نتایج جستجو برای: incubation experiment

تعداد نتایج: 497217  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

Journal: :international journal of environmental research 0
a. de santiago-martín departamento de edafología, facultad de farmacia, universidad complutense de madrid, plaza ramón y cajal s/n, 28040 madrid, spain i. valverde-asenjo departamento de edafología, facultad de farmacia, universidad complutense de madrid, plaza ramón y cajal s/n, 28040 madrid, spain j.r. quintana departamento de edafología, facultad de farmacia, universidad complutense de madrid, plaza ramón y cajal s/n, 28040 madrid, spain c. gonzález-huecas departamento de edafología, facultad de farmacia, universidad complutense de madrid, plaza ramón y cajal s/n, 28040 madrid, spain a.l. lafuente departamento de edafología, facultad de farmacia, universidad complutense de madrid, plaza ramón y cajal s/n, 28040 madrid, spain

the potential risk of metal accumulation in periurban agricultural areas is a matter for concern.the climate characteristics and carbonate content of calcareous agricultural mediterranean soils typical inthese areas favour metal accumulation at the surface level; however there is also a risk of potential metalmobility. our study focuses on the soil properties affecting metal mobility in these s...

Journal: :international journal of environmental research 2013
a. de santiago-martín i. valverde-asenjo j.r. quintana c. gonzález-huecas a.l. lafuente

the potential risk of metal accumulation in periurban agricultural areas is a matter for concern.the climate characteristics and carbonate content of calcareous agricultural mediterranean soils typical inthese areas favour metal accumulation at the surface level; however there is also a risk of potential metalmobility. our study focuses on the soil properties affecting metal mobility in these s...

Journal: :international journal of environmental research 2015
a. de santiago-martín j.r. quintana i. valverde-asenjo a.l. lafuente c. gonzález-huecas

the role played by soil constituents in governing temporal trends of metal mobility in calcareousmediterranean soils deserves special attention due to the particular soil and climate characteristics. reactionsoccurring during the aging modify the metal mobility over time, and the rate of metal application and type ofsoil can be decisive in the outcome of aging reactions in soils. the aim of the...

Journal: :Journal of Visualized Experiments 2022

The study of warming impact on soils requires a realistic and accurate representation temperature. In laboratory incubation studies, widely adopted method has been to render constant temperatures in multiple chambers, via comparisons soil responses between low- high-temperature derive the changes. However, this commonly used failed imitate both magnitude amplitude actual as observed field condi...

2002
Simon Ford David Probert D. Probert

Established firms accumulate a significant body of knowledge, expertise and capabilities that are often secondary to their central revenue generating activities. How do they leverage this expertise in non-core technology into future value creation opportunities? In this paper we examine an attempt by the telecommunications firm BT to create value from the accumulated knowledge within its labora...

Journal: :Poultry science 2009
I A M Reijrink R Meijerhof B Kemp E A M Graat H van den Brand

Egg storage longer than 7 d is associated with a delay in hatch time and a decline in hatchability and chick quality. Prestorage incubation is suggested as a method to reduce the negative effects of prolonged storage times by altering the developmental stage of the embryo, but earlier research has shown that prestorage incubation can both be detrimental and beneficial for hatchability. The reas...

Journal: :مدیریت خاک و تولید پایدار 0
احمد گلچین دانشگاه زنجان فاطمه رخش دانشگاه زنجان بهنام سالوند دانشگاه زنجان امین وطنی دانشگاه زنجان

to determine the effects of vinasse on physicochemical properties of a calcareous and an acidic soil experiment was factorial and had a complete randomized design and three replications. factorial combinations of five vinasse levels (0, 5, 10, 20 and 40 t/ha) and three exposure times (10, 20 and 30 days) were considered as the treatments of this experiment. the result of experiment showed that ...

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