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https://www.readbyqxmd.com/read/29457893/kinetics-thermodynamics-and-mechanism-of-a-novel-biphasic-solvent-for-co2-capture-from-flue-gas
#1
Shihan Zhang, Yao Shen, Peijing Shao, Jianmeng Chen, Lidong Wang
The main issue related to the deployment of amine-based absorption process for CO2 capture from flue gas is its intensive energy penalty. Therefore, this study screened a novel biphasic solvent, comprising a primary amine e.g., triethylenetetramine (TETA) and a tertiary amine e.g., N, N-dimethylcyclohexylamine (DMCA), to reduce the energy consumption. The TETA-DMCA blend exhibited high cyclic capacity of CO2 absorption, favorable phase separation behavior, and low regeneration heat. Kinetic analysis showed that the gas- and liquid-side mass transfer resistances were comparable in the lean solution of TETA-DMCA at 40oC, whereas the liquid-side mass transfer resistance became dominant in the rich solution...
February 19, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29457850/preparation-aroma-characteristics-and-volatile-compounds-of-flavorings-from-enzymatic-hydrolyzed-rice-bran-protein-concentrate
#2
Supeeraya Arsa, Chockchai Theerakulkait
BACKGROUND: Rice bran is by-product obtained from the rice milling industry. The aims of this research were to add value of rice bran by preparation of enzymatic hydrolyzed rice bran protein concentrate (HRPC) as a flavoring agent and the flavoring which was produced by HRPC has not been discovered. Different drying methods (freeze drying and spray drying) and fructose additions were studied for improvement of rice bran protein sensorial aroma characteristics. RESULTS: the most abundant amino acids in liquid HRPC (LH) were glutamic acid, arginine, aspartic acid and leucine, respectively...
February 19, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29457773/optical-waveguide-and-room-temperature-high-quality-nanolasers-from-tin-catalyzed-cdsse-nanostructures
#3
Pengfei Guo, Xia Shen, Baolong Zhang, Haibin Sun, Zhijun Zou, Wenchao Yang, Ke Gong, Yongsong Luo
A simple two-step CVD method is developed to realize the growth of high-quality tin-catalyzed CdSSe alloy nanowires. Microstructural characterizations demonstrate that these wires are high-quality crystalline nanostructures. Local photoluminescence investigation of these nanostructures shows a typical band edge emission at 656 nm with a full-width at half-maximum of 22.3 nm. Optical waveguide measurement along an individual nanowire indicates that the output signal of the guided light has a rapid linear decrease accompanied with maximum redshift about 109 meV after the transmission of 102 μm...
February 19, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29457753/bone-strength-and-exercise-during-youth-the-year-that-was-2017
#4
Kathleen F Janz, Fatima Baptista
The positive effects of physical activity on bone strength are certain. However, researchers have yet to precisely quantify the contribution of specific characteristics of physical activity that affect bone strength in children and adolescents. This commentary highlights 2 noteworthy 2017 publications that addressed osteogenic physical activity dose-response issues. Both papers moved the field forward by providing new insights on physical activity exposures beyond high-impact loading. Koedijk et al's paper was selected because, to the best of our knowledge, it is the first systematic review to solely examine associations between sedentary behavior and indicators of bone strength...
February 19, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29457726/a-robust-oil-in-oil-emulsion-for-the-nonaqueous-encapsulation-of-hydrophilic-payloads
#5
Xiaocun Lu, Joshua S Katz, Adam Schmitt, Jeffrey S Moore
Compartmentalized structures widely exist in cellular systems (organelles) and perform essential functions in smart composite materials (microcapsules, vasculatures, and micelles) to provide localized functionality and enhance materials compatibility. An entirely water-free compartmentalization system is of significant value to the materials community as nonaqueous conditions are critical to packaging microcapsules with water-free hydrophilic payloads while avoiding energy-intensive drying steps. Few nonaqueous encapsulation techniques are known, especially when considering just the scalable processes that operate in batch mode...
February 19, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29457722/spatially-and-temporally-resolved-detection-of-arsenic-in-a-capillary-dbd-by-hydride-generation-high-resolved-optical-emission-spectrometry
#6
Sebastian Burhenn, Jan Kratzer, Milan Svoboda, Felix David Klute, Antje Michels, Damir Veza, Joachim Franzke
A new method for arsenic detection by optical emission spectrometry (OES) is presented. Arsine (AsH3) is generated from liquid solutions by means of hydride generation (HG) and introduced into a capillary dielectric barrier discharge (DBD) where it is atomized and excited. A great challenge in OES is the reduction of the recorded background signal because it negatively affects the limit of detection (LOD). In conventional DBD-OES methods the signal intensity of the line of interest, in this case arsenic, is integrated over a long timescale...
February 19, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29457712/strong-electrochemiluminescence-from-mofs-accelerator-enriched-quantum-dots-for-enhancing-sensing-of-trace-ctni
#7
Xia Yang, Yan-Qing Yu, Ling-Zhi Peng, Yan-Mei Lei, Ya-Qin Chai, Ruo Yuan, Ying Zhuo
Sensitive and feasible electrochemiluminescence (ECL) bioassay relies on the achievement of the ECL signal tags with high and stable signal intensity. In this work, strong electrochemiluminescence (ECL) emission was achieved from metal organic framework (MOFs) accelerator enriched Quantum Dots (CdTe), which was applied as an efficient ECL signal tag for trace biomarker detection. It is particularly worth noting that a novel mechanism to drastically enhance the ECL intensity of CdTe is established because the isoreticular metal organic framework-3 (IRMOF-3) with 2-amino terephthalic acid (2-NH2-BDC) as organic ligand is not only devoted for loading large amount of CdTe via encapsulating effect and internal/external decoration, but also as a novel co-reactant accelerator for promoting the conversion of co-reactant S2O82- into the sulfate radical anion (SO4•-), further boosting the electrochemiluminescence (ECL) emission of CdTe...
February 19, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29457603/the-hearing-of-rural-workers-exposed-to-noise-and-pesticides
#8
Tereza R R Sena, Solano S F Dourado, Lucas V Lima, Ângelo R Antoniolli
n work environments, different physical and chemical agents that may pose a risk to workers' hearing health coexist. In this context, occupational hearing loss stands out. It has mostly been attributed to only noise exposure, although there are other agents, that is, pesticides that might contribute to occupational hearing loss. In this report, two cases will be presented that consider rural workers exposed to pesticides and intense noise generated by an adapted rudimentary vehicle. The noise measured in this vehicle was 88...
January 2018: Noise & Health
https://www.readbyqxmd.com/read/29457587/power-cavitation-guided-blood-brain-barrier-opening-with-focused-ultrasound-and-microbubbles
#9
Mark T Burgess, Iason Zacharias Apostolakis, Elisa E Konofagou
Image-guided monitoring of microbubble-based focused ultrasound (FUS) therapies relies on the accurate localization of FUS-stimulated microbubble activity (i.e. acoustic cavitation). Passive cavitation imaging with ultrasound arrays can achieve this, but with insufficient spatial resolution. In this study, we address this limitation and perform high-resolution monitoring of acoustic cavitation-mediated blood-brain barrier (BBB) opening with a new technique called power cavitation imaging. By synchronizing the FUS transmit and passive receive acquisition, high-resolution passive cavitation imaging was achieved by using delay and sum (DAS) beamforming with absolute time delays...
February 19, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29457522/a-high-prevalence-of-tmd-is-related-to-somatic-awareness-and-pain-intensity-among-healthy-dental-students
#10
Anna Lövgren, Catharina Österlund, Aurelija Ilgunas, Ewa Lampa, Fredrik Hellström
OBJECTIVE: Dental students have been identified as a group with high risks of developing both temporomandibular disorders (TMD) and psychosocial conditions. Our primary aim was to evaluate the cross-sectional prevalence of TMD diagnoses, as defined in the Diagnostic Criteria (DC)/TMD, among dental students. The secondary aim was to evaluate the prevalence and association of behavioural and psychosocial factors in relation to DC/TMD diagnoses. MATERIALS AND METHODS: The study was conducted among undergraduate dental students during the second semester of their third year at the Department of Odontology, Medical Faculty, Umeå University, Sweden...
February 18, 2018: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29457452/a-multiple-stimuli-responsive-fluorescent-sensor-from-citric-acid-and-1-2-aminoethyl-piperazine
#11
Wen Yang, Fangbing Liu, Ran Li, Xiaoji Wang, Wentao Hao
Multi-responsive fluorescent supramolecular materials are quite interesting for that they combine the multi-responsiveness of supramolecules and the high-sensitivity of fluorescent materials. Different from the multi-responsive supramolecular materials based on host-guest interaction, in this report a supramolecular ionic network was fabricated by 1-(2-aminoethyl) piperazine (AEPZ) and citric acids via ionic interactions. Despite that there is none conventional chromophores, the obtained supramolecular ionic material can emit strong fluorescence...
February 19, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29457438/-ct-and-mri-manifestation-of-primary-spinal-large-b-cell-lymphoma
#12
Ping Tian, Kai Jiang, Zhi-Qiang Cai, Yong-Tao Wang, Sheng-de Deng
OBJECTIVE: To investigate CT and MRI characteristics of primary spinal large B cell lymphoma. METHODS: CT and MRI data of 23 patients with primary spinal large B cell lymphoma confirmed by histopathology were retrospectively analyzed from March 2011 to August 2015. Among them, including 14 males and 9 females aged from 28 to 70 years old with an average of 53.4 years old. The clinical manifestation mainly focus on pain around spinal and minority peripheral nerve symptom...
December 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457316/assessment-of-pulmonary-structure-function-relationships-in-young-children-and-adolescents-with-cystic-fibrosis-by-multivolume-proton-mri-and-ct
#13
Francesca Pennati, David J Roach, John P Clancy, Alan S Brody, Robert J Fleck, Andrea Aliverti, Jason C Woods
BACKGROUND: Lung disease is the most frequent cause of morbidity and mortality in patients with cystic fibrosis (CF), and there is a shortage of sensitive biomarkers able to regionally monitor disease progression and to assess early responses to therapy. PURPOSE: To determine the feasibility of noncontrast-enhanced multivolume MRI, which assesses intensity changes between expiratory and inspiratory breath-hold images, to detect and quantify regional ventilation abnormalities in CF lung disease, with a focus on the structure-function relationship...
February 19, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29457114/a-pediatric-case-developing-critical-abdominal-distension-caused-by-a-combination-of-humidified-high-flow-nasal-cannula-oxygen-therapy-and-nasal-airway
#14
Satoki Inoue, Yumiko Tamaki, Shota Sonobe, Junji Egawa, Masahiko Kawaguchi
Background: We describe a pediatric patient who suffered from critical abdominal distention caused by a combination of humidified, high-flow nasal cannula (HHFNC) oxygen therapy and nasal airway. Case presentation: A 21-month-old boy with a history of chronic lung disease was admitted to the intensive care unit (ICU). Immediately after admission, his airway was established using a tracheal tube and mechanical ventilation was started. Five days after the commencement of mechanical ventilation, finally, his trachea was extubated...
2018: JA Clin Rep
https://www.readbyqxmd.com/read/29456737/distinctive-profiles-of-tumor-infiltrating-immune-cells-and-association-with-intensity-of-infiltration-in-colorectal-cancer
#15
Yugang Wu, Lei Yuan, Qicheng Lu, Haiyan Xu, Xiaozhou He
Tumor-infiltrating immune cells are heterogeneous and consist of characteristic compartments, including T helper (Th)1 and regulatory T (Treg) cells that exhibit distinctive biological functions. The present study investigated the profile of infiltrating immune cells from surgically removed tumor tissues from patients with colorectal cancer. The characteristic transcription factors of Th1 and Th2 cells, Treg cells, Th17 cells and T follicular helper (Tfh) cells were analyzed. The results demonstrated that a marked increased number of Treg cells presented in tumor infiltrates when compared with non-tumor adjacent tissues...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456674/inflammation-responses-in-patients-with-pulmonary-tuberculosis-in-an-intensive-care-unit
#16
Qiu-Yue Liu, Fen Han, Li-Ping Pan, Hong-Yan Jia, Qi Li, Zong-De Zhang
Pulmonary tuberculosis caused by Mycobacterium tuberculosis remains a global problem. Inflammatory responses are the primary characteristics of patients with pulmonary tuberculosis in intensive care units (ICU). The aim of the present study was to investigate the clinical importance of inflammatory cells and factors for patients with pulmonary tuberculosis in ICU. A total of 124 patients with pulmonary tuberculosis in ICU were recruited for the present study. The inflammatory responses in patients with pulmonary tuberculosis in ICU were examined by changes in inflammatory cells and factors in the serum...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456602/review-of-management-in-cardiotoxic-overdose-and-efficacy-of-delayed-intralipid-use
#17
Edward Walter, James McKinlay, Jade Corbett, Justin Kirk-Bayley
We present the case of a 51-year-old woman admitted to our intensive care unit following an intentional overdose of a calcium channel antagonist and a beta blocker. The resultant hypotension was reversed with glucagon, noradrenaline, calcium and high-dose insulin. Despite these interventions, she remained vasoplegic and received a delayed, standard dose of intralipid. Subsequently, the vasoplegia resolved rapidly, and the vasopressor was stopped. Here, we review the management of overdose of calcium channel and beta-adrenergic receptor blockers, concentrating on the pharmacology of lipid emulsion therapy...
February 2018: Journal of the Intensive Care Society
https://www.readbyqxmd.com/read/29456562/colonization-with-hospital-flora-and-its-associated-risk-factors-in-neonates-hospitalized-in-neonatal-ward-of-a-teaching-center-in-isfahan-iran
#18
Kiana Shirani, Kamyar Mostafavizadeh, Behrouz Ataei, Khatere Akhani
Background: Due to the high incidence and prevalence of infection in neonatal ward, especially Neonatal Intensive Care Units (NICUs) reported by different studies and the important role of colonization with hospital germs in the development of nosocomial infections, we intended to evaluate the risk of colonization with hospital germs in neonates and its associated risk factors. Materials and Methods: This cross-sectional, descriptive-analytical study was conducted in 2016 in a Teaching Center in Iran...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29456455/resilient-futures-of-a-small-island-a-participatory-approach-in-tenerife-canary-islands-to-address-climate-change
#19
Yeray Hernandez, Ângela Guimarães Pereira, Paulo Barbosa
Adaptation to climate change has been considered to be crucial to current societies, especially for small islands. In this paper the case of Tenerife (in the Canary Islands) is analysed. Tenerife is a small island located northwest of the African continent, in the Atlantic Ocean. Tenerife presents a high vulnerability to heatwaves and Saharan dust events as a consequence of its closeness to the Saharan desert. In fact, increasing frequency of heatwaves and Saharan dust events has been reported and could worsen in the future due to global warming...
February 2018: Environmental Science & Policy
https://www.readbyqxmd.com/read/29456340/acute-febrile-encephalopathy-in-children-a-prospective-study-of-clinical-features-etiology-mortality-and-risk-factors-from-western-india
#20
Kirti Gupta, Charul S Purani, Anirban Mandal, Amitabh Singh
Introduction: Acute febrile encephalopathy (AFE) in children is a medical emergency and could be a manifestation of many systemic and central nervous system pathologies. The clinical features of AFE are nonspecific and etiological spectrum variable depending on the studied population. Materials and Methods: A prospective, observational study was carried out including children aged between 1 month and 12 years with AFE admitted to the Pediatric Intensive Care Unit of a tertiary care hospital in Western India...
January 2018: Journal of Neurosciences in Rural Practice
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