scholarly journals Increasing the frost resistance of ‘Golden Delicious’, ‘Gala’ and ‘Šampion’ apple cultivars

2016 ◽  
Vol 28 (2) ◽  
pp. 125-135 ◽  
Author(s):  
Grzegorz P. Łysiak ◽  
Robert Kurlus ◽  
Anna Michalska
Keyword(s):  
Low Temperatures ◽  
Frost Resistance ◽  
Foliar Application ◽  
Frost Damage ◽  
Positive Influence ◽  
Field Application ◽  
Positive Effects ◽  
Golden Delicious ◽  
Apple Cultivars ◽  
Positive Effect

Abstract The aim of this research was the evaluation of whether the application of 5-ALA, which has potential as a plant growth stimulating agent with indirect anti-stress activity, can limit the damage caused by low temperatures in winter. The research was conducted on frost-sensitive apple cultivars for three years in an orchard and in a laboratory. During the vegetative seasons of each year, the trees of three apple cultivars (‘Golden Delicious’, ‘Gala’ and ‘Šampion’) were subject to 5-ALA foliar application. Three times during each winter following the field application, apple shoots were taken to the laboratory and frozen at −20°C, −25°C and −30°C. After incubation, the damage to the sensitive parts of the shoots was evaluated. The application had a positive effect on the frost resistance of all cultivars, most often at the end of dormancy, which is especially noteworthy because frost damage occurs most frequently during this period. Positive effects of the application were found in most of the experiment combinations of cultivar, year, freezing date and shoot part. Additionally, the positive influence of 5-ALA application on frost resistance was found to increase with each year of the research.

Phase Transformations in Cement Matrix at Low Temperatures

2020 ◽  
Vol 992 ◽  
pp. 86-91
Author(s):  
Ekaterina Potapova ◽  
I. Korchunov ◽  
S. Perepelitsyna
Keyword(s):  
Phase Composition ◽  
Phase Transformations ◽  
Low Temperatures ◽  
Frost Resistance ◽  
Cement Matrix ◽  
Polymer Additives ◽  
Composition And Structure ◽  
Average Size ◽  
Positive Effect ◽  
Helium Pycnometry

The paper presents the results of the phase composition and structure of cement, hardened under alternating freezing/thawing. The fluctuation in the density of the cement through the number of freezing/thawing cycles was determined by the method of helium pycnometry. It is shown that the average size of micropores changes in the presence of plasticizing additives. It is determined that the type and size of pores in the cement effect on frost resistance. The positive effect of mineral slag on the frost resistance of the binder is demonstrated. The positive effect of mineral and polymer additives on the frost resistance of the binder has been discovered and presented in this work.

scholarly journals GROWING APPLE (MALUS DOMESTICA) UNDER TROPICAL MOUNTAIN CLIMATE CONDITIONS IN NORTHERN ETHIOPIA

2009 ◽  
Vol 46 (1) ◽  
pp. 53-65 ◽  
Author(s):  
DEREJE ASHEBIR ◽  
TOM DECKERS ◽  
JAN NYSSEN ◽  
WUBETU BIHON ◽  
ALEMTSEHAY TSEGAY ◽  
...  
Keyword(s):  
Management Practices ◽  
Block Design ◽  
Temperate Climate ◽  
Northern Ethiopia ◽  
Dormancy Breaking ◽  
Mountain Area ◽  
Positive Effects ◽  
Tropical Mountain ◽  
Golden Delicious ◽  
Apple Cultivars

SUMMARYLack of effective chilling during the dormant season is one of the major problems when apples are growing under a tropical climate. We evaluated the response of different apple cultivars (Golden Delicious, Gala, Fuji, Granny Smith and Jonagold) grown on M9 rootstock with different dormancy-management practices. The trials were carried out between 2004 and 2006 in a tropical mountain area (Tigray, Ethiopia), where chilling conditions are poor with the aim of improving and synchronizing the bud break and the blossoming period of these apple cultivars. Two-year-old well-feathered trees were planted in two experimental trial sites in a randomized complete block design. Trees were subjected to the following treatments in two sets of experiments: one defoliation per year only; two defoliations per year, one defoliation followed by 1% hydrogen cyanamide (Dormex) treatment; one defoliation followed by 2% Dormex treatment; one defoliation followed by 4% winter oil; one defoliation followed by 0.5% Dormex and 2% winter oil; and a control with no defoliation or dormancy breaking treatments. The results show positive effects of the dormancy breaking agents on the productivity of the trees after defoliation, with comparable results for the effectiveness of both Dormex and winter oil. There were no statistically significant differences between the Dormex doses. The defoliation treatment alone was not sufficient to break dormancy for the cultivars Golden Delicious, Granny Smith or Gala but showed promising results with dormancy breaking on Jonagold. Yields increased as a result of better flowering time synchronization within a tree but even with the dormancy treatments the length of the flowering period was still spread over five weeks, where under a more temperate climate it lasted two to three weeks. The average fruit weight of Jonagold and Granny Smith can be considered as a good fruit quality while the fruit of other diploid cultivars like Golden, Gala and Fuji were rather small, which indicates that fruit thinning by hand will be a necessity for these cultivars. Red colouration of the apples on the cultivars Gala and Jonagold was excellent and meets the standards necessary for commercialization of these fruits. The sugar concentration of the fruits and the fruit firmness at harvest was high. The results of these first trials indicate that it is possible to develop new apple production in the mountain region of Tigray, Ethiopia.

scholarly journals The influence of Person-Job Fit on burnout and work engagement

2012 ◽  
Vol 25 (3) ◽  
pp. 535-556
Author(s):  
Changgoo Heo ◽  
KangHyun Shin
Keyword(s):  
Work Engagement ◽  
Elevated Level ◽  
Job Characteristics ◽  
Positive Influence ◽  
Job Fit ◽  
Moderating Effects ◽  
Positive Effects ◽  
Negative Effect ◽  
Good Relation ◽  
Positive Effect

This study was conducted to identify the effects of P-J Fit on burnout and work engagement in a sample of 382 employees from major company. The present study attempted to find out the influences of LMX to burnout and engagement and verify the moderating effects of LMX on the influences. The results showed that P-J Fit reduced level of burnout and elevated level of work engagement and the influences were statistically significant. It means that positive influence of P-J Fit which verified in many previous researches was also founded in burnout and engagement. Next, we found that these positive effects of P-J Fit were moderated by LMX. In other words, LMX were enhancing the positive effect of P-J Fit to engagement and negative effect to burnout. It implies that people who have good relation to their superiors feel less burnout due to P-J Unfit and feel more engagement due to P-J Fit. So, the relations between people in company are as important as job characteristics for human resource management. Finally, Implications and limitations of this study are discussed.

scholarly journals PENGARUH LINGKUNGAN KERJA, KOMPENSASI FINANSIAL DAN SEMANGAT KERJA TERHADAP KEPUASAN KERJA KARYAWAN PADA PT. USAHA GEDUNG MANDIRI DENPASAR BALI.

2021 ◽  
pp. 83
Author(s):  
Kadek Sara Mandiyasa ◽  
I Putu Mertha Darma Yasa ◽  
Luh Putu Virra Indah Perdanawati
Keyword(s):  
Job Satisfaction ◽  
Work Environment ◽  
Total Sample ◽  
Positive Influence ◽  
Financial Compensation ◽  
Positive Effects ◽  
Positive Effect ◽  
Building Enterprises

This study aims to determine the presence of positive and partial positive effects between the work environment, financial compensation and work morale on job satisfaction at PT. Denpasar Independent Building Enterprises. This research was conducted at PT. Denpasar Independent Building Enterprises. The technique for determining the number of samples in the study used saturated samples with a total sample of 82 employees. The results showed that 1) There was a positive influence simultaneously between the work environment, financial compensation and work morale on job satisfaction at PT. Denpasar Independent Building Enterprises. 2) There is a partially positive effect between work environment on job satisfaction at PT. Denpasar Independent Building Enterprises. 3) There is a partially positive influence between financial compensation and job satisfaction at PT. Denpasar Independent Building Enterprises. 4) There is a partially positive influence between work morale on job satisfaction at PT. Denpasar Independent Building Enterprises.

Analyzing antecedents affecting the organizational performance of start-up businesses

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tahereh Hasani ◽  
Norman O'Reilly
Keyword(s):  
Factor Analysis ◽  
Organizational Performance ◽  
Structural Equation ◽  
Positive Influence ◽  
Customer Relationship ◽  
Primary Data ◽  
Content Type ◽  
Positive Effects ◽  
Start Up ◽  
Positive Effect

Purpose The purpose of this paper is to depict the effects and relative importance of technological, organizational, environmental and managerial factors on the organizational performance of start-up businesses. Design/methodology/approach This research’s primary data was collected from 389 start-up companies in Malaysia. Principle component analysis and the orthogonal model with Varimax rotation method are used to perform exploratory factor analysis test. Structural equation modelling is also used in confirmatory factor analysis to explore the relationships between independent and dependent variables. Findings The findings suggest positive effects of technological and environmental characteristics on the organizational performance of start-up businesses. The managerial characteristics do not have any positive effect on the organizational performance of start-up businesses. The organizational characteristics split into two parts: the availability of internal financial resources, which positively affects the organizational performance of start-up businesses; and the availability of business incubation, which does not have any important effect. Moreover, start-up companies should choose the one with the highest perceived advantage as it would have the most significant positive effect on their organizational performance. In addition, it was detected that venture capitalists’ (VCs) support has the most positive influence on organizational performance and social customer relationship management adoption even more than governmental supports in the context of Malaysia. Originality/value The proposed framework of this research can be used not only as a research tool for examining determinant factors affecting organizational performance of start-up businesses but also by governments, VCs and other investors to detect best-performing start-up businesses.

scholarly journals Effect of hail net on the water potential of an apple orchard

2020 ◽  
pp. 109-113
Author(s):  
Andrea Szabó ◽  
Kinga Kubicza ◽  
János Tamás ◽  
Attila Nagy
Keyword(s):  
Water Potential ◽  
Ecological Factors ◽  
Frost Damage ◽  
Apple Orchard ◽  
Positive Effects ◽  
Hail Net ◽  
Hail Damage ◽  
Plant Water Potential ◽  
Apple Production ◽  
Positive Effect

 Apple production has seen a decline in yields in recent years, primarily due to ecological factors such as drought, water stress, water scarcity, uneven rainfall distribution, frost damage and hail damage. Ecological factors that are harmful to the plant can be eliminated by human intervention, irrigation or the use of hail net. In our study, we investigated the positive effects of hail net on the development of plant water potential as the vegetation progressed, in non-irrigation area with temperature and humidity. Water potential values were determined using a field osmometer. Confirmed the positive effect of the ice protection net in the apple orchard of Early Gold and Golden Reinders. Our results were supported by statistical analyzes our results.

scholarly journals ‘Law Rome’ and ‘Golden Delicious’ Apples Differ in Their Response to Preharvest and Postharvest 1-Methylcyclopropene Treatment Combinations

HortScience ◽  
2009 ◽  
Vol 44 (6) ◽  
pp. 1632-1636 ◽  
Author(s):  
Steven J. McArtney ◽  
John D. Obermiller ◽  
Tom Hoyt ◽  
Michael L. Parker
Keyword(s):  
Apple Fruit ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Ethylene Concentration ◽  
Positive Effects ◽  
Solids Concentration ◽  
Golden Delicious ◽  
Positive Effect ◽  
Soluble Solids Concentration

Experiments were conducted to compare the effects of different preharvest and postharvest 1-methylcyclopropene (1-MCP) treatment combinations on ‘Law Rome’ and ‘Golden Delicious’ apple fruit. Preharvest 1-MCP sprays had minimal effects on maturity as determined by flesh firmness, starch index, internal ethylene concentration, and soluble solids concentration. Fruit internal ethylene concentration and firmness loss after 30- to 40-days storage at 0 °C plus 7 days at 20 °C were reduced by preharvest and postharvest 1-MCP treatments. The positive effects of preharvest 1-MCP on postharvest quality of ‘Law Rome’ declined in fruit that were harvested 3 days or more after spraying, whereas preharvest 1-MCP continued to have a positive effect on postharvest fruit quality of ‘Golden Delicious’ that were harvested up to 9 days after spraying. The loss in postharvest effects of preharvest 1-MCP treatment on ‘Law Rome’ at delayed harvests was reinstated by exposing fruit to gaseous 1-MCP on the day of harvest. These findings suggest that attached apple fruit of some cultivars may be capable of rapidly generating new ethylene receptors.

Impact of Digitalization on Service Work in Knowledge-Intensive Business Services: An Empirical Study in Tax Consultancies

2019 ◽  
Vol 3 (4) ◽  
pp. 209-222
Author(s):  
Philipp K. Görs ◽  
Henning Hummert ◽  
Anne Traum ◽  
Friedemann W. Nerdinger
Keyword(s):  
Work Engagement ◽  
Service Work ◽  
Psychological Consequences ◽  
Business Services ◽  
Knowledge Intensive Business Services ◽  
Positive Effects ◽  
Knowledge Intensive ◽  
The Impact ◽  
Positive Effect ◽  
Special Case

Digitalization is a megatrend, but there is relatively little knowledge about its consequences for service work in general and specifically in knowledge-intensive business services (KIBS). We studied the impact of digitalization on psychological consequences for employees in tax consultancies as a special case of KIBS. We compare two tax consulting jobs with very different job demands, those of tax consultants (TCs) and assistant tax consultants (ATCs). The results show that the extent of digitalization at the workplace level for ATCs correlates significantly positively with their job satisfaction. For TCs, the same variable correlates positively with their work engagement. These positive effects of digitalization are mediated in the case of ATCs by the impact on important job characteristics. In the case of TCs, which already have very good working conditions, the impact is mediated by the positive effect on self-efficacy. Theoretical and practical consequences of these results are discussed.

The Influence of Effectiveness Managerial, Task Commitment and Work Ethic for Employee Performance Regional Water Company (Pdam) Tirta Bhagasasi Bekasi

2018 ◽  
Vol 4 (08) ◽  
Author(s):  
Kusnadi .
Keyword(s):  
Work Ethic ◽  
Employee Performance ◽  
Positive Influence ◽  
Managerial Effectiveness ◽  
Performance Task ◽  
Water Company ◽  
Managerial Task ◽  
Positive Effect ◽  
Regional Water ◽  
Task Commitment

The purpose of this study was to test the effect of managerial effectiveness to employee performance, task commitment to employee performance, work ethic on the performance of employees, managerial effectiveness to task commitment, managerial effectiveness to the work ethic and the work ethic of the commitment of the employee's duties Regional Water Company (PDAM) Tirta Bhagasasi Bekasi. This research was conducted using the method suryey with path analysis in hypothesis testing. In this study, employees were selected as sample there are 96 employees who selected a random sample by strata or stratified random sampling from a total population of 127 respondents. Took this instrument before being used for the data to test the validity and reliability. The results of this study are as follows: There is a direct positive influence on employee performance managerial effectiveness. There is a direct positive influence on employee performance task commitment. There is a direct positive influence on employee performance work ethic. There is a direct positive influence on the effectiveness of managerial task commitment. There is a direct positive effect managerial effectiveness to the work ethic. There is a direct positive effect on the work ethic of commitment to the task.

Features of radiothermoluminescence of polypropylene and ethylene propylenediene elastomer SKEPT-4044 compositions with nanoscale metal-containing fillers

2020 ◽  
pp. 66-73
Author(s):  
A.M. Magerramov ◽  
◽  
N.I. Kurbanova ◽  
M.N. Bayramov ◽  
N.A. Alimirzoyeva ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Molecular Mobility ◽  
Fe3o4 Nanoparticles ◽  
Low Temperatures ◽  
Frost Resistance ◽  
Relaxation Processes ◽  
Ethylene Propylene ◽  
Temperature Range ◽  
Β Relaxation

Using radiothermoluminescence (RTL), the molecular mobility features in the temperature range of 77-300 K were studied for the polypropylene (PP)/ethylene propylene diene elastomer SKEPT-4044 with NiO, Cu2O and Fe3O4 nanoparticles (NPs) based on ABS-acrylonitrile butadiene or SCS-divinyl styrene matrices. It has been shown that the introduction of nanofillers in PP significantly affects the nature and temperature of γ- and β-relaxation processes, while the region of manifestation of the β-process noticeably shifts to the region of low temperatures. Composites with Cu2O NPs have a higher β-transition temperature Tβ than composites with other NPs. It was found that PP/SKEPT-4044 composites with Cu2O NPs with a dispersion of 11-15 nm and acrylonitrile butadiene thermoplastics have optimal frost resistance compared to other compositions.

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