Effect of Ion-Exchange Adsorption on the Protein Profiles of White Wines

2001 ◽  
Vol 7 (3) ◽  
pp. 217-224 ◽  
Author(s):  
M. R. Sarmento ◽  
J. C. Oliveiraz ◽  
M. Slatner ◽  
R. B. Boulton
Keyword(s):  
Ion Exchange ◽  
Euclidean Distance ◽  
Protein Profiles ◽  
Protein Peak ◽  
Profile Similarity ◽  
Two Samples ◽  
Before And After ◽  
Exchange Adsorption ◽  
Peak Areas ◽  
Hplc Fractionation

The protein profiles of two different wines of Austrian and Portuguese origin, characterized by HPLC fractionation, were compared before and after ion-exchange adsorption of the wine proteins. Conventionally used sodium bentonite and three alternative nonswelling commercial resins were used. Profile similarity was assessed in terms of the Euclidean distance of all protein peak areas for two samples, and of the average of the differences between each protein peak percentile area between two samples. In general, the differences between profiles for the same material increased with the amount of wine adsorbed, showing that some protein fractions were more easily adsorbed than others. Differences between the adsorption with bentonite or with the alternative adsorbents were not statistically significant, with the exception of one adsorbent in one of the wines, where protein removal was more extensive.

Reaction Mechanism between Zn2+ and Diatomite in Preparation of Zn2+/Diatomite Antibacterial Agent

2011 ◽  
Vol 685 ◽  
pp. 260-263 ◽  
Author(s):  
Ning Liang ◽  
Hao Ding ◽  
Yong Teng Hu ◽  
Bai Kun Wang
Keyword(s):  
High Temperature ◽  
Reaction Mechanism ◽  
Ion Exchange ◽  
Antibacterial Agent ◽  
Physical Adsorption ◽  
Reaction Model ◽  
Oh Groups ◽  
Heat Treated ◽  
Before And After ◽  
Exchange Adsorption

The reaction mechanism between Zn2+and diatomite in preparation of Zn2+/diatomite antibacterial agent by diatomite adsorbing and solidifying Zn2+in its pores was studied. Microporous adsorption, characterized by hydrated Zn2+adsorbed in the micropores of diatomite, and surface coordinate adsorption, featured with coordination of Zn2+with functional groups on the surfaces of diatomite, were the main adsorption ways accompanied by ion exchange adsorption and physical adsorption. SEM was used to observe the morphologies of diatomite before and after adsorption. Due to the dehydration between OH groups on the surfaces of diatomite when heat treated at high temperature, Si-O-Zn bonds were formed, combining Zn2+with diatomite together. Reaction model between Zn2+and diatomite was established.

Effect of Ion-Exchange Adsorption on the Protein Profiles of White Wines

2001 ◽  
Vol 7 (3) ◽  
pp. 217-224 ◽  
Author(s):  
M.R. Sarmento ◽  
J.C. Oliveira ◽  
M. Slatner ◽  
R.B. Boulton
Keyword(s):  
Ion Exchange ◽  
Protein Profiles ◽  
White Wines ◽  
Exchange Adsorption

A review on extractive fermentation via ion exchange adsorption resins opportunities, challenges, and future prospects

2021 ◽  
Author(s):  
Abdul Sattar Jatoi ◽  
Humair Ahmed Baloch ◽  
Shaukat Ali Mazari ◽  
N. M. Mubarak ◽  
Nizamuddin Sabzoi ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Extractive Fermentation ◽  
Future Prospects ◽  
Exchange Adsorption

scholarly journals The Effect of Acetic Acid Treatments on the Quality of Stored Carrot (Daucus carota L.) Seeds

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1176
Author(s):  
Hanna Dorna ◽  
Agnieszka Rosińska ◽  
Dorota Szopińska
Keyword(s):  
Acetic Acid ◽  
Distilled Water ◽  
Storage Duration ◽  
Seed Vigour ◽  
Daucus Carota L ◽  
Two Samples ◽  
Before And After ◽  
Alternaria Dauci ◽  
Acid Treatments

Alternaria dauci (J.G. Kühn) J.W. Groves et Skolko and A. radicina Meier, Drechsler et E.D. Eddy are important seed-transmitted pathogens of carrot. The aim of this study was to evaluate the effects of acetic acid treatments on the quality of stored carrot seeds. Seeds of two samples were soaked for 30 min in 0.5, 1 and 2% acetic acid. Controls included untreated seeds, seeds soaked in distilled water and seeds treated with fungicide Zaprawa Nasienna T 75 WS/DS (a.i. thiram 75%). Germination, vigour and health of untreated and treated seeds were evaluated before and after 5 and 12 months of storage at 4 and 20 °C. Seeds of both samples treated with 0.5 and 1% acetic acid were characterized by higher germination capacity after storage than untreated seeds. However, treatments with 1 and 2% acetic acid negatively affected seed vigour. Generally, seeds of both samples treated with acetic acid were characterized by lower infestation with A. alternata and A. radicina after storage than untreated seeds and seeds soaked in distilled water. Moreover, acetic acid often controlled these fungi more effectively than the fungicide. Regardless of the storage duration, infestation with fungi was higher if seeds of both samples were stored at a lower temperature.

scholarly journals Polymer Composite—A Potential Biomaterial for the Removal of Reactive Dye

2012 ◽  
Vol 9 (4) ◽  
pp. 1823-1834 ◽  
Author(s):  
P. N. Palanisamy ◽  
A. Agalya ◽  
P. Sivakumar
Keyword(s):  
Ion Exchange ◽  
Langmuir Isotherm ◽  
Isosteric Heat ◽  
Reactive Dye ◽  
Isotherm Model ◽  
Batch Adsorption ◽  
Solution Ph ◽  
Saw Dust ◽  
Exchange Adsorption ◽  
Langmuir Isotherm Model

Poly Pyrrle saw dust composite was prepared by reinforcement of natural wood saw dust (obtained fromEuphorbia Tirucalli Lwood) and Poly Pyrrole matrix phase. The present study investigates the adsorption behaviour of Poly Pyrrole Saw dust Composite towards reactive dye. The batch adsorption studies were carried out by varying solution pH, initial dye concentration, contact time and temperature. The kinetic study showed that adsorption of Reactive Red by PPC was best represented by pseudo-second order kinetics with ion exchange adsorption. The equilibrium data were analyzed by Freundlich and Langmuir isotherm model. The equilibrium isotherm data were fitted well with Langmuir isotherm model. The maximum monolayer adsorption capacities calculated by Langmuir model were 204.08 mg/g for Reactive Red at 303 K. The thermodynamic parameters suggest the spontaneous, endothermic nature of ion exchange adsorption with weak Vader walls force of attraction. Activation energy for the adsorption of Reactive by Poly Pyrrole Composite was 11.6387 kJ/mole, Isosteric Heat of adsorption was 48.5454 kJ/mole also supported the ion exchange adsorption process in which forces of attraction between dye molecules and PPC is weak.

Privacy-preserving inpainting for outsourced image

2021 ◽  
Vol 17 (11) ◽  
pp. 155014772110590
Author(s):  
Fang Cao ◽  
Jiayi Sun ◽  
Xiangyang Luo ◽  
Chuan Qin ◽  
Ching-Chun Chang
Keyword(s):  
Euclidean Distance ◽  
Image Inpainting ◽  
Privacy Preserving ◽  
Weighted Mean ◽  
Encrypted Image ◽  
Cloud Server ◽  
Before And After ◽  
Current Block ◽  
Secure Cloud Computing

In this article, a framework of privacy-preserving inpainting for outsourced image and an encrypted-image inpainting scheme are proposed. Different with conventional image inpainting in plaintext domain, there are two entities, that is, content owner and image restorer, in our framework. Content owner first encrypts his or her damaged image for privacy protection and outsources the encrypted, damaged image to image restorer, who may be a cloud server with powerful computation capability. Image restorer performs inpainting in encrypted domain and sends the inpainted and encrypted image back to content owner or authorized receiver, who can acquire final inpainted result in plaintext domain through decryption. In our encrypted-image inpainting scheme, with the assist of Johnson–Lindenstrauss transform that can preserve Euclidean distance between two vectors before and after encryption, the best-matching block with the smallest distance to current block can be found and utilized for patch filling in Paillier-encrypted image. To eliminate mosaic effect after decryption, weighted mean filtering in encrypted domain is conducted with Paillier homomorphic properties. Experimental results show that our privacy-preserving inpainting framework can be effectively applied in secure cloud computing, and the proposed encrypted-image inpainting scheme achieves comparable visual quality of inpainted results with some typical inpainting schemes in plaintext domain.

Honesty in Personal Tax Reporting: Ethical Prompts, Individual Factors, and Tax Reform

2020 ◽  
Author(s):  
Charles D. Bailey ◽  
James M. Plecnik
Keyword(s):  
Tax Evasion ◽  
Large Scale ◽  
Tax Reform ◽  
Dark Triad ◽  
Individual Factors ◽  
Voluntary Compliance ◽  
Two Samples ◽  
Before And After ◽  
Tax Reporting ◽  
Jobs Act

This study focuses on whether an ethical prompt, adapted from Mazar et al. (2008), can reduce easily concealed tax evasion—i.e., tax evasion relating to cash-based income for which the IRS relies on voluntary compliance. We also consider the “Dark Triad” personality traits and other individual attitudes and characteristics that may drive or predict tax evasion intentions. We unexpectedly find that ethical prompts do not affect intent to engage in tax evasion, but our result is consistent with a newly released large-scale replication project that fails to find an effect for this much-discussed religious/ethical prompt, and the power of our test is about 80%. Of the variables studied, only psychopathy, commitment to the process of taxation, and fear of punishment predict intent to evade. These findings are consistent across two samples, taken both before and after the passage of the Tax Cuts and Jobs Act of 2017.

Confirmatory Method for N-Nitrosodimethylamine and N-Nitrosopyrrolidine in Food by Multiple Ion Analysis with Gas Chromatography-Low Resolution Mass Spectrometry Before and After Ultraviolet Photolysis

1982 ◽  
Vol 65 (5) ◽  
pp. 1162-1167
Author(s):  
W I Kimoto ◽  
Walter Fiddler
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Uv Light ◽  
Capillary Gc ◽  
Low Resolution ◽  
Total Extract ◽  
Before And After ◽  
Ultraviolet Photolysis ◽  
Peak Areas ◽  
Volatile Nitrosamines

Abstract A confirmatory procedure is described for determining N-nitrosodimethylamine (NDMA) and N-nitrosopyrrolidine (NPYR) in bacon, beer, and malt by gas chromatography-low resolution quadrupole mass spectrometry (GC-MS). The presence of 3 monitored ions, m/z 30, 42, and 74 for NDMA, and m/z 30,42, and 100 for NPYR, before and disappearance after photolysis under UV light at 365 nm without quantitation of peak areas was considered confirmatory evidence for their presence. The extracts, obtained by mineral oil distillation methods' for bacon and malt, and dry column methods for bacon and beer, underwent cleanup procedures before capillary GC-MS analysis. Less than 100 ng nitrosamine in the total extract, or approximately 2 ng NDMA or 3 ng NPYR injected into the GC-MS instrument, can be confirmed by this method. This technique should also be applicable for other volatile nitrosamines.

scholarly journals A Study of the Micropore Structure of Carbonized Rayon Yarn by Nitrogen Adsorption and Nonane Pre-Adsorption

1985 ◽  
Vol 2 (2) ◽  
pp. 89-95 ◽  
Author(s):  
J. N. Bohra ◽  
K. S. W. Sing
Keyword(s):  
External Surface ◽  
Nitrogen Adsorption ◽  
The Other ◽  
Adsorption Method ◽  
Micropore Structure ◽  
Surface Areas ◽  
Three Samples ◽  
Two Samples ◽  
Before And After ◽  
Gain Access

Adsorption isotherms of nitrogen have been determined at 77 K on three samples of carbonized rayon yarn, both before and after the pre-adsorption of n-nonane. In their original state the three samples were all highly microporous. Application of the αs-method of isotherm analysis reveals that their micropore volumes were 0·17–0·19 cm3g−1 and their external surface areas 20–27 m2g−1 (the corresponding BET areas being 427–483 m2g−1). Nonane pre-adsorption resulted in blockage of the entire micropore structure only in the case of one sample: micropore volumes ∼0·1 cm3g−1 were still available for nitrogen adsorption in the other two samples. It appears that nitrogen molecules were able to gain access to some parts of these micropore structures through wider pore entrances which were not completely blocked by the pre-adsorbed nonane. The work has shown that the nonane pre-adsorption method requires further investigation before it can be used with confidence for the assessment of microporosity.

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