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https://www.readbyqxmd.com/read/28454481/aln-surface-passivation-of-gan-based-high-electron-mobility-transistors-by-plasma-enhanced-atomic-layer-deposition
#1
An-Jye Tzou, Kuo-Hsiung Chu, I-Feng Lin, Erik Østreng, Yung-Sheng Fang, Xiao-Peng Wu, Bo-Wei Wu, Chang-Hong Shen, Jia-Ming Shieh, Wen-Kuan Yeh, Chun-Yen Chang, Hao-Chung Kuo
We report a low current collapse GaN-based high electron mobility transistor (HEMT) with an excellent thermal stability at 150 °C. The AlN was grown by N2-based plasma enhanced atomic layer deposition (PEALD) and shown a refractive index of 1.94 at 633 nm of wavelength. Prior to deposit AlN on III-nitrides, the H2/NH3 plasma pre-treatment led to remove the native gallium oxide. The X-ray photoelectron spectroscopy (XPS) spectroscopy confirmed that the native oxide can be effectively decomposed by hydrogen plasma...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454398/immunological-effects-of-vaccines-combined-with-granulocyte-colony-stimulating-factor-on-a-murine-wehi-3-leukemia-model
#2
Jinqiu Chen, Miling Zhang, Fuling Zhou, Jin Wang, Ben Niu, Wanggang Zhang
Granulocyte colony-stimulating factor (G-CSF) mobilizes regulatory T cells (Tregs) from bone marrow into the peripheral blood, by reducing the expression of stromal cell-derived factor-1α (SDF-1α). However, G-CSF has rarely been studied in acute myeloid leukemia (AML) immunotherapy. The present study performed a Transwell migration assay in vitro to determine the contribution of SDF-1α to the migration of leukemia cells, and the effects of G-CSF were evaluated. The effects of G-CSF on SDF-1α and Tregs in the AML microenvironment were examined, by employing a WEHI-3-grafted BALB/c mouse AML model (AML-M4)...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454202/-new-developments-in-compression-treatment
#3
Stefanie Reich-Schupke, Kerstin Protz, Joachim Dissemond, Eberhard Rabe
Patients with peripheral arterial occlusive disease who show an ankle arterial pressure of minimum 60 mmHg can be decongested by use of special padded bandages. Afterwards, medical compression stockings (class 1) with high strength and less elasticity are recommended. Mobile patients seem to benefit from progressive compression therapy with highest pressure above the calf. Compression after uncomplicated interventions of varicose veins or spider veins tends to be modified to a short and excentric compression in patients without risk factors...
May 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28454058/identification-and-characterization-of-process-related-substances-and-degradation-products-in-apremilast-process-optimization-and-degradation-pathway-elucidation
#4
Yuting Lu, Xiaoyue Shen, Taijun Hang, Min Song
This study aims at investigating the separation, identification and characterization of related substances in apremilast by LC-MS hyphenated techniques, as well as the synthesis optimization and the degradation pathways elucidation. Forced degradation studies were conducted under the ICH prescribed stress conditions. The chromatographic separation was achieved on XBridge C18 column (4.6mm×150mm, 3.5μm) using a mobile phase consisting of water adjusted to pH 3.0 with formic acid as solvent A and acetonitrile as solvent B in linear gradient elution program...
April 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28454040/the-role-of-dissimilatory-arsenate-reducing-bacteria-in-the-biogeochemical-cycle-of-arsenic-based-on-the-physiological-and-functional-analysis-of-aeromonas-sp-o23a
#5
Witold Uhrynowski, Klaudia Debiec, Aleksandra Sklodowska, Lukasz Drewniak
Dissimilatory arsenate reducing bacteria (DARB) are known to contribute to the mobilization of arsenic and other elements from minerals. Despite this, metabolic capabilities of only a few DARB strains have been thoroughly investigated so far, and the influence of these bacteria on the bioavailability of arsenic in the environment is still a topic for discussion. In this study, Aeromonas sp. O23A, one of the dominant DARB strains found in the Zloty Stok mine (SW Poland), was subjected to a detailed physiological and functional analysis aimed to identify the actual environmental impact of this strain...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28454038/long-term-variations-measurement-of-electromagnetic-field-exposures-in-alcal%C3%A3-de-henares-spain
#6
R Sánchez-Montero, C Alén-Cordero, P L López-Espí, J M Rigelsford, F Aguilera-Benavente, J Alpuente-Hermosilla
Electromagnetic radiowave exposure is a major concern in most countries due to possible adverse health effects. Over the last 10years, many technological changes (digital television, mobile technologies, wireless networks…) have led to variations in the electromagnetic field (EMF) levels. A large number of studies devoted to the analysis of EMF levels with personal dosimeters or computer models of the exposure of mobile stations have been conducted. However, the study of the exposure values, taking into account all the existing sources, and their evolution in a wide area, using measurements, has rarely been performed...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28454021/reactive-mineral-removal-relative-to-soil-organic-matter-heterogeneity-and-implications-for-organic-contaminant-sorption
#7
Fangfang Li, Bo Pan, Ni Liang, Zhaofeng Chang, Yuwei Zhou, Lin Wang, Hao Li, Baoshan Xing
Soil organic matter (SOM) is generally treated as a static compartment of soil in pollutant fate studies. However, SOM might be altered or fractionated in soil systems, and the details of SOM property/composition changes when coupled with contaminant behavior are unknown. In this study, a mild acid treatment was adopted to remove reactive minerals and partially remove SOM components. After acid treatment, biomarker signatures showed that lignin-derived phenols were released and black carbon (as suggested by benzene-polycarboxylic acids) and lipids were enriched...
April 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28453991/advocacy-coalitions-and-protected-areas-creation-process-case-study-in-the-amazon
#8
Sandra Nicolle, Maya Leroy
Protected areas are the cornerstones of conservation policies worldwide. However, only few researches are led to analyse the way they emerge, except for criticising top-down governmental choices. Yet, the historical approach and strategic analysis of public policy building over the long term allows a better understanding of the stakes of action capacity of these policies. We therefore mobilize the advocacy coalition framework to show that protected areas creation is always due to coalitions of actors who belong to different professional fields and act at different scales but nevertheless share common stakes...
April 25, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28453972/exposure-to-ambient-pm2-5-associated-with-overall-and-domain-specific-disability-among-adults-in-six-low-and-middle-income-countries
#9
Hualiang Lin, Yanfei Guo, Yang Zheng, Xing Zhao, Zheng Cao, Steven E Rigdon, Hong Xian, Xing Li, Tao Liu, Jianpeng Xiao, Weilin Zeng, Nancy L Weaver, ZhengminMin Qian, Wenjun Ma, Fan Wu
BACKGROUND: Exposure to particulate matter pollution is associated with various cardiopulmonary diseases, which are closely related with disability. The direct relationship between air pollution and disability, however, has not been fully explored. METHODS: We used data from 45,625 participants in the Study on global AGEing and adult health in six low- and middle-income countries. The 12-item version of the World Health Organization Disability Assessment Schedule (WHODAS 2...
April 25, 2017: Environment International
https://www.readbyqxmd.com/read/28453965/adsorption-behavior-and-mechanism-of-different-arsenic-species-on-mesoporous-mnfe2o4-magnetic-nanoparticles
#10
Qingsong Hu, Yuling Liu, Xueyuan Gu, Yaping Zhao
Arsenic pollution poses severe threat to human health, therefore dealing with the problem of arsenic contamination in water bodies is extremely important. The adsorption behaviors of different arsenic species, such as arsenate (As(V)), p-arsanilic acid (p-ASA), roxarsone (ROX), dimethylarsenate (DMA) from water using mesoporous bimetal oxide magnetic manganese ferrite nanoparticles (MnFe2O4) have been detailedly investigated. The adsorbent was synthesized via a facile co-precipitation approach and recovered conveniently owing to its strong magnetic properties...
April 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28453963/rare-earth-elements-and-their-release-dynamics-under-pre-definite-redox-conditions-in-a-floodplain-soil
#11
Julia Mihajlovic, Hans-Joachim Stärk, Jörg Rinklebe
For the first time, the impact of pre-definite redox conditions on the release dynamics of rare earth elements (REEs) and the determining factors pH, iron (Fe), manganese (Mn), aluminum (Al), dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and sulfate (SO4(2-)) in a floodplain soil was elucidated using an advanced, highly sophisticated automatic biogeochemical microcosm apparatus. The redox potential (EH) ranged between +82 and + 498 mV during the experiment. The systematic increase of EH caused a decreasing pH from 6...
April 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28453886/remote-diagnosis-of-traumatic-dental-injuries-using-digital-photographs-captured-via-a-mobile-phone
#12
Rogério de Almeida Geraldino, Liliana Vicente Melo de Lucas Rezende, Cibele Queiroz da-Silva, Júlio César Franco Almeida
BACKGROUND: Intra-oral photographs has been aided diagnosis of several pathologies in teledentistry. Mobile phone cameras may produce high quality photographs, presenting itself as a viable tool for remote diagnosis of traumatic dental injuries. Aim To evaluate the levels of inter-examiner agreement in cases of traumatic dental injuries when comparing diagnoses conducted in person and remotely. MATERIAL AND METHODS: The sample included 40 patients with 73 traumatized teeth, and a total of 90 diagnoses, who had presented to two dental clinics, one private and the other public, in Brazil's Federal District...
April 28, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28453593/-benign-intraperitoneal-metastatic-leiomyomatosis-a-case-report
#13
Paz García, Juan Ignacio Errázuriz, Carlos Fernández, Eugenio Arteaga
Benign intraperitoneal metastatic leiomyomatosis is a rare benign disease that is observed when a leiomyoma is present in the peritoneal surface. Women who have undergone hysterectomy for leiomyomas are most commonly affected. Patients are usually asymptomatic at presentation, being frequently an incidental finding in imaging studies. Ultrasound and CT play an important role in the diagnosis. The lesions are histologically identical to their uterine counterparts. There are different theories about the pathogenesis of the disease, including peritoneal seeding after laparoscopic hysterectomy...
February 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28453592/-cutaneous-myiasis-due-to-cochliomyia-hominivorax-associated-with-seborrheic-dermatitis
#14
Perla Calderón H, Camilo Rojas E, Werner Apt B, Douglas Castillo O
Myiasis is an infestation of tissues and organs of humans and animals by Diptera larvae (flies, horseflies, mosquitoes). They are located at different body sites, and classified clinically as cutaneous, visceral and cavitary. We report a 26-year-old woman with a history of seborrheic dermatitis and recent trip to Brazil. She presented with a seven days history of suppurating wounds in the parieto-occipital area of the scalp. At physical examination we found three ulcers of approximately 1.5 cm each, with multiple mobile larvae inside...
February 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28453461/serpine2-a-poor-biomarker-of-endometrial-cancer-promotes-the-proliferation-and-mobility-of-ec-cells
#15
Yuan Shen, Xiaoyu Wang, Jianping Xu, Lin Lu
The SerpinE2 pathway is evolutionarily conserved and plays an important role in tumorigenesis. SerpinE2 (a small ubiquitin-related modifier), like ubiquitin, conjugates SerpinE2 proteins onto lysine residues of target proteins. SerpinE2 over-expression has been found in several tumors. Here, we detected the level of SerpinE2 in 72 samples of EC tissue using immunohistochemistry to assess the role of SerpinE2 in EC prognosis. Meanwhile, we knocked down SerpinE2 by siRNA in the HTB-111 and Ishikawa EC cell lines and analyzed the viability and mobility change using an MTT assay, an annexin V/PI apoptosis assay, a wound scratch test and a transwell assay...
April 21, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28453446/the-effects-of-neural-mobilization-on-cervical-radiculopathy-patients-pain-disability-rom-and-deep-flexor-endurance
#16
Dong-Gyu Kim, Sin Ho Chung, Ho Bal Jung
BACKGROUND: Cervical radiculopathy (CR) is a disease of the cervical spine and a space-occupying lesion that occurs because of pathological problems with cervical nerve roots. Nerve root injury to produce functional disability. OBJECTIVE: The purpose of this study was to examine the effects of neural mobilization with manual cervical traction (NMCT) compared with manual cervical traction (MCT) on pain, functional disability, muscle endurance, and range of motion (ROM) in individuals with CR patients...
April 14, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28453295/postinjury-exercise-and-platelet-rich-plasma-therapies-improve-skeletal-muscle-healing-in-rats-but-are-not-synergistic-when-combined
#17
Paola Contreras-Muñoz, Joan Ramon Torrella, Xavier Serres, David Rizo-Roca, Meritxell De la Varga, Ginés Viscor, Vicente Martínez-Ibáñez, José Luis Peiró, Tero A H Järvinen, Gil Rodas, Mario Marotta
BACKGROUND: Skeletal muscle injuries are the most common sports-related injury and a major concern in sports medicine. The effect of platelet-rich plasma (PRP) injections on muscle healing is still poorly understood, and current data are inconclusive. PURPOSE: To evaluate the effects of an ultrasound-guided intramuscular PRP injection, administered 24 hours after injury, and/or posttraumatic daily exercise training for 2 weeks on skeletal muscle healing in a recently established rat model of skeletal muscle injury that highly mimics the muscle trauma seen in human athletes...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28453259/direct-in-situ-mass-specific-absorption-spectra-of-biomass-burning-particles-generated-from-smoldering-hard-and-softwoods
#18
James G Radney, Rian You, Michael R Zachariah, Christopher D Zangmeister
Particles from smoldering biomass burning (BB) represent a major source of carbonaceous aerosol in the terrestrial atmosphere. In this study, mass specific absorption spectra of laboratory-generated smoldering wood particles (SWP) from 3 hardwood and 3 softwood species were measured in-situ. Absorption data spanning from λ = 500 nm to 840 nm were collected using a photoacoustic spectrometer coupled to a supercontinuum laser with a tunable wavelength and bandwidth filter. SWP were size- (electrical mobility) and mass-selected prior to optical characterization allowing data to be reported as mass-specific absorption cross sections (MAC)...
April 28, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28453251/influence-of-manure-application-on-the-environmental-resistome-under-finnish-agricultural-practice-with-restricted-antibiotic-use
#19
Johanna Muurinen, Robert D Stedtfeld, Antti Karkman, Katariina Pärnänen, James M Tiedje, Marko P J Virta
The co-occurrence of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) in farm environments can potentially foster the development of antibiotic resistant pathogens. We studied the resistome of Finnish dairy and swine farms where use of antibiotics is limited to treating bacterial infections and manure is only applied April to September. The resistome of manure, soil and tile drainage water from ditch was investigated from the beginning of the growing season until forage harvest. The relative ARG and MGE abundance was measured using a qPCR array with 363 primer pairs...
April 28, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28449546/pmosfets-featuring-ald-w-filling-metal-using-sih4-and-b2h6-precursors-in-22-nm-node-cmos-technology
#20
Guilei Wang, Jun Luo, Jinbiao Liu, Tao Yang, Yefeng Xu, Junfeng Li, Huaxiang Yin, Jiang Yan, Huilong Zhu, Chao Zhao, Tianchun Ye, Henry H Radamson
In this paper, pMOSFETs featuring atomic layer deposition (ALD) tungsten (W) using SiH4 and B2H6 precursors in 22 nm node CMOS technology were investigated. It is found that, in terms of threshold voltage, driving capability, carrier mobility, and the control of short-channel effects, the performance of devices featuring ALD W using SiH4 is superior to that of devices featuring ALD W using B2H6. This disparity in device performance results from different metal gate-induced strain from ALD W using SiH4 and B2H6 precursors, i...
December 2017: Nanoscale Research Letters
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