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https://www.readbyqxmd.com/read/28531089/au-nanoparticle-decorated-silicon-pyramids-for-plasmon-enhanced-hot-electron-near-infrared-photodetection
#1
Zhiyang Qi, Yusheng Zhai, Long Wen, Qilong Wang, Qin Chen, Sami Iqbal, Guangdian Chen, Ji Xu, Yan Tu
Heterojunction between metal and silicon (Si) is an attractive route to extend the response of Si-based photodiodes into the near-infrared (NIR) region, so-called Schottky barrier diodes. Photons absorbed into a metallic nanostructure excite the surface plasmon resonances (SPRs), which can be damped non-radiatively through the creation of hot electrons. Unfortunately, quantum efficiency of hot electron detectors remains low due to low optical absorption and poor electron injection efficiency. In this study, we propose an efficient and low-cost plasmonic hot electron NIR photodetector based on Au nanoparticle (Au NP)-decorated Si pyramid Schottky junction...
May 22, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28527382/global-burden-of-road-traffic-accidents-in-older-adults-a-systematic-review-and-meta-regression-analysis
#2
Boon Hong Ang, Won Sun Chen, Shaun Wen Huey Lee
PURPOSE OF THE STUDY: This study aims to estimate the burden of road traffic accidents and death among older adults. DESIGN AND METHODS: A systematic literature review was conducted on 10 electronic databases for articles describing Road Traffic Accident(RTA) mortality in older adults until September 2016. A random-effects meta-regression analyses was conducted to estimate the pooled rates of road traffic accidents and death. RESULTS: A total 5018 studies were identified and 23 studies were included...
May 13, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28521721/the-importance-of-military-conscripts-for-surveillance-of-human-immunodeficiency-virus-infection-and-risk-behavior-in-thailand
#3
Aladdin Shadyab, Kenrad Nelson, Ram Rangsin
BACKGROUND: The epidemic of human immunodeficiency virus (HIV) infection in Thailand began in 1988 among injection drug users (IDUs) in Bangkok. It soon spread to other populations, especially female sex workers (FSWs) and men attending STD clinics. Routine serologic surveillance for HIV began among military conscripts in 1991. The HIV seroprevalence data from military conscripts provided national surveillance data, since the entire population of 21 year old men were conscripted for 2 years' service in the military by a random process during which 10% of men were selected...
May 17, 2017: Current HIV Research
https://www.readbyqxmd.com/read/28515293/virus-like-vesicles-of-kaposi-s-sarcoma-associated-herpesvirus-activate-lytic-replication-through-triggering-differentiation-signaling
#4
Danyang Gong, Xinghong Dai, Yuchen Xiao, Yushen Du, Travis J Chapa, Jeffrey R Johnson, Xinmin Li, Nevan J Krogan, Hongyu Deng, Ting-Ting Wu, Ren Sun
Virus-like vesicles (VLVs) are membrane enclosed vesicles that resemble native enveloped viruses in organization, but lack viral capsid and genome. During the productive infection of tumor associated gamma-herpesviruses, both virions and VLVs are produced and released into the extracellular space. However, studies of gamma-herpesvirus associated VLVs have been largely restricted by the technical difficulty of separating VLVs from mature virions. Here, we report a strategy of using a Kaposi's sarcoma-associated herpesvirus (KSHV) mutant defective in small capsid protein, unable to produce mature virions, to selectively isolate VLVs...
May 17, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28507612/pattern-of-injuries-in-fatal-motorcycle-accidents-seen-in-lagos-state-university-teaching-hospital-an-autopsy-based-study
#5
Francis Faduyile, Festus Emiogun, Sunday Soyemi, Olugbenga Oyewole, Uche Okeke, Oluseun Williams
BACKGROUND: Deaths from motorcycle accident injuries have remained a major public health issue in Nigeria over the years. AIM: The study is to determine the age and gender distribution of the victims and to identify the cause of death and the anatomical pattern of injuries seen. METHODOLOGY: This is a 5-year autopsy-based study of all motorcycle accident deaths seen in Lagos State University Teaching Hospital between December 2009 and November 2014...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28504848/association-of-traumatic-head%C3%A2-injuries-and-maxillofacial-fractures-a-retrospective-study
#6
Maher M Abosadegh, Shaifulizan Ab Rahman, Norkhafizah Saddki
The association of traumatic head injury (THI) with maxillofacial fractures (MFF) is a major health concern worldwide. In spite of the close anatomical proximity of maxillofacial bones to the cranium, the association of THI with MFF is controversial. The aim of this study was to assess the association between traumatic head injuries (THI) and maxillofacial fractures (MFF). Other factors associated with THI in patients with MFF were also investigated MATERIALS AND METHODS: A hospital-based retrospective study was conducted at the OMFS Unit, Hospital USM, Kelantan, Malaysia...
May 15, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28503327/the-characteristics-of-traumatic-spinal-cord-injuries-at-a-referral-hospital-in-northern-tanzania
#7
Sakina Mehboob Rashid, Mubashir Alavi Jusabani, Faiton Ndesanjo Mandari, Marieke Cornelia Johanna Dekker
STUDY DESIGN: Retrospective study. OBJECTIVES: To describe the epidemiology of traumatic spinal cord injury (TSCI) in Northern Tanzania. SETTING: Main referral hospital for Northern Tanzania. METHODS: A retrospective review of 125 TSCI cases admitted to Kilimanjaro Christian Medical Centre (KCMC) over a period of 5 years. RESULTS: We included 125 patients in the sample size, with a male majority of 107 (85...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28493266/prevalence-determinants-and-impacts-of-khat-chewing-among-professional-drivers-in-southwestern-saudi-arabia
#8
Nabil J Awadalla, Hassan A Suwaydi
The objective of this study was to assess the prevalence and determinants of khat chewing, and explore its social, economic and work impacts and examine its relation with road traffic accidents (RTA) among professional drivers in Jazan region, Saudi Arabia. A cross-sectional study was conducted on 215 drivers recruited from transport stations in Jazan region by random cluster sampling. An interview questionnaire was utilized for data collection, and 47.4% of drivers were currently khat chewers. Using a logistic regression, the independent predictors of khat chewing were being a citizen of Saudi Arabia, divorced or widowed, working for less than 4 hours/day, and a non-seatbelt user...
May 1, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/28492427/quantitative-optical-coherence-tomography-analysis-of-retinal-degenerative-changes-in-diabetic-macular-edema-and-neovascular-age-related-macular-degeneration
#9
Ernest V Boiko, Dmitrii S Maltsev
PURPOSE: To investigate the relationship of the pre-anti-vascular endothelial growth factor (VEGF) retinal tissue area (RTA) and optical density (ODRT) of the retinal optical slice portion located in the central subfield, and their ratio (RTA/ODRT), in the presence of diabetic macular edema or of inraretinal cystic fluid in neovascular age-related macular degeneration, to central retinal thickness and best-corrected visual acuity after anti-VEGF treatment with ME resolution. METHODS: The optical coherence tomography images and medical records of 33 patients (41 eyes) with neovascular age-related macular degeneration, 15 (21 eyes) with diabetic macular edema and 9 healthy individuals (15 eyes) were retrospectively analyzed...
May 10, 2017: Retina
https://www.readbyqxmd.com/read/28490592/epstein-barr-virus-rta-mediated-accumulation-of-dna-methylation-interferes-with-ctcf-binding-in-both-host-and-viral-genomes
#10
Yen-Ju Chen, Yu-Lian Chen, Yao Chang, Chung-Chun Wu, Ying-Chieh Ko, Sai Wah Tsao, Jen-Yang Chen, Su-Fang Lin
Rta, an Epstein-Barr virus (EBV) immediate-early protein, reactivates viral lytic replication that is closely associated with tumorigenesis. In previous studies, we demonstrated that in epithelial cells Rta efficiently induced cellular senescence, which is an irreversible G1 arrest likely to provide a favorable environment for productive replications of EBV and Kaposi's sarcoma-associated herpesvirus (KSHV). To restrict progression of the cell cycle, Rta simultaneously upregulates CDK inhibitors and downregulates MYC, CCND1 and JUN, among others...
May 10, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28482648/enhanced-photoelectrochemical-behavior-of-h-tio2-nanorods-hydrogenated-by-controlled-and-local-rapid-thermal-annealing
#11
Xiaodan Wang, Sonia Estradé, Yuanjing Lin, Feng Yu, Lluis Lopez-Conesa, Hao Zhou, Sanjeev Kumar Gurram, Francesca Peiró, Zhiyong Fan, Hao Shen, Lothar Schaefer, Guenter Braeuer, Andreas Waag
Recently, colored H-doped TiO2 (H-TiO2) has demonstrated enhanced photoelectrochemical (PEC) performance due to its unique crystalline core-disordered shell nanostructures and consequent enhanced conduction behaviors between the core-shell homo-interfaces. Although various hydrogenation approaches to obtain H-TiO2 have been developed, such as high temperature hydrogen furnace tube annealing, high pressure hydrogen annealing, hydrogen-plasma assisted reaction, aluminum reduction and electrochemical reduction etc...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28480093/the-public-health-threat-of-road-traffic-accidents-in-nigeria-a-call-to-action
#12
REVIEW
Noc Onyemaechi, U R Ofoma
Public health experts worldwide concede that there is a global epidemic of road traffic accidents (RTA). Globally, RTA is the leading cause of injury-related deaths. In Nigeria, injuries and deaths resulting from RTA are on the rise and are Nigeria's third-leading cause of overall deaths, the leading cause of trauma-related deaths and the most common cause of disability. Do RTA constitute a public health problem in Nigeria? If so, is there a pragmatic approach to combat this problem? A systematic literature search using the advanced features of various databases such as PubMed, Scopus, Embase, Google, and directory of open access journals was carried out using the key words " RTA, public health problem, government response, Nigeria...
July 2016: Annals of Medical and Health Sciences Research
https://www.readbyqxmd.com/read/28473805/reactivation-and-lytic-replication-of-kaposi-s-sarcoma-associated-herpesvirus-an-update
#13
REVIEW
Kawalpreet K Aneja, Yan Yuan
The life cycle of Kaposi's sarcoma-associated herpesvirus (KSHV) consists of two phases, latent and lytic. The virus establishes latency as a strategy for avoiding host immune surveillance and fusing symbiotically with the host for lifetime persistent infection. However, latency can be disrupted and KSHV is reactivated for entry into the lytic replication. Viral lytic replication is crucial for efficient dissemination from its long-term reservoir to the sites of disease and for the spread of the virus to new hosts...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28451671/defect-promoted-photo-electrochemical-performance-enhancement-of-orange-luminescent-zno-nanorod-arrays
#14
Jan Kegel, Fathima Laffir, Ian M Povey, Martyn E Pemble
Intentionally defect-rich zinc oxide (ZnO) nanorod-arrays were grown from solution by carefully adjusting the concentration ratio of the growth-precursors used followed by various post-deposition thermal treatments. Post-deposition rapid thermal annealing (RTA) at moderate temperatures (350 °C-550 °C) and in various atmospheres was applied to vary the defect composition of the grown nanorod-arrays. It is demonstrated that, intense, defect-related orange emission occurs solely upon RTA around 450 °C and is essentially independent of the atmosphere used...
May 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28439168/ocular-injuries-in-patients-of-zygomatico-complex-zmc-fractures
#15
Altaf Hussain Malik, Aijaz A Shah, Irshad Ahmad, Babar Ai Shah
PURPOSE: Mid face injuries commonly destroy the integrity of the orbital skeleton, and are frequently complicated by injury to the eye, ranging between 2.7 and 90.6 % as reported in literature. The eye injuries range from simple subconjunctival haemorrhage to globe rupture. The paper aims to study the types of ocular injuries in patients with ZMC fractures. PATIENTS AND METHODS: A study of 67 patients, who had sustained facial trauma sufficient to lead to a facial bone fracture, was undertaken in the department of Oral and Maxillofacial Surgery, Govt Dental College, Srinagar from 2008 to 2014 and the patients received a comprehensive examination by an ophthalmologist within 1 week of injury...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28437915/rapid-thermal-annealing-treated-spin-on-doped-antireflective-radial-junction-si-nanopillar-solar-cell
#16
Bikash Dev Choudhury, Srinivasan Anand
Radial junction nanopillar Si solar cells are interesting for cost effective efficiency improvement. Here, we address a convenient top-down fabrication of Si nanopillar solar cells using spin-on doping and rapid thermal annealing (RTA) for conformal PN junction formation. Broadband suppressed reflection as low as an average of 5% in the 300-1100 nm wavelength range and un-optimized cell efficiency of 7.3% are achieved. The solar cell performance can be improved by optimization of spin-on-doping and suitable surface passivation...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28398250/differences-in-ribosome-binding-and-sarcin-ricin-loop-depurination-by-shiga-and-ricin-holotoxins
#17
Xiao-Ping Li, Nilgun E Tumer
Both ricin and Shiga holotoxins display no ribosomal activity in their native forms and need to be activated to inhibit translation in a cell-free translation inhibition assay. This is because the ribosome binding site of the ricin A chain (RTA) is blocked by the B subunit in ricin holotoxin. However, it is not clear why Shiga toxin 1 (Stx1) or Shiga toxin 2 (Stx2) holotoxin is not active in a cell-free system. Here, we compare the ribosome binding and depurination activity of Stx1 and Stx2 holotoxins with the A1 subunits of Stx1 and Stx2 using either the ribosome or a 10-mer RNA mimic of the sarcin/ricin loop as substrates...
April 11, 2017: Toxins
https://www.readbyqxmd.com/read/28366437/mechanical-histological-and-functional-properties-remain-inferior-in-conservatively-treated-achilles-tendons-in-rodents-long-term-evaluation
#18
Benjamin R Freedman, George W Fryhofer, Nabeel S Salka, Harina A Raja, Cody D Hillin, Courtney A Nuss, Daniel C Farber, Louis J Soslowsky
Conservative treatment (non-operative) of Achilles tendon ruptures is suggested to produce equivalent capacity for return to function; however, long term results and the role of return to activity (RTA) for this treatment paradigm remain unclear. Therefore, the objective of this study was to evaluate the long term response of conservatively treated Achilles tendons in rodents with varied RTA. Sprague Dawley rats (n=32) received unilateral blunt transection of the Achilles tendon followed by randomization into groups that returned to activity after 1-week (RTA1) or 3-weeks (RTA3) of limb casting in plantarflexion, before being euthanized at 16-weeks post-injury...
May 3, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28340529/effects-of-rapid-thermal-annealing-and-different-oxidants-on-the-properties-of-laxalyo-nanolaminate-films-deposited-by-atomic-layer-deposition
#19
Chenxi Fei, Hongxia Liu, Xing Wang, Lu Zhao, Dongdong Zhao, Xingyao Feng
A comparative study of different sequences of two metal precursors [trimethylaluminum (TMA) and Tris(isopropylcyclopentadienyl) lanthanum (La((i)PrCp)3)] for atomic layer deposition (ALD) lanthanum aluminum oxide (LaxAlyO) films is carried out. The percentage compositions of C and N impurity of LaxAlyO films were investigated using in situ X-ray photoelectron spectroscopy (XPS). The effects of different oxidants on the physical and chemical properties and electrical characteristics of LaxAlyO films are studied before and after annealing...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28315152/bilateral-robotic-transabdominal-adrenalectomy-in-a-patient-with-intestinal-malrotation
#20
Zuliang Feng, Carmen C Solórzano
Bilateral adrenalectomy is the preferred surgical approach for patients with failed treatments for pituitary-based Cushing's syndrome. Intestinal malrotation (IM) is a rare congenital anatomic variant that rarely affects adults. The abnormal abdominal anatomy is concerning to surgeons planning elective procedures in such patients. Here, we describe a bilateral robotic transabdominal adrenalectomy (RTA) in a patient with IM. A 29-year-old female presented with refractory pituitary-based Cushing's syndrome and was found to have IM on preoperative CT scan...
March 17, 2017: Journal of Robotic Surgery
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