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https://www.readbyqxmd.com/read/29667398/biomimetic-multilayer-nanofibrous-membranes-with-elaborated-superwettability-for-effective-purification-of-emulsified-oily-wastewater
#1
Jianlong Ge, Qing Jin, Dingding Zong, Jianyong Yu, Bin Ding
Creating a porous membrane to effectively separate the emulsified oil-in-water emulsions with energy-saving property is highly desired but remains a challenge. Herein, a multilayer nanofibrous membrane was developed with the inspiration of the natural architectures of earth for gravity driving water purification. As a result, the obtained biomimetic multilayer nanofibrous membranes exhibited three individual layers with designed functions, those were the inorganic nanofibrous layer to block the seriously intrusion of oil to prevent the destructive fouling of the polymeric matrix; the submicron porous layer with designed honeycomb-like cavities to catch the smaller oil droplets and ensures a satisfactory water permeability; the high porous fibrous substrate with larger pore size provided a template support and allows water to pass through quickly...
April 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29665569/simultaneous-removal-of-polycyclic-aromatic-hydrocarbon-and-heavy-metals-from-an-artificial-clayey-soil-by-enhanced-electrokinetic-method
#2
Nima Saberi, Mohammad Aghababaei, Mojtaba Ostovar, Hamid Mehrnahad
Contamination of soil by a mixture of organic and non-organic pollutants due to various anthropogenic and natural causes is one of the most important issues in soil pollution. Generating a single layer of soil is a time-consuming process, and soil is a significant part of the environmental cycle; thus, protection and remediation of soil are of paramount importance. In this study, phenanthrene (PHE) as a representative for polycyclic aromatic hydrocarbon and lead (Pb), zinc (Zn), and nickel (Ni) as heavy metal pollutants were used because of their synergistic effects and abundant presence in soil...
April 14, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29658699/facile-synthesis-of-a-pentiptycene-based-highly-microporous-organic-polymer-for-gas-storage-and-water-treatment
#3
Shuangjiang Luo, Qinnan Zhang, Yizhou Zhang, Kevin P Weaver, William A Phillip, Ruilan Guo
Rigid H-shaped pentiptycene units, with an intrinsic hierarchical structure, were employed to fabricate a highly microporous organic polymer sorbent via Friedel-Crafts reaction/polymerization. The obtained microporous polymer exhibits good thermal stability, a high BET surface area of 1604 m2 g-1, outstanding CO2, H2 and CH4 storage capacities, as well as good adsorption selectivities for the separation of CO2/N2 and CO2/CH4 gas pairs. The CO2 uptake reached values as high as 5.00 mmol g-1 (1.0 bar and 273 K), which, along with high adsorption selectivity values (e...
April 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29656358/a-comparative-study-on-defluoridation-capabilities-of-biosorbents-isotherm-kinetics-thermodynamics-cost-estimation-and-eco-toxicological-study
#4
Shraboni Mukherjee, Sujata Dutta, Sourjya Ray, Gopinath Halder
The present study aims towards fluoride remediation from synthetic water using steam-activated carbon of Aegle marmelos (bael shell/wood apple) (BAC) and Parthenium hysterophorus (PHAC) according to batch sorption techniques. The impact of different parametric conditions viz. initial fluoride concentration (4-12 mg/L), time (0-5 h), temperature (293.15-333.15 K), adsorbent dosage (4-14 g/L), pH (4-9), and RPM (150-350) were considered for both the adsorbents. Maximum defluoridation of 89% was achieved by BAC at a concentration of 10 mg/L, adsorbent dose 6 g/L, pH 5, temperature 313...
April 14, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29649659/co-mn-layered-double-hydroxide-as-an-effective-heterogeneous-catalyst-for-degradation-of-organic-dyes-by-activation-of-peroxymonosulfate
#5
Xiufei Zhao, Chenggang Niu, Lei Zhang, Hai Guo, Xiaoju Wen, Chao Liang, Guangming Zeng
In this study, Co-Mn layered double hydroxide (Co-Mn LDH) was synthesized, characterized, and tested as heterogeneous catalyst to activate peroxymonosulfate (PMS) for degradation of organic dyes. The results of characterization showed that Co-Mn LDH had high purity, uniform morphology and large specific surface area (49.9379 m2 /g). The degradation experiments demonstrated that five different dyes with the concentration of 50 mg/L could be decomposed completely within 240 s using only 0.025 g/L of Co-Mn LDH and 0...
April 6, 2018: Chemosphere
https://www.readbyqxmd.com/read/29648601/compensating-injury-to-autonomy-in-english-negligence-law-inconsistent-recognition
#6
Tsachi Keren-Paz
Recently in Shaw v Kovac, the Court of Appeal seemed to have rejected a standalone injury to autonomy (ITA) as actionable in negligence, in an informed consent case. In this article, I argue that Shaw can be explained away, and that English law recognizes ITA as actionable in a series of cases, some of which-Bhamra, Tracey, and Yearworth-were not hitherto understood to do so. However, the under-theorization in the cases leads to inconsistencies. Like cases (Rees/Yearworth; Chester/Tracey) are not treated alike; ITA is misunderstood to be about 'religious offence' (Bhamra) and property loss (Yearworth) and worse still, the more serious type 2 ITA (Rees) gives rise to a weaker remedy (of exceptional nature aside) than the less serious type 1 injury (Chester)...
April 10, 2018: Medical Law Review
https://www.readbyqxmd.com/read/29648459/implementation-of-the-integrated-approach-in-different-types-of-exposure-scenarios
#7
D Copplestone, G Hirth, M Johansen, E Lazo, J Takala, K Sakai, T Yankovich
The International Commission on Radiological Protection (ICRP) recognises three types of exposure situations: planned, existing, and emergency. In all three situations, the release of radionuclides into the natural environment leads to exposures of non-human biota, as well as the potential for exposures of the public. This paper describes how the key principles of the ICRP system of radiological protection apply to non-human biota and members of the public in each of these exposure situations. Current work in this area within ICRP Task Group 105 is highlighted...
January 1, 2018: Annals of the ICRP
https://www.readbyqxmd.com/read/29626581/the-use-of-plants-containing-genotoxic-carcinogens-as-foods-and-medicine
#8
Gerhard Prinsloo, Noluyolo Nogemane, Renee Street
In many developing countries, populations rely on traditional medicine for primary health care, which have infiltrated commercial markets globally as natural remedies are generally regarded as safe. Traditional and natural remedies are adapted and expanded in commercial products and product ranges to provide alternatives for various diseases and illnesses. These products resemble very little of the traditional use and application and adverse effects are observed in several cases. Some of the herbs and botanical formulations therefore, are not as safe as are commonly contemplated...
April 4, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29625223/antioxidant-and-hepatoprotective-effects-of-intracellular-mycelium-polysaccharides-from-pleurotus-geesteranus-against-alcoholic-liver-diseases
#9
Xinling Song, Qiang Shen, Min Liu, Chen Zhang, Lan Zhang, Zhenzhen Ren, Wenshuai Wang, Yuhan Dong, Xiuxiu Wang, Jianjun Zhang, Le Jia
In the present study, we investigated the antioxidant and hepatoprotective effects of intracellular mycelium polysaccharides from Pleurotus geesteranus (IMPP) to address acute alcoholic liver diseases (ALD). Animal studies have demonstrated that the hepatic parameters of CYP2E1, MPO, TC, ALT, AST and ALP, HDLC, LDL-C and VLDL-C were improved; the inflammatory factor levels, including TNF-α, IL-1β and IL-6, were decreased; the hepatic ADH and ALDH activities were inhibited; the activities of the antioxidant enzymes SOD, GSH-Px, CAT and T-AOC were enhanced; and the MDA and LPO contents were reduced by IMPP treatment...
April 3, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29621129/plants-and-surgery-the-protective-effects-of-thymoquinone-on-hepatic-injury-a-systematic-review-of-in-vivo-studies
#10
REVIEW
Aysun Tekbas, Jutta Huebner, Utz Settmacher, Uta Dahmen
Multimodal treatment concepts including liver transplantation for hepatocellular carcinoma (HCC), extended resection methods and neoadjuvant chemotherapy for colorectal liver metastasis significantly improve patients’ outcome. However, surgery-induced hepatic ischemia-reperfusion injury (IRI) and chemotherapy-associated hepatotoxicity result in hepatocellular damage and compromised liver function. Activation of common key pathways in ischemic liver and hepatotoxic injury results in oxidative stress, inflammatory responses and apoptosis causing organ damage...
April 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29616211/granulated-bog-iron-ores-as-sorbents-in-passive-bio-remediation-systems-for-arsenic-removal
#11
Klaudia Debiec, Grzegorz Rzepa, Tomasz Bajda, Witold Uhrynowski, Aleksandra Sklodowska, Jan Krzysztoforski, Lukasz Drewniak
The main element of PbRS (passive (bio)remediation systems) are sorbents, which act as natural filters retaining heavy metals and carriers of microorganisms involved in water treatment. Thus, the effectiveness of PbRS is determined by the quality of the (ad)sorbents, which should be stable under various environmental conditions, have a wide range of applications and be non-toxic to (micro)organisms used in these systems. Our previous studies showed that bog iron ores (BIOs) meet these requirements. However, further investigation of the physical and chemical parameters of BIOs under environmental conditions is required before their large-scale application in PbRS...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29609114/mechanism-on-emulsified-vegetable-oil-stimulating-nitrobenzene-degradation-coupled-with-dissimilatory-iron-reduction-in-aquifer-media
#12
Zifang Chi, Jiansen Lei, Linjie Ding, Jun Dong
Microbial dissimilatory iron reduction could remediate reducible pollutants in groundwater, such as nitrobenzene (NB). But the natural attenuation rate in aquifer is limited. To stimulate this process, emulsified vegetable oil (EVO) was injected as a remediation agent. The mechanism of this process was studied. Results showed that the addition of EVO made iron easier used by microorganisms and thus promoted dissimilatory iron reduction. The readily used Fe(III) served as electron acceptor and was reduced to Fe(II)...
March 28, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29608058/structural-incorporation-of-manganese-into-goethite-and-its-enhancement-of-pb-ii-adsorption
#13
Huan Liu, Xiancai Lu, Meng Li, Lijuan Zhang, Chao Pan, Juan Li, Rui Zhang, Wanli Xiang
Natural goethite (a-FeOOH) commonly accommodates various metal elements by substituting for Fe, which greatly alters the surface reactivity of goethite. This study discloses the enhancement of Mn-substitution for the Pb2+ adsorption capacity of goethite. The incorporated Mn in the synthesized goethite presents as Mn(III) and causes a slight decrease in the a and c of the unit cell parameters and an observable increase in the b direction due to the Jahn-Teller effect of the Mn(III)O6 octahedra. With the Mn content increasing, the particle size decreases gradually, and the surface clearly becomes roughened...
April 2, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29603904/the-chromosome-18-clinical-resource-center
#14
Jannine D Cody, Minire Hasi-Zogaj, Patricia Heard, Annice Hill, David Rupert, Courtney Sebold, Bridgette Soileau, Daniel E Hale
BACKGROUND: The Chromosome 18 Clinical Research Center has created a pediatrician-friendly virtual resource center for managing patients with chromosome 18 abnormalities. To date, children with rare chromosome abnormalities have been cared for either symptomatically or palliatively as a reaction to the presenting medical problems. As we enter an era of genomic-informed medicine, we can provide children, even those with individually unique chromosome abnormalities, with proactive medical care and management based on the most contemporary data on their specific genomic change...
March 30, 2018: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/29597108/biological-approaches-to-tackle-heavy-metal-pollution-a-survey-of-literature
#15
REVIEW
Jaya Mary Jacob, Chinnannan Karthik, Rijuta Ganesh Saratale, Smita S Kumar, Desika Prabakar, K Kadirvelu, Arivalagan Pugazhendhi
Pollution by heavy metals has been identified as a global threat since the inception of industrial revolution. Heavy metal contamination induces serious health and environmental hazards due to its toxic nature. Remediation of heavy metals by conventional methods is uneconomical and generates a large quantity of secondary wastes. On the other hand, biological agents such as plants, microorganisms etc. offer easy and eco-friendly ways for metal removal; hence, considered as efficient and alternative tools for metal removal...
March 26, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29595164/in-situ-remediation-of-hexavalent-chromium-contaminated-soil-by-cmc-stabilized-nanoscale-zero-valent-iron-composited-with-biochar
#16
Runyuan Zhang, Nuanqin Zhang, Zhanqiang Fang
In this study, the remediation experiments were performed outdoors in natural conditions. Carboxymethyl cellulose (CMC)-stabilized nanoscale zero-valent iron (CMC-nZVI), biochar (BC) and CMC-stabilized nanoscale zero-valent iron composited with biochar (CMC-nZVI/BC) were synthesized and investigated for their effect on the in situ remediation of hexavalent chromium [Cr(VI)] contaminated soil and the concentration of available iron was tested after the remediation, compared with the untreated soil. The results of toxicity characteristic leaching procedure (TCLP) test showed that CMC-nZVI and CMC-nZVI/BC used as remediation materials could obviously improve the remediation rate of Cr contaminated soil and when the ratio of CMC-nZVI to Fe0 was 2...
March 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29592809/exploring-the-potential-of-black-tea-based-flavonoids-against-hyperlipidemia-related-disorders
#17
Ali Imran, Masood Sadiq Butt, Muhammad Sajid Arshad, Muhammad Umair Arshad, Farhan Saeed, Muhammad Sohaib, Rizwan Munir
BACKGROUND: In recent decade, Hyperlipidemia related disorders like obesity, hypercholesterolemia and diabetes are considered as the leading killers for mankind. Fundamental nexus between nutrition and health diverting the consumers focus towards plant based natural products as a remedy against various metabolic syndrome. Considering this, present study was conducted to explicate the role of black tea polyphenols such as Theaflavins and thearubigins therapeutic potential to tackle targeted maladies especially oxidative stress related disorders like hypercholesterolemia and diabetes...
March 27, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29580698/application-of-hram-screening-and-lc-ms-ms-confirmation-of-active-pharmaceutical-ingredient-in-natural-herbal-supplements
#18
Jennifer P Pascali, Paolo Fais, Fabio Vaiano, Elisabetta Bertol
The growing market of herbal remedies worldwide could pose severe problems to consumers' health due to the possible presence of potentially harmful, undeclared synthetic substances or analogues of prescription drugs. The present work shows a simple but effective approach to unequivocally identify synthetic anorectic compounds in allegedly 'natural' herbal extracts, by exploiting liquid chromatography/time of flight (Q-TOF LC/MS) technology coupled to liquid chromatography/triple quadrupole (LC-MS/MS) confirmation and quantitation...
March 16, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29580105/herbal-remedies-a-boon-for-diabetic-neuropathy
#19
Reshu Tiwari, Mohd Haris Siddiqui, Tarique Mahmood, Paramdeep Bagga, Farogh Ahsan, Arshiya Shamim
Diabetic neuropathy is a chronic complication of diabetes mellitus affecting about 50% of patients. Its symptoms include decreased motility and severe pain in peripheral parts. The pathogenesis involved is an abnormality in blood vessels that supply the peripheral nerves, metabolic disorders such as myo-inositol depletion, and increased nonenzymatic glycation. Moreover, oxidative stress in neurons results in activation of multiple biochemical pathways, which results in the generation of free radicals. Apart from available marketed formulations, extensive research is being carried out on herbal-based natural products to control hyperglycemia and its associated complications...
March 26, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29574199/successful-aerobic-bioremediation-of-groundwater-contaminated-with-higher-chlorinated-phenols-by-indigenous-degrader-bacteria
#20
Anu Mikkonen, Kati Yläranta, Marja Tiirola, Lara Ambrosio Leal Dutra, Pauliina Salmi, Martin Romantschuk, Shelley Copley, Jukka Ikäheimo, Aki Sinkkonen
The xenobiotic priority pollutant pentachlorophenol has been used as a timber preservative in a polychlorophenol bulk synthesis product containing also tetrachlorophenol and trichlorophenol. Highly soluble chlorophenol salts have leaked into groundwater, causing severe contamination of large aquifers. Natural attenuation of higher-chlorinated phenols (HCPs: pentachlorophenol + tetrachlorophenol) at historically polluted sites has been inefficient, but a 4-year full scale in situ biostimulation of a chlorophenol-contaminated aquifer by circulation and re-infiltration of aerated groundwater was remarkably successful: pentachlorophenol decreased from 400 μg L-1 to <1 μg L-1 and tetrachlorophenols from 4000 μg L-1 to <10 μg L-1 ...
March 13, 2018: Water Research
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