📘 قراءة كتاب Metals and the Skin_ Topical Effects and Systemic Absorption أونلاين
Biology is a natural science that is concerned with the study of life, its various forms and its function, how these organisms interact with each other and with the surrounding environment. The word biology in Greek is made up of two words: bio (βίος) meaning life. And loggia (-λογία) means science or study. Biology: the similarity of vegetation and animal cover on the edges of the African and American states, and the existence of the same fossil.
Branches of biology
Biology is an ancient science thousands of years old and modern biology began in the nineteenth century. This science has multiple branches. Among them are:
Cytology or cell science
Ecology or environmental science
نبذه عن الكتاب:
The interactions of metals and metal-based compounds with the human organism
are complex and often detrimental. Protecting the public from such toxic effects
is a principal objective of various regulatory agencies throughout the world. Risk
assessment forms an important part of this exercise and requires, above all, reliable methods by which to determine exposure; that is, how much of a particular
chemical enters the body and at what rate?
Dermal exposure—the absorption of chemicals across the skin—represents
a route of entry that is ubiquitous and currently well-recognized for its significance. The ‘‘rules’’ that govern the percutaneous penetration of organic compounds (such as drugs, pesticides, and cosmetics) are becoming clear. Knowledge
of the nature of the skin’s barrier function, coupled with the development of
useful ‘‘structure-permeation’’ relationships, has led to considerable advancement in the area of dermal risk assessment following exposure to such compounds
Who is the founder of biology?
The importance of biology
Areas of work in the field of biology
Theories of biology
Research on biology for the first grade of secondary school
سنة النشر : 1999م / 1420هـ .
حجم الكتاب عند التحميل : 1.87 .
نوع الكتاب : pdf.
اذا اعجبك الكتاب فضلاً اضغط على أعجبني و يمكنك تحميله من هنا:
شكراً لمساهمتكم معنا في الإرتقاء بمستوى المكتبة ، يمكنكم االتبليغ عن اخطاء او سوء اختيار للكتب وتصنيفها ومحتواها ، أو كتاب يُمنع نشره ، او محمي بحقوق طبع ونشر ، فضلاً قم بالتبليغ عن الكتاب المُخالف: