Some Morphological Observations of Charophytes (Characeae) from Bangladesh
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چکیده
منابع مشابه
Charophytes (Characeae, Charophyta) in the Czech Republic: taxonomy, autecology and distribution
The Charales (stoneworts) are an ancient monophyletic group with conserved features same in ancesters as well as in present representatives. They are considered to be closely related to the ancestors of land plants. The taxonomy of Charales was delimitated on the basis of morphology and later by fossil characters as well. Nowadays, the higher taxa are relatively well defined and their delimitat...
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Biostratigraphy and paleoecology of the famous dinosaur beds of Tendaguru Formation, Tanzania, East Africa are still under discussion. Calcareous microfossils have not yet contributed to this question . Four samples from the Middle Dinosaur Member have now yielded charophyte gyrogonites of the species Aclistochara c£ bransonii, Aclistochara cf. minor, Mesochara canellata, and Mesochara harrisi....
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آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...
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The plant action potential (AP) has been studied for more than half a century. The experimental system was provided mainly by the large charophyte cells, which allowed insertion of early large electrodes, manipulation of cell compartments, and inside and outside media. These early experiments were inspired by the Hodgkin and Huxley (HH) work on the squid axon and its voltage clamp techniques. L...
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ژورنال
عنوان ژورنال: Journal of Life and Earth Science
سال: 2014
ISSN: 2408-8641,1990-4827
DOI: 10.3329/jles.v7i0.20124