scholarly journals Density and shape characteristics of Agria tubers cultivated at different conditions

2012 ◽  
Vol 51 (No. 1) ◽  
pp. 1-6
Author(s):  
J. Blahovec
Keyword(s):  
Density Gradient ◽  
Potato Variety ◽  
Cultivation Conditions ◽  
Variable Parameters ◽  
Irrigation Regimes ◽  
The Individual ◽  
Shape Characteristics ◽  
Individual Tuber

Potato variety Agria was cultivated in different fertilising and/or irrigation regimes. Individual tuber dimension and the individual tuber density were studied two months after the harvest with aim to find some potential relation between tuber density and its shape. The stem-bud density gradient was also studied by determination the density of the stem, middle and bud parts of the individual tubers. The results of the measurements brought information on relatively variable parameters that slightly depended on the cultivation conditions.

scholarly journals Impact induced mechanical damage of Agria potato tubers

2012 ◽  
Vol 51 (No. 2) ◽  
pp. 39-43 ◽  
Author(s):  
J. Blahovec
Keyword(s):  
Potato Variety ◽  
Impact Test ◽  
Mechanical Damage ◽  
The Other ◽  
Pig Slurry ◽  
Potato Tubers ◽  
Irrigation Regimes ◽  
Other Hand ◽  
Flat Side

Potato variety Agria was cultivated in different fertilisation and/or irrigation regimes. Tuber damage after impact was studied two months after the harvest with aim to find some relation between the regime of cultivation and impact test tuber damage. It was found that tuber cracking and/or crushing belongs to the most frequent mechanisms of damage masking usual bruising in many cases. Most severe tuber cracking was observed for cultivation with irrigation and classical methods of fertilisation. On the other hand, bruising was most frequent in case without any irrigation and fertilisation and in cases used for fertilisation the pig slurry. In every cultivation regime the bruising was more pronounced in narrower tuber side in comparison to the wider flat side.

Generating cheongsam custom pattern based on fuzzy set theory

2020 ◽  
Vol 32 (5) ◽  
pp. 725-741
Author(s):  
Bilian Cheng ◽  
Zheng Liu ◽  
Guang Chen ◽  
Fengyuan Zou
Keyword(s):  
Membership Function ◽  
Fuzzy Membership ◽  
Fuzzy Membership Function ◽  
Pattern Design ◽  
Modified Model ◽  
Content Type ◽  
Quantification Method ◽  
Primary Body ◽  
The Individual ◽  
Shape Characteristics

PurposeThe purpose of this paper is to quickly acquire a cheongsam pattern using the fit quantification method to meet individual fit requirement.Design/methodology/approachBased on the cheongsam pattern database including basic patterns and graded patterns, we defined the main control parts of the cheongsam pattern by analyzing the pattern modification. Combining human body shape characteristics, this paper utilized the fuzzy membership function to quantify the cheongsam fit, and defined the modified model of the cheongsam control part.FindingsThe fitness quantification method can provide suitable primary body characteristics for custom-pattern and helps to produce customized cheongsam quickly.Originality/valueThis paper proposed a method of generating customized cheongsam pattern based on fitness quantification by using fuzzy membership function. The method combined the industry pattern design experience and mathematic knowledge to generate the individual fit pattern rapidly. It can be applied in cheongsam customization.

Comparative study of the force action of harvester work tools on potato tubers

2019 ◽  
Vol 65 (No. 3) ◽  
pp. 85-90
Author(s):  
Alexei Sibirev ◽  
Alexandr Aksenov ◽  
Alexei Dorokhov ◽  
Andrei Ponomarev
Keyword(s):  
Field Studies ◽  
Potato Tubers ◽  
Cultivation Conditions ◽  
Root Crops ◽  
Negative Impacts ◽  
Working Bodies ◽  
The Individual ◽  
Separation Devices ◽  
The Impact

The quality of the separation of root crops, onions and potatoes is known to primarily depend on the cultivation conditions. As a rule, these cultures are cultivated in mechanically light soils in order to improve the quality of separation, as well as to reduce the traction resistance of the harvester when extracting the root crops from the soil. When harvesting the root crops, it is very important to maintain the soil in a loose (light) state to improve the quality of the separation. Due to the fact that in digging up the root crops, there is a joint flow of strong soil lumps to the separating working bodies, which are difficult to separate on the slit working bodies of the harvester, which increases damage to the root crops when interacting with the soil lumps, the commercial quality of the products is subsequently deteriorated. The existing potato harvesters damage the commercial products as a result of the interaction of the potato tubers with each other, with the working bodies and with the soil lumps. However, the greatest percentage of damage to potato tubers occurs as a result of their interaction with the working bodies of the harvester. Field studies were conducted to determine the places of the greatest impact of the individual working bodies of the potato harvesters and to carry out subsequent actions for the elimination of these negative impacts in the design of the harvesters. This article presents a methodology for conducting field studies on the assessment of the impact of the working bodies on the scale of damage to potato tubers when harvesting. The results of the comparative studies of the impact of the working bodies of modern potato harvesters, which damage the potato tubers as a result of the interaction with them are presented. We have determined that the greatest scale of impact on the potato tubers during the mechanised harvesting is observed as the transition from the main elevator to the secondary separation devices takes place, irrespective of the design and technological scheme of the harvester, and reaches its minimum value from 6.5 N for the Bolko harvester to 21 N for the AVR-Spirit-6200 harvester.

FEATURES OF AUTONOMIC REGULATION OF THE CARDIOVASCULAR SYSTEM IN HUMAN LATE ONTOGENESIS

2020 ◽  
pp. 74-81
Author(s):  
В. П. Нестеров ◽  
А. И. Бурдыгин ◽  
К. Б. Иванов ◽  
С. М. Коротков ◽  
И. В. Шемарова ◽  
...  
Keyword(s):  
Cardiovascular System ◽  
Physiological Mechanism ◽  
Individual Characteristics ◽  
Variable Parameters ◽  
Autonomous Regulation ◽  
Human Ontogenesis ◽  
Sympathetic Regulation ◽  
Pulse Waves ◽  
The Individual ◽  
Directed Change

С помощью метода артериальной пьезопульсометрии выполнены статистический и спектральный анализы вариабельных параметров ( VPP и TNN ) пульсовых волн АД крови у пациентов 18-85 лет. С высокой точностью оценены индивидуальные особенности автономной (вегетативной и нейроэндокринной) регуляции мышечных эффекторов (МЭ) сердечно-сосудистой системы (ССС) у пожилого мужчины (75 лет) и молодой женщины (20 лет). Эти данные, а также результаты сравнительного исследования пациентов разного возраста позволили выявить определенную закономерность направленного изменения симпатоадреналовой регуляции МЭ ССС в онтогенезе человека. Сделан вывод, что у людей в процессе жизни происходит перестройка физиологического механизма автономной регуляции МЭ ССС, направленная на замену краткосрочной симпатической регуляции у молодых людей на более эффективную и устойчивую регуляцию гуморальными катехоламинами у пожилых людей. Using the method of arterial piezopulsometry, statistical and spectral analyzes of variable parameters ( VPP and TNN ) of pulse waves of blood pressure in patients aged 18 to 85 years were performed. The individual characteristics of the autonomous (vegetative and neuroendocrine) regulation of the muscular effectors (ME) of the cardiovascular system (CVS) in an elderly man (75 years old) and a young woman (20 years old) were estimated with high accuracy. These data, as well as the results of a comparative study of patients of different ages, made it possible to identify a certain pattern of directed change in the sympathoadrenal regulation of ME CVS in human ontogenesis. It is concluded that in the course of their lives, people undergo a restructuring of the physiological mechanism of the autonomous regulation of their ME CVS, aimed at replacing short-term sympathetic regulation in young people with more effective and more stable regulation by humoral catecholamines in elderly.

scholarly journals Role of cultivation conditions in potato sloughing as indicated by CPEM method

2008 ◽  
Vol 53 (No. 9) ◽  
pp. 403-412 ◽  
Author(s):  
A. Hejlová ◽  
J. Blahovec
Keyword(s):  
Potato Variety ◽  
Linear Models ◽  
Cooking Time ◽  
Cultivation Conditions ◽  
Stable Variety ◽  
Starting Point ◽  
Growing Conditions ◽  
Different Levels ◽  
Effective Mass Method

The new CPEM (cooked potato effective mass) method was used to study the sloughing of a potato variety grown in two successive years in six regimes given by different levels and forms of fertilisation and irrigation. The sloughing process is characterized by the cooking time, i.e. the starting point of disintegration, and by the speed of disintegration. Both parameters are also evaluated in dependence on tuber density in linear models of cooking and disintegration stages. Effects of different cultivation regimes were observed in both stages. The sloughing sensitivity to tuber density expressed via the cooking time seemed to be a relatively stable variety parameter independent of growing conditions. The fertilisation reduced the level of sloughing, i.e. higher cooking time values (<i>P</i> < 0.0023), and at the same time lower disintegration rates (<i>P</i> < 0.006) were indicated for fertilised tubers. No influence of irrigation was observed in our study.

scholarly journals Soluble C3 proconvertase and convertase of the classical pathway of human complement. Conditions of stabilization in vitro

1985 ◽  
Vol 226 (2) ◽  
pp. 429-436 ◽  
Author(s):  
M B Villiers ◽  
N M Thielens ◽  
M G Colomb
Keyword(s):  
Density Gradient ◽  
Binding Protein ◽  
Sucrose Density Gradient ◽  
Density Gradient Ultracentrifugation ◽  
Classical Pathway ◽  
Human Complement ◽  
Proteolytic Fragment ◽  
The Individual

Soluble classical-pathway C3 convertase and proconvertase were prepared from purified C4b-C2ox complex in the presence of Ni2+; the two complexes, stable for at least 15 h at 4 degrees C, were isolated by sucrose-density-gradient ultracentrifugation. The C3 convertase alone was able to cleave C3, and its decay was accelerated in the presence of C4-binding protein. The individual roles of Ni2+ and I2 treatment of C2 in the stabilization of the complexes seemed to be different and additive. 63Ni2+ binding coupled to h.p.l.c. analysis showed that 63Ni2+ bound only to the C2ox proteolytic fragment a (1 mol/mol) with a Kd of 26 microM. Competition studies between Ni2+ and Mg2+ indicated that only half of the Ni2+ bound to the C3 convertase was removed by Mg2+, whereas, in the same conditions, Ni2+ bound to C2ox proteolytic fragment a was not displaced, suggesting the presence of two sets of sites on the convertase. EDTA prevented the formation of both C3 convertase and proconvertase; EDTA had no effect on the preformed C3 convertase, whereas it dissociated the preformed proconvertase.

scholarly journals Effects of Seed Tuber Size and Planting Density on the Tuber Number and the Individual Tuber Weight of Plants Grown from Potato Microtubers in Fields

2011 ◽  
Vol 80 (3) ◽  
pp. 292-301
Author(s):  
Shogo Tsuda ◽  
Motoyuki Mori ◽  
Akira Kobayashi ◽  
Akiko Takada ◽  
Norikazu Takada ◽  
...  
Keyword(s):  
Seed Tuber ◽  
Tuber Size ◽  
Planting Density ◽  
Tuber Number ◽  
Tuber Weight ◽  
The Individual ◽  
Individual Tuber

Shelf-Life of Prepeeled Potato Cultivated, Stored, and Processed by Various Methods

1998 ◽  
Vol 61 (5) ◽  
pp. 591-600 ◽  
Author(s):  
RAIJA T. AHVENAINEN ◽  
EERO U. HURME ◽  
MARGARETA HÄGG ◽  
EIJA H. SKYTTÄ ◽  
EIRA K. LAURILA
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Vitamin C ◽  
Shelf Life ◽  
Potato Variety ◽  
Sensory Quality ◽  
Microbiological Quality ◽  
Aerobic Bacteria ◽  
Cultivation Conditions

The effects of cultivation conditions, winter storage, peeling method, browning prevention Chemicals replacing sodium bisulfite, and packing methods on the sensory, nutritional and microbiological quality of pre-peeled potato were examined. Two different cultivation lots of the potato variety Van Gogh were used. Cultivation and harvesting conditions and peeling method were the most important facts reducing the sensory quality, especially the appearance, of prepeeled and sliced potatoes. Cooking and baking of potatoes decreased the appearance defects detected in raw potatoes. The levels of vitamin C in packaged samples decreased during winter storage. Cooking for 10 min and keeping potatoes at 60°C for 1 h after cooking also decreased the content of vitamin C. In potato samples immediately after treatments aerobic bacteria were present at levels of 400 to 2,950 CFU/g and lactic acid bacteria at levels of 8 to 16 CFU/g. The number of aerobic bacteria did not increase during storage, and the number of lactic acid bacteria increased at the most to 90 CFU/g. Peeling, washing and packaging methods, cultivation conditions, and winter storage did not have important effects on the number of microbes present.

Effects of windrowing, irrigation and defoliation of potatoes on silver scurf (Helminthosporium solani) disease

1993 ◽  
Vol 121 (1) ◽  
pp. 47-53 ◽  
Author(s):  
D. M. Firman ◽  
E. J. Allen
Keyword(s):  
Potato Variety ◽  
Field Experiments ◽  
Colletotrichum Coccodes ◽  
Silver Scurf ◽  
Helminthosporium Solani ◽  
Black Dot ◽  
Early Crop ◽  
Irrigation Regimes ◽  
One Year ◽  
Drying Conditions

SUMMARYField experiments with the potato variety Desiree at Cambridge, UK, in 1988–90 examined the effects of windrowing on the development of blemishing diseases during storage on tubers from crops grown with differing irrigation regimes and dates of defoliation and harvest. Irrigation reduced levels of silver scurf (Helminthosporium solani) at harvest in all three years and increased black dot (Colletotrichum coccodes) in one year. Early crop defoliation slightly increased silver scurf at harvest in one year only. Silver scurf developed less during storage at 3 °C than at 7 °C and disease levels on tubers after storage were related to levels present at harvest. The effects of leaving tubers for up to 6 h in a windrow at harvest on silver scurf after storage were small and inconsistent between years despite similar drying conditions. The results suggest that windrowing may be of little practical use in controlling silver scurf during storage.

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