The crystal structure is a member of the hexagonal crystal system and consists of tetrahedrally coordinated Zinc and Sulfur atoms that are stacked in an ABABAB pattern.
The structure is closely related to the structure of lonsdaleite, or hexagonal diamond.
As there all orientations of the crystal, rings of different 2θ values are formed
A single crystal specimen in a Bragg-Brentano diffrac
1. What are anabolic steroids?
(1) Definition and structure of anabolic steroids
Anabolic steroids - or more precisely, anabolic-androgenic steroids are synthetic derivatives of testosterone.
The effects of anabolic-androgenic steroids mimic those of testosterone. Natually synthesized hormones, such as testosterone, are types of lipids. they have a four-ring carbon skeleton and are synthe
The optical microscope, often referred to as the "light microscope", is a type of microscope which uses visible light and a system of lenses to magnify images of small samples. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although there are many complex designs w
1 Introduction
When designing an aircraft, it’s all about finding the optimal proportion of the weight of the vehicle and payload. It needs to be strong and stiff enough to withstand the exceptional circumstances in which it has to operate. Durability is an important factor. Also, if a part fails, it doesn’t necessarily result in failure of the whole aircraft.
The main sections of an aircra
올해 87세로 아시아 최고의 갑부로 알려진 리카싱(李嘉誠)은 재신(財神)’ ‘상신(商神)’ ‘초인(超人) 이라고 불리기도 하며 중국기업인들이 가장 닮고 싶은 모델로 꼽히기도 한다. 그는 또한 세계 최고 화교기업인 ‘허치슨왐포아(Hutchison Whampoa)’의 대주주이며 홍콩주식시장의 1번 주식 청쿵실업의