Nanoparticles: synthesis and applications
| Institution | UNIVERSITY |
| Course | BACHELOR OF SCIENCE... |
| Year | 4th Year |
| Semester | Unknown |
| Posted By | stephen oyake rabilo |
| File Type | |
| Pages | 30 Pages |
| File Size | 1.73 MB |
| Views | 1872 |
| Downloads | 0 |
| Price: |
Buy Now
|
Description
Nanoparticles are defined by the worldwide federation of national standards bodies, the International Organization for Standardization (ISO), as nanoobjects with
all external dimensions in the nanoscale, where the lengths of the longest andshortest axes of nanoobjects do not differ significantly . Though nanoscale is basically ranged from 1 to 100 nm, nanoparticles can be categorized by three size ranges: larger than 500 nm, between 100 and 500 nm, and
between 1 and 100 nm (European Commission, 2010). With respect to the size and the size distribution, nanoparticles may exhibit size-related intensive properties. If they are small enough to confine their electrons, they produce quantum effects and exhibit unexpected properties, for example, gold nanoparticles appear red in solution (see, for instance, Eustis and El-Sayed, 2006), and melt at much lower temperatures than that in slab form (Buffat and Borel, 1976). The high surface-area-to-volume ratio of nanoparticles provides the significant changes in properties related to contact/surface area, such as catalytic (Astruc, 2008),surface-enhanced plasmon resonance (Melaine et al., 2015), etc.
Below is the document preview.
KCSE 2024 ENGLISH REVISION BOOKLET ANSWERS AND QUESTIONS
Trending!
Get a copy of the KCSE 2024 ENGLISH REVISION BOOKLET ANSWERS AND QUESTIONS. This booklet consist of up to 20 consolidated English 2024 Mock papers from Top National Schools and Joint Exams. They come with a comprehensive and well coordinated Marking scheme making it a great and valuable resource for your revision!
815 Pages
5424 Views
1 Downloads
9.99 MB
KCSE 2024 CHEMISTRY REVISION BOOKLET ANSWERS AND QUESTIONS
Trending!
Get a copy of the KCSE 2024 CHEMISTRY REVISION BOOKLET ANSWERS AND QUESTIONS. This booklet consist of up to 20 consolidated Chemistry 2024 Mock papers from Top National Schools and Joint Exams. They come with a comprehensive and well coordinated Marking scheme making it a great and valuable resource for your revision!
1097 Pages
5350 Views
3 Downloads
42.72 MB
KCSE 2024 MATHEMATICS REVISION BOOKLET ANSWERS AND QUESTIONS
Trending!
Get a copy of the KCSE 2024 MATHEMATICS REVISION BOOKLET ANSWERS AND QUESTIONS. This booklet consist of up to 20 consolidated Mathematics 2024 Mock papers from Top National Schools and Joint Exams. They come with a comprehensive and well coordinated Marking scheme making it a great and valuable resource for your revision!
1030 Pages
4875 Views
0 Downloads
49.69 MB
KCSE 2024 PHYSICS REVISION BOOKLET ANSWERS AND QUESTIONS
Trending!
Get a copy of the KCSE 2024 PHYSICS REVISION BOOKLET ANSWERS AND QUESTIONS. This booklet consist of up to 20 consolidated Physics 2024 Mock papers from Top National Schools and Joint Exams. They come with a comprehensive and well coordinated Marking scheme making it a great and valuable resource for your revision!
1055 Pages
6099 Views
5 Downloads
51.06 MB
THE ACARI (ticks & mites)
One of the largest, highly diverse and
widely distributed groups in the animal
kingdom
• Very abundant - numbers extremely high
(more than 60,000 described species
(with an estimated 500,000 more still
undescribed)
• Habitat - both aquatic and terrestrial
(many free-living & parasitic
82 Pages
284 Views
0 Downloads
4.2 MB
THE CRUSTACEANS
Trending!
Includes crabs, lobsters, prawns,
barnacles, pill bugs, copepods,
crayfishes, water fleas, shrimps, etc
39 Pages
3218 Views
0 Downloads
2.92 MB
EXCHANGE OF RESPIRATORY GASES
Trending!
Active body cells require lots of oxygen for energy production in aerobic respiration as we learnt in Lecture IV. A major by product of aerobic respiration is carbon dioxide. Carbon dioxide dissolves in water to form carbonic acid and hence disturbs acid base balance in the body. Accumulation of carbon dioxide is therefore toxic to the cells as it may cause acidosis. Living cells have mechanisms of intake of oxygen and elimination of carbon dioxide. The two gases are known as respiratory gases. In small organisms such as protozoans the body surface provides an adequate surface area for the exchange of respiratory gases by diffusion. In mammals and other higher animals there are specialized systems for exchange of respiratory gases.
16 Pages
2084 Views
1 Downloads
1012.45 KB
EMBRYONIC GROWTH AND METAMORPHOSES IN INSECTS
Trending!
Once an insect hatches from the egg it is usually
able to survive on its own, but it is small, wingless,
and sexually immature. Its primary role in life is to
eat and grow. If it survives, it will periodically
outgrow and replace its exoskeleton (a process known as moulting).
• In many species, there are other physical changes that also occur as the insect gets older (e.g., growth of wings and development of external genitalia)
60 Pages
2969 Views
0 Downloads
2.69 MB
Subphylum Uniramia
Trending!
Five classes of Uniramia are recognized:
1. Class Diplopoda (millipedes)
2. Class Chilopoda (centipedes)
3. Class Symphyla (sympylids)
4. Class Pauropoda (pauropods)
5. Class Insecta (insects)
Centipedes, millipedes, symphylids and pauropods are collectively called myriapodous arthropods (Myriapods). All have long trunks with many segments and appendages, most of which are walking legs.
102 Pages
3791 Views
0 Downloads
6.16 MB
Insect Hormones
Trending!
Insect Hormones
• A hormone is a chemical signal sent from cells in one
part of an organism to cells in another part (or parts) of
the same individual. They are often regarded as chemical messengers.
• Typically produced in very small quantities, but cause profound changes in their target cells
• Their effect may be stimulatory or inhibitory
• In some cases, a single hormone may have multiple targets and cause different effects in each target
• Examples of processes controlled by hormones include moulting, metamorphosis, oocyte development (vitellogenesis), colour change and diurnal rhythms of activity
15 Pages
2531 Views
0 Downloads
1.21 MB