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Air way

Ahsan Zil-E-Ali, Syeda Naqvi, Mariam Tariq
Necrotizing fasciitis (NF) is a rare but life-threatening medical and surgical emergency. It is characterized by necrosis of the soft tissue leaving the overlying tissue unaffected, which delays the diagnosis and treatment. Delay in recognition of the severity of necrotizing fasciitis might lead to serious morbidity and mortality. Diagnosis of NF relies on strong clinical judgment, predictable by severe pain, erythema, and a presence of air under the skin, but all of them are not always present. Management of NF is prompt surgical intervention and antimicrobial therapy...
July 8, 2017: Curēus
Zhengmao Lu, Kyle L Wilke, Daniel John Preston, Ikuya Kinefuchi, Elizabeth F Chang-Davidson, Evelyn N Wang
Evaporation is a ubiquitous phenomenon found in nature and widely used in industry. Yet fundamental understanding of interfacial transport during evaporation remains limited to date owing to the difficulty of characterizing the heat and mass transfer at the interface, especially at high heat fluxes ( > 100 W/cm(2)). In this work, we elucidated evaporation into an air ambient with an ultra-thin (≈ 200 nm thick) nanoporous (≈ 130 nm pore diameter) membrane. With our evaporator design, we accurately monitored the temperature of the liquid-vapor interface, reduced the thermal-fluidic transport resistance and mitigated the clogging risk associated with contamination...
September 19, 2017: Nano Letters
James Greenhalgh
This article reconsiders the way that the British state extended its control of the home during the Second World War, using the implementation of air raid precautions and the blackout as a lens through which to view the state's developing attitudes to domestic space. Presented here is not the familiar story of pitch-dark, dangerous streets or altered cityscapes of fear and destruction; instead, by examining personal testimony the article inverts traditional treatments of the blackout to look at the interior of dwellings, demonstrating how the realities of total warfare impinged upon the psychological elements that constituted the home...
June 1, 2017: 20 Century British History
Shunichi Fukuzumi, Yong-Min Lee, Wonwoo Nam
Seawater is the most abundant resource on our planet and fuel production from seawater has the remarkable merit that it would not compete with growing demands of pure water. This review focuses on the production of fuels from seawater and their direct use in fuel cells. Electrolysis of seawater under appropriate conditions affords hydrogen and dioxygen with 100% Faradaic efficiency without oxidation of chloride ion. Photoelectrocatalytic production of hydrogen from seawater provides promising way to produce hydrogen with low cost and high efficiency...
September 15, 2017: ChemSusChem
Pierre Gueriau, Jean-Pascal Rueff, Sylvain Bernard, Josiane Albert Kaddissy, Sarah Goler, Christoph J Sahle, Dimosthenis Sokaras, Roy A Wogelius, Philip L Manning, Uwe Bergmann, Loïc Bertrand
Carbon compounds are ubiquitous and occur in a diversity of chemical forms in many systems including ancient and historic materials ranging from cultural heritage to paleontology. Determining their speciation cannot only provide unique information on their origin, but may also elucidate degradation processes. Synchrotron-based X-ray absorption near-edge structure (XANES) spectroscopy at the carbon K-edge (280-350 eV) is a very powerful method to probe carbon speciation. However, the short penetration depth of soft X-rays imposes stringent constraints on sample type, preparation and analytical environment...
September 13, 2017: Analytical Chemistry
Seyyed Mohammad Ali Sajadi, Alireza Majidi, Fahimeh Abdollahimajd, Fatemeh Jalali
INTRODUCTION: History taking and physical examination help clinicians identify the patient's problem and effectively treat it. This study aimed to evaluate the descriptors of dyspnea in patients presenting to emergency department (ED) with asthma, congestive heart failure (CHF), and chronic obstructive pulmonary disease (COPD). METHOD: This cross-sectional study was conducted on all patients presenting to ED with chief complaint of dyspnea, during 2 years. The patients were asked to describe their dyspnea by choosing three items from the valid and reliable questionnaire or articulating their sensation...
2017: Emergency (Tehran, Iran)
R Flores-Campos, R H Estrada-Ruiz, E J Velarde-Sánchez
Recycling printed circuit boards using green technology is increasingly important due to the metals these contain and the environmental care that must be taken when separating the different materials. Inverse flotation is a process that can be considered a Green Technology, which separates metallic from non-metallic fractions. The degree of separation depends on how much material is adhered to air bubbles. The contact angle measurement allows to determine, in an easy way, whether the flotation process will occur or not and thus establish a material as hydrophobic or not...
September 6, 2017: Waste Management
A Aires, J F Cadenas, R Guantes, A L Cortajarena
A key challenge in the treatment of cancer with nanomedicine is to engineer and select nanoparticle formulations that lead to the desired selectivity between tumorigenic and non-tumorigenic cells. To this aim, novel designed nanomaterials, deep biochemical understanding of the mechanisms of interaction between nanomaterials and cells, and computational models are emerging as very useful tools to guide the design of efficient and selective nanotherapies. This works shows, using a combination of detailed experimental approaches and simulations, that the specific targeting of cancer cells in comparison to non-tumorigenic cells can be achieved through the custom design of multivalent nanoparticles...
September 21, 2017: Nanoscale
Yani Zhao, Marek Cieplak
We study the behavior of five proteins at the air-water and oil-water interfaces by all-atom molecular dynamics. The proteins are found to get distorted when pinned to the interface. This behavior is consistent with the phenomenological way of introducing the interfaces in a coarse-grained model through a force that depends on the hydropathy indices of the residues. Proteins couple to the oil-water interface stronger than to the air-water one. They diffuse slower at the oil-water interface but do not depin from it, whereas depinning events are observed at the other interface...
September 20, 2017: Physical Chemistry Chemical Physics: PCCP
Gemma Craig, Charlotte Wadey
A 3-month evaluation was undertaken at the Kent Oncology Centre's chemotherapy day unit (CDU) to trial an air-tight sealing disposal system for cytotoxic waste management. Research has identified the potential risk to staff who handle waste products that are hazardous to health. Staff safety was a driving force behind a trial of a new way of working. This article provides an overview of the evaluation of the Pactosafe system in one clinical area, examining reviews by oncology healthcare workers, the practicalities in the clinical setting, training, cost effectiveness and the environmental benefits...
September 7, 2017: British Journal of Nursing: BJN
Matthias Michael Krejca, Cornell Wüstner, Werner A Goedel
We report on a novel method to synthesize particles -called by us Saturn particles - having two hydrophobic caps that oppose each other and are separated from each other by a hydro-philic belt that encircles the particle. Mixtures of these particles with water and air, without the usage of low molar mass surfactants, easily form Pickering foams and Pickering mem-branes that are stable for days. These Pickering membranes are composed of a thin film of water into which the particles are embedded in such a way that the belt is surrounded by the water and the caps protrude out of the water into the air at the top and bottom side of the water film...
September 7, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Xavier Mariette
Professor Xavier Mariette, MD, PhD, has served as the Head of the Rheumatology Department of Bicêtre Hospital, Paris-Sud University since 1999, a role he took following 10 years of practice of clinical immunology. Professor Mariette has initiated a number of clinical research studies on biotherapies in autoimmune diseases. He is the head of the French RATIO (Research Axed on Tolerance of Biotherapy) observatory, collecting specific rare serious adverse events in patients treated with anti-TNF. He initiated the French AIR (Autoimmunity and Rituximab) and ORA (Orencia and Rheumatoid arthritis) registries of patients with autoimmune diseases treated with rituximab and abatacept...
September 2017: Immunotherapy
Fengjuan Chen, Yajun Wang, Shijun Zhao, Wei Jiang, Congde Huo
Catalytic amounts of TBHP (15 mol%) promoted tribromomethylation of activated alkenes has been developed. This method provided a metal-free aerobic way to construct tribromomethylated 2-oxindoles from the reaction of readily available N-arylacrylamides with CBr4via a proposed tandem radical cyclization process. Air is used as an efficient terminal oxidant in this transformation. The formation of 1,1-dibromoolefin derivatives was also realized at higher temperature under neat conditions.
September 20, 2017: Organic & Biomolecular Chemistry
Marco Gelsomino, Theo Tsouras, Ian Millar, Andrew Fock
INTRODUCTION: When a standard water-seal pleural drain unit (PDU) is used under hyperbaric conditions there are scenarios where excessive negative intrapleural pressure (IPP) and/or fluid reflux can be induced, risking significant morbidity. We developed and tested a pleural vacuum relief (PVR) device which automatically manages these risks, whilst allowing more rapid hyperbaric pressure change rates. METHODS: The custom-made PVR device consists of a one-way pressure relief valve connected in line with a sterile micro filter selected for its specific flow capacity...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
Shuai Liu, Hua Zhou, Hongxia Wang, Weidong Yang, Hao Shao, Sida Fu, Yan Zhao, Deqi Liu, Zhihua Feng, Tong Lin
A novel method for preparing durable superamphiphobic fabrics is reported, which involves preapplying a solution consisting of perfluoroalkyl acrylate, epoxide-containing silane, and silica nanoparticles onto fabric and subsequent argon-plasma treatment. The coated fabrics show superphobic to both water and oil fluids (surface tension >21.5 mN m(-1) ). The coating is durable to withstand repeated laundries and multicycles of abrasion without apparently altering the superamphiphobicity. The coating is also very stable in boiling water, strong acid, and base, but has little effect on the fabric handle and air permeability...
September 1, 2017: Small
Xue Liu, Jing Du, Yang Shao, Shao-Fan Zhao, Ke-Fu Yao
Metallic core-shell nanostructures have inspired prominent research interests due to their better performances in catalytic, optical, electric, and magnetic applications as well as the less cost of noble metal than monometallic nanostructures, but limited by the complicated and expensive synthesis approaches. Development of one-pot and inexpensive method for metallic core-shell nanostructures' synthesis is therefore of great significance. A novel Cu network supported nanoporous Ag-Cu alloy with an Ag shell and an Ag-Cu core was successfully synthesized by one-pot chemical dealloying of Zr-Cu-Ag-Al-O amorphous/crystalline composite, which provides a new way to prepare metallic core-shell nanostructures by a simple method...
August 31, 2017: Scientific Reports
Li Shi, Qionghua Zhou, Yinghe Zhao, Yixin Ouyang, Chongyi Ling, Qiang Li, Jinlan Wang
Ultrathin indium selenide (InSe), as a newly emerging two-dimensional material with high carrier mobility and a broad absorption spectrum, has been the focus of current research. However, the long-term environmental instability of atomically thin InSe seriously limits its practical applications. To develop an effective strategy to protect InSe, it is crucial to reveal the degradation mechanism at the atomic level. By employing density functional theory and ab initio molecular dynamics simulations, we provide an in-depth understanding of the oxidation mechanism of InSe...
August 30, 2017: Journal of Physical Chemistry Letters
Viviana Morales, Jose E Sánchez
The aim of this study was to evaluate a self-heating pasteurization technique in preparing substrates for mushroom production. Seven species were used: Agrocybe aegerita, Auricularia fuscosuccinea, Pleurotus djamor, P. eryngii, P. ostreatus, Lentinula edodes, and Ganoderma lucidum. They were cultivated on grass, corncob, wood shavings, and a mixture thereof. The self-heating technique allowed for pasteurization of 3 of the substrates (grass, corncob, and the mixture). The preheating chamber comprised a drawer placed under the pasteurization crate...
2017: International Journal of Medicinal Mushrooms
Lijian Zuo, Hexia Guo, Dane W deQuilettes, Sarthak Jariwala, Nicholas De Marco, Shiqi Dong, Ryan DeBlock, David S Ginger, Bruce Dunn, Mingkui Wang, Yang Yang
The solution processing of polycrystalline perovskite films introduces trap states that can adversely affect their optoelectronic properties. Motivated by the use of small-molecule surfactants to improve the optoelectronic performance of perovskites, we demonstrate the use of polymers with coordinating groups to improve the performance of solution-processed semiconductor films. The use of these polymer modifiers results in a marked change in the electronic properties of the films, as measured by both carrier dynamics and overall device performance...
August 2017: Science Advances
Dorrit H Lowsen, George A Conway
BACKGROUND: Ambient (outdoor) air pollution has been implicated as a major cause of acute cardiovascular and pulmonary illnesses and increased risk for acute and chronic effects after chronic exposures, including mortality and morbidity. In 2008, due to persistent health concerns about its workforce and their dependents, the US Mission in China began monitoring air quality at the US Embassy in Beijing. Subsequently, monitoring stations were also established at US consulates at Shanghai (2011), Guangzhou (2011), Chengdu (2012), and Shenyang (2013)...
December 2016: Journal of Environmental Protection
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