scholarly journals TO CONSTRUCTING AN ADAPTIVE COVER MODEL

2021 ◽  
pp. 47-53
Author(s):  
A. Vorotyncev
Keyword(s):  
Growth And Development ◽  
Root Biomass ◽  
Moisture Transfer ◽  
Plant Cover ◽  
Environmental Parameters ◽  
Optimal Distribution ◽  
Adaptive Model ◽  
Growth Functions ◽  
General Terms ◽  
Reproductive Biomass

A mathematical model for optimizing the growth and development of plant cover is investigated. For constant environmental parameters (humidity, soil and plant temperature), a balanced optimal distribution of photosynthetic assimilates was found by the choice of growth functions and the ratio of leaf and root biomass in explicit general terms, maximizing its reproductive biomass at the end of 3 phases of growth and development of plant cover. The expressions obtained are meaningfully interpreted and can be considered as the basis for an adaptive model of plant productivity and moisture transfer in soil in a constant or slowly changing environment.

scholarly journals Productivity Trends in the Manufacturing Industries

1978 ◽  
Vol 17 (1) ◽  
pp. 44-65
Author(s):  
Aftab Ahmad Cheema
Keyword(s):  
Quantitative Measure ◽  
Productive Efficiency ◽  
Point Of View ◽  
Manufacturing Industries ◽  
Optimal Distribution ◽  
General Terms ◽  
The Social ◽  
Principal Factors ◽  
Factors Of Production ◽  
Productivity Gains

This paper attempts to provide empirical evidence on inter-industry differentials in productivity levels and their growth rates, and the distribution of productivity gains among the principal factors of production" i.e. labour and capital. Hardy any work has been done in Pakistan on providing a satisfactory quantitative measure of productive efficiency of the factors of production in the manufacturing industries. A study of this kind should be important not only from the economic but also from the social point of view because an optimal distribution of total ,gains in productivity is basically an empirical question and can not be discussed in general terms.

Growth Characteristics of Selected Dinitroaniline-Resistant and -Susceptible Goosegrass (Eleusine indica) Population

1995 ◽  
Vol 9 (3) ◽  
pp. 561-567 ◽  
Author(s):  
James R. Harris ◽  
Billy J. Gossett ◽  
Joe E. Toler
Keyword(s):  
Growth And Development ◽  
Reproductive Development ◽  
Field Studies ◽  
Growth Characteristics ◽  
Replacement Series ◽  
Relative Growth ◽  
Eleusine Indica ◽  
Reproductive Biomass ◽  
Vegetative Biomass ◽  
Dinitroaniline Herbicides

Growth and development of selected dinitroaniline-resistant (DR) and -susceptible (DS) goosegrass populations were compared in field studies in replacement series, in association with cotton, and under noncompetitive conditions. The DR ‘Florence’ (FR) and DS ‘Orangeburg’ (OS) populations were similar in competitiveness as indicated by relative yields (RY) and relative crowding coefficients (RCC) for vegetative and reproductive biomass production in a replacement series. Relative growth of the FR and DS ‘Anderson’ (AS) populations in replacement series was similar when vegetative biomass was considered, but reproductive biomass of the AS population declined as proportion of FR population increased. RCC values also indicated that the FR population interfered with reproductive development of the AS population. In field studies, the FR population produced greater vegetative biomass than either DS population, while similar reproductive biomass occurred for the FR and OS populations. Inflorescence dry weights were greater for the FR than the AS population under noncompetitive conditions and in cotton, but were greater for the AS population in replacement series studies. The competitiveness of DR and DS goosegrass biotypes appears to be more related to growth characteristics of individual populations than to response to dinitroaniline herbicides.

scholarly journals Effect of cadmium metal on barley (Hordeum vulgare) growth and development

2021 ◽  
Vol 304 ◽  
pp. 03017
Author(s):  
Zafar Abdikulov ◽  
Marufjon Ergashev
Keyword(s):  
Hordeum Vulgare ◽  
Growth And Development ◽  
Root Biomass ◽  
Metal Ion ◽  
Control Plant ◽  
Cadmium Accumulation ◽  
Dry Mass ◽  
Barley Plant ◽  
Cadmium Metal ◽  
Metal Treatment

In this study, the effect of cadmium metal ion to 7, 14 and 21day after germination (DAG) autumn barley samples under laboratory condition is investigated. We determined the biomass of plant organs and the amount of cadmium accumulation in above-ground organs at germination (7 DAG), 2-leaf (14 DAG), 3-leaf (21DAG) stages. The results showed that the dry mass of 7, 14 and 21 DAG barley plant was decreased under cadmium metal treatment. However, the root biomass did not change compared with control plant. It is also observed that the 21 DAG plant accumulated around 2.4 and 5.6 times more cadmium than the 14 DAG and 7 DAG plants respectively.

Effective Fetch and Duration of Tropical Cyclone Wind Fields Estimated from Simultaneous Wind and Wave Measurements: Surface Wave and Air–Sea Exchange Computation

2017 ◽  
Vol 47 (2) ◽  
pp. 447-470 ◽  
Author(s):  
Paul A. Hwang ◽  
Yalin Fan
Keyword(s):  
Surface Wave ◽  
Wind Field ◽  
Wind Wave ◽  
Environmental Parameters ◽  
Wind Fields ◽  
Growth Functions ◽  
Wave Measurements ◽  
Hurricane Wind ◽  
Wave Development ◽  
Energy And Momentum

AbstractSimultaneous wind and wave measurements have been obtained inside tropical cyclones in several hurricane hunter missions. Analyses of these datasets show that the surface wave development inside hurricanes follows essentially the same duration- and fetch-limited growth functions established in steady wind forcing conditions. This paper explores the application of several parameterization functions of wind-wave systems to quantify the energy and momentum exchanges inside hurricanes from an initially limited input of the environmental parameters, such as the wind field alone. A critical prerequisite to applying the wind-wave growth functions is the knowledge of fetch and duration for the hurricane wind field. Four sets of simultaneous wind and wave measurements from hurricane hunter missions are analyzed to derive a fetch and duration scaling model. Time series of 2D hurricane wind fields can then be used to investigate the detailed spatial distribution and temporal evolution of the sea state parameters and the associated air–sea energy and momentum exchanges following the hurricane development.

scholarly journals Investigation of a model of probabilistic automata for detecting changes in the state of resources of autonomous measurement systems

2020 ◽  
pp. 58-64
Author(s):  
A.V. Skatkov ◽  
◽  
A.A. Bryukhovetsky ◽  
D.V. Moiseev ◽  
◽  
...  
Keyword(s):  
Communication Channel ◽  
Environmental Parameters ◽  
The State ◽  
Adaptive Model ◽  
Probabilistic Automaton ◽  
Algorithmic Approach ◽  
Measurement Systems ◽  
Adaptive Correction ◽  
Self Tuning ◽  
Intelligent Technology

An algorithmic approach based on the methods of adaptive intelligent technology for monitoring the state of objects of computer systems is considered. The approach is focused on detecting changes in the state of controlled resources of autonomous information and measurement systems: communication channel, processor, memory, and battery. An adaptive model is presented using a Bayesian classifier for estimating changes in the state of resources of autonomous information and measurement systems. The model is based on a probabilistic automaton with adaptive self-tuning. The paper describes an approach that allows increasing the duration of continuous operation of the system for monitoring environmental parameters. This approach is based on adaptive correction of primary meter readings in the event of a decrease in their accuracy due to degradation failures.

scholarly journals JENIS-JENIS MAKROALGA EPIFIT PADA BUDIDAYA (Kappaphycus alvarezii) DI PERAIRAN TELUK GERUPUK LOMBOK TENGAH

2018 ◽  
Vol 18 (2) ◽  
Author(s):  
Mursal Gazali ◽  
Mardiana Mardiana ◽  
Menip Menip ◽  
Bangun Bangun
Keyword(s):  
Growth And Development ◽  
Negative Impact ◽  
Kappaphycus Alvarezii ◽  
Environmental Parameters ◽  
Research Data ◽  
Optimal Range ◽  
Epiphytic Algae ◽  
Cultivation Methods ◽  
Chaetomorpha Linum ◽  
Spyridia Filamentosa

Abstract:Epiphytes are organisms that attach to other organisms to support their growth and development. One type of epiphytes that has a negative impact on the host is algae (macroalgae). This algae is a competing organism for cultivation algae (Kappaphycus alvarezii). This research was conducted From May to October 2017 in Gerupuk Bay, Central Lombok. The aim of the research is to find out the types of macroalgae epiphytes on macroalgae kappaphycus alvarezii. This research was conducted using exploratory methods by taking seaweed samples overgrown with epiphytes, the research data obtained were descriptive analisys. As supporting data, environmental parameters are measured including temperature, pH, salinity, DO, phosphate, and NH4. Based on the results of exploration found 13 species of epiphytic algae in kappaphycus alvarezi cultivation, namely: Chaetomorpha linum, Chaetomorpha linum, Cladophora dalmatica, Acanthophora spicifer, Batrachospermum sp, Callithamnion sp., Caulachantus ustulatus, Ceramium sp, Hypnea spinnosa, Hypnea spinella, Hypnea sp, Polysiphonia brodiaei , Spyridia filamentosa. The type of epiphytes found that grows in both cultivation methods and some others are found only in one method. Meanwhile, data on environmental parameters are in the optimal range for macroalgae growth.This data is expected to be used as a consideration for the cultivateddevelopment in the Gerupuk Bay cultivation center. Keywords : Macroalgae, Epiphytes, Aquaculture,  Kappaphycus alvarezii

scholarly journals Plastic response to early shade avoidance cues has season-long effect on Beta vulgaris growth and development

2020 ◽  
Author(s):  
Albert Adjesiwor ◽  
Joseph Ballenger ◽  
Cynthia Weinig ◽  
Brent E. Ewers ◽  
Andrew Kniss
Keyword(s):  
Sugar Beet ◽  
Leaf Area ◽  
Beta Vulgaris ◽  
Growth And Development ◽  
Root Biomass ◽  
Resource Competition ◽  
Carbon Allocation ◽  
Leaf Biomass ◽  
Leaf Stage ◽  
True Leaf

Early emerging weeds are known to negatively affect crop growth but the mechanisms by which weeds reduce crop yield are not fully understood. In a 4-yr study, we evaluated the duration of weed-reflected light on sugar beet (Beta vulgaris L.) growth and development. The study included an early-season weed removal series and a late-season weed addition series of treatments arranged in a randomized complete block, and the study design ensured minimal direct resource competition. If weeds were present from emergence until the two true-leaf sugar beet stage, sugar beet leaf area was reduced 22%, leaf biomass reduced 25%, and root biomass reduced 32% compared to sugar beet grown season-long without surrounding weeds. Leaf area, leaf biomass, and root biomass were similar whether weeds were removed at the two true-leaf stage (approximately 330 GDD after planting) or allowed to remain until sugar beet harvest (approximately 1240 GDD after planting). Adding weeds at the two true-leaf stage and leaving them until harvest (~1240 GDD) reduced sugar beet leaf and root biomass by 18 and 23%, respectively. It appears sugar beet responded to weed presence by adjusting carbon allocation and leaf orientation to optimize light interception.

scholarly journals IoT Based Automated Sericulture System

2019 ◽  
Vol 8 (2) ◽  
pp. 6489-6492
Keyword(s):  
Light Intensity ◽  
Mobile Application ◽  
Growth And Development ◽  
Environmental Parameters ◽  
Light Power ◽  
Internet Connection ◽  
Data Assessment ◽  
Environmental Variations

Sericulture denotes to the rearing of silkworm to produce silk. Parameters like Temperature, Humidity and Light intensity are the important factors in the progression of silkworms and suitable encouraging must to be done according to the requisites in every stage. Environmental variations assume as the important part in the growth and development of silkworm. Sericulture is the important occupation in India and the techniques used by the agriculturists are yet outdated. Hereafter there is the need of developing modernization in sericulture cultivate. This endeavor gives a thought of providing automation in sericulture cultivate. The model goals at making use of developing technology that is IOT and smart Sericulture using automation. Observing environmental parameters of the silkworm rearing house is the most important aspect to improve vintage of the silk. The specialty of this model comprises enhancement of a system which can observe temperature, humidity, light power through sensors using NodeMCU and in case of any variations in the parameters send a notification on the user mobile application using internet connection. This system permits for data assessment and scheduling to be programmed through the arduino IDE software.

scholarly journals Вологоперенос в багатошарових перев'язочних засобах

2019 ◽  
Vol 126 (5) ◽  
pp. 63-71
Author(s):  
Г. В. Щуцька ◽  
Н. П. Супрун
Keyword(s):  
Wound Dressing ◽  
Moisture Transfer ◽  
Experimental Studies ◽  
Environmental Parameters ◽  
Raw Material ◽  
Wound Dressings ◽  
Practical Significance ◽  
Exhaust Emission ◽  
Material Surface ◽  
Additional Material

Prediction on the base of analysis of the laws of moisture transfer the property of multilayer packages of wound dressing to carry out the transfer of drugs and metabolic fluids in such systems.In the course of experimental studies of penetration of moisture through the packages of wound coatings, in which in different variants of the arrangement of used samples with different raw material composition and density (nonwoven cotton fabrics and linen fabric), were determined parameters of distribution of the liquid and the dimensions of the wetted zone in the upper, lower and middle layers.It has been found that, starting with a certain thickness, most of the liquid accumulates within the package, which changes the general shape of the wetting zone. The surfaces of wetted zones for different package variants, which show a fairly pronounced maximum inside the material, are obtained. The analysis of the dynamics of the change of the wetted zone surface allowed to formulate the problem of determining the location of additional material in the multilayer wound covering. This gives the opportunity to accumulate the highest moisture content inside the material package, which improves the quality of wound dressings. A study on the effects of additional wetting in multi-layer packets of textile medical materials has revealed for the first time the effect of increasing the concentration of fluid inside such systems, which we called "paradox of internal concentration". This effect appear in the fact that at certain ratios of discrete environmental parameters, the maximum propagation of the liquid occurs not on the material surface, but at a certain depth, in the place of location of the material of high density. The appearance of the effect is determined by the parameter that binds the geometric properties of the material and the discrete parameters of the liquid passing. Practical significance. The investigated processes of wetting of multilayer dressing materials can be used to predict conditions of their real functioning, proceeding from the requirements of operational situation. This allows solving problems of durability of bandages. The criterion of longevity may be the prevention of the exhaust outlet to the surface or the restriction of the exhaust emission area on the outer surface of the wound dressing in certain volumes.

Exposure of Cu and Mn to Cicer arietinum L. VAR. BGD‐72 seeds induces morphological and biochemical changes in the plant

2013 ◽  
Vol 3 (1) ◽  
pp. 31-36
Author(s):  
Sazada Siddiqui
Keyword(s):  
Cicer Arietinum ◽  
Growth And Development ◽  
Root Biomass ◽  
Redox Reactions ◽  
Normal Growth ◽  
Tolerance Index ◽  
Cellular Redox ◽  
Chl A ◽  
Cicer Arietinum L ◽  
Mn Concentration

Copper (Cu) and Manganese (Mn) are micronutrients that are essential for normal growth and development of the plants. These transition metals are involved in cellular redox reactions. In the present study effect of various concentrations (Ck, 25, 50, 75, 100 and 125ppm) of Cu and Mn on the chlorophyll content, catalase (CAT) activity, malonedialdehyde (MDA) level, root biomass and tolerance index was investigated in 25 days old seedlings of Cicer arietinum L. Effect on morphological parameters such as seed germination and radicle length was investigated in 5 days old seedlings. At higher concentrations, Cu and Mn resulted in loss of the photosynthetic pigments (Chl a and Chl b). CAT activity significantly in root and shoot with the increase in Cu and Mn concentration as compared to control (Ck=untreated) plants. A similar trend was observed in MDA activity in leaves. Combination of Cu and Mn exhibited additive effect on these parameters.

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