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https://www.readbyqxmd.com/read/28532102/islet-encapsulated-implantable-composite-hollow-fiber-membrane-based-device-a-bioartificial-pancreas
#1
Rohit S Teotia, Sachin Kadam, Atul Kumar Singh, Surendra Kumar Verma, Ashutosh Bahulekar, Sujata Kanetkar, Jayesh Bellare
Islets from xeno-sources and islet like clusters derived from autologus stem cells have emerged as alternatives to cadaveric pancreas used for treatment of type 1 diabetes. However, the immuno-isolation of these islets from the host immune system suffers from the issue of biocompatibility and hypoxia. To overcome the issues of immunobarrier biocompatibility, we developed a Polysulfone (Psf)/TPGS composite hollow fiber membrane (HFM) using a hollow fiber spinning pilot plant specially developed for this purpose...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531979/synthesis-and-characterization-of-glycyrrhizic-acid-coated-iron-oxide-nanoparticles-for-hyperthermia-applications
#2
Mostafa Saeedi, Omid Vahidi, Shahin Bonakdar
In the present study, iron oxide magnetic nanoparticles (IONPs) were synthesized using the oxidative precipitation method for biomedical applications. Glycyrrhizic acid (GA) extracted from the roots of licorice plant was used as the coating agent for the synthesized nanoparticles (GAIONPs). The crystal phase, morphology and size were investigated by XRD, FE-SEM and TEM. The saturation magnetization (ms) value of the nanoparticles was measured by VSM indicating lowered ms of the GAIONPs with respect to that of the IONPs due to the presence of GA...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531965/does-arbuscular-mycorrhizal-fungus-affect-cadmium-uptake-and-chemical-forms-in-rice-at-different-growth-stages
#3
Na Luo, Xing Li, Ao Yu Chen, Li Jun Zhang, Hai Ming Zhao, Lei Xiang, Quan Ying Cai, Ce Hui Mo, Ming Hung Wong, Hui Li
Effects of the arbuscular mycorrhizal fungus (AMF) - Rhizophagus intraradices (a mix of root pieces, mycelium pieces and spores) on the temporal variation of Cd uptake and chemical forms in rice at four growth periods (tillering, jointing, flowering, and ripening stages) were investigated in soil added with 0, 2 and 10mgCdkg(-1). Results showed that the interactions amongst rice growth stages, soil Cd concentrations and mycorrhizal inoculation had significant effects (P˂0.001) on root biomass, straw and root Cd concentrations, and straw Cd chemical forms in rice...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531959/occurrence-and-removal-of-pharmaceuticals-hormones-personal-care-products-and-endocrine-disrupters-in-a-full-scale-water-reclamation-plant
#4
Ngoc Han Tran, Karina Yew-Hoong Gin
This study provided the first comprehensive data on the occurrence and removal of twenty-five target emerging contaminants (ECs) in a full-scale water reclamation plant (WRP) in the Southeast Asian region. Nineteen out of the twenty-five ECs were ubiquitously detected in raw influent samples. Concentrations of the detected ECs in raw influent samples ranged substantially from 44.3 to 124,966ng/L, depending upon the compound and sampling date. The elimination of ECs in full-scale conventional activated sludge (CAS) and membrane bioreactor (MBR) systems at a local WRP was evaluated and compared...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531956/sediment-microbes-mediate-the-impact-of-nutrient-loading-on-blue-carbon-sequestration-by-mixed-seagrass-meadows
#5
Songlin Liu, Zhijian Jiang, Jingping Zhang, Yunchao Wu, Xiaoping Huang, Peter I Macreadie
Recent studies have reported significant variability in sediment organic carbon (SOC) storage capacity among seagrass species, but the factors driving this variability are poorly understood, limiting our ability to make informed decisions about which seagrass types are optimal for carbon offsetting and why. Here we show that differences in SOC storage capacity among species within the same geomorphic environment can be explained (in part) by below-ground processes in response to nutrient load; specifically, differences in the activity of microbes harboured by morphologically-different seagrass species...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531954/arbuscular-mycorrhiza-fungi-facilitate-rapid-adaptation-of-elsholtzia-splendens-to-copper
#6
Junmin Li, Huijuan Liang, Ming Yan, Luxi Chen, Huating Zhang, Jie Liu, Suizi Wang, Zexin Jin
Closely associated microbes have been shown to drive local adaptation of plants. However, few studies provide direct evidence, disclosing the role of arbuscular mycorrhiza fungi (AMF) in their rapid adaptation of plants toward heavy metal tolerance. Elsholtzia splendens is a Cu-tolerant plant that was used as a model plant to study seed morphological traits as well as traits related to seed germination and seedling growth. This was achieved after acclimation for two generations with 1000mg/kg CuSO4 in either absence or presence of AMF...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531950/modelling-pesticides-volatilisation-in-greenhouses-sensitivity-analysis-of-a-modified-pearl-model
#7
Michael Houbraken, Kim Doan Ngoc, Frederik van den Berg, Pieter Spanoghe
BACKGROUND: The application of the existing PEARL model was extended to include estimations of the concentration of crop protection products in greenhouse (indoor) air due to volatilisation from the plant surface. The model was modified to include the processes of ventilation of the greenhouse air to the outside atmosphere and transformation in the air. RESULTS: A sensitivity analysis of the model was performed by varying selected input parameters on a one-by-one basis and comparing the model outputs with the outputs of the reference scenarios...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531949/wastewater-discharge-impact-on-drinking-water-sources-along-the-yangtze-river-china
#8
Zhuomin Wang, Dongguo Shao, Paul Westerhoff
Unplanned indirect (de facto) wastewater reuse occurs when wastewater is discharged into surface waters upstream of potable drinking water treatment plant intakes. This paper aims to predict percentages and trends of de facto reuse throughout the Yangtze River watershed in order to understand the relative contribution of wastewater discharges into the river and its tributaries towards averting water scarcity concerns. The Yangtze River is the third longest in the world and supports more than 1/15 of the world's population, yet the importance of wastewater on the river remains ill-defined...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531947/shifts-in-the-relative-abundance-of-bacteria-after-wine-lees-derived-biochar-intervention-in-multi-metal-contaminated-paddy-soil
#9
Min Xu, Hongxia Xia, Jun Wu, Gang Yang, Xiaohong Zhang, Hong Peng, Xiaoyu Yu, Li Li, Hong Xiao, Hui Qi
The impact of biochar application on soil ecological functions depends on the diversity of soil conditions and of the feedstocks from which biochar is obtained. Moreover, little information is available on the effect of biochar on dynamic changes in microorganisms with the development of rice plants in multi-metal-contaminated paddy soil amended with wine-lees-derived biochar. In this paper, biochar obtained from the pyrolysis of wine lees at 600°C was used to investigate the potential role of biochar in maintaining soil ecological functions, with consideration of the alteration of the microbial population over periods of rice growth...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531942/target-signalling-pathways-of-natural-plant-derived-radioprotective-agents-from-treatment-to-potential-candidates-a-reverse-thought-on-anti-tumour-drugs
#10
REVIEW
Ke-Li Yun, Zhen Yu Wang
Radiation damage can occur in nuclear power plant workers when physical protections fail, which results in nuclear leakage through the protective layers. Alternatively, workers may be unable to use physical protection in time (in the case of a sudden nuclear weapons attack). In addition, patients who receive local radiotherapy and are not allowed to adopt local physical protection may experience radiation damage. Thus, protection against chemical radiation has become indispensable. In view of the side effects caused by synthetic radioprotective agents (such as amisfostine), searching for radioprotective agents from plant sources is an alternative strategy...
May 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531918/protective-effect-of-ethanolic-extract-of-urtica-urens-l-against-the-toxicity-of-imidacloprid-on-bone-remodeling-in-rats-and-antioxidant-activities
#11
Massara Mzid, Riadh Badraoui, Sameh Ben Khedir, Zouheir Sahnoun, Tarek Rebai
Imidacloprid (IMI) is very harmful to human health and cause problems. Recently, plants have been considered as potential agents for protection against these disorders. Urtica urens L. (UU) is very useful for relieving rheumatic pains and there is no scientific evidence justifying its use, which lets us think of its direct effect on the bone. This study aimed to investigate the protective effect of UU against toxicity effects of IMI in female rat. Rats were divided into control group, 3 groups treated with IMI at 50, 200 or 300mg/kg/day and 3 groups co-treated with IMI (50, 200 or 300mg/kg/day)+100mg/kg/day of UU...
May 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531861/greenhouse-gases-from-membrane-bioreactors-mathematical-modelling-sensitivity-and-uncertainty-analysis
#12
Giorgio Mannina, Alida Cosenza, George A Ekama
In this study a new mathematical model to quantify greenhouse gas emissions (namely, carbon dioxide and nitrous oxide) from membrane bioreactors (MBRs) is presented. The model has been adopted to predict the key processes of a pilot plant with pre-denitrification MBR scheme, filled with domestic and saline wastewater. The model was calibrated by adopting an advanced protocol based on an extensive dataset. In terms of nitrous oxide, the results show that an important role is played by the half saturation coefficients related to nitrogen removal processes and the model factors affecting the oxygen transfer rate in the aerobic and MBR tanks...
May 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28531837/possible-developments-for-ex-situ-phytoremediation-of-contaminated-sediments-in-tropical-and-subtropical-regions-review
#13
REVIEW
Marco Pittarello, Jader Galba Busato, Paolo Carletti, Leonardo Barros Dobbss
The growing problem of remediation of contaminated sediments dredged from harbor channels needs to be resolved by a cost effective and sustainable technology. Phytoremediation, by ex situ remediation plants, seems to have the potential to replace traditional methods in case of moderately contaminated sediments. On the other side, the need to mix sediments with soil and/or sand to allow an easier establishment of most employed species causes an increase of the volume of the processed substrate up to 30%. Moreover the majority of phytoremediating species are natives of temperate climate belt...
April 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/28531799/numb-had-anti-tumor-effects-in-prostatic-cancer
#14
Ji Sun, Kai Wang, Jingfei Teng, Yufu Yu, Runmiao Hua, Haiyong Zhou, Dachuan Zhong, Yi Fan
AIM: The aim of this study was to explain the Numb anti-cancer effects in the prostatic cancer. METHODS: Collecting the 20 prostatic cancer patients and analyzing the correlation between Numb and Glease score. Transfection Numb into DU-145 and PC-3 cells, measuring the proliferation rate of difference groups by MTT assay, evaluating the cell apoptosis and cell cycle of difference group by Flow cytometry; measuring the invasion and migration abilities by transwell and wound healing assays...
May 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531784/gut-microbiota-mediated-benefits-of-barley-kernel-products-on-metabolism-gut-hormones-and-inflammatory-markers-as-affected-by-co-ingestion-of-commercially-available-probiotics-a-randomized-controlled-study-in-healthy-subjects
#15
Anne Nilsson, Elin Johansson-Boll, Jonna Sandberg, Inger Björck
BACKGROUND AND AIMS: Barley kernel based products have been shown to induce benefits on blood glucose regulation, cardio-metabolic risk markers and appetite regulating hormones in a time perspective of 11-16 h after intake. The mechanisms have been assigned to gut fermentation of indigestible carbohydrates. The purpose of the present study was to evaluate if the modulatory effects of barley on markers of metabolic- and appetite regulation are affected by a dietary background including a mixture of commercially available probiotics...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531658/co-plantation-of-aquatic-macrophytes-typha-angustifolia-and-paspalum-scrobiculatum-for-effective-treatment-of-textile-industry-effluent
#16
Vishal V Chandanshive, Niraj R Rane, Asif S Tamboli, Avinash R Gholave, Rahul V Khandare, Sanjay P Govindwar
Field treatment of textile industry effluent was carried out in constructed drenches (91.4m×1.2m×0.6m; 65.8m(3)) planted independently with Typha angustifolia, Paspalum scrobiculatum and their co-plantation (consortium-TP). The in situ treatment of effluent by T. angustifolia, P. scrobiculatum and consortium-TP was found to decrease ADMI color value by 62, 59 and 76%, COD by 65, 63 and 70%, BOD by 68, 63 and 75%, TDS by 45, 39 and 57%, and TSS by 35, 31 and 47%, respectively within 96h. Heavy metals such as arsenic, cadmium, chromium and lead were also removed up to 28-77% after phytoremediation...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531603/the-consumption-of-dietary-supplement-which-contains-plant-extracts-affects-superoxide-dismutase-activity-in-healthy-adults
#17
Maria Choleva, Eleftheria Alexandraki, Georgia Afxediou, Labrini Gabrihl, Chryssa Argyrou, Ioannis Malagaris, Elizabeth Fragopoulou
No abstract text is available yet for this article.
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531558/accumulation-translocation-and-conversion-of-six-arsenic-species-in-rice-plants-grown-near-a-mine-impacted-city
#18
Li Ma, Lin Wang, Yuyu Jia, Zhaoguang Yang
Paddy rice (Oryza sativa L.) as the staple food in China was found to be efficient in accumulating arsenic (As) due to cultivated in flooded paddy soil. Uptake and translocation of As in rice plant depended on the As species. In this work, rice plant samples including roots, straws and grains as well as rhizosphere soils were collected from paddy fields near Changsha, a mine impacted city in Southern China. The total As concentrations in the collected samples were observed in the descending order as root > soil > straw > grain...
May 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28531557/characterization-of-dissolved-organic-carbon-leached-from-a-woodchip-bioreactor
#19
Ibrahim Abusallout, Guanghui Hua
Woodchip bioreactors are increasingly being applied to remove nitrate from agricultural subsurface drainage. However, dissolved organic carbon (DOC) released from woodchips may negatively affect the aquatic ecosystems and drinking water supplies. The objective of this study was to evaluate the leaching characteristics, disinfection byproduct (DBP) formation potentials, and treatability of DOC derived from a laboratory woodchip bioreactor. Initial flush of woodchips resulted in the release of high organic content from woodchips...
May 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28531348/plant-derived-transcription-factors-for-orthologous-regulation-of-gene-expression-in-the-yeast-saccharomyces-cerevisiae
#20
Gita Naseri, Salma Balazadeh, Fabian Machens, Iman Kamranfar, Katrin Messerschmidt, Bernd Mueller-Roeber
Control of gene expression by transcription factors (TFs) is central in many synthetic biology projects where tailored expression of one or multiple genes is often needed. As TFs from evolutionary distant organisms are unlikely to affect gene expression in a host of choice, they represent excellent candidates for establishing orthogonal control systems. To establish orthogonal regulators for use in yeast (Saccharomyces cerevisiae), we chose TFs from the plant Arabidopsis thaliana. We established a library of 106 different combinations of chromosomally integrated TFs, activation domains (yeast GAL4 AD, herpes simplex virus VP64, and plant EDLL) and synthetic promoters harbouring cognate cis-regulatory motifs driving a yEGFP reporter...
May 22, 2017: ACS Synthetic Biology
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