Ibn Al-Baitar: the pioneer of botanist and pharmacist

Ahmad Ibn Al-Baitar was one of the greatest scientists of Muslim Spain and also a well-known botanist and pharmacist of a Middle Ages. By using all the knowledge he learnt from Abu Al-Ábbas, he start collecting plants in and around Andalusia before he left Spain for plants collecting expeditions and travel along the North African coast before he authored his valuable books at Egypt. Ibn Al-Baitar’s major contribution, Kitab Al-Jame’, described about the basic medicines and nutrients derived from plants, animals, and minerals which hold a high status among botanist up to 18th century. He did not write something without first having observation and he had full confidence in inferences and deductions. Besides that, Ibn Al-Baitar was the first who specifies the timing of medicines, which one to be taken during the night and which were to be taken during the day

A compact CPW-Fed curved meander line monopole antenna (MLMA) for GSM application

Monopole antenna is widely used in many communication systems especially in broadcasting where omnidirectional pattern allow the 360-degree coverage. However, at low frequency the conventional design may require miniaturization to fit in versatile spaces. Thus, this paper discusses a low cost, compact CPW-fed curved meander line monopole antenna (MLMA) designed to operate at 0.9 GHz GSM band. The overall dimension is 25mm x 80mm. The antenna is well matched at required GSM band with the bandwidth from 0.88 GHz to 0.93 GHz. Comparison between the conventional MLMA and curved (MLMA) is made in term of return loss and gain. It was found that the curved MLMA has a better gain compared to the conventional MLMA which is 1.472 dB

A Compact CPW-Fed Curved Meander Line Monopole Antenna (MLMA) for GSM Application

Monopole antenna is widely used in many communication systems especially in broadcasting where omnidirectional pattern allow the 360-degree coverage. However, at low frequency the conventional design may require miniaturization to fit in versatile spaces. Thus, this paper discusses a low cost, compact CPW-fed curved meander line monopole antenna (MLMA) designed to operate at 0.9 GHz GSM band. The overall dimension is 25mm x 80mm. The antenna is well matched at required GSM band with the bandwidth from 0.88 GHz to 0.93 GHz. Comparison between the conventional MLMA and curved (MLMA) is made in term of return loss and gain. It was found that the curved MLMA has a better gain compared to the conventional MLMA which is 1.472 dB