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https://www.readbyqxmd.com/read/28535059/room-temperature-inp-inasp-quantum-discs-in-nanowire-infrared-photodetectors
#1
Mohammad Karimi, Vishal Jain, Magnus Heurlin, Ali Nowzari, Laiq Hussain, David Lindgren, Jan Eric Stehr, Irina A Buyanova, Anders Gustafsson, Lars Samuelson, Magnus T Borgström, Håkan Jan Pettersson
The possibility to engineer nanowire heterostructures with large bandgap variations is particularly interesting for technologically important broadband photodetector applications. Here we report on a combined study of design, fabrication and optoelectronic properties of infrared photodetectors comprising 4 million n+-i-n+ InP nanowires periodically ordered in arrays. The nanowires were grown by metal-organic vapor phase epitaxy on InP substrates, with either a single or 20 InAsP quantum discs embedded in the i-segment...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28530627/-laparoscopic-treatment-of-retroperitoneal-fibrosis
#2
Carlos Hernández Fernández, David Subirá Rios, Mercedes Moralejo Gárate, Elena Rodríguez Fernández, Jorge Caño Velasco, Felipe Herranz Amo
Retroperitoneal fibrosis is a disease that may condition a severe involvement of various organs, mainly upper urinary tract, even causing renal insufficiency. It was first described by Albarran in 1905 and it is also known as Ormonds disease. The correct diagnosis includes, in many cases, the performance of one or more tests: CT scan, MRI, renal scan, etc. It is often necessary the insertion of double J catheters on percutaneous nephrostomy tubes with the aim to preserve renal function. Initial treatment is medical, based on corticoids, and , less frequent, immunosuppressive or chemotherapy drugs...
May 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28527804/nutritive-value-and-fermentation-characteristics-of-alfalfa-mixed-grass-forage-wrapped-with-minimal-stretch-film-layers-and-stored-for-different-lengths-of-time
#3
W K Coblentz, R K Ogden, M S Akins, E A Chow
A key aspect of managing baled silages is to quickly achieve and then rigorously maintain anaerobic conditions within the silage mass. The concept of inserting an O2-limiting barrier (OB) into plastic commercial silage wraps has been evaluated previously, yielding mixed or inconclusive results. Our objective for this study was to maximize the challenge to a commercial polyethylene bale wrap, or the identical wrap containing an OB, by using minimal plastic (4 layers), and then extending storage periods as long as 357 d...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28526345/facile-fabrication-of-3d-porous-hybrid-sphere-by-co-immobilization-of-multi-enzyme-directly-from-cell-lysates-as-an-efficient-and-recyclable-biocatalyst-for-asymmetric-reduction-with-coenzyme-regeneration-in-situ
#4
MinganYu, Duqiang Liu, Lili Sun, Jing Li, Qian Chen, Lijun Pan, Jingchuan Shang, Shurong Zhang, Wei Li
Ni(2+)-agarose bead-wrapped multi-enzyme/inorganic hybrid sphere composed of the immobilized enzymes as organic component and NaH2PO4 and NaCl as inorganic component was developed by co-immobilizing extracellular His-tagged 3-quinuclidinone reductases and glucose dehydrogenase without pre-purification. The resulting biocatalysts has 3D porous architectures as confirmed by SEM and FESEM, and it enabled the continuous biotransformation of 3-quinuclidone to (R)-3-quinuclidinol with cofactor regeneration in situ...
May 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28524042/-preparation-and-application-of-cooling-bag-for-heat-stroke-in-wild-field
#5
Hailing Li, Qing Lu, Hongping Wang, Lujia Li
Cooling bag for heat stroke in wild field was invented in order to fulfill rapid cooling for heat stroke in field environment. The cooling bag is composed of the hood, the body cover (which is made up of the anterior portion, the linking, and the posterior portion), the fixed straps, the handles. The length is 200 cm, the regulative width is 60-70 cm, the folding volume is 26 cm × 20 cm × 9 cm, and the weight is 1.4 kg. There are a number of pockets for the cold sources in the hood and the body cover. Fixed straps are set in the upper, middle and lower of the bag...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28520985/warning-statements-and-safety-practices-among-manufacturers-and-distributors-of-electronic-cigarette-liquids-in-the-united-states
#6
Pebbles Fagan, Pallav Pokhrel, Thaddeus A Herzog, Mignonne C Guy, Kari-Lyn K Sakuma, Dennis R Trinidad, Kevin Cassel, Dorothy Jorgensen, Tania Lynch, Jamie Q Felicitas-Perkins, Sherilyn Palafox, Faith Hamamura, Sarah Maloney, Kaylah Degree, Kymberle Sterling, Eric Moolchan, Mark S Clanton, Thomas Eissenberg
Introduction.: Prior to the Food and Drug Administration's (FDA) regulation of electronic cigarettes and warning statements related to nicotine addiction, there was no critical examination of manufacturer/distributor voluntary practices that could potentially inform FDA actions aimed to protect consumers. This study examined the content of warning statements and safety characteristics of electronic cigarette liquid bottles using a national sample. Methods.: Research staff randomly selected four electronic cigarette liquid manufacturers/distributors from four U...
May 18, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28520399/an-immunofluorescence-imaging-strategy-for-evaluation-of-the-accessibility-of-dna-5-hydroxymethylcytosine-in-chromatins
#7
Shangwei Zhong, Zhe Li, Ting Jiang, Xiangjun Li, Hailin Wang
DNA 5-hydroxymethylcytosine (5hmC) is an important epigenetic modification found in various mammalian cells. Immunofluorescence imaging analysis essentially provides visual pictures to the abundance and distribution of DNA 5hmC in single cells. However, nuclear DNA is usually wrapped around nucleosomes and packaged into chromatins, and further bound with many functional proteins. These physiologically relevant events would generate barriers to the anti-5hmC antibody to selectively recognize 5hmC in DNA. By taking advantage of these naturally generated barriers, here we present a strategy to evaluate the accessibility of DNA 5hmC in chromatins in situ...
May 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28516759/reduced-graphene-oxide-wrapped-nickel-rich-cathode-materials-for-lithium-ion-batteries
#8
Jae-Hyun Shim, Young-Min Kim, Miji Park, Jongsik Kim, Sanghun Lee
The encapsulation of Ni-rich cathode materials (LiNi0.6Co0.2Mn0.2O2) for lithium ion batteries in reduced graphene oxide (rGO) sheets is introduced to improve electrochemical performances. Using (3-aminopropyl)triethoxysilane, the active materials are completely wrapped with several rGO layers of ~2 nm thickness. By virtue of the great electrical conductivity of graphene, the rGO-coated cathode materials exhibit much enhanced electrochemical performances of cycling property and rate capability. In addition, it is shown that the structural degradation of the active materials, which is from the rhombohedral layered structure (R-3 m) to the spinel (Fd-3 m) or rock-salt phase (Fm-3 m), is significantly reduced as well as delayed due to the protection of the active materials in the rGO layers from direct contact with electrolytes and the consequent suppression of side reactions...
May 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28508028/data-in-support-of-poisoning-related-mortalities-from-southern-himachal-pradesh
#9
Shivkant Sharma, Kuldeep Kumar, Saurabh Bhargava, V S Jamwal, Arun Sharma, Rajvinder Singh
Poisoning has always been pointed as one of the leading causes of human death throughout the world. Despite the best efforts made by many research institutes, the worldwide true figure on mortalities with poisoning could never be achieved due to many reasons. One of the main reasons is the unavailability of complete database from the rural and catchment areas of the world where these types of incidents are usual. People can be made aware about this problem by presenting data articles on regular basis, therefore to mark a resource document these data should be regularly up-dated...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28507971/lethal-necrotizing-fasciitis-triggered-by-plaster-case-report-and-review-of-literature
#10
Mohit J Jain, Kinjal Mavani
INTRODUCTION: Plasters have been frequently associated with known complications such as infection, and compartment syndrome or deep vein thrombosis. However, life-threatening complication of necrotizing fasciitis (NF) has not been frequently attributed to plaster. CASE REPORT: We had a case of a 62-year male developing a lethal NF triggered by a below knee plaster for undisplaced fracture medial malleolus after twisting injury. He had no history suggestive of diabetes, renal impairment, and predisposing allergic factors or any comorbidity...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28506801/old-drug-new-wrapping-a-possible-comeback-for-chloramphenicol
#11
Sveinung G Ingebrigtsen, Alena Didriksen, Mona Johannessen, Nataša Škalko-Basnet, Ann Mari Holsæter
The antimicrobial drug chloramphenicol (CAM) exhibits activity against resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA). However, its use has been limited due to its toxicity. As the threat of antibiotic resistance continues to grow, a promising approach might be to increase the use of historical antimicrobial agents that demonstrate clinical efficacy, but are hampered by toxicity. We therefore aimed to prepare a liposome-in-hydrogel system for dermal delivery of CAM. Chitosan (CS) was used as the hydrogel vehicle due to its antimicrobial activity and excellent biocompatibility...
May 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28506176/neurolysis-with-amniotic-membrane-nerve-wrapping-for-treatment-of-secondary-wartenberg-syndrome-a-preliminary-report
#12
Michael P Gaspar, Patrick M Kane, Michael M Vosbikian, Constantinos Ketonis, Mark S Rekant
BACKGROUND: Entrapment of the superficial sensory branch of the radial nerve (SRN) commonly results in debilitating pain of the dorsoradial wrist. Symptom relief following SRN neurolysis is often incomplete or temporary due to recurrent perineural scarring. METHODS: We performed a retrospective review with prospective follow-up of all patients with SRN neuropathy who were treated with neurolysis and nerve wrapping using an amnion-based allograft adhesion barrier over a one-year interval...
June 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28505563/ultrasensitive-magnetic-field-assisted-surface-plasmon-resonance-immunoassay-for-human-cardiac-troponin-i
#13
Qiong Wu, Ying Sun, Di Zhang, Shuo Li, Yue Zhang, Pinyi Ma, Yang Yu, Xinghua Wang, Daqian Song
An ultrasensitive surface plasmon resonance (SPR) immunoassay was developed for the specific detection of human cardiac troponin I (cTnI), a principle diagnostic marker for myocardial damage. The thin gold film evaporated on a glass slate, which was employed as the SPR sensing film, was modified by hollow gold nanoparticles (HGNPs) and polydopamine (PDA) sequentially, and then was immobilized with antibodies for specific recognition of target analyte. Electronic coupling of the surface plasmon waves originating from the HGNPs and the gold film leads to the remarkable amplification of SPR response...
May 12, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28505413/protein-displacement-by-herpes-helicase-primase-and-the-key-role-of-ul42-during-helicase-coupled-dna-synthesis-by-the-herpes-polymerase
#14
Sarah Michelle Dickerson, Robert D Kuchta
The herpes helicase-primase (UL5-UL8-UL52) very inefficiently unwinds double stranded DNA. To better understand the mechanistic consequences of this inefficiency, we investigated protein displacement activity by UL5-UL8-UL52, as well as the impact of coupling DNA synthesis by the herpes polymerase with helicase activity. While the helicase can displace proteins bound to the lagging strand template, bound proteins significantly impede helicase activity. Remarkably, UL5-UL8-UL52, an extremely inefficient helicase, disrupts the exceptionally tight interaction between streptavidin and biotin on the lagging strand template...
May 15, 2017: Biochemistry
https://www.readbyqxmd.com/read/28504809/effect-of-lymphedema-treatment-for-management-of-acute-pilon-fractures
#15
John M Whatley, James A Lalonde, Craig C Greene, Kevin B Riche, Danielle M Tatum
Pilon fractures are high-energy injuries that often result in considerable edema and compromise of the soft tissue envelope of the ankle. These injuries are typically staged with an external fixator until the soft tissue is amenable for definitive fixation. This study was conducted to determine the effects of lymphedema treatment for the management of pilon fractures. Patients who underwent open reduction and internal fixation of pilon fractures between 2007 and 2014 at the authors' level II trauma center were identified by Current Procedural Terminology codes indicative of placement of an external fixator (20690) and open reduction and internal fixation of a pilon fracture (27826, 27827, or 27828)...
May 15, 2017: Orthopedics
https://www.readbyqxmd.com/read/28503573/collagen-external-scaffolds-mitigate-intimal-hyperplasia-and-improve-remodeling-of-vein-grafts-in-a-rabbit-arteriovenous-graft-model
#16
Haiming Li, Shoudong Chai, Longsheng Dai, Chengxiong Gu
Objectives. The aim of this study was to test the effects of collagen external scaffold (CES) in intimal hyperplasia of vein grafts and explore its underlying mechanisms. Methods. Thirty-six New Zealand white rabbits were randomized into no-graft group, graft group, and CES group. The rabbit arteriovenous graft model was established. In CES group, the vein graft was wrapped around with CES. The hemodynamic parameters of vein grafts were measured intraoperatively and 4 weeks after operation by ultrasonic examination...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28502887/open-surgical-treatment-of-secondary-aorto-esophageal-and-aortobronchial-fistula-after-thoracic-endovascular-aortic-repair-and-esophagocoloplasty-in-a-second-procedure
#17
Milos Sladojevic, Milos Bjelovic, Nikola Ilic, Perica Mutavdzic, Igor Koncar, Marko Dragas, Lazar Davidovic
INTRODUCTION: Aorto-esophageal (AEF) and aortobronchial fistula (ABF) after TEVAR are rare complications with catastrophic consequences without treatment. In this case report we presented a patient with AEF and ABF after TEVAR successfully treated with endograft explantation and replaced by Dacron graft followed by esophagectomy and left principal bronchus repairing. CASE REPORT: We report a patient with AEF and ABF after TEVAR who was evaluated due to dysphagia and chest pain followed by hematemesis and hemoptysis...
May 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28502080/the-contemporary-role-of-ureterolysis-in-retroperitoneal-fibrosis-rpf-treatment-of-last-resort-or-first-intent-an-analysis-of-50-cases
#18
Tim O'Brien, Archie Fernando
OBJECTIVE: To determine the outcomes of open ureterolysis in a contemporary cohort of patients presenting with ureteric obstruction secondary to retroperitoneal fibrosis (RPF). PATIENTS AND METHODS: Prospective analysis of 50 patients undergoing open ureterolysis and omental wrap between January 2012 and January 2016 in a single centre managed by a multi-disciplinary RPF team. Minimum follow up of 1 year. Indications were: nephrostomy-dependent drainage (n=5); stent failure as evidenced by persistent hydronephrosis (n=20); severe stent symptoms (n=22); and patient choice/pre-emptive (n=3)...
May 14, 2017: BJU International
https://www.readbyqxmd.com/read/28501912/idiopathic-retroperitoneal-fibrosis-clinical-features-and-long-term-renal-function-outcome
#19
Mohamed H Zahran, Yasser Osman, Mohamed A Soltan, Ahmed Elhussein Abolazm, Mostafa K Ghazy, Ahmed M Harraz, Ahmed A Shokeir, Hassan Abol-Enein, Bedeir Ali-El-Dein
PURPOSE: To evaluate the long-term renal function outcome of management of retroperitoneal fibrosis (RPF)-induced ureteral obstruction. METHODS: Thirty-six patients with idiopathic RPF-induced ureteral obstruction were classified according to the management type into two groups, group A; managed by indwelling JJ stent and group B managed by ureterolysis and omental wrapping (UOR). The primary outcome was to define the long-term outcome of management on RF. It was evaluated by changes in serum creatinine and estimated GFR (eGFR) using Modification of Diet in Renal Disease equation where 20% changes in eGFR is considered significant...
May 13, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28500662/application-of-a-novel-bioreactor-for-in-vivo-engineering-of-pancreas-tissue
#20
Hashemi Javad, Pasalar Parvin, Soleimani Masoud, Khorramirouz Reza, Fendereski Kiarad, Enderami Seyed Ehsan, Kajbafzadeh Abdol-Mohammad
Type 1 diabetes is characterized by autoimmune destruction of pancreatic cells. Organ transplantation is an acceptable treatment for native organ failure. However, it is associated with several problems due to a number of reasons, such as the lack of appropriate donors and immunosuppression. In our present study, a novel model is presented for in vivo recellularization of acellular pancreas by implanting between the host pancreas and the adjacent omental flap. In this study, the pancreases were harvested and cannulated via the common bile duct and then, the scaffolds were acellularized by a detergent-based protocol...
May 13, 2017: Journal of Cellular Physiology
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