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https://www.readbyqxmd.com/read/28822293/synthesis-of-hexagonal-mesoporous-mgal-ldh-nanoplatelets-adsorbent-for-the-effective-adsorption-of-brilliant-yellow
#1
Reza Pourfaraj, Seyed Jamilaldin Fatemi, Sayed Yahya Kazemi, Pourya Biparva
Hexagonal mesoporous MgAl layered double hydroxide (LDH) was synthesized through a simple hydrothermal method and was employed without calcination as adsorbent in the removal of the direct anionic azo dye, Brilliant Yellow (BY). The adsorbent was characterized by XRD, FT-IR, SEM and BET surface area. Hexagonal platelets of MgAl LDH were fabricated with nanometric building blocks. Batch experiments were carried out for study effects of contact time, amount of adsorbent, solution pH and solution temperature on the removal efficiency of BY...
July 29, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28822290/freeze-dryable-lipid-vesicles-with-size-tunability-and-high-encapsulation-efficiency-prepared-by-the-multiple-emulsification-solvent-evaporation-method
#2
Akihiko Suzuki, Takashi Kuroiwa, Kaname Horikoshi, Akihiko Kanazawa, Sosaku Ichikawa
We investigated the extent of potential applicability of our recently developed method for preparing lipid vesicles [T. Kuroiwa et al., J. Am. Oil Chem. Soc., 93 (2016) 421], designated as the multiple emulsification-solvent evaporation method, with the intention of controlling the vesicle diameter and achieving high entrapment efficiency for water-soluble compounds. Using this method, the diameter of lipid vesicles could be varied by selecting the methods for preparing the primary water-in-oil emulsion, which contained water droplets as templates for the internal water phases of lipid vesicles...
August 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28822287/blue-light-induced-free-radicals-from-riboflavin-in-degradation-of-crystal-violet-by-microbial-viability-evaluation
#3
Ji-Yuan Liang, Jeu-Ming P Yuann, Zong-Jhe Hsie, Shiuh-Tsuen Huang, Chiing-Chang Chen
Crystal violet (CV) is applied in daily use mainly as a commercial dye and antimicrobial agent. Waste water containing CV may affect aquatic ecosystems. Riboflavin, also known as vitamin B2, is non-toxic and an essential vitamin required for the functions of the human body. Riboflavin is photosensitive to UV and visible light in terms of generating reactive oxygen species. This study investigated the potential application of blue light on riboflavin, so as to come up with an effective way of degrading CV during its treatment...
August 12, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28821778/electrochemical-removal-of-stains-from-paper-cultural-relics-based-on-the-electrode-system-of-conductive-composite-hydrogel-and-pbo2
#4
Xingtang Liang, Lizhen Zheng, Shirong Li, Xiaoyu Fan, Shukun Shen, Daodao Hu
Constructing methods for cleaning stains on paper artworks that meet the requirements of preservation of cultural relics are still challenging. In response to this problem, a novel electrochemical cleaning method and the preparation of corresponding electrodes were proposed. For this purpose, the conductive graphene (rGO)/polyacryamide (PAM)/montmorillonite (MMT) composite hydrogel as cathode and PbO2-based material as anode were prepared and characterized. The electrochemical cleaning efficiencies of real sample and mimicking paper artifacts were evaluated, and the effects of the electrochemical cleaning on paper itself were detected...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821139/charge-functionalized-and-mechanically-durable-composite-cryogels-from-q-nfc-and-cs-for-highly-selective-removal-of-anionic-dyes
#5
Yufei Chen, Jing Ru, Biyao Geng, Haiying Wang, Congcong Tong, Chungui Du, Shengchun Wu, Hongzhi Liu
A composite cryogel was prepared from quaternized nanofibrillated cellulose (Q-NFC) and chitosan (CS) through a combination of freeze-drying and cross-linking with epichlorohydrin. The specific surface area of the composite cryogel was approximately two times that of Q-NFC cryogel. And the composite cryogel exhibited superior adsorption properties of anionic dyes than either the Q-NFC or CS cryogel controls. The adsorption isotherm well fitted the Langmuir model with the maximum theoretical adsorption capacity up to 473...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821094/decoration-of-open-pore-network-in-polyvinylidene-fluoride-mwcnts-with-chitosan-for-the-removal-of-reactive-orange-16-dye
#6
Maria Wasim, Sadia Sagar, Aneela Sabir, Muhammad Shafiq, Tahir Jamil
Inspired by the hydrophilic, biocompatible, adsorbent properties of chitosan. A simple, adaptable, green synthesis method was developed to prepare a thin film composite membranes using chitosan as a pore decorating material for the removal of anionic dye-Reactive orange 16 (RO-16). The hydrophilic chitosan was used to fill up the porous hydrophobic PVDF substrate, modified by MWCNTs. The dye rejection was carried out through the formation of a strong electrostatic interaction between the cationic group of chitosan surface and the anionic group of RO-16 dye...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821090/dyeing-and-characterization-of-regenerated-cellulose-nanofibers-with-vat-dyes
#7
Muzamil Khatri, Farooq Ahmed, Irfan Shaikh, Duy-Nam Phan, Qamar Khan, Zeeshan Khatri, Hoik Lee, Ick Soo Kim
Recent advancement in dyeing of nanofibers has been accelerated to improve their aesthetic properties, however, achieving good color fastness remains a challenge. Therefore, we attempt to improve the color fastness properties nanofibers. Vat dyes are known for better color fastness and their application on nanofibers has not been investigated to date. Herein, we report dyeing of regenerated cellulose nanofibers (RCNF) that were produced from precursor of cellulose acetate (CA) followed by deacetylation process...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821084/green-synthesis-of-oriented-xanthan-gum-graphene-oxide-hybrid-aerogels-for-water-purification
#8
Shunli Liu, Fang Yao, Olayinka Oderinde, Zhihong Zhang, Guodong Fu
Three-dimensional xanthan gum (XG)/graphene oxide (GO) hybrid aerogels were fabricated by ice crystal templating without using chemical modifiers. The hybrid aerogels were prepared by the stirring of xanthan gum-graphene oxide hybrid solution, followed by freezing at low temperature and finally by freeze-drying. The whole preparation could be completed within 12h without producing any contamination and thus considered a fast, simple, economical, and green method for aerogel fabrication. XG/GO hybrid aerogels possessed different hierarchical pore structures because of various freezing temperatures...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821074/dope-dyeing-of-lyocell-fiber-with-nmmo-based-carbon-black-dispersion
#9
Liping Zhang, Weize Sun, Dan Xu, Min Li, Christiana Agbo, Shaohai Fu
NMMO-based carbon black (CB) dispersion was prepared and its properties as well as its compatibility with lyocell spinning solution were further investigated. Modified lignosulfonate (SP) was verified to be the preeminent dispersant for the preparation of NMMO-based CB dispersion with mass ratio of SP to CB 20% and water to NMMO 13%. The compatibility of NMMO-based CB dispersion with lyocell spinning solution had close relation with dispersant structure and CB content. Mass ratio of CB to cellulose affects the mechanical properties, color strength and crystallinity of lyocell fiber...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821052/industrial-scale-salt-free-reactive-dyeing-of-cationized-cotton-fabric-with-different-reactive-dye-chemistry
#10
Arivithamani Nallathambi, Giri Dev Venkateshwarapuram Rengaswami
Dyeing of knitted cotton goods in the industry has been mostly with reactive dyes. Handling of salt laden coloured effluent arising out of dyeing process is one of the prime concerns of the industry. Cationization of cotton is one of the effective alternative to overcome the above problem. But for cationization to be successful at industrial scale it has to be carried out by exhaust process and should be adoptable for the various dye chemistries currently practiced in the industry. Hence, in the present work, industrial level exhaust method of cationization process was carried out with concentration of 40g/L and 80g/L...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821050/clean-approach-to-synthesis-of-graphene-like-cufe2o4-polysaccharide-resin-nanohybrid-bifunctional-compound-for-dye-adsorption-and-bacterial-capturing
#11
Mostafa Hossein Beyki, Sarina Ehteshamzadeh Ganjbakhsh, Sara Minaeian, Farzaneh Shemirani
Focus of this research is on employment of a green route to prepare magnetic CuFe2O4@polysaccharide resin for environmental remediation purpose. The method is including solvent free solid state synthesis of copper ferrite nanoparticles by combustion route using cellulose as fuel. Then polysaccharide resin as well as its magnetic composite was prepared by using glucose, citric acid and copper ferrite as solid raw materials. Characterization study using FESEM and TEM images showed that as synthesized resin possesses graphene like structure as ferrite nanoparticles are dispersed in the matrice of resin...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820972/fluorescent-pseudorotaxanes-of-a-quinodicarbocyanine-dye-with-gamma-cyclodextrin
#12
Olivia M Bernstein, Tiffany E McGee, Lisa E Silzel, John W Silzel
Spectrophotometric titration of buffered solutions of gamma cyclodextrin (γCD) and 1,1'-diethyl,2,2'-dicarbocyanine (DDI) demonstrates extension of the known 1:2 host:guest complex to form a previously unreported 2:2 complex near the γCD solubility limit. Though DDI is predominantly hosted as a non-fluorescent H-aggregate, both complexes exist in respective equilibria with two secondary complexes hosting unaggregated DDI as 1:1 and 2:1 complexes. The 2:1 complex exhibits significant fluorescence emission, with a quantum yield six times that of DDI in organic solvents, but ten times lower than that of an analogous indodicarbocyanine...
August 3, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28820941/a-photoactivatable-probe-for-super-resolution-imaging-of-enzymatic-activity-in-live-cells
#13
Elias A Halabi, Zacharias Thiel, Nils Trapp, Dorothea Pinotsi, Pablo Rivera-Fuentes
A dual-activatable, fluorogenic probe was developed to sense esterase activity with single-molecule resolution. Without enzymatic pre-activation, the diazoindanone-based probe has an electron poor core and, upon irradiation, undergoes Wolff rearrangement to give a ring-expanded xanthene core that is non-emissive. If the probe is pre-activated by carboxylesterases, the tricyclic core becomes electron-rich and the photoinduced Wolff rearrangement produces a highly emissive rhodol dye. Live-cell and solution studies confirmed the selectivity of the probe and revealed that the photoactivated dye does not diffuse away from the original location of activation because the intermediate ketene forms a covalent bond with surrounding macromolecules...
August 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28820042/biodegradation-of-remazol-brilliant-blue-r-using-isolated-bacterial-culture-staphylococcus-sp-k2204
#14
Velayutham Karthikeyan, Madhava Anil Kumar, Pushparaj Mohanapriya, Thanarasu Amudha, Devaraj Thiruselvi, Periyasamy Karthik, Subramanian Sivanesan
Staphylococcus sp. K2204, a bacterial isolate, was employed in this work to decolorize Remazol Brilliant Blue R (RBBR), which belongs to the anthraquinone class of textile dye. Staphylococcus sp. K2204 biodegraded 100 mg/L RBBR at 37°C, under static condition with the help of extracellular laccase and peroxidases. The products of RBBR degradation were characterized using analytical tools including mass spectral technique. The phytotoxicity tests evaluated the toxicity of RBBR and the products of biodegradation...
August 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28819980/superior-fluorogen-activating-protein-probes-based-on-3-indole-malachite-green
#15
Qingyang Zhang, Qinghua Wang, Ying Sun, Limin Zuo, Verena Fetz, Hai-Yu Hu
A series of novel fluorogenic dyes based on 3-indole-Malachite Green, MGs 5-7, have been developed that are dark in solution but highly fluorescent when bound to the cognate reporter, fluorogen-activating protein (FAP). Significantly, the new MGs 5-7 probes are superior to the traditional MG 1 with high fluorescent efficiency and low toxicity to cells while maintaining the large "pseudo-Stokes" shifts (Δλ = λex - λem) and the malachite green (MG)-like fluorescence OFF-ON switching mechanism in both live mammalian cells and bacterial cells when bound to FAP...
August 18, 2017: Organic Letters
https://www.readbyqxmd.com/read/28819942/study-of-the-relationship-between-ages-and-oxidative-stress-damage-to-trophoblast-cell-mitochondria
#16
Lingling Jiang, Jianying Yan, Lixiang Wu
OBJECTIVES: To study the influence of AGEs on placental trophoblast mitochondria oxidative stress, and to explore the possible pathogenesis which may participate in pre-eclampsia. MATERIAL AND METHODS: Human trophoblast cells from early pregnancy were cultured by an enzyme-digestion method. When trophoblast cells reached approximately 70-80% after passages, they were incubated with pre-eclampsia serum for 24 hours. A fluorescent dye assay was applied to measure the mitochondrial membrane potential; ELISA was used to measure the activity of the mitochondrial permeability transition pore...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28819697/mechanistic-understanding-of-crystal-violet-dye-sorption-by-woody-biochar-implications-for-wastewater-treatment
#17
Awanthi Wathukarage, Indika Herath, M C M Iqbal, Meththika Vithanage
Dye-based industries, particularly small and medium scale, discharge their effluents into waterways without treatment due to cost considerations. We investigated the use of biochars produced from the woody tree Gliricidia sepium at 300 °C (GBC300) and 500 °C (GBC500) in the laboratory and at 700 °C from a dendro bioenergy industry (GBC700), to evaluate their potential for sorption of crystal violet (CV) dye. Experiments were conducted to assess the effect of pH reaction time and CV loading on the adsorption process...
August 17, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28819641/in-search-of-multipath-interference-using-large-molecules
#18
Joseph P Cotter, Christian Brand, Christian Knobloch, Yigal Lilach, Ori Cheshnovsky, Markus Arndt
The superposition principle is fundamental to the quantum description of both light and matter. Recently, a number of experiments have sought to directly test this principle using coherent light, single photons, and nuclear spin states. We extend these experiments to massive particles for the first time. We compare the interference patterns arising from a beam of large dye molecules diffracting at single, double, and triple slit material masks to place limits on any high-order, or multipath, contributions. We observe an upper bound of less than one particle in a hundred deviating from the expectations of quantum mechanics over a broad range of transverse momenta and de Broglie wavelength...
August 2017: Science Advances
https://www.readbyqxmd.com/read/28819451/a-high-affinity-repebody-for-molecular-imaging-of-egfr-expressing-malignant-tumors
#19
Misun Yun, Dong-Yeon Kim, Joong-Jae Lee, Hyeon-Sik Kim, Hyung-Seok Kim, Ayoung Pyo, Yiseul Ryu, Tae-Yoon Kim, Jin Hai Zheng, Su Woong Yoo, Hoon Hyun, Gyungseok Oh, Jaeho Jeong, Myeongju Moon, Jung-Hyun Min, Seong Young Kwon, Jung Young Kim, Euiheon Chung, Yeongjin Hong, Wansik Lee, Hak-Sung Kim, Jung-Joon Min
The accurate detection of disease-related biomarkers is crucial for the early diagnosis and management of disease in personalized medicine. Here, we present a molecular imaging of human epidermal growth factor receptor (EGFR)-expressing malignant tumors using an EGFR-specific repebody composed of leucine-rich repeat (LRR) modules. The repebody was labeled with either a fluorescent dye or radioisotope, and used for imaging of EGFR-expressing malignant tumors using an optical method and positron emission tomography...
2017: Theranostics
https://www.readbyqxmd.com/read/28819444/association-of-hla-drb1-hla-dqb1-polymorphisms-with-hpv-16-e6-variants-among-young-cervical-cancer-patients-in-china
#20
Yan Hu, Jin-Ze Wu, Hua Zhu, Sheng-Hui Zhang, Yan-Ying Zhu, Yi-Yao Wu, Ci-Xia Shuai
Potential correlation of human papillomavirus (HPV) 16 E6 variants and human leukocyte antigen (HLA) class II polymorphisms has been suggested in patients with cervical cancer, so far little information is available about the possible interaction between E6 variants and HLA class II variability during the obviously accelerated progression to cervical cancer in young women. In this study, we aimed to explore the association between the HPV16 E6 variants and HLA-DRB1, DQB1 alleles in a Chinese young cervical cancer population...
2017: Journal of Cancer
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