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Full-Text Articles in Social and Behavioral Sciences
Classification Of Phytoplankton Species In Different Habitats From The Coastal Parts Of The Sea Region North Of Lattakia, Nadim Mahmoud, Sawsan Musa
Classification Of Phytoplankton Species In Different Habitats From The Coastal Parts Of The Sea Region North Of Lattakia, Nadim Mahmoud, Sawsan Musa
Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات
Water samples were collected monthly during 1999, from four sites, of different habitats. The study revealed the existence of a total of 120 phytoplankton species, composed of 76 Bacillarophyte, 37 Dinoflagellate, 3 Cyanophyte and 4 Chliorophyte species. Moreover, the study also revealed considerable physio - chemical variations in their water, as well as considerable variations in chlorophyll a. The physio - chemical variations of water, in the four stations most likely is responsible for the variations of the phytoplanktonic species found in them and their population densities.
Thermodynamic Potassium In Iraqi Soils, Ahmed Al-Zubaidi, Shatha Al-Rubaie
Thermodynamic Potassium In Iraqi Soils, Ahmed Al-Zubaidi, Shatha Al-Rubaie
Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات
In order to characterize the status and behavior of potassium in Iraqi soils thermodynamically, twenty eight surface soil samples were collected from different locations to represent the most dominant soil groups in Itrg (put thin names) Chemical, physical and mineralogical characteristics were determined. The potassium forms of soluble, exchangeable, non - exchangeable, mineral and elemental were determined. Thermodynamic parameters related to potassium such as ionic strength, activity coefficient of potassium, activity ratio (K+: Ca2 + + Mg2 +) and the free energy of replacement (DF) of K+: Ca2 + mg2+ were …
Isolation Of Proteins That Have The Ability To Inhibit Potato Y Virus (Pvy) Replication From Datura Plants - Jimson Weed Datura Strmonium, Raqeeb Al-Ani, Osama Al-Issawi, Shaalan Al-Mashaikhi
Isolation Of Proteins That Have The Ability To Inhibit Potato Y Virus (Pvy) Replication From Datura Plants - Jimson Weed Datura Strmonium, Raqeeb Al-Ani, Osama Al-Issawi, Shaalan Al-Mashaikhi
Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات
Two protein portions from Datura inhibiting the multiplication of PVY “were obtained by filtration through sephadex G - 100. The first was maintained its activity at 60 с for 10 min; whereas the other lost its activity at this temp. The SDS- polyacrylamide gel electrophoresis of the heat resistant one revealed the presence of 8 polypeptides with molecular weights; 12000 , 13000 , 22000 , 25000 , 29000 , 40000 and two other of smaller molecular weights . No serological reaction was ovserced between these proteins and the antiserum of PVA, PVS, PVM, PVX and PVY. No precipitate was observed …