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متن کامل


اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    52
  • شماره: 

    2
  • صفحات: 

    109-120
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    143
  • دانلود: 

    19
چکیده: 

To investigate the response of corn to combined APPLICATION of chemical fertilizers with rhizobacteria plant growth promoting, an experiment was conducted in 2017 at Research farm of Agricultural AND Natural Resources Campus of Tehran University, Karaj, Iran, in a rANDomized complete block design with four replications. Four nutritional treatments including T1 (Control treatment without applying fertilizer), T2 (Just PGPRs), T3 (Use chemical fertilizers based on soil test) AND T4 (T3 + PGPRs) were considered. According to the results, the highest total dry weight (3.9 kg/m2), crop growth RATE (79.8 g.m-2.day-1), net assimilation RATE (15.3 g.m-2.day-1) AND grain yield (18.2 ton.ha-1) were observed in T4 treatment AND T2 treatment produced the highest  leaf area index (5.3), leaf area duration (205.2) AND specific leaf weight (78.5 g.m-2) . Also, the lowest value of all traits was observed in in T1 (control) treatment. The results showed that the presence of rhizobacteria plant growth promotioninduction in the corn nutrition program increased the growth AND growth indices of the plant. Combined APPLICATION of chemical fertilizers with rhizobacteria plant growth promoting resulted in the highest growth AND final grain yield of corn.

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بازدید 143

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اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    52
  • شماره: 

    2
  • صفحات: 

    133-140
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    114
  • دانلود: 

    15
چکیده: 

The current study aimed to optimize artificial insemination in aged broiler breeder hens in two experiments. In the first experiment, the effect of (two) different diluted semen temperatures (5 AND 25 °C) of Hubbard rooster (40 roosters, 58 weeks of age) on fertility, hatchability AND sperm penetration (SP) RATE in the perivitelline layer of Hubbard hen (180 hens) were investigated. In the second experiment, three (different) sperm concentrations (100 (C100), 200 (C200), AND 400 (C400) million sperm in 0.25 mL per hen) of Hubbard roosters (40 roosters, 62 weeks of age) on fertility, hatchability AND SP RATE of Hubbard broiler breeder hens (270 hens) were explored. In the first experiment, the results showed that the temperature of 5 °C of diluted semen compared to the 25 °C, increased percentage of hatchability of set eggs, hatchability of fertile eggs, AND SP AND decreased early embryonic mortality. The results of the second experiment showed the highest percentage of fertility AND SP RATE were observed at treatment C400. Also, in this experiment that highest percentage of hatchability of set eggs AND hatchability of fertile eggs AND lowest early embryonic mortality were observed at treatment C400. Return on investment (ROI) of the treatments C200 AND C400 was approximately 2.9 AND 1.4, respectively. In overall, the results of this study showed that (in attention to ROI AND hatchability) to optimize artificial insemination of aged broiler breeder hens we can use a sperm concentration of 200 to 400 million in 0.25 mL per hens at 5 °C.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 114

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نویسندگان: 

Ghazanfari Sam | Afarin Farideh

اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    17
  • شماره: 

    45
  • صفحات: 

    72-89
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    141
  • دانلود: 

    21
چکیده: 

In Kant AND the Problem of Metaphysics (KPM), Heidegger shows how the initial image-making power of the imagination is pictorial in the pure image of TIME. He further clarifies the recognized link between the syntheses AND the TIME-visualizing power of images which is pictorial formative power, which can visualize TIME. The three syntheses of imagination are replaced with the modes of existence of Dasein. Three kinds of photographs resemble the images produced when the transcendental imagination functions as Dasein. We can address the ways to visualize TIME by considering Dasein with a photographic preoccupation through 1. A possible look in the form of presentation (a photograph shows an immediate look of a house or person as intuitable this-here); 2. An immediate look of the thing, house, or deceased person, as well as a copy or its reproduction as a death mask; AND, 3. The manner of contemplation of a likeness is an immediate look of a being present in the form of representation.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 141

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    51
  • شماره: 

    4
  • صفحات: 

    431-441
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    147
  • دانلود: 

    24
چکیده: 

Different types of contact, including contact between node pairs, any-contact of nodes, AND contacts of the entire network, are used to characterize social relations in mobile social networks. Different modes of routing, from the point of view of message delivery semantics, encompass unicasting, multicasting, any-casting, AND broadcasting. Studies have shown that using probability distribution functions of contact data, which is mainly assumed to be homogeneous for nodes, improves the performance of these networks. However, there exists an important challenge in studies on distributions. A lot of works apply the distribution of one type of contact to other types. Hence in routing APPLICATIONs, it causes to use of the distribution of one type of contact for any mode of routing. This study provides a complete solution to model each type of homogeneous contact data distribution AND to use them in different modes of routing. We propose a routing algorithm that uses this new model. Results show that our solution improves the average latency of comparing methods Epidemic, TCCB, AND DR about 3.5-TIMEs, 30%, AND 45%, respectively. It achieves a delivery RATE of about 5% AND 6%, AND average latency about 6% AND 8% better than that of DR AND TCCB, respectively.

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بازدید 147

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اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    13
  • شماره: 

    4
  • صفحات: 

    85-102
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    33
  • دانلود: 

    6
چکیده: 

The desert areas of the playas are important due to the diversity of geomorphological lANDforms AND the great potential for geo-tourism development. These areas can be provided using statistical AND quantitative models to determine the areas with a higher geomorphological diversity value to lAND planners for the sustainable development. This research was conducted to evaluate the geomorphodiversity in Mesileh playas in Namak Lake AND Hoz-e- Sultan region. The geomorphological lANDforms in this area were extracted using satellite images AND field studies, Fragstats software AND the eight quantitative indicators of the lANDscape metrics include Patch Richness Density, Relative Patch Richness, Simpsons Evenness Index, Index Shannon Evenness, Shannons Diversity Index, Simpson's Diversity Index, Modified Simpson's Diversity Index, Modified Sahanon Evenness Index were exerted to evaluate the richness of geomorphological units in Masileh playas. The results indicate that the geomorphological units of alluvial fans, salt flats, salt mud flats AND dunes, respectively, have the highest value among the lANDscape metrics. In addition, from the point of view of the lANDscape metrics, the northwest regions of Kashan AND Abuzeydabad have the most incredible variety of geomorphology. This research showed that geomorphological units could be used as a suitable indicator in evaluating the diversity of the lANDscape, especially in flat areas with morphometric AND geological diversity.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 33

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اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    52
  • شماره: 

    2
  • صفحات: 

    123-131
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    147
  • دانلود: 

    13
چکیده: 

Lactation length is different in individual cows, which is generally converted to a 305-day stANDard using curve fitting models for genetic AND management practices. Individual curves do not have a stANDard shape in all cases, AND can deviate from the stANDard pattern according to factors such as individual differences, AND type of fitted models. These non-stANDard curves, called atypical, resulted from incorrect estimated parameters of the curves; which consist of: continuously increasing or decreasing AND reversed stANDards. This study was conducted to investigate the importance of atypical curves in estimation of 305-day milk production, by fitting two nonlinear models? Wood (empirical) AND Pollott (biological), on 7659 AND 6692 test-day milk yield of 977 AND 776 first calving Iranian Simmental AND Jersey cows, during 2007-2020, using R software. Different patterns obtained based on the combination of increasing (b) AND decreasing (c) phase parameters of curves. The number of stANDard curves from the Pollott AND Wood models were 85.5% AND 62.2% for Simmental, AND 83.1% AND 70.6% for Jersey cows, respectively. Only continuously increasing curves were observed in both breeds in Pollott model (14.8% AND 16.9%, Simmental AND Jersey cows, respectively); Whereas in Wood model, all 3 groups of atypical curves were observed, which the reversed stANDard was the most (22.3% AND 16.5%, Simmental AND Jersey cows, respectively). Based on the findings, at the TIME of stANDardizing the production of dairy cows (national evaluations), not only differences between breeds, but also special attention to the production of atypical curves, should be paid (to correct or discard them).

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بازدید 147

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    12
  • شماره: 

    47
  • صفحات: 

    75-93
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    150
  • دانلود: 

    11
چکیده: 

Background: The expansion of the use of audio AND video media technology has faced society with many medical, cultural AND economic challenges. In the meanTIME, excessive use of mobile phones can cause many problems. Objective: The aim of this study was to construct AND validate a questionnaire on physical AND psychological injuries of mobile phones. Method: The method of the present study was descriptive-correlational AND confirmatory factor analysis. The statistical population of the study consisted of all citizens of Khorramabad with a diploma or higher in 1399, which was selected as a statistical sample by available sampling method of 200 people online AND virtual. Results: The results showed that the factorized physical AND psychological harm questionnaire of cell phone with 42 questions AND 10 components (fear of loss, vibration syndrome, duck syndrome, nomophobia, insomnia, hearing problem, eye syndrome, tunnel AND neck syndrome SMS) AND has good reliability, validity AND flexibility in terms of psychometrics. Discussion AND Conclusion: The questionnaire of factor analysis of physical AND psychological injuries of mobile phones can be used to identify AND study the physical AND psychological injuries of mobile phones.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 150

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نویسندگان: 

Tahmasebpour Behnam | Jahanbakhsh Godehkahriz Soodabeh | Tarinejad Alireza | Mohammadi Hamid | Ebadi Ali

اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    52
  • شماره: 

    2
  • صفحات: 

    121-132
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    154
  • دانلود: 

    10
چکیده: 

In order to identify the correlations AND relationships between different traits in the bread wheat, 30 genotypes were investigated as sub-factors under the split plot experiment in the completely rANDomized design in greenhouse AND the rANDomized complete block design in the field with three replications under the normal irrigation AND post-anthesis water stress conditions. The results of the canonical correlation analysis showed that at both normal AND moisture stress levels, there was a significant correlation between the pair of canonical variables obtained from the phenological traits AND the yield components. Under the normal conditions in the greenhouse, to increase the spike density AND length, the number of days to 50% flowering can be considered as a suitable selection criterion. According to the results of canonical correlation analysis, under the stressed conditions in greenhouse, to increase the spike length, the number of days to the heading, maturity AND 50% of flowering were among the important AND effective factors. Under the optimum irrigation conditions in the field, the number of days to maturity was considered as one of the factors influencing the seed weight per spike. The results of canonical correlation analysis under the field stress conditions showed that to increase the 1000-seed weight, the number of days to maturity can be considered an appropriate selection criterion.

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بازدید 154

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اطلاعات دوره: 
  • سال: 

    1403
  • دوره: 

    54
  • شماره: 

    1
  • صفحات: 

    99-110
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    37
  • دانلود: 

    15
چکیده: 

Efficient distribution of service requests between fog AND cloud nodes considering user mobility AND fog nodes’ overload is an important issue of fog computing. This paper proposes a heuristic method for task placement considering the mobility of users, aiming to serve a higher number of requested services AND minimize their response TIME. This method introduces a formula to overload prediction based on the entry-exit ratio of users AND the estimated TIME required to perform current requests that are waiting in the queue of a fog node. Then, it provides a solution to avoid the predicted overloading of fog nodes by sending all delay-tolerant requests in the overloaded fog node’s queue to the cloud to reduce the TIME required for servicing delay-sensitive requests AND to increase their acceptance RATE. In addition, to prevent requests from being rejected when the mobile user leaves the coverage area of the current fog node, the requests in the current fog node’s queue will be transferred to the destination fog node. Simulation results indicate that the proposed method is effective in avoiding the overloading of the fog nodes AND outperforms the existing methods in terms of response TIME AND acceptance RATE.

شاخص‌های تعامل:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

بازدید 37

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نویسندگان: 

Baghbani-Arani Abolfazl | Adavi Zohrab

اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    52
  • شماره: 

    2
  • صفحات: 

    83-95
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    154
  • دانلود: 

    20
چکیده: 

To investigate the effect of vermicompost, N fertilizer AND their integration on growth, biological AND essential yields oil AND its components in two populations (Varamin AND Isfahan), an experiment was conducted in a rANDomized complete block design with three replications in the field of Isfahan Medicinal Plants Research Center in 2016. Fertilizer treatments including 100% urea, vermicompost 33.3 AND urea 66.6%, vermicompost 66.6 AND urea 33.3%, 100% vermicompost AND control treatment (without fertilizer) as the first factor AND Varamin AND Isfahan populations as the second factor were selected. The results showed that the interaction effects of nitrogen fertilizer AND populations on all studied traits were significant. In both populations, nitrogen fertilizer improved height, biological AND essential oil yields, content of essential oil compounds (d-Carvone AND its yield, α-phellANDrene AND linalool; except p-Cymene AND Limonene in Isfahan population). Since in medicinal plants, the quantity (biological yield) AND quality (essential oil AND d-Carvone; the most important ingredient AND the highest amount of essential oil in this experiment), 66.6% vermicompost + 33.3% urea in Varamin population, was the best treatment in the experiment. In addition an in the direction of human health AND sustainable agriculture, it is possible to reduce 33% of chemical fertilizers APPLICATION AND pollution; however, in terms of other essential oil contents (α-phellANDrene, Linalool AND p-Cymene), 100% vermicompost fertilizer treatment was superior in Isfahan population.

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بازدید 154

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