scholarly journals Treatment with different fining agents of white musts from spoiled wine grapes

Wine Studies ◽  
2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Eric Meistermann ◽  
Michel Pinsun
Keyword(s):  
Powdery Mildew ◽  
Botrytis Cinerea ◽  
New Products ◽  
Wine Grapes ◽  
Quality Of Control ◽  
Pectolytic Enzymes ◽  
Fining Agents ◽  
Pea Proteins ◽  
Derivatives Of

Fining agents have evolved significantly over the last twenty years. The need for winemakers to have objective references about the new products has prompted this study. The experiment consists in comparing the new fining products (charcoal, pea proteins, derivatives of chitin and composite products generally mixing PVPP + various proteins + bentonite) with reference products such as casein and PVPP and with non-treated controls. Fining agents were applied during clarification of 15 different musts obtained from wine grapes affected by different degrees and types of rot: fresh and dry Botrytis cinerea rot, powdery mildew and Botrytis contaminated with other fungi (Aspergillus, Penicillium, Basidiomycetes), giving the bunches offflavours that were earthy and resembled fresh mushrooms. This study highlights the importance of good clarification of musts. The quality of control wines, without any treatment, increases with the clarity of the must. In most experiments, clarification of the must around 50 Nephelometric Turbidity Units (NTU) can eliminate or reduce any organoleptic defects in wine without fining. Use of pectolytic enzymes may be necessary in order to reach this level of clarity. The new allergen-free fining agents have the same effectiveness as reference products such as casein and polyvinylpolypyrolidone (PVPP). Composite products are more efficient than pea protein alone and less than products including charcoal. However, the improvement of aromatic quality goes hand in hand with loss of body and persistence.

PRELIMINARY ASSESSMENT OF A BLACK CURRANT NEW HYBRID MATERIAL FOR RESISTANCE TO BIOTIC FACTORS

1970 ◽  
pp. 37-39
Author(s):  
А. Yu. Bakhotskaya ◽  
S. D. Knyazev
Keyword(s):  
Powdery Mildew ◽  
High Resistance ◽  
Selection Process ◽  
Cultivated Plants ◽  
Biotic Factors ◽  
Preliminary Assessment ◽  
Black Currant ◽  
Speed Up ◽  
Derivatives Of

 Resistance to diseases and pests is one of the main tasks of a breeder when creating varieties of cultivated plants. On perennial plants, which include black currants, diseases have a significant impact on the quantity and quality of the formed yield, as well as on the laying of the subsequent yield. Constant screening of new breeding material allows not only to select and isolate promising highly resistant forms at the early stages of ontogenesis, but also, as a result, to speed up the entire selection process of creating immune varieties. As a result of our research, we found that the bulk of the studied hybrid seedlings in 2019-2020 were resistant to American powdery mildew and columnar rust. High resistance to American powdery mildew is characteristic of derivatives of glutinous currant and the Scandinavian subspecies of black currant. Also, the derivatives of glutinous currant are characterized by high resistance to columnar rust.

Use the Differential Filters in the Control System of Pneumatic Muscle

2015 ◽  
Vol 816 ◽  
pp. 224-233
Author(s):  
Leszek Cedro
Keyword(s):  
Control Process ◽  
Quantization Noise ◽  
State Variables ◽  
Real Time Control ◽  
Pneumatic Muscle ◽  
Linear Dynamic Systems ◽  
Quality Of Control ◽  
Time Control ◽  
Derivatives Of

The paper discusses the use of differential filters in control algorithms. The filters are designed to determine the derivatives of the input signal and eliminate measuring and quantization noise. The differential filters improved the quality of control, with the results being better than those obtained with the classic Finite Difference Method (FDM). The primary purpose of the study was to employ the differential filters in a real-time control algorithm, which requires appropriate derivatives. The control process involved applying a method of aggregation of state variables, based on signal derivatives, which can be used for non-linear dynamic systems. The experiments were conducted on a test stand with a pneumatic muscle acting as the plant to be controlled.

Experience with the Relay Procedure for Tuning Controllers in Automatic Control of Chlorination

1993 ◽  
Vol 28 (11-12) ◽  
pp. 257-261
Author(s):  
M. Truett Garrett ◽  
Zaki Ahmad ◽  
Shelly Young
Keyword(s):  
Wastewater Treatment ◽  
Automatic Control ◽  
Time Constant ◽  
Wastewater Treatment Plants ◽  
Relay Feedback ◽  
Quality Of Control ◽  
Incomplete Mixing ◽  
Long Time ◽  
Chlorine Demand

The recent requirements by U.S.E.P.A. for dechlorination and biomonitoring have increased the importance of automatic control of effluent chlorination in wastewater treatment plants. Difficulties with the Ziegler-Nichols controller tuning procedure were reported at the Kyoto Workshop, 1990. Problems are caused by the noise of incomplete mixing, a long time constant, and the disturbances of changing flow and chlorine demand. The Astrom-Hagglund relay feedback procedure provides acceptable control while data is logged to determine the controller constants. Experiences in using the procedure in existing facilities (not redesigning the mixing point) and the quality of control are presented.

India as a Hub of Innovations for the Millions (I4M)

2018 ◽  
Author(s):  
Vijay Mahajan
Keyword(s):  
Quality Of Life ◽  
Young People ◽  
New Products ◽  
High Growth ◽  
Institutional Arrangements ◽  
Base Of The Pyramid ◽  
Large Economy ◽  
The World

This chapter deals with Indian ‘innovations for the millions’ (I4M)—new products, processes, and institutional arrangements—that sustainably improve the quality of life of those at the base of the pyramid. Taking ten examples which originated from the private, public, NGO and cooperative sectors, the chapter suggests that these innovations are a response of the ‘elite of calling’ to the Indian paradox – high growth in a large economy, co-existing with a very large number at the base of the pyramid. The chapter argues that a more supportive ecosystem needs to be built to foster I4M, including reforms in regulation and taxation, and attracting bright young people. If that happens Indian I4M can serve billions at the base of the pyramid around the world.

scholarly journals Quality of Control in the Tavis–Cummings–Hubbard Model

2021 ◽  
Author(s):  
R. Düll ◽  
A. Kulagin ◽  
W. Lee ◽  
Yu. Ozhigov ◽  
H. Miao ◽  
...  
Keyword(s):  
Hubbard Model ◽  
Quality Of Control

ON ASSESSMENT OF THE QUALITY OF CONTROL AND SORTING MACHINES. PART I

2021 ◽  
pp. 27-33
Author(s):  
YA.L. LIBERMAN ◽  
◽  
L.N. GORBUNOVA ◽  
Keyword(s):  
Quality Of Control

ENTREPRENEURIAL OPTIMISM, THE NATURE OF ENTREPRENEURIAL EXPERIENCE AND DEBT DECISION FOR BUSINESS START-UP

2018 ◽  
Vol 22 (03) ◽  
pp. 1850024 ◽  
Author(s):  
HÉDIA FOURATI ◽  
RIHAB BEN ATTITALAH
Keyword(s):  
Earnings Forecasts ◽  
Adjustment Cost ◽  
Debt Ratio ◽  
Entrepreneurial Experience ◽  
Panel Data Estimation ◽  
Quality Of Control ◽  
Start Up ◽  
Serial Entrepreneurs ◽  
Data Estimation

This paper studies the entrepreneurial optimism and debt decisions for business start-up. By analysing a sample of 160 business start-up and by using the panel data estimation, we study entrepreneurs’ optimism and its impact on debt decision of business start-up. The measure of entrepreneurial optimism is based on the entrepreneur earnings forecasts initiated by Lin et al. (2005). Meanwhile, the nature of entrepreneurial experience (serial and portfolio entrepreneur) has an effect on entrepreneurial optimism and leads to more or less optimistic entrepreneur. The results reveal that optimistic entrepreneur prefers equity in funding the financial deficit. Serial entrepreneurs tend to use more debt funding. In the dynamic model, the entrepreneur acquiring business concurrently adjusts slowly to debt ratio. Nevertheless, the sequential entrepreneurial experience leads to more optimism and so on more debt use. Given the governance role played by banks, the high adjustment cost for start-up is a consequence of the efficiency of the quality of control exercised by banks that in spite of entrepreneurial optimism, the entrepreneur does not convince the financiers to be so confident on the prospect of the business.

scholarly journals The sensorless control system for controlling the speed of direct current motor

2019 ◽  
Vol 16 (3) ◽  
pp. 1171
Author(s):  
Khac-Khiem Nguyen ◽  
Trong-Thang Nguyen
Keyword(s):  
Direct Current ◽  
Pid Controller ◽  
Closed Loop ◽  
Dc Motor ◽  
State Equation ◽  
Dynamic State ◽  
Estimation Model ◽  
Loop Control ◽  
Quality Of Control

<p>This research aims to propose an algorithm for controlling the speed of the Direct Current (DC) motor in the absence of the sensor of speed. Based on the initial mathematical model of DC motor, the authors build the dynamic state equation of DC motor, and then build an estimation model to determine the speed of the DC motor without a sensor. The advantages of the proposed method are demonstrated through the closed-loop control model using the PID controller. In order for the results to be objective, we assume that the parameters of the DC motor in the estimation model are not known correctly. The results show that the quality of control in the absence of a sensor is equivalent to the case with the sensor.</p>

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