A polyoxy group branched diazo dye as an alternative material for the fabrication of an electrochemical epinephrine sensor

AbstractImmobilized polymerized electroactive vesicles (IPEVs) are submicron biocapsules capable of storing charge in confined environments and chemisorbing on surfaces. Methods to immobilize stable submicron sized electroactive vesicles and the means to measure electroactivity of IPEVs at nanolevels have been demonstrated. IPEVs can withstand steep potential gradients applied across their membrane, maintain their structural integrity against surfaces poised at high/low electrical potentials, retain electroactive material over several days, and reversibly mediate (within the membrane) electron flow between the electrode surface and vesicle interior. IPEVs have strong potential to be used for charge storage and electron coupling applications that operate on the submicron scale and smaller.

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Teks Anekdot dalam Cerita Lisan Yong Dollah Pewarisan Orang Melayu Sebagai Alternatif Pemilihan Bahan Ajar Bahasa Indonesia

GERAM ◽

10.25299/geram.2019.vol7(2).3774 ◽

2019 ◽

Vol 7 (2) ◽

pp. 30-43

Author(s):

Muhammad Mukhlis ◽

Asnawi Asnawi

Keyword(s):

Content Analysis ◽

Research Method ◽

The Other ◽

Teaching Material ◽

Generic Structure ◽

Alternative Material ◽

Descriptive Approach ◽

Alternative Choice ◽

Generic Structures ◽

Bahasa Indonesia

This research is entitled as "Anecdotal Text in the Oral Story of Yong Dollah Inheritance of Malays as Alternative Choice for Indonesian Language Teaching Materials". It is inspired by the collection of Yong Dollah stories as the inheritance of Malays in Bengkalis Regency which contain of humor elements. In addition, the stories have the same characteristics with anecdotal text, so that it can be applied as teaching material for Indonesia Language subject in the school. This research method was content analysis of descriptive approach. This research was conducted during six months. The technique used to collect data were documentation and interview. The data of this study were the entire generic structure and language features of anecdotal texts contained in a collection of Yong Dollah stories which consisted of 11 stories. The result showed that as following. First, there are five texts contain of complete generic structures and six texts contain of incomplete generic structure which is coda part for data 2, 3, 5, 8, and 1. Second, about language features, there are four data contains of all language features of Anecdote text, but on the other side, there are seven incomplete language features in the texts. Third, the consideration of choosing Yong Dollah as alternative material for Indonesia Language subject refers to eight indicators that are conveyed based on teachers’ perception toward Anecdote text Yong Dolla. 55 % of number of teachers claim that these texts suitable to be implemented as teaching material, but 44% of them claim neutral, and 1% claim disagree on it.

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In Operando Detection of the Physical Properties Change of the Interfacial Electrolyte during Li-Metal Electrode Reaction by Atomic Force Microscopy

10.26434/chemrxiv.12616793.v1 ◽

2020 ◽

Author(s):

Mitsunori Kitta

Keyword(s):

Atomic Force Microscopy ◽

Energy Dissipation ◽

Physical Properties ◽

Electrode Surface ◽

Electrode Reaction ◽

Metal Electrode ◽

Ion Concentration ◽

Force Microscopy ◽

Atomic Force ◽

Discharge Reaction

This manuscript propose the operando detection technique of the physical properties change of electrolyte during Li-metal battery operation.The physical properties of electrolyte solution such as viscosity (η) and mass densities (ρ) highly affect the feature of electrochemical Li-metal deposition on the Li-metal electrode surface. Therefore, the operando technique for detection these properties change near the electrode surface is highly needed to investigate the true reaction of Li-metal electrode. Here, this study proved that one of the atomic force microscopy based analysis, energy dissipation analysis of cantilever during force curve motion, was really promising for the direct investigation of that. The solution drag of electrolyte, which is controlled by the physical properties, is directly concern the energy dissipation of cantilever motion. In the experiment, increasing the energy dissipation was really observed during the Li-metal dissolution (discharge) reaction, understanding as the increment of η and ρ of electrolyte via increasing of Li-ion concentration. Further, the dissipation energy change was well synchronized to the charge-discharge reaction of Li-metal electrode.This study is the first report for direct observation of the physical properties change of electrolyte on Li-metal electrode reaction, and proposed technique should be widely interesting to the basic interfacial electrochemistry, fundamental researches of solid-liquid interface, as well as the battery researches.

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Resolving Chemical Bond Dynamics at an Electrode Surface: Ramifications for Heterogeneous Catalysis

10.29363/nanoge.fallmeeting.2018.023 ◽

2018 ◽

Author(s):

Tanja Cuk

Keyword(s):

Heterogeneous Catalysis ◽

Chemical Bond ◽

Electrode Surface

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Potential of Tyre Derived Geomaterial as Alternative Material in Gabion Type Retaining Wall

International Journal of Integrated Engineering ◽

10.30880/ijie.2019.11.06.029 ◽

2019 ◽

Vol 11 (6) ◽

Author(s):

Amizatulhani Abdullah ◽

◽

Mohammad Amirul Syukri Md Zain ◽

Mohd Yuhyi Mohd Tadza ◽

Hemanta Hazarika ◽

...

Keyword(s):

Retaining Wall ◽

Alternative Material

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Biocompatiblibility analysis of the decellularized bovine pericardium

Cell and Organ Transplantology ◽

10.22494/cot.v8i2.110 ◽

2020 ◽

Vol 8 (2) ◽

Author(s):

A. Sokol ◽

◽

D. Grekov ◽

G. Yemets ◽

O. Galkin ◽

...

Keyword(s):

Tissue Engineering ◽

Sodium Dodecyl ◽

Bovine Pericardium ◽

Surrounding Tissue ◽

Tissue Samples ◽

Group I ◽

Alternative Material ◽

Decellularized Scaffolds ◽

Group 2 ◽

Potential Use

The decellularized bovine pericardium and its potential use as a natural scaffold is a promising approach in the field of tissue engineering and regenerative medicine. The reaction of the host toward decellularized scaffolds depends on their biocompatibility, which should be satisfied being before applied in clinical use. Purpose: to evaluate the biocompatibility of the extracellular matrices, which were decellularized by trypsin enzyme and anionic sodium dodecyl sulfate (SDS) detergent. Material and methods. Pericardial sacs were acquired from 12-18 months’ age bulls. Tissue decellularization was performed by using 0.25 % Trypsin solution and 1 % ionic SDS for group I and 0.1 % SDS for group II samples. The implantation was performed on Wistar rats. The tissue samples were stained with hematoxylin & eosin, Congo red and Masson's Trichrome for histological analysis. Results. In group 1 in 3 months after subcutaneous implantation in rats we noticed the inflammation in surrounding tissue and degradation of the implant. Under the same conditions in animals of group 2 implant replacement with growing immature connective tissue was noted. Bio-implant of this group did not degrade, moreover it's integrated to the tissues of experimental rats. Conclusion. Our results showed that decellularized bovine pericardium by 0.1 % SDS can become an alternative material for tissue engineering and has the potential for further use in human surgery.

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Titration of sulphates and lead using lead ion selective electrode

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19810368 ◽

1981 ◽

Vol 46 (2) ◽

pp. 368-376 ◽

Cited By ~ 4

Author(s):

Josef Veselý

Keyword(s):

Ionic Strength ◽

Electrode Surface ◽

Salt Content ◽

Ion Selective Electrode ◽

Lead Ion ◽

Selective Electrode ◽

Limit Of Determination ◽

Total Salt Content ◽

Automatic Titration

Titration of sulphates with lead perchlorate employing lead ion selective electrode indication was studied using additions of various organic solvents at different pH' and ionic strength values. As the optimum emerged systems with 60-70% 1,4-dioxane, pH' 5.3-5.6. After dehydration with sodium hydroxide, dioxane must be freed from the electrode surface-oxidizing impurities by their reduction with sodium metal and subsequent distillation. The method was applied to determination of sulphates in mountain spring waters. Units of ppm can be determined; the limit of determination, however, depends considerably on the content of dioxane, total salt content in the sample, and speed of the semi-automatic titration. Lead can be determined with EDTA in concentrations down to c(Pb2+) = 5 . 10-6 mol l-1.

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