Some Aspects of the Properties and Degradation
Chemical Degradation of Polyacrylamide during Hydraulic Fracturing. Environmental Science & Technology 2024, 52 (1) , 327-336. DOI: 10.1021/acs.est.7b00792. Daoyi Zhu, Baojun Bai, and Jirui Hou . Polymer Gel Systems for Water Management in High-Temperature Petroleum Reservoirs: A Chemical Review.
Polyacrylamide (PAM) based friction reducers are a primary ingredient of slickwater hydraulic fracturing fluids. Little is known regarding the fate of these polymers under downhole conditions, which could have important environmental impacts including decisions on strategies for reuse or treatment of flowback water. The objective of this study was to evaluate the chemical degradation of high
STUDIES ON ULTRASONIC DEGRADATION AND BLOCK
STUDIES ON ULTRASONIC DEGRADATION AND BLOCK COPOLYMERIZATION OF POLYACRYLAMIDE AND POLY(ETHYLENE OXIDE) HU Xingqi; XU Xi Polymer Research Institute, Chengdu University of Science and Technology
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Acrylamide and Polyacrylamide: A Review of Production, Use
Acrylamide is a highly water soluble vinyl monomer formed from the hydration of acrylonitrile. The major commercial use of acrylamide is the formation of polymers. In the environment acrylamide has a high mobility in soil, may travel great distances in ground-water, is biodegradable, and is not absorbed by sediments or affected by water treatment. It is absorbed by all routes of animal
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Journal of Chromatographic Science
This article has been cited by the following articles in journals that are participating in CrossRef Cited-by Linking. Biodegradation of acrylamide by a novel isolate, Cupriavidus oxalaticus ICTDB921: Identification and characterization of the acrylamidase produced
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Chemistry, Biochemistry, and Safety of Acrylamide. A
A Review MENDEL FRIEDMAN* Western Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 800 Buchanan Street, Albany, California 94710 Acrylamide (CH2dCHsCONH2), an industrially produced R,â-unsaturated (conjugated) reactive molecule, is used worldwide to synthesize polyacrylamide. Polyacrylamide has found
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Swelling Behavior of Polyacrylamide–Cellulose Nanocrystal
This paper reports swelling behavior of cellulose nanocrystal (CNC)-based polyacrylamide hydrogels prepared by a radical polymerization. The CNC acts as a nanofiller through the formation of complexation and intermolecular interaction. FTIR spectroscopy and XRD studies confirmed the formation of intermolecular bonds between the acrylamide and hydroxyl groups of CNC.
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Limit of detection. A closer look at the IUPAC definition
Polyacrylamide Gel-Contained Zinc Finger Peptide as the “Lock” and Zinc Ions as the “Key” for Construction of Ultrasensitive Prostate-Specific Antigen SERS Immunosensor. ACS Applied Materials & Interfaces 2024, 10 (17) , 15200-15206. DOI: 10.1021/acsami.7b19717.
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Biological treatment of precious metal refinery wastewater
The municipal wastewater study presented by Melin et al. (2006) shows removal efficiencies of 65% and above for a range of criteria including total suspended solids (>99%), COD (89–98%), biological oxygen demand (>97%) and phosphate removal (80–90%). The case study presented by Ren et al. (2005) for the treatment of greywater reported removal efficiencies of >60% for COD.
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The Helicobacter pylori Urease Virulence Factor Is
Chronic Helicobacter pylori infection increases the risk of gastric cancer and induction of hypoxia-induced factor (HIF), which is frequently associated with the development and progression of several types of cancer. We recently showed that H. pylori activation of the PI3K-AKT-mTOR pathway in gastric cells increased HIF-1α expression.
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Frontiers | Production of Vesicular Stomatitis Virus
Human immunodeficiency virus type 1 (HIV-1)-based viral vector is widely used as a biomaterial to transfer a gene of interest into target cells in many biological study fields including gene therapy. Vesicular stomatitis virus glycoprotein (VSV-G)-containing HIV-1 vector much more efficiently transduces various mammalian cells than other viral envelope proteins-containing vectors.
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Variability studies of allochthonous stone pine (Pinus
A total of 50 bands were resolved by SDS-PAGE in the 6.5–200 kDa Mr. range ().Qualitative (absent or band intensity below detection limit in at least one population) and quantitative (bands common to all populations but with different intensities) significant differences were found (ANOVA and Kruskall-Wallis test, p < .05) in 12 bands.Bands 12 and 21 showed qualitative differences and bands
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Controlling proteolytic degradation of the methionine
The control of proteolysis is crucial in a number of protein applications and in several cellular events (Pipe and Kaufman, 1997; Morrow et al. 2002).In agro-biotechnology, BT toxin which is expressed in insect resistant crops has been engineered to resist a specific inactivating proteolysis by insect gut proteases (Audtho et al. 1999).
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A Novel Extracellular Multicopper Oxidase
Lignin degradation by the white rot basidiomycete Phanerochaete chrysosporium involves various extracellular oxidative enzymes, including lignin peroxidase, manganese peroxidase, and a peroxide-generating enzyme, glyoxal oxidase. Recent studies have suggested that laccases also may be produced by this fungus, but these conclusions have been controversial.
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Swelling Behavior of Polyacrylamide–Cellulose Nanocrystal
This paper reports swelling behavior of cellulose nanocrystal (CNC)-based polyacrylamide hydrogels prepared by a radical polymerization. The CNC acts as a nanofiller through the formation of complexation and intermolecular interaction. FTIR spectroscopy and XRD studies confirmed the formation of intermolecular bonds between the acrylamide and hydroxyl groups of CNC.
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Frontiers | Water-Soluble and Insoluble Polymers
The polymeric materials have presented a great development in adsorption processes for the treatment of polluted waters. The aim of the current review is to present the recent developments in this field of study by examining research of systems like functional water-soluble polymers and water-soluble polymer-metal complexes coupled to ultrafiltration membranes for decontamination processes in
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Global Regulation of the Salmonella enterica Serovar
The OmpD porin is the most abundant outer membrane protein in Salmonella enterica serovar Typhimurium and represents about 1% of total cell protein. Unlike the case with the less abundant OmpC and OmpF porins, the stoichiometry of OmpD in the outer membrane does not change in response to changes in osmolarity. The abundance of OmpD increases in response to anaerobiosis and decreases in
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Controlling proteolytic degradation of the methionine
The control of proteolysis is crucial in a number of protein applications and in several cellular events (Pipe and Kaufman, 1997; Morrow et al. 2002).In agro-biotechnology, BT toxin which is expressed in insect resistant crops has been engineered to resist a specific inactivating proteolysis by insect gut proteases (Audtho et al. 1999).
Get PriceKRIBB11 | HSP Inhibitor | MedChemExpress
Immunoblot showing that HSF1 inhibitor KRIBB11 and transcription inhibitor Act-D both fail to block RIP140 degradation. KRIBB11 purchased from MCE. Usage Cited in: Mol Oncol. 2017 Oct;11(10):1475-1492. (A) IHC staining of N-cadherin and E-cadherin in the pancreas from KPC mice treated with vehicle, Metformin, or KRIBB11.
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Stability of a biogas-producing bacterial, archaeal
Introduction. Organic residues (biowaste) accumulate in large amounts as leftovers of food processing and households and are therefore available as a substrate for biogas production [methane (CH 4) and carbon dioxide (CO 2)] in anaerobic reactors (Wiesenthal et al., 2006).Household waste is regularly collected at public expense, and the amount that is presently incinerated or landfilled is in
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THE GREEN FLUORESCENT PROTEIN | Annual Review of Biochemistry
In just three years, the green fluorescent protein (GFP) from the jellyfish has vaulted from obscurity to become one of the most widely studied and exploited proteins in biochemistry and cell biology. Its amazing ability to generate a highly visible, efficiently emitting internal fluorophore is both intrinsically fascinating and tremendously valuable. High-resolution crystal structures of GFP
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THE GREEN FLUORESCENT PROTEIN | Annual Review of Biochemistry
In just three years, the green fluorescent protein (GFP) from the jellyfish has vaulted from obscurity to become one of the most widely studied and exploited proteins in biochemistry and cell biology. Its amazing ability to generate a highly visible, efficiently emitting internal fluorophore is both intrinsically fascinating and tremendously valuable. High-resolution crystal structures of GFP
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A Genome-Wide Association Scan in Admixed Latin Americans
We report a genome-wide association scan in over 6,000 Latin Americans for features of scalp hair (shape, colour, greying, balding) and facial hair (beard thickness, monobrow, eyebrow thickness). We found 18 signals of association reaching genome-wide significance (P values 5 × 10(-8) to 3 × 10(-119 …
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Citations - GEP - Scientific Research Publishing
Scientific Research Publishing is an academic publisher with more than 200 open access journal in the areas of science, technology and medicine. It also publishes academic books and conference proceedings.
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Changes in nano-mechanical properties of... | Wellcome
Introduction. Atopic dermatitis (AD) is a common inflammatory skin disease, with a lifetime prevalence up to 20% (Drislane & Irvine, 2024; Weidinger et al., 2024).Impaired skin permeability barrier, which is largely provided by the stratum corneum (SC), is an important etiological factor in AD (Elias & Schmuth, 2009; Kezic et al., 2014).SC, the outermost skin layer is comprised of terminally
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Stability of a biogas-producing bacterial, archaeal
Introduction. Organic residues (biowaste) accumulate in large amounts as leftovers of food processing and households and are therefore available as a substrate for biogas production [methane (CH 4) and carbon dioxide (CO 2)] in anaerobic reactors (Wiesenthal et al., 2006).Household waste is regularly collected at public expense, and the amount that is presently incinerated or landfilled is in
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The molecular interaction of ADAMTS-1 and fibulin-1
Introduction. The extracellular environment is a dynamic niche in which multiple molecular interactions occur that govern cell fate. Several families of extracellular proteins function in this molecular dance, influencing cell properties and thus regulating either physiological or pathological processes [1,2].In addition, stromal cells are considered especially important in the extracellular
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Production of heterologous cutinases by E. coli
Production of heterologous cutinases by E. coli and improved enzyme formulation for application on plastic degradation. Daniela S. Gomes* 1 · Teresa Matamá 2 · Artur Cavaco-Paulo 2 · Galba M. Campos-Takaki 1 · Alexandra A. Salgueiro 1 1 Universidade Católica de Pernambuco, Núcleo de Pesquisas em Ciências Ambientais, Pró-reitoria Acadêmica, Coordenação Geral de Pesquisa, Boa Vista
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Mass Spectrometry in the Postgenomic Era | Annual Review
Mass spectrometry (MS) is rapidly becoming an essential tool for biologists and biochemists in their efforts to throw light on molecular mechanisms within cellular systems. Used in unison with genome sequence data, MS has developed into the method of choice for identifying proteins, elucidating their posttranslational modifications, and reading out their functional interactions. Variations of ...
Get Price- What is polyacrylamide PAM flocculant?
- The following are their detailed introduction and specifications. As a polymer flocculant for water treatment, polyacrylamide pam flocculant can absorb suspended particles in water, act as a link and bridge between particles, make fine particles form relatively large flocs, and speed up the speed of precipitation.
- What are the advantages of cationic polymer flocculants?
- The observed flocs stability is a major advantage of cationic polymer flocculants. Inorganic flocculants formed a foamy and powdery layer of flocculated biomass on the bottom of the flask in the experiment .
- Can cationic polyacrylamide be used for oily wastewater treatment?
- Zhao C, Zheng H, Gao B, Liu Y, Zhai J, Zhang S, Xu B (2018) Ultrasound-initiated synthesis of cationic polyacrylamide for oily wastewater treatment: Enhanced interaction between the flocculant and contaminants.
- Can cationic polymer flocculants be developed by photo-polymerization?
- In this study, we utilized recent developments in the photo-polymerization technique to develop two cationic polymer flocculants by polymerizing two types of monomers for harvesting Chlorella vulgaris ( C. vulgaris) and Porphyridium purpureum ( P. purpureum ), which are freshwater and marine microalgae species, respectively.
