Adaptation of light-harvesting systems of Arthrospira platensis to light conditions, probed by time-resolved fluorescence spectroscopy

investigation of effective parameters on the rigidity of light composite diaphragms (psscb) by fem

در این رساله با معرفی سقف های psscb متشکل از ترکیب ورق های فولادی ذوزنقه ای و تخته های سیمانی الیافی به عنوان سقف های پیش ساخته (سازگار با سیستم سازه ای قاب های فولادی سبک) به بررسی پارامترهای موثر بر صلبیت سقف، پرداخته می شود. در تحقیق حاضر ابتدا به مدل سازی دو نمونه سقف آزمایش شده، به روش اجزاء محدود با استفاده از نرم افزار تحلیلی abaqus ver 6.10 پرداخته شده است. نمونه های ساخته شده تحت اعما...

Femtosecond spectroscopy of photosynthetic light-harvesting systems.

Observing the elementary steps of light-harvesting in real time is now possible using femtosecond spectroscopy. This, combined with new structural data, has allowed a fairly complete description of light-harvesting in purple bacteria and substantial insights into higher plant antenna systems.

Influence of ammonium chloride feeding time and light intensity on the cultivation of Spirulina (Arthrospira) platensis.

This study dealt with the influence of both the feeding time and light intensity on the fed-batch culture of the cyanobacterium Spirulina (Arthrospira) platensis using ammonium chloride as a nitrogen source. For this purpose, a 2(2) plus star central composite experimental design combined with response surface methodology was employed, and the maximum cell concentration (X(m)), the cell product...

The Light-Harvesting Complexes of Photosystem I in Chlamydomonas reinhardtii: a time-resolved fluorescence study

Photosystems (PS) I and II form the center of the photosynthetic process since they harvest sunlight and use its energy to drive charge separation. The light harvesting capacities of both photosystems are assured by two types of antenna: the core and the peripheral antennae. The peripheral antenna is composed of Light-Harvesting complexes (LHC) that differ between organisms. In the green alga C...

Time-resolved fluorescence spectroscopy