PubAg

Main content area

You searched for: Subject "bleaching agents" Remove constraint Subject: "bleaching agents" Publication Year 2019 Remove constraint Publication Year: 2019 Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
Start Over

Search

55  Search Results

« Previous | 1 - 20 of 55 |
Number of results to display per page

Search Results

1. Exciton Localization and Radiative Lifetimes in CdSe Nanoplatelets

Author:
Morgan, David P.; Kelley, David F.
Source:
Journal of physical chemistry 2019 v.123 no.30 pp. 18665-18675
ISSN:
1932-7455
Subject:
bleaching agents,   etc   ; absorbance; absorption; models; quantum dots; spectroscopy; thiols;     Show all 7 Subjects
Abstract:
... The spatial extents of CdSe nanoplatelet (NPL) excitons are investigated using transient absorption (TA) spectroscopy. The bleach magnitudes of a series of NPLs with varying lateral dimensions are compared with a quantum dot (QD) standard, allowing the relative magnitude of the heavy hole (HH) bleach to be determined as a function of size. The relative bleach of the HH absorbance decreases with in ...
DOI:
10.1021/acs.jpcc.9b04639

2. Ultrafast Electron Dynamics in Thiolate-Protected Plasmonic Gold Clusters: Size and Ligand Effect

Author:
Shabaninezhad, Masoud; Abuhagr, Abubkr; Sakthivel, Naga Arjun; Kumara, Chanaka; Dass, Amala; Kwak, Kyuju; Pyo, Kyunglim; Lee, Dongil; Ramakrishna, Guda
Source:
Journal of physical chemistry 2019 v.123 no.21 pp. 13344-13353
ISSN:
1932-7455
Subject:
bleaching agents,   etc   ; gold; hexane; ligands; models; nanogold; spectroscopy; thiols;     Show all 8 Subjects
Abstract:
... The influence of passivating ligands on electron–phonon relaxation dynamics of the smallest-sized gold clusters was studied using ultrafast transient absorption spectroscopy and theoretical modeling. The electron dynamics in Au₂₇₉, Au₃₂₉, and Au₃₂₉ passivated with 4-tert-butylbenzene thiol (TBBT), phenylethane thiol (SC₂Ph), and hexane thiol (SC₆), respectively, were investigated. These clusters w ...
DOI:
10.1021/acs.jpcc.9b01739

3. Reaction of thieno[2,3-b]pyridines with sodium hypochlorite: An unusual and stereoselective one-pot approach to dimeric pyrrolo[2′,3′:4,5]thieno[2,3-b]pyridines

Author:
Stroganova, Tatyana A.; Vasilin, Vladimir K.; Dotsenko, Victor V.; Aksenov, Nikolai A.; Krapivin, Gennady D.
Source:
Tetrahedron letters 2019
ISSN:
0040-4039
Subject:
bleaching agents,   etc   ; chemical structure; oxidation; pyridines; sodium hypochlorite; stereoselectivity;     Show all 6 Subjects
Abstract:
... The oxidation of 3-aminothieno[2,3-b]pyridine-2-carboxamides with commercially available bleach leads to the formation of dimeric pyrrolo[2′,3′:4,5]thieno[2,3-b]pyridines (7a,14a-diamino-7,14-bis(aryl)-7,7a,14,14a-tetrahydro-6H,13H-pyrido[3″″,2″″:4‴,5‴]thieno[2‴,3‴:4″,5″]pyrrolo-[3″,4″:3′,4′]pyrrolo[2′,3′:4,5]thieno[2,3-b]pyridine-6,13-diones) in moderate yields (37–52%). ...
DOI:
10.1016/j.tetlet.2019.03.012

4. Enhanced Charge Transport and Excited-State Charge-Transfer Dynamics in a Colloidal Mixture of CdTe and Graphene Quantum Dots

Author:
Mahato, Malay Krishna; Govind, Chinju; Karunakaran, Venugopal; Nandy, Subhajit; Sudakar, C.; Prasad, Edamana
Source:
Journal of physical chemistry 2019 v.123 no.33 pp. 20512-20521
ISSN:
1932-7455
Subject:
bleaching agents,   etc   ; bleaching; electron transfer; graphene; photocatalysis; physical chemistry; quantum dots; solar energy; spectroscopy; zeta potential;     Show all 10 Subjects
Abstract:
... Semiconductor quantum dot (QD)–graphene composites are promising materials for photovoltaics and photocatalysis because of efficient charge extraction and transport property of graphene. Analysis of their ultrafast carrier-transfer dynamics has been limited to only QD–graphene sheets, such as CdTe–graphene sheets and CdS–graphene sheets. Herein, we investigate the carrier-transfer dynamics of CdTe ...
DOI:
10.1021/acs.jpcc.9b02708

5. Evaluation of Kraft-PS Cooking for Eucalypt and Pine Wood Chip Mixtures

Author:
Zanão, Marina; Colodette, Jorge L.; Oliveira, Rubens C.; Almeida, Diego P.; Gomes, Fernando J. B.; Carvalho, Danila M. de
Source:
Journal of wood chemistry and technology 2019 v.39 no.3 pp. 149-165
ISSN:
1532-2319
Subject:
bleaching agents,   etc   ; Eucalyptus; Pinus; additives; bleaching; cooking; hemicellulose; opacity; oxygen pulping; pulp; refining; wood; wood chips;     Show all 13 Subjects
Abstract:
... The purpose of this study was evaluating polysulfides (PS) as additives in kraft cooking of wood mixtures eucalypt (E) and pine chips (P) wood mixtures, namely: 50E/50P, 70E/30P, and 90E/10P. Bleaching (O(D/A)(EP)D) and refining of pulps were also investigated. The PS addition (1.5 or 3.0%) to the kraft cooking preserved the hemicelluloses resulting increased pulp yield and reduced H-factor. The o ...
DOI:
10.1080/02773813.2018.1533979

6. Photon-Free Degradation of Dyes by Ge/GeO₂ Porous Microstructures

Author:
Shinde, Satish Laxman; Nanda, Karuna Kar
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.7 pp. 6611-6618
ISSN:
2168-0485
Subject:
bleaching agents,   etc   ; dissolved oxygen; dyes; effluents; electrons; energy; industry; microstructure; photocatalysts; wastewater;     Show all 10 Subjects
Abstract:
... Several industries use dyes as coloring agents and release untreated effluents in the form of wastewater that has created panic due to the environmental issue. Considerable efforts have been extended to develop photocatalysts for the degradation of these dyes. Here, we report the photon-free degradation of various cationic and anionic dyes for the first time by Ge/GeO₂ porous microstructures. The ...
DOI:
10.1021/acssuschemeng.8b05549

7. Synthetic applications of rongalite: A green tool in the service of Diels–Alder chemistry and beyond

Author:
Kotha, Sambasivarao; Khedkar, Priti; Dommaraju, Yuvaraj
Source:
Tetrahedron letters 2019 v.60 no.9 pp. 631-648
ISSN:
0040-4039
Subject:
bleaching agents,   etc   ; amino acids; chemical structure; cycloaddition reactions; ethers; industry; sodium; sulfur dioxide;     Show all 8 Subjects
Abstract:
... Rongalite or sodium hydroxymethanesulfinate dihydrate acts as a bleaching agent and it is used in printing and dying industry. Due to its ability to deliver SO2 dianion, rongalite is useful to prepare sultines and sulfones. We have been exploiting its potential towards the construction of diverse polycylic frameworks. This account describes the utility of rongalite to expand the Diels–Alder chemis ...
DOI:
10.1016/j.tetlet.2019.01.031

8. Occurrence of Aflatoxin M1 in raw and processed milk and assessment of daily intake in Lahore, Multan cities of Pakistan

Author:
Ahmad, Mateen; Awais, Muhammad; Ali, Shinawar Waseem; Ali Khan, Hafiz Azhar; Riaz, Muhammad; Sultan, Asif; Shakeel Bashir, Muhammad; Ishtiaq Chaudhry, Adnan
Source:
Food additives & contaminants 2019 v.12 no.1 pp. 18-23
ISSN:
1939-3229
Subject:
bleaching agents,   etc   ; aflatoxin M1; children; cities; dietary exposure; females; males; milk; raw milk; surveys; tea; Pakistan;     Show all 12 Subjects
Abstract:
... In this survey aflatoxin, M₁ was quantified in raw and processed milk from various areas of two big cities of Punjab province, i.e. Lahore and Multan. The results indicated that approximately 90% of the raw milk samples collected from Lahore city was contaminated with aflatoxin M₁. Similarly, around 92% of the raw milk samples collected from Multan city was contaminated with aflatoxin M₁. All samp ...
DOI:
10.1080/19393210.2018.1509899

9. Hypochlorite Resistant Graphene Oxide Incorporated Ultrafiltration Membranes with High Sustainable Flux

Author:
Deemer, Eva M.; Capt, Tallen; Owoseni, Oluwaseye; Akter, Tahmina; Walker, W. Shane
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.27 pp. 11964-11975
ISSN:
1520-5045
Subject:
bleaching agents,   etc   ; composite polymers; contact angle; fouling; graphene oxide; hydrophilicity; hydrophobicity; polyvinylpyrrolidone; porosity; process design; ultrafiltration; washing;     Show all 12 Subjects
Abstract:
... Poly(ether sulfone) (PES) is commonly used polymer in ultrafiltration (UF) membranes which, due to its hydrophobic nature, frequently incorporates the copolymer, polyvinylpyrrolidone (PVP), to improve its hydrophilicity. Membranes are periodically disinfected using bleach which chemically degrades PVP, thus removing its hydrophilic advantage. The utility of graphene oxide (GO) is compared with PVP ...
DOI:
10.1021/acs.iecr.9b01685

10. Synthesis of novel 4,4'-bis(2,4-pyrimidinyl)-diaminostilbene-2,2'-disulfonic acid derivatives and their whitening effect on cotton fiber as fluorescent whitening agents

Author:
Wan, Maosheng; Hua, Li; Zeng, Yiwen; Xie, Dengyu; Jiao, Peifu; Tong, Zhangfa
Source:
Textile research journal 2019 v.89 no.8 pp. 1448-1454
ISSN:
1746-7748
Subject:
bleaching agents,   etc   ; absorption; color; fabrics; fluorescence; lint cotton; nuclear magnetic resonance spectroscopy; optical properties; pH; textile fibers; ultraviolet-visible spectroscopy;     Show all 11 Subjects
Abstract:
... Some novel 4,4'-bis(2,4-pyrimidinyl)-diamino stilbene-2,2'-disulfonic acid derivatives 4a-d were designed and synthesized. Their structures were confirmed by proton nuclear magnetic resonance, elemental analysis and ultraviolet absorption spectra. All newly synthesized compounds were interrogated on their whitening effect on cotton fiber as fluorescent whitening agents. Their optical properties we ...
DOI:
10.1177/0040517518773372

11. Nanoscale Surface Charge Visualization of Human Hair

Author:
Maddar, Faduma M.; Perry, David; Brooks, Rhiannon; Page, Ashley; Unwin, Patrick R.
Source:
Analytical chemistry 2019 v.91 no.7 pp. 4632-4639
ISSN:
1520-6882
Subject:
bleaching agents,   etc   ; aqueous solutions; chemical treatment; finite element analysis; hairs; image analysis; males; microscopy; pH; topography; zeta potential;     Show all 11 Subjects
Abstract:
... The surface charge and topography of human hair are visualized synchronously at the nanoscale using scanning ion conductance microscopy (SICM), a scanning nanopipette probe technique that uses local ion conductance currents to image the physicochemical properties of interfaces. By combining SICM data with finite element method (FEM) simulations that solve for ion transport at the nanopipette under ...
DOI:
10.1021/acs.analchem.8b05977

12. Effectiveness of activated persulfate in removal of foodborne pathogens from romaine lettuce

Author:
Qi, Hang; Hung, Yen-Con
Source:
Food control 2019 v.106 pp. 106708
ISSN:
0956-7135
Subject:
bleaching agents,   etc   ; Escherichia coli O157; Listeria monocytogenes; color; decontamination; ferrous sulfate; food pathogens; fresh produce; peracetic acid; refrigeration; romaine lettuce; sanitizers; sodium hydroxide; temperature;     Show all 14 Subjects
Abstract:
... Activated persulfate could be an alternative sanitizer for fresh produce decontamination. This study is the first in reporting the potential of activated persulfate in reducing Escherichia coli O157:H7 and Listeria monocytogenes from romaine lettuce surface. Ferrous sulfate and sodium hydroxide were used as the activators. Both activation methods achieved up to 3.5 log CFU/g reductions of E. coli ...
DOI:
10.1016/j.foodcont.2019.106708

13. Surface sterilization methods impact measures of internal microbial diversity in ticks

Author:
Binetruy, Florian; Dupraz, Marlène; Buysse, Marie; Duron, Olivier
Source:
Parasites & vectors 2019 v.12 no.1 pp. 268
ISSN:
1756-3305
Subject:
bleaching agents,   etc   ; Amblyomma cajennense; DNA; DNA barcoding; bacteria; blood; denaturation; digestive system; disease transmission; ethanol; microbiome; nucleotide sequences; pathogens; ribosomal RNA; symbionts; taxonomy; ticks; washing;     Show all 18 Subjects
Abstract:
... BACKGROUND: Ticks are obligate blood feeders transmitting major pathogens worldwide. Over the past few years, considerable research efforts have focused on the diversity, distribution and impact of gut and intracellular bacterial symbionts on tick development and tick-borne pathogen transmission. The study of this internal microbiome requires the use of a sterilization method to remove external (i ...
DOI:
10.1186/s13071-019-3517-5

14. Remediation of textile bleaching effluent by bacterial augmented horizontal flow and vertical flow constructed wetlands: A comparison at pilot scale

Author:
Hussain, Zahid; Arslan, Muhammad; Shabir, Ghulam; Malik, Mumtaz Hasan; Mohsin, Muhammad; Iqbal, Samina; Afzal, Muhammad
Source:
The Science of the total environment 2019 v.685 pp. 370-379
ISSN:
0048-9697
Subject:
bleaching agents,   etc   ; Phragmites australis; bacteria; biochemical oxygen demand; bleaching; chemical oxygen demand; constructed wetlands; fabrics; remediation; rhizoplane; textile industry; textile mill effluents; toxicity; wastewater; wastewater treatment;     Show all 15 Subjects
Abstract:
... Fabric bleaching is one of the most widely used processes of the textile industry that also produces a significant amount of highly polluted wastewater. Previously, expensive and chemically extensive conventional remediation systems were used to treat bleaching effluent. Despite this, the potential of constructed wetlands (CWs) as a treatment system remains un-investigated. Furthermore, most resea ...
DOI:
10.1016/j.scitotenv.2019.05.414

15. Co-culture with Enterobacter cloacae does not Enhance Virus Resistance to Thermal and Chemical Treatments

Author:
Deng, Wenjun; Almeida, Giselle; Gibson, Kristen E.
Source:
Food and environmental virology 2019 v.11 no.3 pp. 238-246
ISSN:
1867-0334
Subject:
bleaching agents,   etc   ; Enterobacter cloacae; Kobuvirus; Norovirus; Tulane virus; bacteria; bleaching; chemical treatment; coculture; foodborne illness; heat inactivation; microbial ecology; protective effect; sodium hypochlorite; stainless steel; viruses;     Show all 16 Subjects
Abstract:
... Human noroviruses (hNoV) are the primary cause of foodborne disease in the USA. Most studies on inactivation kinetics of hNoV and its surrogates are performed in monoculture, while the microbial ecosystem effect on virus inactivation remains limited. This study investigated the persistence of hNoV surrogates, murine norovirus (MNV) and Tulane virus (TuV), along with Aichi virus (AiV) under thermal ...
DOI:
10.1007/s12560-019-09381-5

16. Carbamide peroxide nanoparticles for dental whitening application: Characterization, stability and in vivo/in situ evaluation

Author:
Lima, Fabiana Vieira; Mendes, Cassiana; Zanetti-Ramos, Betina Giehl; Nandi, Janayne Kemper; Cardoso, Simone Gonçalves; Bernardon, Jussara Karina; Silva, Marcos Antônio Segatto
Source:
Colloids and surfaces 2019 v.179 pp. 326-333
ISSN:
0927-7765
Subject:
bleaching agents,   etc   ; ambient temperature; bleaching; carbamide peroxide; colloids; color; gels; histology; light transmission; nanoparticles; pH; particle size; photostability; polymers; pulp; spectrophotometers; teeth; thermal degradation; zeta potential;     Show all 19 Subjects
Abstract:
... Carbamide peroxide is the popular home dental whitening agent. However, it has critical stability. Nanoparticles have been applied to develop products with advantages properties as better efficacy and stability increase. The aim of this study was the characterization of carbamide peroxide polymeric nanoparticles, their bleaching efficacy, effects on pulp damage and stability evaluation. Particle s ...
DOI:
10.1016/j.colsurfb.2019.04.006

17. Effective melanin degradation by a synergistic laccase-peroxidase enzyme complex for skin whitening and other practical applications

Author:
Shin, Sang Kyu; Hyeon, Jeong Eun; Joo, Young-Chul; Jeong, Da Woon; You, Seung Kyou; Han, Sung Ok
Source:
International journal of biological macromolecules 2019 v.129 pp. 181-186
ISSN:
0141-8130
Subject:
bleaching agents,   etc   ; Bacillus subtilis; Clostridium cellulovorans; Escherichia coli; carbohydrate binding; cosmetics; decolorization; endo-1,4-beta-glucanase; granules; hydrogen peroxide; industry; laccase; melanin; peroxidase; socioeconomic status; synergism; East Asia;     Show all 17 Subjects
Abstract:
... Melanin is major cause of dark skin, which is regarded as social status in eastern Asia. As a result, researchers in cosmetic industries are developing skin whitening agents. Melanin can be decolorized by many oxidative enzymes. Laccase (CueO) from Escherichia coli and dye-decolorizing peroxidase (DyP) from Bacillus subtilis were merged with the dockerin domain of endoglucanase B from Clostridium ...
DOI:
10.1016/j.ijbiomac.2019.02.027

18. First Report of Bacterial Leaf Streak of Corn Caused by Xanthomonas vasicola pv. vasculorum in Illinois

Author:
Jamann, T. M.; Plewa, D.; Mideros, S. X.; Bissonnette, S.
Source:
Plant disease 2019 v.103 no.5 pp. 1018
ISSN:
0191-2917
Subject:
bleaching agents,   etc   ; DNA; Xanthomonas vasicola pv. vasculorum; Zea mays; bacteria; bacterial leaf streak; collars; corn; cutting; humidity; leaves; membrane proteins; oligodeoxyribonucleotides; pathogenicity; spraying; sugarcane; Illinois;     Show all 17 Subjects
Abstract:
... Bacterial leaf streak symptoms, including long and discontinuous lesions with chlorotic margins bound by major veins, were observed on corn (Zea mays L.) in Dekalb County in September 2016. Of 67 counties surveyed in 2016, DeKalb County was the only county in Illinois with observed symptoms. Bacteria were isolated from symptomatic leaf tissue by surface disinfesting tissue with 10% bleach, cutting ...
DOI:
10.1094/PDIS-10-18-1895-PDN

19. Unexpected reproductive traits of Grateloupia turuturu revealed by its resistance to bleach-based biosecurity protocols

Author:
Capistrant-Fossa, Kyle; Brawley, Susan H.
Source:
Botanica marina 2019 v.62 no.2 pp. 83-96
ISSN:
1437-4323
Subject:
bleaching agents,   etc   ; Bacillariophyceae; Grateloupia turuturu; Palmaria; algae; aquaculture; biosecurity; blades; chlorination; chlorine; death; estuaries; juveniles; protocols; reproductive traits; risk; seawater; Maine;     Show all 18 Subjects
Abstract:
... A non-indigenous alga, Grateloupia turuturu (Halymeniales, Rhodophyta), was discovered in the Damariscotta Estuary (Maine, USA) in 2017, over 200 km north of its last reported location. Because of the presence of coastal facilities (aquaculture, marine laboratories) among potential vectors, we evaluated a mandated biosecurity protocol, namely, seawater treated with bleach at 50 ppm (50 mg l⁻¹) fre ...
DOI:
10.1515/bot-2018-0104

20. Tests of disinfection methods for invasive snails and zooplankton: effects of treatment methods and contaminated materials

Author:
De Stasio, Bart T.; Acy, Christopher N.; Frankel, Kathleen E.; Fritz, Greta M.; Lawhun, Sarah D.
Source:
Lake and reservoir management 2019 v.35 no.2 pp. 156-166
ISSN:
2151-5530
Subject:
bleaching agents,   etc   ; Bythotrephes longimanus; Hemimysis; Potamopyrgus antipodarum; boats; citizen scientists; cleaning; disinfection; freezing; guidelines; human health; invasive species; lakes; mortality; shrimp; snails; spraying; zooplankton; New Zealand;     Show all 19 Subjects
Abstract:
... De Stasio BT, Acy CN, Frankel KE, Fritz GM, Lawhun SD. Tests of disinfection methods for invasive snails and zooplankton: effects of treatment methods and contaminated material. Lake Reserv Manage. 35:156–166. The spread of aquatic invasive species (AIS) in lakes and reservoirs is a major issue that will grow in importance due to possible economic, environmental, and human health impacts of AIS as ...
DOI:
10.1080/10402381.2019.1599086