scholarly journals Alternative methodology for the germination test in chemically treated corn hybrid seeds

2021 ◽  
Vol 10 (13) ◽  
pp. e551101321457
Author(s):  
Cristina Rossetti ◽  
Natalia Pedra Madruga ◽  
Nícolas da Conceição de Ávila ◽  
Josiane Cantuária Figueiredo ◽  
Carem Rosane Coutinho Saraiva ◽  
...  

The objective of this work was to identify the most suitable conditions for the evaluation of the germination test in corn seeds through the use of different substrates. Two tests were carried out for the development of the work. In test 1, the hybrid Morgan 30A37 PWV was used in a factorial scheme of 5 substrates with 8 chemical treatments. The seeds were treated industrially with the following insecticides: Inside FS, Inside FS + Maestro FS, Maestro FS, Poncho, Inside FS + BioCoat Corn, Inside FS + Maestro FS + BioCoat Corn and Maestro FS + BioCoat Corn. For test 2, the hybrid used was the FS533 PWV in a factorial scheme of 5 substrates and 5 treatments, in which the seeds received the industrial treatment with the insecticides: Inside FS, Inside FS + Maestro FS, Maestro FS and Poncho. Both tests were submitted to two temperatures (20°C and 25°C) and five substrates (germitest® paper; germitest® paper + sand; germitest® paper + soil; germitest® paper + coal and brown paper). The most suitable substrates for installing the germination test in chemically treated corn seeds were brown pepper and germitest® + charcoal. And the temperature of 20°C is the one that allows the most uniform and rapid development of normal seedlings in the germination test in treated hybrid corn seeds.

2018 ◽  
Vol 4 (1) ◽  
pp. 67-84
Author(s):  
Wahyudin Noor

Abstract Pesantren are often associated with backwardness and traditionalism in everything: facilities, technology, learning methods, and even the curriculum. For now, it seems like the traditional term for pesantren is no longer relevant enough. The pace of movement in the era of renewal marked by the rapid development of technology has demanded pesantren to make adjustments. However, on the one hand, when viewed from the direction of change, the reform efforts pursued by pesantren are not to erase the old tradition, but merely to add something new so that the old tradition and conditions can be maintained while accepting the presence of a new one. On the other hand, the reform efforts undertaken by pesantren have implications for the fact that the typical values of the pesantren are fading away. Abstrak  Pesantren seringkali diasosiasikan dengan keterbelakangan dan tradisional dalam segala hal: fasilitas, teknologi, metode pembelajaran, dan bahkan kurikulumnya. Untuk saat ini, sepertinya istilah tradisional untuk pesantren, sudah tidak lagi cukup relevan. Laju gerak pembaharuan zaman yang ditandai dengan pesatnya perkembangan teknologi telah menuntut pesantren untuk melakukan penyesuaian diri. Kendatipun demikian, di satu sisi, jika dilihat dari arah perubahan, upaya pembaharuan yang ditempuh pesantren tidaklah untuk menghapus tradisi yang lama, tetapi sekadar menambah dengan sesuatu yang baru sehingga tradisi maupun kondisi yang lama bisa dipertahankan sambil menerima kehadiran yang baru. Di sisi yang lain, upaya pembaharuan yang dilakukan pesantren ternyata berimplikasi pada kenyataan akan semakin pudarnya nilai-nilai khas yang dimiliki oleh pesantren.


Author(s):  
Wenyi Yang ◽  
Xueli Wang ◽  
Keke Zhang ◽  
Zikan Ke

In the context of the rapid development of urbanization and increasing population mobility in China, the outbreak of COVID-19 has had a significant impact on China’s economy and society. This article uses China UnionPay transaction data and takes Hubei, the worst-hit region by COVID-19 in China, as an example, to conduct empirical analysis using the generalized method of moments (GMM) of the impact of current urbanization patterns on the spread of the epidemic and economic recovery from the perspectives of time, industry, and regional differences. The study found that during the different stages of COVID-19, including discovery, outbreak, and subsidence, the overall impact of urbanization on the economy in Hubei Province was first positive, then became negative, and finally gradually increased. This process had significant industrial and urban heterogeneity, which was mainly manifested in losses in tourism and catering industries that were significantly greater than those in the audio-visual entertainment and digital office industries. Similarly, the recovery speed of large cities was lower than that of small and medium-sized cities. The main reason for these differences is that the one-sided problem of urbanization is more obvious in areas with higher urbanization rates. COVID-19 has drawn attention to the development of urbanization in the future, that is, the development path of one-sided economic resource agglomeration and scale expansion should be abandoned, with greater attention paid to the improvement of service functions and the development of amenities. This transformation is necessary to enhance urban economic resilience and reduce public health risks.


Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8851-8858 ◽  
Author(s):  
Youngbum Kim ◽  
Yongjun Lee ◽  
Hyun Kim ◽  
Shrawan Roy ◽  
Jeongyong Kim

Modification of local exciton emission in monolayer MoS2 by chemical treatments is spatially uneven as revealed by near field imaging.


2017 ◽  
Vol 27 (3) ◽  
pp. 206-216 ◽  
Author(s):  
Juliana F. Santos ◽  
Lynnette M.A. Dirk ◽  
A. Bruce Downie ◽  
Mauricio F.G. Sanches ◽  
Roberval D. Vieira

AbstractObtaining corn hybrid seeds (Zea mays L.) with high vigour depends on the parental lines and the direction of the cross, and this relates to seed desiccation tolerance and composition. This research studied reciprocal crosses between pairs of proprietary, elite parent lines (L1 and L5; L2 and L4) producing hybrid seeds with different qualities attempting to correlate vigour with seed composition, focusing on storage proteins, starch and soluble sugar amounts. Four corn hybrid seed lots produced from reciprocal crosses were compared (HS 15 with HS 51, and HS 24 with HS 42) by assessing germination, vigour, and seedling emergence in the field. Seed composition was assessed in mature, dehydrated seeds. Proteins were extracted, quantified, and analysed by electrophoresis and densitometry. Starch amounts were assessed using a kit and soluble sugars were determined using high performance liquid chromatography with pulsed electrochemical detection. The L1 and L2 lineages, used as female parents, provided seeds with lower vigour; however, the quantification of major protein bands, and sucrose, raffinose and stachyose were similar between seed lot pairs. While both total seed protein and starch varied between reciprocal hybrids for one of the two sets of crosses, the amounts of neither correlated with seed vigour. Interestingly, hybrids with low seed vigour (HS 15, HS 24) accumulated greater amounts of fructose relative to their reciprocal; correlation analysis confirmed these results. We demonstrate different effects on seed vigour dependent on the maternal parent in reciprocal crosses producing hybrid corn seeds. We also show that vigour is negatively correlated with seed reducing sugar contents.


2019 ◽  
Vol 4 ◽  
pp. 23-33 ◽  
Author(s):  
Masuma Mammadovа

The rapid development of information technologies and their penetration into various spheres of human activity cause a sharply increased demand for IT specialists, in many countries of the world far exceeding the supply on them. High rates of technological transformation contribute to the diversification of the IT segment of the labor market, on the one hand, stimulate the disappearance of some and the emergence of new IT specialties, on the other. This creates a discrepancy between the structure of IT-related education and the labor market demand for IT specialists of the required profile and determines the relevance of developing methods for assessing the demand for IT specialties. This article is devoted to the study and solution of the problem of identifying the demand for IT specialties in the absence of accurate and complete information about the situation in the IT market segment. For the assessment of IT specialties and their ranking by the degree of demand in the labor market, the tasks of making individual and group decisions in the context of fuzzy initial information are formulated and solved. The methodological basis of the tasks posed is multi-criteria decision support methods based on fuzzy relations of expert preferences. The proposed approach as a mathematical tool for minimizing the structural imbalance of supply and demand for IT specialties is one of the components of the system of intellectual management of the labor market of IT specialists. The latter is designed to support the adoption of scientifically based management decisions to eliminate the mismatch of supply and demand in the IT segment of the labor market in professional, quantitative and qualitative sections.


2017 ◽  
Vol 16 (3) ◽  
pp. 83
Author(s):  
László Gere ◽  
Ráhel Czirják

A fejlesztéspolitikában ma a „smart” címkével minden vonzóbb, eladhatóbb, a kifejezés sokszor a ’környezetbarát’ vagy ’fenntartható’ szinonimájaként is használatos. A városfejlesztésben az utóbbi idők egyik legfelkapottabb paradigmája, globális szintű versengést indítva mind a városok, mind az érdekelt vállalatok között a kölcsönösen hasznosnak vélt előnyök reményében. A szerzők egyrészt annak jártak utána, miért éppen most virágzott fel a smart city mint fejlesztési paradigma, és milyen tényezők indukálták gyors előretörését. Másrészt a nemzetközi példák bemutatásán keresztül arra a kérdésre keresik a választ, milyen társadalmi hatásokkal járnak ezek a fejlesztések, milyen kihívásokkal kell szembenézni a smart city fejlesztések kapcsán, és vajon a jövőben a fejlesztési szereplők képesek lesznek-e tanulni hibáikból, és tudatosan tervezni a hatások összességével. --- Do smart cities intensify social exclusion? In development policy everything seems to be more attractive and marketable when labelled ‘smart’; the expression is often used even as a synonym for ‘environmentally-friendly’ or ‘sustainable’. Considering urban development projects, smart city development is one of the most popular paradigms, triggering global competition between cities as well as the interested companies, both expecting mutual benefits from the co-operation. The article, on the one hand, tries to reveal, why the smart city paradigm has now started to thrive, and what factors played a part in its rapid development. On the other hand, through the presentation of international practices, the authors intend to answer what social impacts these developments have had, what challenges have the smart city developments met, and whether in the future the actors could learn from their mistakes and consciously take into account the complexity of impacts.


2021 ◽  
Vol 27 (3) ◽  
pp. 7-14
Author(s):  
Almas Musa Kizi Ismailova

The article analyses the main provisions of the peasant reform in Georgia, which had a further impact on the socio-economic development of the landowner peasants of Tiflis and Kutaisi provinces in the last quarter of the 19th – the early 20th centuries. On the basis of archival sources and literature, the author considers the reasons for the difficult economic situation of the Georgian landowners in the period under study. An analysis makes it possible to conclude that the socio-economic relations that had been formed in Georgia determined the contradictions inherent in the capitalist mode of management. On the one hand, the peasant reform contributed to the more rapid development of the capitalist mode of production in the countryside, laying the foundation for economic development in agriculture, the introduction of commercial agriculture, the growth of agricultural productivity, and the maturation of commodity-capitalist relations. On the other hand, the main means of production were in the hands of the landlords, which led to an even greater extensive impoverishment of the landlord peasants. Thus, in Georgia, the remnants of serfdom survived even longer than in the European provinces of the Russian Empire. It is concluded that the reason for these remnants included the backwardness and relatively weak development of capitalist relations in the South Caucasus, in particular, in Georgia.


2020 ◽  
Vol 4 (2) ◽  
pp. 87-105
Author(s):  
Muhammad Solahudin ◽  
Ecep Ismail ◽  
Irwan Abdurrohman

On the one hand, in the environment of the Pesantren salaf community, a kind of environment and tradition is formed which shows its unique, even unique characteristics, which are only understood by the community. Gus Dur, in this case, stated that the Pesantren salaf community is a community that has its own subcultural in the middle of society with the complexity of the problems in it. But on the other hand, there is a very rapid development of science and technology, so it demands pesantren salaf to make changes to adjust to the times, both in terms of the education system, the boarding school environment, institutions, leadership patterns, and others. Therefore, the study contained in the title "Pesantren Salaf: Social Change and Sublimation of Identity (Pesantren Model in West Java)", is very important to be carried out.The purpose of this study is none other than to find the concept of changes that occur in Pesantren salaf in West Java. For more details, they are: 1) uncovering the factors that drive changes in pesantren in West Java; 2) reveal pesantren's efforts in facing the challenges of the times, and 3) find forms of changes that occur in the Pesantren salaf in West Java.This research departs from a thought that social change will occur due to four things. First, Evolution. This theory states that humans as part of a cultured society will naturally develop gradually from simple forms to complex and perfect stages. Second, Conflict. This theory strongly believes that change will only occur if there is conflict. Third. Functional Theory. Social change occurs because of the disharmony between cultural elements. Fourth, Cycle Theory. Social change by itself will occur and cannot be controlled.The method used in this research is descriptive. In the process, the data is collected and compiled. After the data is collected and arranged in such a way, the authors analyze it and provide interpretation, with a qualitative approach. So that it is expected to be able to uncover the realities of the Pesantren salaf which are changing in the community.The results of the study stated that the Pesantren salaf can adapt well to social change by bringing up certain identities. This shift in identity needs to be examined and studied through the theory of action put forward by Max Weber. First, zweckrational. This theory is known as rational-purpose. In doing something always with a good and accurate calculation. Second, wertrational or rational-values. The involvement of the subject is directly involved in matters of absolute importance. The four traditionalists. This theory of action rests on established and established customs or traditions. Traditionalist theories respect existing authority.


Author(s):  
Do Lin'

This article examines the basis of legal regulation and Internet censorship in China. The genesis, development and relevant regulatory basis of legal regulation of Internet in China is examined. The author comes to the conclusion that on the one hand, Internet in China is subject to tight control due to the rapid development of technologies of observation and increase of police access to user data. Currently, China is one of the leaders in engineering and export of automated instruments for monitoring social networks. The citizens face restrictions based on the control of login accounts that give access to the Internet; blockchain apps and their developers are also subject to control and must provide registration of real names of the users; international corporations, such as Apple, Microsoft, Linkedin, are forced to bend to the demands of Chinese authorities and help to determine and punish the users who do not adhere to the censorship requirements in China. On the other hand, Chinese government makes everything possible for the large scale implementation of information technologies into socioeconomic life of the country, namely industrial and commercial sectors. Usage of internet in the sphere of sociopolitical life restricted, since China justifiably sees a threat to political stability and social security of the country.


1969 ◽  
Vol 39 (5) ◽  
pp. 460-470 ◽  
Author(s):  
Hans-Dietrich Weigmann ◽  
Marjie G. Scott ◽  
Ludwig Rebenfeld

A cotton twill fabric was subjected to a durable-press treatment with dihydroxy dimethylol ethylene urea (Permafresh-183) of increasing severity. The mechanical properties of the fabrics and of single fibers withdrawn from the treated fabrics were evaluated and the relationships between fiber and fabric properties were analyzed. Statistically significant correlations between such important fabric properties as abrasion resistance, tear strength, tensile strength, and energy-absorbing capacity, on the one hand, and fiber mechanical properties, on the other, show conclusively that chemical treatments which alter fiber structure and properties are responsible for the modified fabric behavior. At the same time, the importance of fiber geometric arrangements in spun yarn and fabric structures, in terms of fabric properties, are pointed out. Thus, while this work has shown the functional relationships between fiber mechanical properties and fabric characteristics, careful attention must be given to fiber-fiber interactions, particularly in relation to chemical modification treatments.


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