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https://www.readbyqxmd.com/read/29222927/diaheliotropic-leaf-movement-enhances-leaf-photosynthetic-capacity-and-photosynthetic-use-efficiency-of-light-and-photosynthetic-nitrogen-via-optimizing-nitrogen-partitioning-among-photosynthetic-components-in-cotton-gossypium-hirsutum-l
#1
Hesheng Yao, Yali Zhang, Xiaoping Yi, Xiangjuan Zhang, Dayong Fan, Wah Soon Chow, Wangfeng Zhang
Phototropic leaf movement of plants is an effective mechanism for adapting to light conditions. Light is the major driver of plant photosynthesis. Leaf N is also an important limiting factor on leaf photosynthetic potential. Cotton (Gossypium hirsutum L.) exhibits diaheliotropic leaf movement. Here, we compared the long-term photosynthetic acclimation of fixed leaves (restrained) and free leaves (allowed free movement) in cotton. The fixed leaves and free leaves were used for the determinations of photosynthetically active radiation, leaf chlorophyll concentration, leaf N content and leaf gas exchange...
December 9, 2017: Plant Biology
https://www.readbyqxmd.com/read/29221008/efficient-strategy-to-increase-higher-order-inter-modal-stability-of-a-step-index-multimode-fiber
#2
Aamir Gulistan, Souvik Ghosh, S Ramachandran, B M A Rahman
We demonstrate a novel approach to enhance the mode stability through increased effective index difference (Δneff) between the higher-order modes (LP18, LP09 and LP19) of a multimode fiber. Fibers with large diameters have bigger effective mode areas (Aeff) and can be useful for high power lasers and amplifiers. However, a large mode area (LMA) results in an increased number of modes that can be more susceptible to mode coupling. The modal effective index difference (Δneff) strongly correlates with mode stability and this increases as the modal order (m) increases...
November 27, 2017: Optics Express
https://www.readbyqxmd.com/read/29217860/greater-palatine-nerve-neuropraxia-after-laryngeal-mask-insertion-a-rare-occurrence
#3
Jyoti Garg, Geoffrey Haw Chieh Liew, Shariq Ali Khan
With the more frequent use of the laryngeal mask airway (LMA) over endotracheal tubes for general anaesthesia, various cranial nerve injuries have been reported recently. We report a rare occurrence of greater palatine nerve (GPN) palsy subsequent to the use of LMA Supreme™ in a young female scheduled for hand surgery. Although the exact mechanism of a nerve injury is still a matter of further research, we postulate pressure neuropraxia of GPN as a causative factor in the development of numbness over the hard palate after the removal of LMA in the post operative period...
November 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29217156/air-q%C3%A2-versus-lma-fastrach%C3%A2-for-fiberoptic-guided-intubation-a-randomized-cross-over-manikin-trial
#4
M Portas, M I Canal, M Barrio, M Alonso, P Cabrerizo, M López-Gil, M Zaballos
INTRODUCTION: Airway management is still a major cause of anesthesia-associated morbidity and mortality. Supraglottic devices are recommended in difficult airway management guidelines. The aim of this study was to compare the performance of the Air-Q® and the LMA Fastrach™ for fiberoptic guided tracheal intubation. METHODS: Thirty-three anesthesia trainees participated in this randomized crossover study. Time to insert the dedicated airways (insertion of the airway into the manikin and delivery of two breaths), time to tracheal intubation (fiberoptic-guided tracheal intubation), time to remove the dedicated airway (removal of the Air-Q®/LMA Fastrach™ over the tracheal tube) and the opinion of the ease of use of the anesthesia trainees were measured...
December 4, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/29174079/laryngeal-mask-airway-for-surfactant-administration-in-neonates-a-randomized-controlled-trial
#5
Kari D Roberts, Roland Brown, Andrea L Lampland, Tina A Leone, Kyle D Rudser, Neil N Finer, Wade D Rich, T Allen Merritt, Adam J Czynski, Julie M Kessel, Sajani M Tipnis, Erin C Stepka, Mark C Mammel
OBJECTIVE: To determine if preterm infants with moderate respiratory distress syndrome on continuous positive airway pressure (CPAP) who received surfactant via a laryngeal mask airway (LMA) would have a decreased rate of intubation and mechanical ventilation compared with those on CPAP who did not receive surfactant. STUDY DESIGN: In this prospective, multicenter, randomized controlled trial, 103 premature infants 280/7-356/7 weeks gestation, ≥1250 g and ≤36 hours old on CPAP requiring fraction of inspired oxygen 0...
November 21, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29165767/influence-of-laryngeal-mask-airway-lma-insertion-anesthesia-on-cognitive-function-after-microsurgery-in-pediatric-neurosurgery
#6
C-H Fan, B Peng, F-C Zhang
OBJECTIVE: To compare the influence of laryngeal mask airway (LMA) insertion anesthesia and endotracheal intubation on cognitive function during anesthesia for neurosurgery microscopy. PATIENTS AND METHODS: A total of 76 pediatric patients who underwent neurosurgery microscopy were selected. They were randomly divided in the LMA insertion group with 35 cases and the endotracheal intubation group with 41 cases. Before the operation, the two groups were injected with 0...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29152934/a-prospective-randomised-trial-of-the-ambu-auragain-laryngeal-mask-versus-the-lma-protector-airway-in-paralysed-anaesthetised-adult-men
#7
Berthold Moser, Laurent Audigé, Christian Keller, Joseph Brimacombe, Lukas Gasteiger, Heinz R Bruppacher
BACKGROUND: We hypothesise that oropharyngeal leak pressures differ between the LMA® ProtectorTM and the AuraGainTM, two novel supraglottic airway devices offering the possibility of intubation. METHODS: 98 male patients ASAI-II were randomly assigned to the AuraGainTM or ProtectorTM group. Oropharyngeal leak pressure was measured by incrementing cuff volume in 10 ml steps from 10 ml to 40 ml. The primary outcome was oropharyngeal leak pressure at 40 ml cuff volume...
November 17, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29152207/endotracheal-intubation-in-patients-with-difficult-airway-using-laryngeal-mask-airway-with-bougie-versus-video-laryngoscopy
#8
Hesameddin Modir, Esmail Moshiri, Bita Malekianzadeh, Gholamreza Noori, Abolfazl Mohammadbeigi
Airway management is essential for safe anesthesia and endotracheal intubation is the most important procedure by which critically ill patients can be better managed, especially if done quickly and successfully. This study aimed to compare the techniques of intubation through laryngeal mask airway (LMA) using a bougie versus video laryngoscopy (VL) regarding to intubation success and the quality of intubation indices in patients with difficult airways. This randomized clinical trial was performed on 96 patients aged 16-76 years with Mallampati class 3 or 4 who underwent elective surgery...
July 2017: Medical Gas Research
https://www.readbyqxmd.com/read/29142433/prosopis-juliflora-pods-alkaloid-rich-fraction-in-vitro-anthelmintic-activity-on-goat-gastrointestinal-parasites-and-its-cytotoxicity-on-vero-cells
#9
Helimar Gonçalves Lima, Danilo Cavalcante Gomes, Nathália Silva Santos, Êuder Reis Dias, Mariana Borges Botura, Maria José Moreira Batatinha, Alexsandro Branco
Background: This study was designed to assess the in vitro anthelmintic activity of the fraction containing alkaloid from Prosopis juliflora pods on goat gastrointestinal nematodes using the egg hatch assay (EHA), larval migration inhibition assay (LMIA), and larval motility assay (LMA). Materials and Methods: The alkaloid-rich fraction (AF) - content juliprosopine as major alkaloid - was obtained from ethyl acetate extract after fractionation in Sephadex LH-20 chromatography column and its characterization were made by nuclear magnetic resonance analysis together with literature data comparison...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29131411/the-salt-matters-enhanced-reversibility-of-li-o2-batteries-with-a-li-cf3-so2-n-c4-f9-so2-n-based-electrolyte
#10
Bo Tong, Jun Huang, Zhibin Zhou, Zhangquan Peng
The safety hazards and cycle instability of lithium metal anodes (LMA) constitute significant barriers to progress in lithium metal batteries. This situation is worse in Li-O2 batteries because the LMA is prone to be chemically attacked by O2 shuttled from the cathode. Notwithstanding, efforts on LMA are much sparse than those on the cathode in the realm of Li-O2 batteries. Here, a novel lithium salt of Li[(CF3 SO2 )(n-C4 F9 SO2 )N] (LiTNFSI) is reported, which can effectively suppress the parasitic side reactions and dendrite growth of LMA during cycling and thereby significantly enhance the overall reversibility of Li-O2 batteries...
November 13, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29111401/biofilm-production-is-not-associated-with-poor-clinical-outcome-in-485-patients-with-staphylococcus-aureus-bacteremia
#11
María Guembe, Beatriz Alonso, José Lucio, María Jesús Pérez-Granda, Raquel Cruces, Carlos Sánchez-Carrillo, Ana Fernández-Cruz, Emilio Bouza
OBJECTIVE: Staphylococcus aureus biofilm may constitute a major cause of virulence. Our main objective was to analyze whether there was an association between biofilm production and poor outcome in patients with S. aureus bacteremia. METHODS: We studied 485 S. aureus strains isolated from the blood of patients with bacteremia from 2012 to 2015. We assessed in vitro biomass production using the crystal violet assay (CV) and metabolic activity using the tetrazolium salt assay (XTT)...
October 27, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29109373/development-of-a-lethal-intranasal-exposure-model-of-ebola-virus-in-the-cynomolgus-macaque
#12
Kendra J Alfson, Laura E Avena, Gabriella Worwa, Ricardo Carrion, Anthony Griffiths
Ebola virus (EBOV) is a filovirus that can cause Ebola virus disease (EVD). No approved vaccines or therapies exist for filovirus infections, despite an urgent need. The development and testing of effective countermeasures against EBOV requires use of animal models and a thorough understanding of how the model aligns with EVD in humans. The majority of published studies report outcomes of parenteral exposures for emulating needle stick transmission. However, based on data from EVD outbreaks, close contact exposures to infected bodily fluid seems to be one of the primary routes of EBOV transmission...
October 29, 2017: Viruses
https://www.readbyqxmd.com/read/29073151/inhalation-of-volatile-anesthetics-via-a-laryngeal-mask-is-associated-with-lower-incidence-of-intraoperative-awareness-in-non-critically-ill-patients
#13
Pei-Jen Kuo, Chia-Ling Lee, Jen-Huang Wang, Shiu-Ying Hsieh, Shian-Che Huang, Chen-Fuh Lam
BACKGROUND: Increased incidence of intraoperative awareness was reported in critically ill patients during major operations, particularly under total intravenous (TIVA) or endotracheal general anesthesia (ETGA). However, the incidence and effect of anesthesia techniques on awareness in generally healthy, non-critically ill patients during operations have yet to receive significant attention. METHODS AND RESULTS: This retrospective matched case-control study was conducted between January 2009 to December 2014...
2017: PloS One
https://www.readbyqxmd.com/read/29068977/endotracheal-intubation-in-elective-cervical-surgery-a-randomized-controlled-assessor-blinded-study
#14
RANDOMIZED CONTROLLED TRIAL
Hongna Fan, Huijuan Cao, Yingjie Sun, Keyan Chen, Yugang Diao, Nan Zhou, Guoquan Yao, Jin Zhou, Tiezheng Zhang
BACKGROUND: We compared the effectiveness and safety of endotracheal intubation using the GlideScope (GS) video laryngoscope, CTrach laryngeal mask airway (LMA), or Shikani optical stylet rigid laryngoscope (SOS) during elective cervical surgery. METHODS: Forty-five patients undergoing elective cervical surgery were randomly and equally assigned to endotracheal intubation via GS, LMA, or SOS airway management. RESULTS: Endotracheal intubation was successfully completed in all patients...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29067047/the-use-of-flexible-laryngeal-mask-airway-for-adenoidectomies-an-experience-of-814paediatric-patients
#15
Ozlem Ozmete, Mesut Sener, Esra Caliskan, Meltem Kipri, Anis Aribogan
OBJECTIVE: To assess flexible laryngeal mask airway (F-LMA) use during pediatric adenoidectomies in terms of patient safety, comfort, complication rates and surgeon satisfaction levels. METHODS: Patients who had undergone an elective adenoidectomy after receiving general anesthesia using F-LMA from June 2012 to November 2015 were included. Patients' demographics and the incidence of perioperative complications were investigated. The surgeon's satisfaction level was also evaluated by questionnaire...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29046894/fatty-acid-mimetic-micelles-for-dual-delivery-of-antigens-and-imidazoquinoline-adjuvants
#16
Sema Sevimli, Frances C Knight, Pavlo Gilchuk, Sebastian Joyce, John T Wilson
Vaccine design has undergone a shift towards the use of purified protein subunit vaccines, which offer increased safety and greater control over antigen specificity, but at the expense of immunogenicity. Here we report the development of a new polymer-based vaccine delivery platform engineered to enhance immunity through the co-delivery of protein antigens and the Toll-like receptor 7 (TLR7) agonist imiquimod (IMQ). Owing to the preferential solubility of IMQ in fatty acids, a series of block copolymer micelles with a fatty acid-mimetic core comprising lauryl methacrylate (LMA) and methacrylic acid (MAA), and a poly(ethylene glycol) methyl ether methacrylate (PEGMA) corona decorated with pyridyl disulfide ethyl methacrylate (PDSM) moieties for antigen conjugation were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization...
February 13, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/29045961/-effects-of-recent-upper-respiratory-tract-infections-on-incidence-of-the-perioperative-respiratory-adverse-events-in-children-a-prospective-cohort-study
#17
C Q Li, D X Wang, T Cheng, X Y Zheng
OBJECTIVE: To investigate the effects of the recent upper respiratory tract infections (URI) on the incidence of perioperative respiratory adverse events in children scheduled to undergo general anesthesia and elective surgery. METHODS: In the study, 232 children undergoing general anesthesia with laryngeal mask airway (LMA) for elective ophthalmic surgeries at Peking University First Hospital, Beijing, China, from Nov. 1, 2015 to May 10, 2016 were enrolled. On the day of the surgery, the parents of the children were preoperatively asked to fill out a questionnaire regarding the baseline characteristics and medical history of the children, including gender, age, height, weight, history of URI within the last 2 weeks before anesthesia, history of premature, long-term passive smoking exposure, habitual sleep snoring, and history of asthma...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29041644/thermally-induced-mode-loss-evolution-in-the-coiled-ytterbium-doped-large-mode-area-fiber
#18
Lingchao Kong, Jinyong Leng, Pu Zhou, Zongfu Jiang
We propose a model to calculate the thermally induced mode loss evolution in the coiled ytterbium doped large mode area (LMA) fiber. The mode loss evolution in the coiled conventional step index LMA 20/400 fiber is investigated. Meanwhile, a model of fiber amplifier considering thermally induced mode loss evolution is established. The higher order mode (HOM) suppression between a co-pumping scheme and counter-pumping scheme under the heat load are compared. The simulation shows that the HOM loss decreases quasi-exponentially with the heat load and the bending radius of the ytterbium doped fiber (YDF) should be optimized according to the heat load to achieve effectively single mode operation...
September 18, 2017: Optics Express
https://www.readbyqxmd.com/read/29041484/large-mode-area-inverse-index-fiber-with-a-graded-index-profile-for-high-power-single-mode-operation
#19
Hyun Su Kim, Seongwoo Yoo
We propose a new gain fiber structure with an inverse index profile for high power amplification of a Gaussian single mode beam. A large mode area (LMA) design can be fulfilled with the inverse index profile by implementing a graded index in the depressed core. We numerically show that the proposed gain fiber can guide a single mode Gaussian beam with a large beam area and amplify the beam to a kW level output power.
September 4, 2017: Optics Express
https://www.readbyqxmd.com/read/29041258/manipulating-refractive-index-homogeneity-and-spectroscopy-of-yb-3-doped-silica-core-glass-towards-high-power-large-mode-area-photonic-crystal-fiber-lasers
#20
Fan Wang, Lili Hu, Wenbin Xu, Meng Wang, Suya Feng, Jinjun Ren, Lei Zhang, Danping Chen, Nadège Ollier, Guojun Gao, Chunlei Yu, Shikai Wang
Output power scaling of single mode large mode area (LMA) photonic crystal fiber (PCF) amplifiers urgently requires the low refractive index of Yb(3+)-doped silica glasses whilst maintaining high optical homogeneity. In this paper, we report on a promising alternative Yb(3+)/Al(3+)/F(-)/P(5+)-co-doped silica core-glass (YAFP), which is prepared by modified sol-gel method developed by our group and highly suitable for fabricating high power LMA PCF amplifiers. By controlling the doping combinations of Al(3+)/F(-)/P(5+) in Yb(3+)-doped silica glass,it not only ensures low refractive index (RI) but also maintains the excellent optical homogeneity and spectroscopic properties of Yb(3+)...
October 16, 2017: Optics Express
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