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https://www.readbyqxmd.com/read/29346784/surgical-treatment-and-chemotherapy-of-adult-primary-liver-sarcoma-experiences-from-a-single-hospital-in-china
#1
Feng Zhou, Han-Zhang Huang, Meng-Tao Zhou, Shao-Liang Han
BACKGROUND: The aim of this study is to improve the preoperative diagnostic accuracy and treatment results by investigating the clinical features and prognosis of primary liver sarcoma (PLS). METHODS: Clinical data, surgical treatments, adjuvant chemotherapy, and prognosis of 17 PLS patients whose diseases were pathologically confirmed were retrospectively analyzed. RESULTS: The main clinical symptoms included epigastric pain in 9 patients, epigastric distention in 7, and loss of appetite in 4; these symptoms were detected during the postoperative follow-up for gastric carcinoma in 1...
January 18, 2018: Digestive Surgery
https://www.readbyqxmd.com/read/29346441/a-portable-system-for-processing-donated-whole-blood-into-high-quality-components-without-centrifugation
#2
Sean C Gifford, Briony C Strachan, Hui Xia, Eszter Vörös, Kian Torabian, Taylor A Tomasino, Gary D Griffin, Benjamin Lichtiger, Fleur M Aung, Sergey S Shevkoplyas
BACKGROUND: The use of centrifugation-based approaches for processing donated blood into components is routine in the industrialized world, as disparate storage conditions require the rapid separation of 'whole blood' into distinct red blood cell (RBC), platelet, and plasma products. However, the logistical complications and potential cellular damage associated with centrifugation/apheresis manufacturing of blood products are well documented. The objective of this study was to evaluate a proof-of-concept system for whole blood processing, which does not employ electromechanical parts, is easily portable, and can be operated immediately after donation with minimal human labor...
2018: PloS One
https://www.readbyqxmd.com/read/29346429/the-farnesoid-x-receptor-agonist-obeticholic-acid-upregulates-biliary-excretion-of-asymmetric-dimethylarginine-via-mate-1-during-hepatic-ischemia-reperfusion-injury
#3
Andrea Ferrigno, Laura Giuseppina Di Pasqua, Clarissa Berardo, Veronica Siciliano, Vittoria Rizzo, Luciano Adorini, Plinio Richelmi, Mariapia Vairetti
BACKGROUND: We previously showed that increased asymmetric dimethylarginine (ADMA) biliary excretion occurs during hepatic ischemia/reperfusion (I/R), prompting us to study the effects of the farnesoid X receptor (FXR) agonist obeticholic acid (OCA) on bile, serum and tissue levels of ADMA after I/R. MATERIAL AND METHODS: Male Wistar rats were orally administered 10mg/kg/day of OCA or vehicle for 5 days and were subjected to 60 min partial hepatic ischemia or sham-operated...
2018: PloS One
https://www.readbyqxmd.com/read/29346326/lipid-membrane-nanosensors-for-environmental-monitoring-the-art-the-opportunities-and-the-challenges
#4
REVIEW
Georgia-Paraskevi Nikoleli, Dimitrios Nikolelis, Christina G Siontorou, Stephanos Karapetis
The advent of nanotechnology has brought along new materials, techniques, and concepts, readily adaptable to lipid membrane-based biosensing. The transition from micro-sensors to nano-sensors is neither straightforward nor effortless, yet it leads to devices with superior analytical characteristics: ultra-low detectability, small sample volumes, better capabilities for integration, and more available bioelements and processes. Environmental monitoring remains a complicated field dealing with a large variety of pollutants, several decomposition products, or secondary chemicals produced ad hoc in the short- or medium term, many sub-systems affected variously, and many processes largely unknown...
January 18, 2018: Sensors
https://www.readbyqxmd.com/read/29346305/the-sustainable-development-assessment-of-reservoir-resettlement-based-on-a-bp-neural-network
#5
Li Huang, Jian Huang, Wei Wang
Resettlement affects not only the resettlers' production activities and life but also, directly or indirectly, the normal operation of power stations, the sustainable development of the resettlers, and regional social stability. Therefore, a scientific evaluation index system for the sustainable development of reservoir resettlement must be established that fits Chinese national conditions and not only promotes reservoir resettlement research but also improves resettlement practice. This essay builds an evaluation index system for resettlers' sustainable development based on a back-propagation (BP) neural network, which can be adopted in China, taking the resettlement necessitated by step hydropower stations along the Wujiang River cascade as an example...
January 18, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29346297/the-dynamic-performance-of-flexural-ultrasonic-transducers
#6
Andrew Feeney, Lei Kang, George Rowlands, Steve Dixon
Flexural ultrasonic transducers are principally used as proximity sensors and for industrial metrology. Their operation relies on a piezoelectric ceramic to generate a flexing of a metallic membrane, which delivers the ultrasound signal. The performance of flexural ultrasonic transducers has been largely limited to excitation through a short voltage burst signal at a designated mechanical resonance frequency. However, a steady-state amplitude response is not generated instantaneously in a flexural ultrasonic transducer from a drive excitation signal, and differences in the drive characteristics between transmitting and receiving transducers can affect the measured response...
January 18, 2018: Sensors
https://www.readbyqxmd.com/read/29346114/or-net-a-service-oriented-architecture-for-safe-and-dynamic-medical-device-interoperability
#7
Martin Kasparick, Malte Schmitz, Björn Andersen, Max Rockstroh, Stefan Franke, Stefan Schlichting, Frank Golatowski, Dirk Timmermann
Modern surgical departments are characterized by a high degree of automation supporting complex procedures. It recently became apparent that integrated operating rooms can improve the quality of care, simplify clinical workflows, and mitigate equipment-related incidents and human errors. Particularly using computer assistance based on data from integrated surgical devices is a promising opportunity. However, the lack of manufacturer-independent interoperability often prevents the deployment of collaborative assistive systems...
January 18, 2018: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/29346037/development-of-an-ultrasensitive-pcr-assay-for-polycyclic-musk-determination-in-fish
#8
Xiaohan Zhang, Huisheng Zhuang
Polycyclic musks (PCMs) in the aquatic environment and organisms have become an emerging environmental issue because of their potential risk. The most used method for polycyclic musk determination is gas chromatography-mass spectrometry (GC-MS) with different sample extractions, which are somewhat expensive to operate, complex and laborious. In this study, a novel and ultrasensitive real-time polymerase chain reaction (PCR) assay with multiple signal amplification of carboxylic-DNA by gold nanoparticle-polyamidoamine conjugation (Au-PAMAM) was developed for determining polycyclic musks in fish...
January 18, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29346027/postsurgical-outcomes-and-surgical-completeness-of-robotic-thyroid-surgery-a-single-surgeon-s-experience-on-700-cases
#9
Eon-Bin Kim, Jae Won Cho, Yu-Mi Lee, Tae-Yon Sung, Jong Ho Yoon, Ki-Wook Chung, Suck Joon Hong
BACKGROUND: Advanced technology and understanding of robotic surgical system have rendered robotic thyroid surgery more expanding. The aim of this study was to identify the periodic changes in postsurgical outcomes of robotic thyroid surgery performed by a single surgeon. METHODS: We conducted a retrospective review of 700 robotic thyroid surgery cases using gasless trans-axillary approach. RESULTS: All patients underwent successful operations without conversion to open surgery, and were mostly younger than 45 years, female, less-extended thyroid surgery and lymph node dissection, and thyroid cancer...
January 18, 2018: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29346019/independent-attention-mechanisms-control-the-activation-of-tactile-and-visual-working-memory-representations
#10
Tobias Katus, Martin Eimer
Working memory (WM) is limited in capacity, but it is controversial whether these capacity limitations are domain-general or are generated independently within separate modality-specific memory systems. These alternative accounts were tested in bimodal visual/tactile WM tasks. In Experiment 1, participants memorized the locations of simultaneously presented task-relevant visual and tactile stimuli. Visual and tactile WM load was manipulated independently (one, two, or three items per modality), and one modality was unpredictably tested after each trial...
January 18, 2018: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29345899/three-dimensional-graphene-foam-polymer-composite-with-superior-deicing-efficiency-and-strength
#11
Jenniffer Bustillos, Cheng Zhang, Benjamin Boesl, Arvind Agarwal
The adhesion of ice severely compromises the aerodynamic performance of aircrafts operating under critically low-temperature conditions to their surfaces. In this study, highly thermally and electrically conductive graphene foam polymer composite is fabricated. GrF - polydimethylsiloxane (PDMS) deicing composite exhibit superior deicing efficiency of 477 % and electrical conductivities of 500 S∙m-1 with only 0.1 vol. % Graphene foam addition as compared to other nanocarbon - based deicing systems. The three-dimensional interconnected architecture of GrF allows the effective deicing of surfaces by employing low power densities (0...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29345739/exact-mapping-from-many-spin-hamiltonians-to-giant-spin-hamiltonians
#12
Shadan Ghassemi Tabrizi, Alexei V Arbuznikov, Martin Kaupp
Exchange-coupled molecular spin clusters (e.g. single-molecule magnets) are routinely described in terms of a many-spin Hamiltonian (MSH) that considers individual spins, or a giant-spin Hamiltonian (GSH) that treats the system as a collective spin. When isotropic coupling is weak, the mapping MSH → GSH ('spin projection'), becomes non-trivial due to mixing of spin multiplets by anisotropic terms, an effect crucial for generating transverse magnetic anisotropy. Going beyond perturbational spin-projection schemes, based on exact diagonalization and canonical effective Hamiltonian theory, we construct a GSH that exactly matches the energies of the relevant (2S+1) states...
January 18, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29345623/affordable-and-accurate-large-scale-hybrid-functional-calculations-on-gpu-accelerated-supercomputers
#13
Laura E Ratcliff, Augustin Degomme, José A Flores-Livas, Stefan Goedecker, Luigi Genovese
Performing high accuracy hybrid functional calculations for condensed matter systems containing a large number of atoms is at present computationally very demanding or even out of reach if high quality basis sets are used. We present a highly optimized multiple GPU implementation of the exact exchange operator which allows one to perform fast hybrid functional density-functional theory calculations with systematic basis sets without additional approximations for up to a thousand atoms...
January 18, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29345536/uasb-septic-tank-as-an-alternative-for-decentralized-wastewater-treatment-in-mexico
#14
Ángel L Santiago-Díaz, Julisa García-Albortante, Mónica L Salazar-Peláez
The aim of this work was to evaluate the performance of a UASB-septic tank as a decentralized treatment of high strength municipal wastewater, under two different HRTs (48 and 72h). Thus, a lab scale (44.85L) UASB-septic tank constituted by three compartments was operated under HRT 72h and 48h. Removal efficiencies of total COD, BOD5 and suspended solids ranged from 60% to 80% for the first two parameters and from 70% to 90% for the last one. According to the statistical analysis, it was established that decreasing HRT from 72h to 48h did not affect the performance of the UASB-septic tank; therefore, the latter HRT is recommended to be used for operation...
January 18, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29345420/integration-of-gas-enhanced-oil-recovery-in-multiphase-fermentations-for-the-microbial-production-of-fuels-and-chemicals
#15
Susana Pedraza-de la Cuesta, Lore Keijzers, Luuk A M van der Wielen, Maria C Cuellar
In multiphase fermentations where the product forms a second liquid phase or where solvents are added for product extraction, turbulent conditions disperse the oil phase as droplets. Surface-active components (SACs) present in the fermentation broth can stabilize the product droplets thus forming an emulsion. Breaking this emulsion increases process complexity and consequently the production cost. In previous works, it has been proposed to promote demulsification of oil/supernatant emulsions in an off-line batch bubble column operating at low gas flow rate...
January 18, 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29345248/photo-assisted-hysteresis-of-electronic-transport-for-zno-nanowire-transistors
#16
Qianqian Du, Jiandong Ye, Zhonghua Xu, Shunming Zhu, Kun Tang, Shulin Gu, Youdou Zheng
Recently, ZnO nanowire field effect transistors (FETs) have received renewed interest due to their extraordinary low dimensionality and high sensitivity to external chemical environment and illumination conditions. These prominent properties have the promising potential in the nanoscale chemical and photo-sensors. In this article, we have fabricated ZnO nanowire FETs and have found hysteresis behaviors in their transfer characteristics. The mechanism and dynamics of the hysteresis phenomena have been investigated in detail by varying the sweeping rate and range of the gate bias with and without light irradiation...
January 18, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29345003/investigation-of-attributes-which-guide-choice-in-cataract-surgery-services-in-urban-sydney-australia
#17
Celeste Gilbert, Lisa Keay, Anna Palagyi, Vu Quang Do, Peter McCluskey, Andrew White, Nicole Carnt, Fiona Stapleton, Tracey-Lea Laba
BACKGROUND: It is critical to consult patients to develop patient-centred cataract surgery care. We aimed to identify attributes patients consider when making decisions about cataract surgery in an Australian context, where both publicly and privately funded surgery are available. This is the first step in investigating how decisions are made about cataract surgery services. METHODS: This observational qualitative study was undertaken in two public hospitals and one private practice in Sydney, Australia...
January 17, 2018: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29344955/development-of-an-advanced-two-dimensional-microdosimetric-detector-based-on-thick-gas-electron-multipliers
#18
Sahar Darvish-Molla, William V Prestwich, Soo Hyun Byun
PURPOSE: The THick Gas Electron Multiplier (THGEM) based tissue-equivalent proportional counter (TEPC) has been proven to be useful for microdosimetry due to its flexibility in varying the gaseous sensitive volume and achieving high multiplication gain. Aiming at measuring the spatial distribution of radiation dose for mixed neutron-gamma fields, an advanced two-dimensional (2-D) THGEM TEPC was designed and constructed at McMaster University which will enable us to overcome the operational limitation of the classical TEPCs, particularly for high dose rate fields...
January 18, 2018: Medical Physics
https://www.readbyqxmd.com/read/29344747/healthcare-based-on-cloud-electrocardiogram-system-a-medical-center-experience-in-middle-taiwan
#19
Xiu-Shu Zhang, Fang-Yie Leu, Ching-Wen Yang, Lai-Shiun Lai
Electrocardiogram (ECG) as one of the best methods to measure irregular heartbeats is a dispensable method for doctor to diagnose Acute Myocardial Infarction (AMI) patients. Most medical centers in Taiwan implement the reduction of Door to Balloon (D2B) time, which is defined as the time interval starting when an Acute-Myocardial-Infarction patient arrives at the Emergency Department, and ending when a catheter guide wire crosses the culprit lesion as the acute-myocardial-infarction treatment on the patient in the cardiac catheterization room...
January 17, 2018: Journal of Medical Systems
https://www.readbyqxmd.com/read/29344699/feasibility-study-of-mr-guided-transgluteal-targeted-in-bore-biopsy-for-suspicious-lesions-of-the-prostate-at-3-tesla-using-a-freehand-approach
#20
Frank Fischbach, Lukas Wien, Sascha Krueger, Bernhard Schnackenburg, Daniel Baumunk, Björn Friebe, Martin Schostak, Jens Ricke, Katharina Fischbach
OBJECTIVE: The aim of our study was (1) to establish an in-bore targeted biopsy of suspicious prostate lesions, avoiding bowel penetration using a transgluteal approach and (2) to assess operator setup, patient comfort and safety aspects in the clinical setting for freehand real-time MR-guidance established for percutaneous procedures in an open MR-scanner. MATERIAL AND METHODS: 30 patients with suspect prostate lesions were biopsied in a cylindrical 3T-MRI system using a transgluteal approach in freehand technique...
January 17, 2018: European Radiology
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