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Jialing Tang, Xiaochang C Wang, Yisong Hu, Yunhui Pu, Jin Huang, Huu Hao Ngo, Yonggang Zeng, Yuyou Li
In this study, nitrogen removal using the lactic acid fermentation products from food waste and other external chemical carbon sources (sodium acetate, sodium lactate and starch) was investigated. Similar to sodium acetate and lactate, the lactic acid-enriched fermentation liquid from food waste (FLFW) exhibited a high denitrification rate (5.5 mg NO x -N/(g-VSS h)) and potential (0.16 g NO 3 - -N/g COD), and could achieve high NH 4 + -N and total nitrogen (TN) removal efficiencies during long-term operation...
February 8, 2018: Bioresource Technology
Athena Tapales, Ayana Douglas-Hall, Hannah Whitehead
OBJECTIVE: To explore the sexual and reproductive health (SRH) behaviors, health insurance coverage, and use of SRH services of women in the United States (U.S.) by nativity, disaggregated by race and ethnicity. STUDY DESIGN: We analyzed publicly-available and restricted data from the National Survey of Family Growth to assess differences and similarities between foreign-born and U.S.-born women, both overall and within Hispanic, non-Hispanic (NH) white, NH black, and NH Asian groups...
February 14, 2018: Contraception
Yunqin Cheng, Yunlu Chen, Juncheng Lu, Jianxin Nie, Yan Liu
The Fenton process is used as a tertiary treatment to remove organic pollutants from the effluent of bio-treated pharmaceutical wastewater (EBPW). The optimal and most appropriate Fenton conditions were determined by an orthogonal array test and single-factor experiments. The removal of chemical oxygen demand (COD) was influenced by the following factors in a descending order: H 2 O 2 /Fe(II) molar ratio > H 2 O 2 dosage > reaction time. Under the most appropriate Fenton conditions (H 2 O 2 /Fe(II) molar ratio of 1:1, H 2 O 2 dosage of 120 mg L -1 and reaction time of 10 min), the COD and dissolved organic carbon (DOC) were removed with efficiencies of 62 and 53%, respectively, which met the national discharge standard (GB 21903-2008) for the Lake Tai Basin, China...
February 16, 2018: Environmental Science and Pollution Research International
Shunquan Shi, Jiakuan Yang, Sha Liang, Mingyang Li, Quan Gan, Keke Xiao, Jingping Hu
Fe 3 O 4 @SiO 2 -NH 2 magnetic particles with core-shell structure were attached on carboxylated biochar derived from phoenix tree leaves to synthesize a novel magnetic biochar for removing Cr(VI) ions from acidic solutions. FSEM, FTEM, XRD characterizations of the synthesized magnetic biochar revealed that the Fe 3 O 4 @SiO 2 -NH 2 magnetic particles distributed uniformly on the surface or macrospores of carboxylated biochar by strong chemical bonding. The Cr(VI) ions adsorption capacity of magnetic biochar was 27...
February 13, 2018: Science of the Total Environment
Sahadevan Neethu, Sebastian Jose Midhun, M A Sunil, Soman Soumya, E K Radhakrishnan, Mathew Jyothis
The green synthesis of silver nanoparticles (AgNPs) using biological systems such as fungi has evolved to become an important area of nanobiotechnology. Herein, we report for the first time the light-induced extracellular synthesis of silver nanoparticles using algicolous endophytic fungus Penicillium polonicum ARA 10, isolated from the marine green alga Chetomorpha antennina. Parametric optimization, including the concentration of AgNO 3 , fungal biomass, ratio of cell filtrate and AgNO 3 , pH, reaction time and presence of light, was done for rapid AgNPs production...
February 7, 2018: Journal of Photochemistry and Photobiology. B, Biology
Lijin Huang, Man He, Beibei Chen, Bin Hu
Amino-decorated Zr-based magnetic Metal-Organic Frameworks composites (Zr-MFCs) were prepared by a facile and efficient strategy. The nano-sized Fe 3 O 4 @SiO 2 core (about 15 nm) was coated with a shell of Zr-MOFs (about 5 nm) by means of in-situ growth. And, Fe 3 O 4 @SiO 2 @UiO-66 and its amino derivatives (Fe 3 O 4 @SiO 2 @UiO-66-NH 2 and Fe 3 O 4 @SiO 2 @UiO-66-Urea) were successfully prepared by using different precursors. The obtained Zr-MFCs were demonstrated to be efficient adsorbents for metal ions/organic dyes removal from aqueous solution, with high adsorption capacity and fast adsorption kinetics...
February 7, 2018: Chemosphere
Huan Zhang, Xiaoyan Dong, Fufeng Liu, Jie Zheng, Yan Sun
Inhibition of amyloid β-protein (Aβ) aggregation is of significance for the potential treatment of Alzheimer's disease. We have herein conjugated heptapeptide Ac-LVFFARK-NH 2 (LK7) to β-cyclodextrin (βCyD) and studied the inhibitory effect of the LK7-βCyD conjugate on Aβ aggregation. The conjugation significantly improved the peptide solubility and suppressed the self-assembly propensity. This led to 30% increase of the binding affinity of LK7 for Aβ in the conjugate due to increased hydrophobic interactions...
February 11, 2018: Biophysical Chemistry
Zihao Zhang, Hao Cheng, Hao Chen, Kequan Chen, Xiuyang Lu, Pingkai Ouyang, Jie Fu
Modified H-type ZSM-5 (HZSM-5) catalysts were prepared using hexadecyl trimethyl ammonium bromide (CTAB) as mesopore templates to enhance the activity for the catalytic fast pyrolysis of rice straw for aromatics compounds. A certain quantity of CTAB added into the HZSM-5 (HZ) forming hierarchical structure exhibited an improvement in the yield of the aromatics and a decrease in the yield of coke in comparison with that of bare HZ. In contrast, excessive CTAB addition resulted in a decrease in aromatic yield and an increase in coke yield...
February 8, 2018: Bioresource Technology
Clive Ballard, Carol Banister, Zunera Khan, Jeffrey Cummings, George Demos, Bruce Coate, James M Youakim, Randall Owen, Srdjan Stankovic
BACKGROUND: Pimavanserin is a selective 5-HT 2A receptor inverse agonist and antagonist approved in the USA for the treatment of hallucinations and delusions associated with Parkinson's disease psychosis. No safe or effective pharmacological treatment is approved for psychosis in patients with Alzheimer's disease. Therefore, we aimed to evaluate the safety, tolerability, and efficacy of pimavanserin versus placebo in patients with Alzheimer's disease psychosis. METHODS: We did a phase 2, randomised, double-blind, placebo-controlled, single-centre (with multiple affiliated nursing home sites across the UK) study...
March 2018: Lancet Neurology
Tae Il Kim, Dong Hyun Lim, Kwang Soo Baek, Sun Sik Jang, Beom Young Park, Vijayakumar Mayakrishnan
The important platform polysaccharide N-acetylglucosamine (GlcNAc) has great potential to be used in the fields of food, cosmetics, agricultural, pharmaceutical, medicine and biotechnology. This GlcNAc is being produced by traditional methods of environment-unfriendly chemical digestion with strong acids. Therefore, researchers have been paying more attention to enzymatic hydrolysis process for the production of GlcNAc. Hence, in this study, we isolated novel chitinase (Escherichia fergusonii) and chitosanase (Chryseobacterium indologenes, Comamonas koreensis) producing strains from Korean native calves feces, and developed the potential of an eco-friendly microbial progression for GlcNAc production from swollen chitin and chitosan by enzymatic degradation...
February 13, 2018: International Journal of Biological Macromolecules
Yanke Wang, Dongdong Cai, Huixia Wu, Yu Fu, Yang Cao, Yingjian Zhang, Dongmei Wu, Qiwei Tian, Shiping Yang
Multifunctional nano-biomaterials with the integration of diagnostic and therapeutic functions have shown great promise in improving the efficacy of cancer therapy. Herein, a new nanoplatform based on functionalized Cu 3 BiS 3 nanoparticles (NPs) is fabricated for tumour-targeted combination phototherapy. The as-synthesized hydrophobic Cu 3 BiS 3 NPs are modified with DSPE-PEG/DSPE-PEG-NH 2 , followed by the conjugation of the photosensitizer chlorin e6 (Ce6) and the target ligand folic acid (FA). The introduced Ce6 can further form a chelate complex with Gd 3+ ...
February 16, 2018: Nanoscale
Cong Qin, Yonghai Liu, Yang Yu, Yiwei Fu, Hao Li, Wei Wang
Herein, 2-vinylpyridines as a new type of electron-poor system for the asymmetric cross Rauhut-Currier reaction are reported. 2-Vinylpyridines are chemo- and enantioselectively activated by a newly designed chiral phosphine catalyst. The new reaction provides a powerful synthetic tool for accessing structurally diverse, highly valued chiral pyridine building blocks in good yields and with high enantioselectivities. Preliminary mechanistic studies reveal that two NH protons in the catalyst are critical for the synergistic activation of the substrates and governing the stereoselectivity of this reaction...
February 16, 2018: Organic Letters
Josette Garnier, Antsiva Ramarson, Vincent Thieu, Julien Némery, Sylvain Théry, Gilles Billen, Alexandra Coynel
The Lot river, a major tributary of the downstream Garonne river, the largest river on the Northern side of the Pyrenees Mountains, was intensively studied in the 1970s. A pioneering program called "Lot Rivière Claire" provided a diagnosis of water quality at the scale of the whole watershed and proposed an ambitious program to manage nutrient pollution and eutrophication largely caused by urban wastewater releases. Later on, the implementation of European directives from 1991 to 2000 resulted in the nearly complete treatment of point sources of pollution in spite of a doubling of the basin's population...
February 15, 2018: Environmental Science and Pollution Research International
Ingrid M Weiss, Christina Muth, Robert Drumm, Helmut O K Kirchner
Background: The pathways of thermal instability of amino acids have been unknown. New mass spectrometric data allow unequivocal quantitative identification of the decomposition products. Results: Calorimetry, thermogravimetry and mass spectrometry were used to follow the thermal decomposition of the eight amino acids G, C, D, N, E, Q, R and H between 185 °C and 280 °C. Endothermic heats of decomposition between 72 and 151 kJ/mol are needed to form 12 to 70% volatile products...
2018: BMC Biophysics
Mohsen Sarikhani, Sneha Mishra, Perumal Arumugam Desingu, Chaithanya Kotyada, Donald Wolfgeher, Mahesh P Gupta, Mahavir Singh, Nagalingam R Sundaresan
c-Jun NH 2 -terminal kinases (JNKs) are responsive to stress stimuli and their activation regulate key cellular functions, including cell survival, growth, differentiation and aging. Previous studies demonstrate that activation of JNK requires dual phosphorylation by the mitogen-activated protein kinase kinases. However, other post-translational mechanisms involved in regulating the activity of JNK have been poorly understood. In this work, we studied the functional significance of reversible lysine acetylation in regulating the kinase activity of JNK...
February 15, 2018: Cell Death and Differentiation
Abu Ul Hassan Sarwar Rana, Seung-Bo Chang, Hyun-Seok Kim
We proffer NH4OH-oriented and pH-dependent growth of ZnO nanostructures via a microwaveassisted growth method. The fabrication of ZnO nanorods (ZNRs), nanoflowers (ZNFs), nanostars (ZNSs), and nanotetrapods (ZNTs) is presented. NH4OH was used as a mineralizer to change the solution pH for nanostructure growth, where temperature and other variables were fixed. Because of an efficient heat transfer and facile growth of nanostructures, a domestic microwave oven was used to facilitate the nanostructure growth in the span of just 10-15 min...
March 1, 2018: Journal of Nanoscience and Nanotechnology
Dongsheng Ji, Yang Cui, Liang Li, Jun He, Lili Wang, Hongliang Zhang, Wan Wang, Luxi Zhou, Willy Maenhaut, Tianxue Wen, Yuesi Wang
The Spring Festival (SF) is the most important holiday in China for family reunion and tourism. During the 2015 SF an intensive observation campaign of air quality was conducted to study the impact of the anthropogenic activities and the dynamic characteristics of the sources. During the study period, pollution episodes frequently occurred with 12days exceeding the Chinese Ambient Air Quality Standards for 24-h average PM 2.5 (75μg/m 3 ), even 8days with exceeding 150μg/m 3 . The daily maximum PM 2.5 concentration reached 350μg/m 3 while the hourly minimum visibility was <0...
February 12, 2018: Science of the Total Environment
L S F Pereira, M F Pedrotti, P Dalla Vecchia, J S F Pereira, E M M Flores
A simple and automated system based on combustion followed by a pyrohydrolysis reaction was proposed for further halogens determination. This system was applied for digestion of soils containing high (90%) and also low (10%) organic matter content for further halogens determination. The following parameters were evaluated: sample mass, use of microcrystalline cellulose and heating time. For analytes absorption, a diluted alkaline solution (6 mL of 25 mmol L -1 NH 4 OH) was used in all experiments. Up to 400 mg of soil with high organic matter content and 100 mg of soil with low organic matter content (mixed with 400 mg of cellulose) could be completely digested using the proposed system...
June 20, 2018: Analytica Chimica Acta
Reza Abazari, Ali Reza Mahjoub
A visible light-driven amine-functionalized Al-based MOF # @ y x Sm 2 O 3 -ZnO nanocomposite (NH 2 -MOF # @ y x Sm 2 O 3 -ZnO NCP) was synthesized as an effective photocatalyst for AMX degradation in the presence of ultrasound, in which # is MOF synthesis conditions from MOF I to MOF XII and x and y stand for the weight percentages of Sm 2 O 3 -to-ZnO and Sm 2 O 3 -ZnO-to-MOF, respectively. The β-lactam antibiotic AMX, which is widely used for treating Gram-positive and Gram-negative bacterial infections in both animals and humans, was employed as a model pollutant...
February 15, 2018: Inorganic Chemistry
Dan Zhao, Xiao-Hui Liu, Jin-Han Guo, Hua-Jin Xu, Yue Zhao, Yi Lu, Wei-Yin Sun
A combination of carbon dioxide (CO 2 ) capture and chemical fixation in a one-step process is attractive for chemists and environmentalists. In this work, by incorporating chelating multiamine sites to enhance the binding affinity toward CO 2 , two novel metal-organic frameworks (MOFs) [Zn 2 (L)(2,6-NDC) 2 (H 2 O)]·1.5DMF·2H 2 O (1) and [Cd 2 (L)(2,6-NDC) 2 ]·1.5DMF·2H 2 O (2) (L = N 1 -(4-(1H-1,2,4-triazole-1-yl)benzyl)-N 1 -(2-aminoethyl)ethane-1,2-diamine, 2,6-H 2 NDC = 2,6-naphthalenedicarboxylic acid, DMF = N,N-dimethylformamide) were achieved under solvothermal conditions...
February 15, 2018: Inorganic Chemistry
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