This study was designed to evaluate the feasibility and safety of using magnetic seeds for breast lesion localization...
February 16, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29453335/high-definition-and-low-noise-muography-of-the-sakurajima-volcano-with-gaseous-tracking-detectors
#4
László Oláh, Hiroyuki K M Tanaka, Takao Ohminato, Dezső Varga
Muography is a novel method to highly resolve the internal structure of active volcanoes by taking advantage of the cosmic muon's strong penetration power. In this paper, we present the first high-definition image in the vicinity of craters of an erupting volcano called Sakurajima, Kyushu, Japan. The muography observation system based on the technique of multi-wire proportional chamber (mMOS) has been operated reliably during the data taking period of 157 days. The mMOS measured precisely the flux of muons up to the thickness of 5,000 meter-water-equivalent...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453273/evolution-of-a-holistic-systems-approach-to-planning-and-managing-road-safety-the-victorian-case-study-1970-2015
#5
Carlyn Muir, Ian R Johnston, Eric Howard
BACKGROUND: The Victorian Safe System approach to road safety slowly evolved from a combination of the Swedish Vision Zero philosophy and the Sustainable Safety model developed by the Dutch. The Safe System approach reframes the way in which road safety is viewed and managed. METHODS: This paper presents a case study of the institutional change required to underpin the transformation to a holistic approach to planning and managing road safety in Victoria, Australia...
February 16, 2018: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/29453251/a-novel-adipokine-fam19a5-inhibits-postinjury-neointima-formation-through-sphingosine-1-phosphate-receptor-2
#6
Yingbao Wang, Dixin Chen, Yan Zhang, Pingzhang Wang, Can Zheng, Songyang Zhang, Bing Yu, Lu Zhang, Guizhen Zhao, Baihui Ma, Zeyu Cai, Nan Xie, Shiyang Huang, Ziyi Liu, Xiaoning Mo, Youfei Guan, Xian Wang, Yi Fu, Dalong Ma, Ying Wang, Wei Kong
Background -Obesity plays crucial roles in the development of cardiovascular diseases (CVDs). However, the mechanisms that link obesity and CVDs remain elusive. Compelling evidence indicates that adipokines play an important role in obesity-related CVDs. Here, we found a new adipokine named family with sequence similarity 19, member A5 (FAM19A5), a protein with unknown function that was predicted to be distantly related to the CC-chemokine family. We aimed to test whether adipose-derived FAM19A5 regulates vascular pathology upon injury...
February 16, 2018: Circulation
https://www.readbyqxmd.com/read/29452898/transcriptional-and-epigenetic-regulation-of-innate-like-t-lymphocyte-development
#7
REVIEW
Mihalis Verykokakis, Barbara L Kee
Invariant Natural Killer T (iNKT) cells are a heterogeneous innate T cell population that recognizes lipid antigens. Despite the monospecific nature of their T cell receptor, iNKT cells differentiate into stable sublineages during thymic development, before foreign antigen encounter. How iNKT cell subsets acquire and maintain their functional programs is a central question in innate lymphocyte biology. Global transcriptional and epigenetic profiling of iNKT subsets has provided insights into the internal wiring of these subsets that defines their identity...
February 13, 2018: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29452110/exploring-the-impact-of-house-screening-intervention-on-entomological-indices-and-incidence-of-malaria-in-arba-minch-town-southwest-ethiopia-a-randomized-control-trial
#8
Solomon Kinde Getawen, Temesgen Ashine, Fekadu Massebo, Daniel Woldeyes, Bernt Lindtjørn
House is the major site for malaria infection where most human-vector contact takes place. Hence, improving housing might reduce the risk of malaria infection by limiting house entry of vectors. This study aimed to explore the impact of screening doors and windows with wire meshes on density and entomological inoculation rate (EIR) of malaria vector, and malaria incidence, and assess the acceptability, durability, and cost of the intervention. The susceptibility status of malaria vector was also assessed. A two-arm randomized trial was done in Arba Minch Town, southwest Ethiopia...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29451574/diastereoselective-synthesis-structure-and-reactivity-studies-of-ferrocenyloxazoline-gold-i-and-gold-ii-complexes
#9
Julia Holz, Marta Ayerbe García, Wolfgang Frey, Felix Krupp, René Peters
In the last few decades, gold complexes have demonstrated huge potential for soft Lewis acid catalysis. Despite the intensive research on Au complexes and planar chiral metallacycles, enantiopure ferrocenylgold complexes have - surprisingly - not been reported until the studies presented in this article. Herein, we report the asymmetric synthesis of planar chiral ferrocenyl Au(i) complexes. These dinuclear species form helically chiral ten-membered (NCCCAu) 2 rings stabilized by aurophilic interactions. In supramolecular solid state structures, linear, zigzag or helical Au(i) wires with regular AuAu separations were observed...
February 16, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29450727/metabolic-implications-of-hypoxia-and-pseudohypoxia-in-pheochromocytoma-and-paraganglioma
#10
REVIEW
Katarina Kluckova, Daniel A Tennant
Hypoxia is a critical driver of cancer pathogenesis, directly inducing malignant phenotypes such as epithelial-mesenchymal transition, stem cell-like characteristics and metabolic transformation. However, hypoxia-associated phenotypes are often observed in cancer in the absence of hypoxia, a phenotype known as pseudohypoxia, which is very well documented in specific tumour types, including in paraganglioma/pheochromocytoma (PPGL). Approximately 40% of the PPGL tumours carry a germ line mutation in one of a number of susceptibility genes of which those that are found in succinate dehydrogenase (SDH) or in von Hippel-Lindau (VHL) genes manifest a strong pseudohypoxic phenotype...
February 15, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29450640/incidence-of-perioperative-complications-in-total-hip-and-knee-arthroplasty-in-patients-with-parkinson-disease
#11
Tankamani Sharma, Wolfgang Hönle, René Handschu, Werner Adler, Tarun Goyal, Alexander Schuh
INTRODUCTION: The aim of this study is to evaluate the difference in perioperative complication rate in total hip, bipolar hemiarthroplasties and total knee arthroplasty in patients with Parkinson disease in trauma and elective surgery in our Musculoskeletal Center during a period of 10 years. MATERIAL AND METHOD: Between 2006 and 2016, 45 bipolar hemiarthroplasties in trauma surgery, 15 total knee and 19 total hip arthroplasties in patients with Parkinson's disease were performed...
February 15, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29449442/design-and-rationale-of-the-ripcord-2-trial-does-routine-pressure-wire-assessment-influence-management-strategy-at-coronary-angiography-for-diagnosis-of-chest-pain-a-randomized-controlled-trial-to-compare-routine-pressure-wire-assessment-with-conventional-angiography
#12
REVIEW
Mostafa Elguindy, Rod Stables, Zoe Nicholas, Ian Kemp, Nick Curzen
BACKGROUND: Investigation of anginal chest pain has traditionally involved either assessment of the coronary anatomy by angiography or noninvasive testing for reversible ischemia. Invasive pressure wire assessment at the time of angiography offers information on both anatomy and physiology. Fractional flow reserve-guided percutaneous coronary intervention is associated with lower resource utilization and improved clinical outcome compared with angiographic guidance alone. However, the value of routine fractional flow reserve of all major coronary vessels at the time of diagnostic angiography has not been established in a randomized trial despite persuasive observational data...
February 2018: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/29448787/adaptive-frozen-orbital-treatment-for-the-fragment-molecular-orbital-method-combined-with-density-functional-tight-binding
#13
Yoshio Nishimoto, Dmitri G Fedorov
The exactly analytic gradient is derived and implemented for the fragment molecular orbital (FMO) method combined with density-functional tight-binding (DFTB) using adaptive frozen orbitals. The response contributions which arise from freezing detached molecular orbitals on the border between fragments are computed by solving Z-vector equations. The accuracy of the energy, its gradient, and optimized structures is verified on a set of representative inorganic materials and polypeptides. FMO-DFTB is applied to optimize the structure of a silicon nano-wire, and the results are compared to those of density functional theory and experiment...
February 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29448660/evaluation-of-weldability-for-mag-and-laser-with-galvannealed-steel
#14
Jong-Hee Kim, Han-Sur Bang, Hee-Seon Bang
Lower-arm, one of the components in automotive suspension module, has been fabricated by MAG welding in general which is lap jointed with 2 mm thick galvannealed steel sheet (SGAPH440). This welding process produces some problems such as significantly much spatters and weld defects of porosity in welded joint, which degrades productivity and weldability. Therefore, in order to solve these problems, this study has been tried to apply two types of solid wires with different chemical composition rate of Si and Mn, in MAG welding process...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448149/characterization-of-the-stimulus-waveforms-generated-by-implantable-pulse-generators-for-deep-brain-stimulation
#15
Scott F Lempka, Bryan Howell, Kabilar Gunalan, Andre G Machado, Cameron C McIntyre
OBJECTIVE: To determine the circuit elements required to theoretically describe the stimulus waveforms generated by an implantable pulse generator (IPG) during clinical deep brain stimulation (DBS). METHODS: We experimentally interrogated the Medtronic Activa PC DBS IPG and defined an equivalent circuit model that accurately captured the output of the IPG. We then compared the detailed circuit model of the clinical stimulus waveforms to simplified representations commonly used in computational models of DBS...
January 31, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29446912/cathodic-corrosion-of-a-bulk-wire-to-non-aggregated-functional-nanocrystals-and-nanoalloys
#16
Jicheng Feng, Dong Chen, Ahmad Sediq, Stefan Romeijn, Frans D Tichelaar, Wim Jiskoot, Jun Yang, Marc T M Koper
A key enabling step in leveraging the properties of nanoparticles (NPs) is to explore new, simple, controllable, and scalable nanotechnologies for their syntheses. Among 'wet' methods, cathodic corrosion has been used to synthesize catalytic aggre-gates with some control over their size and preferential faceting. Here, we report on a modification of the cathodic corrosion method for producing a range of non-aggregated nanocrystals (Pt, Pd, Au, Ag, Cu, Rh, Ir, Ni) and nanoalloys (Pt50Au50, Pd50Au50, AgxAu100-x) with potential for scaling up the production rate...
February 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29446261/enhanced-linear-array-photoacoustic-beamforming-using-modified-coherence-factor
#17
Moein Mozaffarzadeh, Yan Yan, Mohammad Mehrmohammadi, Bahador Makkiabadi
Photoacoustic imaging (PAI) is a promising medical imaging modality providing the spatial resolution of ultrasound imaging and the contrast of optical imaging. For linear-array PAI, a beamformer can be used as the reconstruction algorithm. Delay-and-sum (DAS) is the most prevalent beamforming algorithm in PAI. However, using DAS beamformer leads to low-resolution images as well as high sidelobes due to nondesired contribution of off-axis signals. Coherence factor (CF) is a weighting method in which each pixel of the reconstructed image is weighted, based on the spatial spectrum of the aperture, to mainly improve the contrast...
February 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29445973/is-heart-rate-response-a-reliable-marker-of-adenosine-induced-coronary-hyperemia
#18
Bhavik N Modi, Haseeb Rahman, Sara Abou Sherif, Howard Ellis, Kseniia Eruslanova, Amedeo Chiribiri, Divaka Perera
Introduction Growing evidence supports ischemia-guided management of chest pain, with invasive and non-invasive tests reliant upon achieving adenosine-induced coronary hyperemia (defined as increased blood flow to an organ's perfusion bed). In the non-invasive setting, surrogate markers of hyperemia, such as increases in heart rate, are often used, despite not being formally validated. We tested whether heart rate and other non-invasive indices are reliable markers of coronary hyperemia. Methods The first part involved Doppler flow-based validation of the best pressure-wire markers of hyperemia in 53 patients...
February 14, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29445438/vertebral-artery-origin-stent-placement-using-the-dual-lumen-qureshi-jiao-guidecatheter
#19
Adnan I Qureshi, Yabing Wang, Mohammad Rauf Afzal, Liqun Jiao
Objective: We report the first experience with a new dual lumen guide catheter with lumen A with curved tip designed for delivery of stent and angioplasty catheters and lumen B with side exit for coaxial placement of stiff 0.014 inch wire. Methods: We prospectively determined technical success, intended procedure (stent delivery at target lesion and a final residual stenosis <30%) completed without a need for a different catheter, and technical ease, intended procedure completed without ≥3 unsuccessful attempts in patients with symptomatic vertebral artery origin stenosis...
December 2017: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/29444576/-fractures-of-the-fifth-metatarsal-base
#20
K Bušková, D Kuběnová, M Tuček
Fractures of the fifth metatarsal base are among the most common fractures of the foot. They are typically caused by indirect violence during sports activities. This region is also a site where stress fractures occur frequently. Diagnosis is based on the patients medical history, clinical examination and imaging methods. The fundamental imaging method is radiography of the foot in three views. MRI is used primarily for early diagnosis of stress fractures. CT examination is beneficial mainly in complex foot injuries, in order to rule out associated fractures...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
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