scholarly journals On the nature and combinations of a newly discovered vegetable acid; with observations on the malic acid, and suggestions on the state in which acids may have previously existed in vegetables

1833 ◽  
Vol 2 ◽  
pp. 22-23
Keyword(s):  
Sulphuric Acid ◽  
Malic Acid ◽  
Cold Water ◽  
Sorbic Acid ◽  
The State ◽  
Hydrogen Gas ◽  
Sorbus Aucuparia ◽  
Ripe Fruit ◽  
A Current ◽  
Sulphuretted Hydrogen

The acid here noticed by the author being obtained in greatest quantity from the fruit of the Sorbus aucuparia , is denominated by him sorbic acid, in order to distinguish it from other known vegetable acids. To prepare it, he presses the ripe fruit, previously bruised, in a linen bag, and thereby obtains nearly half its weight of juice. With this juice he mixes a solution of acetate of lead, and obtains a precipitate of sorbate of lead, which requires to be frequently washed with cold water. The purified powder is then boiled in a large quantity of water, which dissolves a part as a super-sorbate, leaving undissolved a sub-sorbate. The liquor being filtered and suffered to cool, deposits brilliant crystals of purified sorbate of lead. To the crystals thus obtained he adds a quantity of dilute sulphuric acid, sufficient to separate nearly the whole of the lead; and having then separated the remainder by a current of sulphuretted hydrogen gas, he obtains the acid in a state of purity.

Is economic inequality a universal evil?

2019 ◽  
pp. 91-106 ◽  
Author(s):  
Rostislav I. Kapeliushnikov
Keyword(s):  
Quantitative Data ◽  
Large Scale ◽  
Economic Inequality ◽  
The State ◽  
Fair Play ◽  
Left Wing ◽  
Ordinary People ◽  
The Public ◽  
Discursive Power ◽  
A Current

Using published estimates of inequality for two countries (Russia and USA) the paper demonstrates that inequality measuring still remains in the state of “statistical cacophony”. Under this condition, it seems at least untimely to pass categorical normative judgments and offer radical political advice for governments. Moreover, the mere practice to draw normative conclusions from quantitative data is ethically invalid since ordinary people (non-intellectuals) tend to evaluate wealth and incomes as admissible or inadmissible not on the basis of their size but basing on whether they were obtained under observance or violations of the rules of “fair play”. The paper concludes that a current large-scale ideological campaign of “struggle against inequality” has been unleashed by left-wing intellectuals in order to strengthen even more their discursive power over the public.

scholarly journals Cell-free riboswitches

2021 ◽  
Author(s):  
Takeshi Tabuchi ◽  
Yohei Yokobayashi
Keyword(s):  
Protein Synthesis ◽  
The State ◽  
Future Directions ◽  
Free Protein ◽  
Current Perspective ◽  
Gene Switches ◽  
A Current ◽  
Cell Free Protein Synthesis

Synthetic riboswitches can be used as chemical gene switches in cell-free protein synthesis systems. We provide a current perspective on the state of cell-free riboswitch technologies and their future directions.

Ill. On a new electrical storage battery. (Supplementary note.)

1882 ◽  
Vol 33 (216-219) ◽  
pp. 257-258
Keyword(s):  
Sulphuric Acid ◽  
Glass Tube ◽  
The State ◽  
Positive Electrode ◽  
Storage Battery ◽  
Supplementary Note ◽  
Interior Surface ◽  
Lead Plate ◽  
Cupric Sulphate

The new cell consists of a flat copper case, of the same shape as a Grove’s cell; it has a lid of paraffined wood, from which hangs a plate of lead amalgamated with mercury, the lower part of the lead plate being held in a groove in a slip of paraffined wood resting on the bottom of the copper case: through the lid a hole is bored for the introduction of the solution, which consists of a solution of cupric sulphate, to which is added one-twelfth of hydric sulphate; the presence of this free sulphuric acid improves the cell at once. The following sectional sketch shows the arrangement:- AB. The outer flat copper case. C. Plate of amalgamated lead held in grooves in the cap D and the slip E. F shows the hole in the cap through which the solution is introduced, and by the introduction of a glass tube through this hole the state of the charge is seen by observing the colour; the interior surface of the case forms the negative, and the amalgamated lead the positive electrode.

scholarly journals III. On the atomic weight of manganese

1883 ◽  
Vol 35 (224-226) ◽  
pp. 44-48
Keyword(s):  
Carbon Dioxide ◽  
Silver Chloride ◽  
Atomic Weight ◽  
Special Method ◽  
Its Analysis ◽  
A Current ◽  
Sulphuretted Hydrogen

Our attention has been directed for some time to a new determination of the atomic weight of manganese. This communication gives a succinct account of the results of the preliminary stages of such an inquiry, and although the further progress of the investigation may reveal some errors, still we feel convinced the final numbers can in no way differ materially from the present values, and therefore further delay in publication is unnecessary. The atomic weight of manganese has been determined by many chemists, but the resulting values vary considerably according to the special method selected. The results of the different investigators may be divided into two classes—those giving approximately 55 as the number, and those making it about 54. To the former class belong Turner, Berzelius, and Dumas, all of whom use the same method, viz., the determination of the silver chloride yielded by a weighed amount of chloride of manganese. Turner also made determinations from the analysis of the carbonate, and from the conversion of the monoxide into sulphate. Von Hauer used the same method as that employed by him in the determination of the atomic weight of cadmium, viz., the reduction of manganous sulphate to sulphide by ignition in a current of sulphuretted hydrogen. It is probable that this method is not very trustworthy, as, according to Schneider, the sulphide may be contaminated by oxysulphide. Schneider and Rawack belong to the second class of observers, the former employing the oxalate, and from its analysis calculating the atomic weight by deducting the weight of water and carbon dioxide obtained. Rawack, whose experiments were conducted in Schneider’s laboratory, weighed the water obtained by reducing manganoso-manganic oxide to manganous oxide.

The life cycle of a feature: modelling the transitions between feature states

2017 ◽  
Vol 34 (8) ◽  
pp. 1229-1251 ◽  
Author(s):  
Raaid Batarfi ◽  
Aziz Guergachi ◽  
M.I.M. Wahab
Keyword(s):  
Life Cycle ◽  
Design Methodology ◽  
Quality Attributes ◽  
The State ◽  
Detailed Model ◽  
Content Type ◽  
Dead State ◽  
Feature Modelling ◽  
Major Factors ◽  
A Current

Purpose Studies have suggested that attributes are dynamic and a life cycle of product and service attributes exists. When an innovative feature is introduced, the feature might attract and delight customers. However, with the passage of time the state of the attractiveness of this feature may change, for better or for worse. The purpose of this paper is to provide a detailed model that shows the factors and related sub-factors that affect the life cycle of a feature and thereby explain the changes that may happen to a feature over time. Design/methodology/approach This model provide detailed explanations of the direct and indirect factors that affect the states of a feature, the ones that affect the rate of adoption, and the ones that trigger the changes between states. The model uses a current-market product’s feature to discuss the effects of these factors on the life cycle of this feature in detail. Findings This paper extends the theory of attractive quality attributes by identified seven states of the feature in its life cycle. These states are as follows: unknown/unimportant state, honey pot state, racing state, required state, standard state, core state, and dead state. This paper also identified eight major factors that affect the transition of the feature from one state to another. These factors include demographic, socioeconomic, behavioural, psychological, geographical, environmental, organisational, and technological factors. Originality/value The findings of this paper provide additional evidence that product and service attributes are dynamic. This paper also increases the validity of the attractive quality attributes theory and the factors that affect the state of the feature in its life cycle. The understanding of the state of the feature in its life cycle, and the factors that influence this change, helps not only in the introduction of completely new features but also in knowing when to remove obsolescent ones.

scholarly journals II. Contributions towards the history of thiobenzamide

1870 ◽  
Vol 18 (114-122) ◽  
pp. 499-502
Keyword(s):  
Pure State ◽  
Cold Water ◽  
Hydriodic Acid ◽  
Alcoholic Solution ◽  
Boiling Water ◽  
Iodine Solution ◽  
Free Iodine ◽  
History Of ◽  
Starch Paste ◽  
Sulphuretted Hydrogen

When a stream of sulphuretted hydrogen is passed through a solution of benzonitrile in alcoholic ammonia, the liquid, after the lapse of a few hours, deposits fine yellow needles, which are the thiobenzamide, C 7 H 7 NS = C 7 H 5 S} N H} N H} N, discovered by M. Cahours. It can be obtained in a pure state by recrystallization from boiling water. When a cold saturated alcoholic solution of this body is mixed with an alcoholic solution of iodine, the latter is immediately decolorized with separation of sulphur. If the addition of iodine solution be continued until even after a short boiling free iodine remains, which can readily be detected by starch-paste, the solution filtered from the sulphur, and poured into water, solidifies to a mass of white interlaced needles, which can readily be freed from adhering hydriodic acid by washing with cold water.

scholarly journals creación de valor intangibles en las mypes de Tehuacán, a través de la ética y la reputación corporativa

2018 ◽  
Vol 2 (2) ◽  
pp. 14-19
Author(s):  
Miguel Antonio Mascarúa Alcázar ◽  
Cristina Rodríguez Suárez ◽  
Juan Carlos Hernández ◽  
Rafael Casto Vázquez
Keyword(s):  
Social Justice ◽  
Corporate Reputation ◽  
The State ◽  
Traditional Model ◽  
Good Practices ◽  
Current Concern ◽  
A Current ◽  
Buenas Prácticas

El crecimiento de las microempresas (Mypes) en Tehuacán, es una preocupación actual dada la importante aportación a la producción del Estado de Puebla y el empleo. Tal crecimiento se puede medir a través de la Reputación Corporativa, pero para tal efecto se requiere de buenas prácticas que son el ejercicio de la ética. Partiendo del modelo tradicional de la justicia social y la ética, el presente trabajo busca relacionar éste, con los aportes sobre reputación corporativa. El estudio demuestra que un empresario que no responde a las preguntas sobre su negocio exhibe una falta de ética. Abstract  The growth of microenterprises (Mypes) in Tehuacán, is a current concern given the important contribution to the production of the State of Puebla and employment. Such growth can be measured through Corporate Reputation, but for this purpose good practices are required that are the exercise of ethics. Starting from the traditional model of social justice and ethics, the present work seeks to relate this, with the contributions on corporate reputation. The study shows that an entrepreneur who does not answer questions about his business exhibits a lack of ethics.

scholarly journals Bioethics and the Employment of Elderly People in the State of Hidalgo

2021 ◽  
Vol 2 (4) ◽  
pp. 1-9
Author(s):  
Silvia Lizbeth Aguilar ◽  
Sonia Bass-Zavala
Keyword(s):  
Elderly People ◽  
Current Issue ◽  
Demographic History ◽  
The Elderly ◽  
The State ◽  
Health Needs ◽  
Ageing Population ◽  
Basic Health ◽  
Economic Decisions ◽  
A Current

A current issue of relevance for Mexico is the aging of the population, its demographic history has been strongly related directly to political and economic decisions. The ageing population faces significant income-generating challenges, which are essential to meeting its basic health needs, which are increasing considerably. For what is transcendental to characterize as precarious labour has permeated the elderly of the State of Hidalgo, on the basis of the integration of socio-demographic and economic indicators that allow the exploration of the conditions in which this segment of the population finds itself, which is growing every day and serves as an instrument for the generation of public policies.

Radiation and Thermodynamic Characteristics of Hydrogen Gas Near the State of Thermalization

Astrophysics ◽  
2017 ◽  
Vol 60 (4) ◽  
pp. 532-543 ◽  
Author(s):  
N. A. Katysheva ◽  
T. A. Ermolaeva ◽  
V. P. Grinin
Keyword(s):  
Thermodynamic Characteristics ◽  
The State ◽  
Hydrogen Gas

Simultaneous Gas Chromatographic Determination of Carboxylic Acids in Soft Drinks and Jams

1985 ◽  
Vol 68 (5) ◽  
pp. 902-905
Author(s):  
Taizo Tsuda ◽  
Hiroshi Nakanishi ◽  
Takashi Morita ◽  
Junko Takebayashi
Keyword(s):  
Benzoic Acid ◽  
Succinic Acid ◽  
Tartaric Acid ◽  
Carboxylic Acids ◽  
Fumaric Acid ◽  
Malic Acid ◽  
Sorbic Acid ◽  
Chromatographic Determination ◽  
Dehydroacetic Acid

Abstract A method was developed for simultaneous gas chromatographic determination of sorbic acid, dehydroacetic acid, and benzoic acid used as preservatives, and succinic acid, fumaric acid, malic acid, and tartaric acid used as acidulants in soft drinks and jams. A sample was dissolved in NH4OH-NH4CI pH 9 buffer solution, and an aliquot of the solution was passed through a QAE-Sephadex A 25 column. The column was washed with water, and the carboxylic acids were eluted with 0.1N HC1. Sorbic acid, dehydroacetic acid, and benzoic acid were extracted with ethyl ether-petroleum ether (1 + 1), and determined on a 5% DEGS + 1% H3PO4 column. Succinic acid, fumaric acid, malic acid, and tartaric acid in the lower layer were derivatized with N,0- bis(trimethylsilyl)acetamide and trimethylchlorosilane, and determined on a 3% SE-30 column. Recoveries from soft drink and jam samples fortified with 0.1% each of 7 carboxylic acids ranged from 92.4 to 102.6% for preservatives, and from 88.1 to 103.2% for acidulants.

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