Uniformity coefficient

Continued part 1, part 2 of ebook "Group theory applied to chemistry" provides readers with contents including: Chapter 6 - Interactions; Chapter 7 - Spherical symmetry and spins; Appendix A - Character tables; Appendix B - Symmetry breaking by uniform linear electric and magnetic fields; Appendix C - Subduction and induction;...

155p dangsovu 20-10-2023 9 4   Download

The changes in the main structural, functional, fluorescent, and cytometric indicators of diatom microalgae Phaeodactylum tricornutum (Bohlin, 1897), Nitzschia sp., and Skeletonema costatum (Cleve, 1873) under different light growth conditions were analyzed; the potential of their application as possible indicators for monitoring algae physiological state was evaluated.

11p tudichquannguyet 29-11-2021 10 1   Download

The dynamic response to variable magnitude moving distributed masses of simply supported non-uniform Bernoulli–Euler beam resting on Pasternak elastic foundation is investigated in this paper. The problem is governed by fourth order partial differential equation with variable and singular coefficients. The main objective of this work is to obtain closed form solution to this class of dynamical problem.

16p nguaconbaynhay11 07-04-2021 7 1   Download

Water logging and low application efficiency are main problems inherent with surface irrigation. The methods were surface, surface drip and subsurface drip irrigation with three level of irrigation 100, 80, 60% of potential evapo-transpiration were compared and contour map of soil moisture patterns were analysed for corn in two times; one before irrigation, and other at 48 h after irrigation. The distribution of water in soil profile for potato crop by subsurface drip irrigation system (SDI) studied and it was observed uniform and more yield for all treatments.

14p gaocaolon9 22-12-2020 23 1   Download

The reference marker set (30 markers) was used to evaluate the genetic diversity and DNA fingerprinting of 19 standard reference rice varieties. The results showed the similarity coefficient of 19 varieties varied from 0.04 to 0.548. At the genetic similarity coefficient of 0.1, the 19 rice varieties divided into two main groups. Group one included 3 varieties: DH1, DH5, DH13. Group 2 included the remaining 16 varieties. Inside group two, phylogenetic tree divided into two main branches at the genetic similarity coefficient of 0.3.

7p nguyenxuankha_bevandan 14-08-2020 19 2   Download

Testing of agricultural sprinklers is necessary to find the optimum field operating conditions with minimum cost while satisfying design water distribution criteria. In the present study two twin-nozzle agricultural sprinklers were tested in field under ten different operating pressures ranging from 1.6 kg/cm² to 3.5 kg/cm². In each experiment sprinkler discharge rate, nozzle pressure, radius of throw, and water distribution pattern around the sprinkler were observed. The average discharge coefficients of the two sprinkler nozzles were determined.

12p angicungduoc6 22-07-2020 10 3   Download

The field experiments were conducted to evaluate the performance of drip irrigation systems at protected cultivation unit of College of Horticulture and Forestry, Jhalawar, Rajasthan during 2013-14 and 2014-15. The performance of drip system was evaluated on the basis of parameters like average discharge (Qavg), field emission uniformity (EUf), design emission uniformity (EUd), application efficiency (EUa and Ea), coefficient of variance (Cv) and statistical uniformity coefficient (SUC).

6p angicungduoc6 20-07-2020 7 1   Download

For the establishment of the distinctness among 31 accessions of Oryza glaberrima, eight morphological traits following Distinctness, Uniformity and Stability test (DUS) studied. Out of 31 accessions studied, two accessions viz., EC861804, EC861805 were found to be highly distinct as they possessed distinct traits namely purple split ligule, medium green leaves, erect flag leaf, presence of awn along with lodging tolerance indicating their usefulness as donors for crop improvement programmes. Analysis of variance revealed significant differences for all the characters studied.

16p quenchua6 15-06-2020 11 2   Download

Drip fertigation is the technique of application of suitable quality of water for irrigation purpose along with fertilizer to provide water and fertilizer efficient condition for growth and development of plants. A study on field evaluation of drip fertigation system for Okra crop was conducted under sandy loam soil conditions of Ludhiana district of Punjab state (India).

6p quenchua6 15-06-2020 18 2   Download

Drip Irrigation Method is the best method that has been used in the world among the other irrigation methods because of its good and high uniformity. This method distributes water to the field using the pipe network and transforms it from the pipe network to the plant by emitters. A field experiment was conducted at experimental farm of college of Technology, G.B.P.U. A & T, Pantnagar, Uttarakhand to evaluate the performance of drip irrigation system installed for okra crop.

8p quenchua4 06-04-2020 17 1   Download

Drip system of irrigation provides enhanced water use efficiency and water application efficiency up to 90% whereas it is about 70% for sprinklers and 45% for flood method of irrigation. In this method as water is supplied directly to crop root zone through drippers, water losses in distribution and conveyance are far lower than those under flood irrigation. A case study was conducted regarding performance evaluation of drip irrigation system used for growing brinjal in the village Shivpur, district Mungeli in Chhattisgarh.

7p caygaocaolon4 04-04-2020 18 1   Download

A field study was undertaken to evaluate the performance of 4 lph capacity inline drip emitter in farmer’s field at 0.75 kg/cm2 and 1.00 kg/cm2 operating pressure. The efficient water application through drip irrigation is mainly depends upon the hydraulic parameters of the system, which includes the effect of pressure on coefficient of manufacturer variation, emitter flow variation, emission uniformity, uniformity coefficient, application efficiency and distribution efficiency.

8p chauchaungayxua4 18-03-2020 14 1   Download

Application of fertilizers plays a vital role in crop production system. The basic performance parameter for a fertilizer distributor was uniformity of distribution over a wide range of conditions. In India traditionally manure was distributed with the help of fork and other mechanical device which was very tedious and slow process. The study of the previous work done on fertilizer applicators shows that manually operated, animal drawn and tractor drawn spreader has been developed in India to achieve uniformity in application with minimum time and drudgery of labor.

10p caygaocaolon3 09-03-2020 11 1   Download

Gladiolus is a very popular flowering plant grown for its elegant cut spike. Presently, the Gladiolus corms are planted manually which is time and labour intensive process. It also involves considerable amount of drudgery. Till date very little work on mechanized planting of corms has been reported. In order to carry out the panting operation in specific time and to mechanize this operation for Gladiolus crop, a cup-chain type metering mechanism was developed and its performance was evaluated in linear soil bin.

10p caygaocaolon3 27-02-2020 19 1   Download

The study was conducted at Technology Park (Plasticulture Farm) of CTAE, Udaipur, Rajasthan to evaluate performance of automated and conventional drip system for okra crop during year 2019. The Uniformity Coefficient (CU), Distribution Characteristic (DC) and Emission Uniformity (EU) were found to be highest at the head and decreases with increase in distance along the lateral for both irrigation systems. It was found that the average values of all evaluation parameters except DC, were found to be highest for automated drip system.

4p trinhthamhodang3 22-02-2020 15 0   Download

In modern agricultural systems, chemical-based weed control is becoming difficult to ignore (usage of herbicides) in weed management because of its effectiveness to accomplish weed control and at the same time, increases yield largely. However, both economic and ecological attention the application of herbicide should be optimum.

5p chauchaungayxua3 07-02-2020 9 1   Download

Now day’s scarcity of labour is creating problem during agricultural operation because in agriculture more labour is required. Pests and weed problems, in crop production are serious both in rain fed and irrigated farms in Chhattisgarh.

11p nguaconbaynhay3 07-02-2020 31 0   Download

In hydrologic studies rainfall and soil system are two important considerations. It is always desirable to conduct these studies under field conditions in order to represent actual conditions. Rainfall simulation offers a viable alternative to conduct hydrologic studies under controlled conditions. Various types of rainfall simulators are already available for this purpose, but most of them are fixed type and can be used in a laboratory. In such studies a tilting flume filled with soil is used as the test plot.

10p nguaconbaynhay3 07-02-2020 9 0   Download

Cotton, Recombinant inbred lines (RIL), phenotypic (PCV) and There is a limited genetic variability available in genetic resources of upland cotton (Gossypium hirsutum L.), which restricted the breeding activity. The objective of present study was evaluating the genetic variability in RIL population derived through intraspecific hybridization between RHAP 12 and RHAP 15 genotypes. The 222 RIL were evaluated during kharif 2018 at University of Agricultural Sciences Dharwad.

11p nguaconbaynhay3 07-02-2020 20 0   Download

Traditional type fertilizer broadcasters were with constant opening with gravity flow method which was showing high variation in discharge quantity of fertilizer between the rows and this lead to under and over dosage. A battery operated variable rate fertilizer broadcaster was developed and it consisting of storage tank, metering unit, spreading unit and variable rate controller unit was developed. To standardize the metering mechanism for the fertilizer applicator, a study was conducted on the existing fertilizer metering devices.

10p quenchua2 15-12-2019 11 0   Download