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https://www.readbyqxmd.com/read/29333956/high-efficiency-treatment-of-pta-wastewater-using-a-biogas-jet-assisted-anaerobic-fluidized-bed-reactor
#1
Wei Zhang, Yangyang Feng, Yingwen Chen, Peiwen Li, Shemin Zhu, Shubao Shen
In this paper, a new type of biogas jet assisted anaerobic fluidized bed reactor loaded with a polypropylene (PP) carrier, has been proposed. There was a clear improvement in the fluidized state due to the biogas assisted input when the gas/water ratio was set at 1:3 with a suitable carrier loading of 60%. When the circulating water flow is 30 L/min assisted with biogas 10 L/min, the mixing time shortens from 26 s to 18 s. The performance of anaerobic biodegradation on wastewater treatment was improved largely...
January 15, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29333859/chromatographic-separation-and-visual-detection-on-wicking-microfluidic-devices-quantitation-of-cu2-in-surface-ground-and-drinking-water
#2
Gayan C Bandara, Christopher Heist, Vincent T Remcho
Copper is widely applied in industrial and technological applications, and is an essential micro nutrient for humans and animals. However, exposure to high environmental levels of copper, especially through drinking water, can lead to copper toxicity, resulting in severe acute and chronic health effects. Therefore, regular monitoring of aqueous copper ions has become necessary as recent anthropogenic activities have led to elevated environmental concentrations of copper. On-site monitoring processes require an inexpensive, simple, and portable analytical approach capable of generating reliable qualitative and quantitative data efficiently...
January 15, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29332344/in-vitro-antitumor-activity-of-guttiferone-a-in-human-breast-cancer-cells-is-mediated-via-apoptosis-mitochondrial-mediated-oxidative-stress-and-reactive-oxygen-species-production
#3
Hai-Ming Wu, Yu-Mei Li
PURPOSE: Breast cancer is the second most frequently diagnosed cancer and is considered as the main cause of cancer related death in females. It is estimated that about one-third of women with breast cancer develop metastases and eventually die of this disease. The main treatment options for breast cancer include surgical interventions followed by chemotherapy, hormonotherapy or radiation. However, the side effects associated with the treatment of breast cancer negatively affects the quality of patient's life...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29331328/pilot-clinical-trial-of-high-flow-oxygen-therapy-in-children-with-asthma-in-the-emergency-service
#4
Yolanda Ballestero, Jimena De Pedro, Nancy Portillo, Otilia Martinez-Mugica, Eunate Arana-Arri, Javier Benito
OBJECTIVES: To assess the efficacy of high-flow nasal cannula (HFNC) oxygen therapy and safety in children with asthma and moderate respiratory failure in the emergency department (ED). STUDY DESIGN: This was a prospective randomized pilot trial of children (aged 1-14 years) presenting to a tertiary academic pediatric ED with moderate-to-severe asthma exacerbations between September 2012 and December 2015. Patients with a pulmonary score (PS) ≥6 or oxygen saturation <94% with a face mask despite initial treatment (salbutamol/ipratropium bromide and corticosteroids) were randomized to HFNC or to conventional oxygen therapy...
January 11, 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29326765/pneumocephalus-following-combined-spinal-epidural-anaesthesia-for-total-knee-arthroplasty-a-case-report
#5
Y W Chew, V K Suppan, S R Ashutosh, M M Tew, J H Jimmy-Tan
The authors describe a case of pneumocephalus following epidural anaesthesia for total knee arthroplasty. Multiple attempts in locating the epidural space for the anaesthesia and the use of loss of resistance to air (LORA) technique were identified as the source of air entry. Supportive management was given including high flow oxygenation therapy and spontaneous reabsorption of air was noted five days after surgery. The presence of pneumocephalus should be kept in mind if patient develops neurological complications postoperatively following epidural anaesthesia...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29320927/benefits-of-using-high-volume-low-pressure-tracheal-tube-in-children-undergoing-congenital-cardiac-surgery-evidence-from-a-prospective-randomized-study
#6
Rakesh Chand, Saibal Roy Chowdhury, Emmanuel Rupert, Chandan Kumar Mandal, Pradeep Narayan
BACKGROUND: In the past 2 decades, usage of high-volume-low-pressure microcuffed tracheal tubes in smaller children has increased. However, there is paucity of evidence of its usage in smaller children undergoing congenital cardiac surgery. The aim of this study was to assess if microcuff endotracheal tubes in neonates and younger children undergoing congenital cardiac surgery is associated with better outcomes than uncuffed tubes. METHODS: We carried out this single-center, prospective, randomized study between June and November 2016...
January 1, 2018: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29319396/detrimental-effect-of-systemic-vascular-risk-factors-on-brain-hemodynamic-function-assessed-with-mri
#7
Kevin S King, Min Sheng, Peiying Liu, Christopher D Maroules, Craig D Rubin, Ron M Peshock, Roderick W McColl, Hanzhang Lu
Background and purpose Vascular risk factors have been associated with decreased cerebral blood flow (CBF) but this is etiologically nonspecific and may result from vascular insufficiency or a response to decreased brain metabolic activity. We apply new MRI techniques to measure oxygen extraction fraction (OEF) and cerebral metabolic rate of oxygen consumption (CMRO2), hypothesizing that decreased CBF related to these vascular risk factors will be associated with increased OEF, confirming a primary vascular insufficiency...
January 1, 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29315036/high-flow-nasal-oxygen-therapy
#8
Keir Pickard, Steve Harris
No abstract text is available yet for this article.
January 2, 2018: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/29314741/a-bench-study-of-inhaled-nitric-oxide-delivery-during-high-frequency-percussive-ventilation
#9
Richard D Branson, Jeff Griebel, Dario Rodriquez
BACKGROUND: Safe and effective delivery of inhaled nitric oxide (INO) requires the appropriate interface of ventilator and INO delivery device. METHODS: We compared INO delivery using four configurations with the Transport Sinusoidal Bronchotron® and INOmax DSIR Plus® in a lung model. Ventilator settings and lung model values were held constant. Delivered NO, NO2 , and inspired oxygen (FIO2 ) were measured. The mean difference between set and measured NO was calculated and compared using ANOVA...
January 4, 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29313906/respiratory-complications-of-anaesthesia
#10
REVIEW
G H Mills
Postoperative pulmonary complications are a major determinant of outcome for patients and consume huge resources within hospital, particularly in critical care. Prediction and anticipation of postoperative pulmonary complications are vital for patient selection and, in some cases, for informed patient consent. Being able to assess the likelihood of postoperative pulmonary complications also allows research into methods to reduce them by allowing allocation of patients to the appropriate arms of research trials...
January 2018: Anaesthesia
https://www.readbyqxmd.com/read/29309766/heme-oxygnease-1-induction-by-methylene-blue-protects-raw264-7-cells-from-hydrogen-peroxide-induced-injury
#11
Xiao-Tong Zhang, Xue-Qiang Sun, Chen Wu, Jun-Liang Chen, Jia-Jia Yuan, Qing-Feng Pang, Zhi-Ping Wang
Althoughmethylene blue (MB) has showed strong antioxidant effect, its effect related with heme oxygenase-1(HO-1) is still unclear. Thus, we investigated the effects of MB on HO-1 protein content and enzyme activity, and its protective effect against hydrogen peroxide (H2O2)- induced oxidative damage in RAW264.7 macrophage. The cellviability and the release of lactate dehydrogenase of RAW264.7 were determined. The mitochondrial functions were valuated through these indexes: content of adenosine triphosphate, superoxide dismutase, concentration of reactive oxygen species and mitochondrial membrane potential...
January 5, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29307496/dithiothreitol-supplementation-mitigates-hepatic-and-renal-injury-in-bile-duct-ligated-mice-potential-application-in-the-treatment-of-cholestasis-associated-complications
#12
Reza Heidari, Vahid Ghanbarinejad, Hamidreza Mohammadi, Asrin Ahmadi, Athena Esfandiari, Negar Azarpira, Hossein Niknahad
Cholestasis is a disorder characterized by impaired bile flow and accumulation of cytotoxic bile acids in the liver. On the other hand, oxidative stress and its deleterious consequences seem to have a significant role in cholestasis-induced organ injury. Hence, antioxidants and thiol-reducing agents could have potential protective effect against this complication. The current investigation was designed to evaluate the effect of dithiothreitol (DTT) as a safe and clinically applicable thiol-reductant in cholestatic animals...
January 4, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29306197/effects-ofdirect-current-on-klebsiella-spp-viability-and-corresponding-resistance-gene-expression-in-simulative-bio-electrochemical-reactors
#13
Hua Li, Xiao-Li Yang, Hai-Liang Song, Shuai Zhang, Xi-Zi Long
The fate of antibiotic-resistant bacteria (ARB) and associated antibiotic-resistant gene (ARG) expression under electrolytic stimulation in bio-electrochemical reactors (BERs) was unknown. In this study, sulfadiazine resistant bacteria (Klebsiella spp.), which were isolated from a BER, were subjected to constant direct current (DC) stimulation in a simulated BER. With an increase of the current from 7 to 28 mA, it was found that lactic dehydrogenase (LDH) showed a 1.03-, 1.21-, 1.34-, and 1.46-fold value compared with the control at 48 h, indicating that the cell membrane permeability had increased...
December 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/29305229/towards-improved-accuracy-in-modeling-aeration-efficiency-through-understanding-bubble-size-distribution-dynamics
#14
Andreia Amaral, Giacomo Bellandi, Usman Rehman, Ramiro Neves, Youri Amerlinck, Ingmar Nopens
Aeration is the largest energy consumer in most water and resource recovery facilities, which is why oxygen transfer optimization is fundamental to improve energy efficiency. Although oxygen transfer is strongly influenced by the bubble size distribution dynamics, most aeration efficiency models currently do not include this influence explicitly. In few cases, they assume a single average bubble size. The motivation of this work is to investigate this knowledge gap, i.e. a more accurate calculation of the impact of bubble size distribution dynamics on oxygen transfer...
November 3, 2017: Water Research
https://www.readbyqxmd.com/read/29303795/nonejecting-hearts-on-femoral-veno-arterial-extracorporeal-membrane-oxygenation-aortic-root-blood-stasis-and-thrombus-formation-a-case-series-and-review-of-the-literature
#15
Hanane Hireche-Chikaoui, Martin R Grübler, Andreas Bloch, Stephan Windecker, Stefan Bloechlinger, Lukas Hunziker
OBJECTIVES: Cardiogenic shock constitutes the final common pathway of cardiac dysfunction associated with tissue hypoperfusion and organ failure. Besides treatment of the underlying cause, temporary mechanical circulatory support serves as a supportive measure. Extracorporeal membrane oxygenation can effectively prevent hypoxemia and end-organ dysfunction, but knowledge about patient selection, risks, and complications remains sparse. DATA SOURCES: Clinical observation...
January 4, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29299120/hif-1%C3%AE-contributes-to-hypoxia-adaptation-of-the-naked-mole-rat
#16
Bang Xiao, Shiyong Wang, Guoshi Yang, Xiaoxi Sun, Shanmin Zhao, Lifang Lin, Jishuai Cheng, Wenjing Yang, Wei Cong, Wei Sun, Guanghan Kan, Shufang Cui
Background/Aims: Naked mole rats (NMRs) spend their lives in burrow systems containing very low levels of oxygen, indicating long-term hypoxic exposure, and suggesting that pathological changes caused by hypoxia are attenuated or absent in this hypoxia-tolerant species. The mechanisms underlying NMRs hypoxia tolerance remain poorly understood. In this study, we explored whether hypoxia inducible factor 1α (HIF-1α), and vascular endothelial growth factor A (VEGFA) play a role in NMRs adaption to hypoxia...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29289705/molecular-imaging-of-tumor-photoimmunotherapy-evidence-of-photosensitized-tumor-necrosis-and-hemodynamic-changes
#17
Shun Kishimoto, Nobu Oshima, Kazutoshi Yamamoto, Jeeva Munasinghe, Jan Henrik Ardenkjaer-Larsen, James B Mitchell, Peter L Choyke, Murali C Krishna
Near-infrared photoimmunotherapy (NIR PIT) employs the photoabsorbing dye IR700 conjugated to antibodies specific for cell surface epidermal growth factor receptor (EGFR). NIR PIT has shown highly selective cytotoxicity in vitro and in vivo. Cell necrosis is thought to be the main mode of cytotoxicity based mainly on in vitro studies. To better understand the acute effects of NIR PIT, molecular imaging studies were performed to assess its cellular and vascular effects. In addition to in vitro studies for cytotoxicity of NIR PIT, the in vivo tumoricidal effects and hemodynamic changes induced by NIR PIT were evaluated by 13C MRI using hyperpolarized [1,4-13C2] fumarate, R2* mapping from T2*-weighted MRI, and photoacoustic imaging...
December 29, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29289339/composite-imprinted-macroporous-hydrogels-for-haemoglobin-purification-from-cell-homogenate
#18
Solmaz Hajizadeh, Karin Kettisen, Magnus Gram, Leif Bülow, Lei Ye
Purification of haemoglobin (Hb) has been studied for many years due to its ability to act as an oxygen carrier and its possible use in urgent clinical treatment. In this study, different types of chromatography columns were developed for Hb purification. Two of them showed satisfactory results as affinity chromatography columns and were thus studied more extensively. The affinity adsorbents were prepared by molecular imprinting techniques. In the first case, Pickering emulsion polymerization was used to prepare affinity adsorbents based on molecular imprinting technology...
December 18, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29288812/flow-cytometic-analysis-of-penaeus-monodon-haemocyte-responses-to-poly-i-c
#19
Jian-An Xian, Xiu-Xia Zhang, Jing-Feng Sun, Lei Wang, Dong-Mei Wang, Jun-Tao Li, Rui-Jun Duan, Yao-Peng Lu, Pei-Hua Zheng
This study was aimed at investigating the cellular responses of Penaeus monodon haemocytes to poly I:C stimulation using flow cytometric assay. Total haemocyte count (THC), percentages of different haemocyte subpopulations [hyaline cells (HC), semigranular cells (SGC) and granular cells (GC)], non-specific esterase activity (EA), total reactive oxygen species/reactive nitrogen species (ROS/RNS) production, nitric oxide (NO) production, apoptotic haemocyte ratio and plasmic phenoloxidase (PO) activity were determined in poly I:C-injected shrimp...
December 27, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29288528/overexpression-of-mir-22-attenuates-oxidative-stress-injury-in-diabetic-cardiomyopathy-via-sirt-1
#20
Qinghui Tang, Qiang Len, Zheng Liu, W D Wang
BACKGROUND/AIMS: Oxidative stress injury is believed to be important in diabetic cardiomyopathy. Recent evidence indicates that miR-22 plays an important role in various cardiovascular diseases, but the protective role of miR-22 in diabetic cardiomyopathy remains undetermined. METHODS: Diabetes was induced in male C57BL/6 mice by intraperitoneal injection with streptozotocin combined with a high-fat diet and miR-22 was overexpressed following transfection with adeno-associated virus...
December 29, 2017: Cardiovascular Therapeutics
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