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Diffusion capacity

Kerry Anne Rambaran, Charles F Seifert
Drug-induced interstitial lung disease is a rare condition attributed to several medications, including antimicrobial agents such as amphotericin B, anti-inflammatory agents such as methotrexate, biologic agents such as bevacizumab, and cardiovascular agents and chemotherapeutic agents. We describe the case of a 73-year-old female who developed interstitial lung disease following chronic use of nitrofurantoin for a urinary tract infection (UTI). The patient was taking nitrofurantoin 100 mg capsules twice daily for approximately 3 years...
December 2016: Drug Saf Case Rep
Ali E Aliev, Sahila Perananthan, John P Ferraris
Thermoacoustic performance of thin freestanding sheets of carbonized poly(acrylonitrile) and polybenzimidazole nanofibers are studied as promising candidates for thermophones. We analyze thermodynamic properties of sheets using transport parameters of single nanofibers and their aligned and randomly electrospun thin film assemblies. The electrical and thermal conductivities, thermal diffusivity, heat capacity, and infrared blackbody radiation are investigated to extract the heat exchange coefficient and enhance the energy conversion efficiency...
October 24, 2016: ACS Applied Materials & Interfaces
Hatice Tohma, Ekrem Köksal, Ömer Kılıç, Yusuf Alan, Mustafa Abdullah Yılmaz, İlhami Gülçin, Ercan Bursal, Saleh H Alwasel
The identification and quantification of the phenolic contents of methanolic extracts of three Salvia L. species namely S. brachyantha (Bordz.) Pobed, S. aethiopis L., and S. microstegia Boiss. and Bal. were evaluated using reverse phase high performance liquid chromatography, UV adsorption, and mass spectrometry (RP-HPLC/MS). In order to determine the antioxidant capacity of these species, cupric ions (Cu(2+)) reducing assay (CUPRAC) and ferric ions (Fe(3+)) reducing assay (FRAP) were performed to screen the reducing capacity and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay was employed for evaluation of the radical scavenging activity for both solvents...
October 21, 2016: Antioxidants (Basel, Switzerland)
Ayman M Atta, Hamad A Al-Lohedan, Ahmed M Tawfik, Abdelrahman O Ezzat
This work first reports the preparation of super-amphiphilic silica-nanogel composites to reduce the contact angle of water to increase the diffusion of pollutant into adsorbents. In this respect, the silica nanoparticles were encapsulated into nanogels based on ionic and nonionic polyacrylamides by dispersion polymerization technique. The morphologies and the dispersion stability of nanogel composites were investigated to clarify the ability of silica-nanogel composites to adsorb at different interfaces. The feasibility of silica polyacrylamide nanogel composites to act as a high-performance adsorbent for removal of methylene blue (MB) dye and heavy metals (Co(2+) and Ni(2+)) from aqueous solution was investigated...
October 19, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Puneet Manocha, Gitanjali Chandwani, Soumen Das
With current research focus to interconnect the molecular communication environment with external environment, it is imperative to design external devices working on molecular communication schemes to be interfaced with in-vivo molecular network. Recently, efforts have been made to integrate molecular communication with Lab-on-chip (LOC); one of the techniques used in LOC for manipulation and transportation of molecules is Dielectrophoresis (DEP). We propose the use of DEP in molecular communication to maintain in-sequence delivery of molecules...
October 19, 2016: IEEE Transactions on Nanobioscience
Han Yang, Amir Sheikhi, Theo G M van de Ven
A novel biopolymer-based aerogel was developed by freeze-drying a hydrogel, synthesized from crosslinking bifunctional hairy nanocrystalline cellulose and carboxymethylated chitosan through a Schiff base reaction. The nanocelluloses, bearing aldehyde and carboxylic acid groups, facilitated the crosslinking with chitosan through imine bond formation while providing negatively-charged functional groups, and chitosan was modified to accommodate carboxylic acid. The potential of this bio-aerogel in environmental remediation was examined in a model system comprising methylene blue, a cationic dye...
October 24, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Natalie E Taylor, Sarah E Baker, Thomas P Olson, Sophie Lalande, Bruce D Johnson, Eric M Snyder
BACKGROUND: Beta-2 adrenergic receptors (β2ARs) are located throughout the body including airway and alveolar cells. The β2ARs regulate lung fluid clearance through a variety of mechanisms including ion transport on alveolar cells and relaxation of the pulmonary lymphatics. We examined the effect of an inhaled β2-agonist (albuterol) on alveolar-capillary membrane conductance (DM) and pulmonary capillary blood volume (VC) in healthy humans. METHODS: We assessed the diffusing capacity of the lungs for carbon monoxide (DLCO) and nitric oxide (DLNO) at baseline, 30 minutes, and 60 minutes following nebulized albuterol (2...
2016: Clinical Medicine Insights. Circulatory, Respiratory and Pulmonary Medicine
Alexander J Sweidan, Navneet K Singh, Natasha Dang, Vinh Lam, Jyoti Datta
INTRODUCTION: Amiodarone is often used in the suppression of tachyarrhythmias. One of the more serious adverse effects includes amiodarone pulmonary toxicity (APT). Several pulmonary diseases can manifest including interstitial pneumonitis, organizing pneumonia, acute respiratory distress syndrome, diffuse alveolar hemorrhage, pulmonary nodules or masses, and pleural effusion. Incidence of APT varies from 5-15% and is correlated to dosage, age of the patient, and preexisting lung disease...
2016: Clinical Medicine Insights. Case Reports
Ebrahim Alipanahpour Dil, Mehrorang Ghaedi, Arash Asfaram
The present research is focused on the synthesis and characterization of zinc (II) oxide nanorods loaded on activated carbon (ZnO-NRs-AC) to prepare an outstanding adsorbent for the simultaneous adsorption of heavy metals and dyes as hazardous pollutant using ultrasound energy. The adsorbent was identified by Scanning Electron Microscope (SEM), Transmission Electron Microscopy (TEM), Energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) analysis. The individual effects and possible interactions between the most effective variables including initial metal ions (Cd(2+) and Co(2+)) and azo dyes (methylene blue (MB) and crystal violet (CV)) concentration, adsorbent dosage and ultrasonic time on the responses were investigated by response surface methodology (RSM) and optimum conditions was fixed at Cd(2+), Co(2+), MB and CV concentrations were 25, 24, 18 and 14mgL(-1), respectively, 0...
January 2017: Ultrasonics Sonochemistry
Ebrahim Alipanahpour Dil, Mehrorang Ghaedi, Arash Asfaram, Shaaker Hajati, Fatemeh Mehrabi, Alireza Goudarzi
Copper oxide nanoparticle-loaded activated carbon (CuO-NP-AC) was synthesized and characterized using different techniques such as FE-SEM, XRD and FT-IR. It was successfully applied for the ultrasound-assisted simultaneous removal of Pb(2+) ions and malachite green (MG) dye in binary system from aqueous solution. The effect of important parameters was modeled and optimized by artificial neural network (ANN) and response surface methodology (RSM). Maximum simultaneous removal percentages (>99.0%) were found at 25mgL(-1), 20mgL(-1), 0...
January 2017: Ultrasonics Sonochemistry
Ahmad Reza Bagheri, Mehrorang Ghaedi, Arash Asfaram, Ali Akbar Bazrafshan, Ramin Jannesar
The present study the ultrasound assisted adsorption of dyes in single system onto Fe3O4 magnetite nanoparticles loaded on activated carbon (Fe3O4-MNPs-AC) was described following characterization and identification of this adsorbent by conventional techniques likes field emission scanning electron microscopy, transmission electron microscopy, particle-size distribution, X-ray diffraction and Fourier transform infrared spectroscopy. A central composite design in conjunction with a response surface methodology according to f-test and t-test for recognition and judgment about significant term led to construction of quadratic model which represent relation among responses and effective terms...
January 2017: Ultrasonics Sonochemistry
H Cumming, N A Herbert
Turbidity as a result of increased suspended sediments in coastal waters is an environmental stress of worldwide concern. Recent research on fish suggests that detrimental changes to gill structure can occur in turbid waters, with speculation that these alterations diminish fitness variables, such as growth and development, by negatively impacting the O2 uptake capacity (respiration) of fish. Specifically to address this unknown, the impact of turbid water on the gill structure, somatic growth rate and O2 uptake rates of a juvenile sparid species (Pagrus auratus) was addressed following exposure to five different turbidity treatments (<10, 20, 40, 60 or 80 nephelometric turbidity units) for 30 days...
2016: Conservation Physiology
Xu Jiao, Yuvaraja Gutha, Weijiang Zhang
The utilization of CS/PVA/CuO as a novel adsorbent for the removal of Pb(II) from aqueous solution has been examined in a batch adsorption process with several experimental conditions including initial solution pH, dose, contact time, initial metal ion concentration, and temperature. The new and novel material was characterized by structural (XRD), spectral (FTIR), morphological with elemental (SEM with EDS), and size of the nanoparticles (TEM) analyses. The pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetics equations were used to analyze the kinetic data of the adsorption process and the data was fitted well with the pseudo-second-order kinetic model with R(2) values (close to the unity)...
October 13, 2016: Colloids and Surfaces. B, Biointerfaces
Jinlong Cui, Yongfu Cui, Shaohui Li, Hongliang Sun, Zhongsheng Wen, Juncai Sun
Micro-sized porous SiOx@C composites used as anode for lithium-ion batteries (LIBs) are synthesized from rice husks (RHs) through low-temperature (700 °C) aluminothermic reduction. The resulting SiOx@C composite shows mesoporous irregular particle morphology with a high specific surface area of 597.06 m2/g under the optimized reduction time. This porous SiOx@C composite is constructed by SiOx nanoparticles uniformly dispersed in the C matrix. When tested as anode material for LIBs, it displays considerable specific capacity (1230 mAh/g at a current density of 0...
October 20, 2016: ACS Applied Materials & Interfaces
Zhen Li, Jintao Zhang, Buyuan Guan, Da Wang, Li-Min Liu, Xiong Wen David Lou
Lithium-sulfur batteries show advantages for next-generation electrical energy storage due to their high energy density and cost effectiveness. Enhancing the conductivity of the sulfur cathode and moderating the dissolution of lithium polysulfides are two key factors for the success of lithium-sulfur batteries. Here we report a sulfur host that overcomes both obstacles at once. With inherent metallic conductivity and strong adsorption capability for lithium-polysulfides, titanium monoxide@carbon hollow nanospheres can not only generate sufficient electrical contact to the insulating sulfur for high capacity, but also effectively confine lithium-polysulfides for prolonged cycle life...
October 20, 2016: Nature Communications
Argyris Tzouvelekis, Jose D Herazo-Maya, Martin Slade, Jen-Hwa Chu, Giuseppe Deiuliis, Changwan Ryu, Qin Li, Koji Sakamoto, Gabriel Ibarra, Hongyi Pan, Mridu Gulati, Danielle Antin-Ozerkis, Erica L Herzog, Naftali Kaminski
BACKGROUND AND OBJECTIVE: Idiopathic pulmonary fibrosis (IPF) is a progressive disease with poor prognosis and variable clinical course. Although matrix metalloproteinase-7 (MMP-7) is emerging as an important IPF biomarker, reproducibility across studies is unclear. We aimed to determine whether a previously reported prognostic threshold for MMP-7 was predictive of mortality in an independent cohort of IPF patients. METHODS: MMP-7 concentrations obtained from heparinized plasma samples were determined by ELISA in 97 patients with IPF and 41 healthy controls...
October 19, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
Fatma Tokgoz Akyıl, Tülin Sevim, Canan Akman, Emine Aksoy, Meltem Ağca, Oguz Aktas, Mustafa Akyıl
BACKGROUND: Combined idiopathic pulmonary fibrosis (IPF) and emphysema (CPFE) has been reported to be more common in male smokers. A number of studies comparing CPFE patients with fibrosis-only patients have reported a similar prognosis while others have reported a significantly shorter survival. OBJECTIVES: In present study, we aimed to compare baseline characteristics of patients with IPF according to emphysema presence. We asssessed the prognostic value of emphysema along with each other parameter...
October 7, 2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
Charlotte A Jørgensen, Henning S Jensen, Sara Egemose
Measures such as stormwater ponds, constructed wetlands and buffer strips along streams are used to reduce diffuse phosphorus (P) loading to surface waters. These systems often retain particulate P well, whereas retention of dissolved P is less efficient and might require addition of P adsorbents. In this study, we screened waterwork ochre sludge (WWS) originating from groundwater treatment and ochre sludge from ochre precipitation basins along streams for their applicability as P adsorbents at ambient P concentrations...
October 19, 2016: Environmental Technology
Zhan Liang, Leslie A Hoffman, Mehdi Nouraie, Daniel J Kass, Michael P Donahoe, Kevin F Gibson, Melissa I Saul, Kathleen O Lindell
BACKGROUND: Palliative care has been recommended as a means to assist patients with idiopathic pulmonary fibrosis (IPF) in managing symptom burden and advanced care planning. Timing of referral is important because although most patients display a gradually progressive course, a minority experience acute deterioration, an outcome associated with high mortality. AIM: To describe characteristics of IPF patients referred to a specialty lung disease center over a 10-year period who experienced acute deterioration and subsequent intensive care unit (ICU) admission, including frequency and timing of referral to palliative care...
October 18, 2016: Journal of Palliative Medicine
Chan Yeu Pu, Mohamed Rizwan Haroon Al Rasheed, Marin Sekosan, Vibhu Sharma
A 61-year-old man was evaluated for a 2 month history of cough and dyspnea without relevant exposures other than pyrethrin containing insecticidal sprays he used while grooming dogs almost daily. High Resolution Computed Tomography (HRCT) of the chest demonstrated a Non-Specific Interstitial Pneumonia (NSIP) pattern. Pulmonary function testing revealed an isolated mildly reduced diffusion capacity. Bronchoalveolar lavage (BAL) results confirmed the presence of foamy histiocytes, lymphocytes, and polymorphonuclear cells consistent with ongoing exposure...
October 17, 2016: American Journal of Industrial Medicine
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