Can someone enlighten me on the recruitment process of the aforementioned company.

What is your take on this

"Three guests check into a hotel room. The front desk officer says the bill is N30,000, so each guest pays N10,000. Later the front desk officer realizes the bill should only be N25,000.
To fix this, he gives the attendant N5,000 to return to the guests. On the way to the room, the attendant realizes that he cannot divide the money equally. Since the guests didn't know the total of the revised bill, the bellhop decides to just give each guest N1,000 and keep N2,000 as a tip for himself.
Each guest got N1,000 back: so now each guest only paid N9,000; bringing the total paid to N27,000. The attendant has N2,000. And N27,000 + N2,000 = N29,000 so, if the guests originally handed over N30,000, what happened to the remaining N1,000?"

Thank you very much. when are we expecting the 2019/2020 form?

Why study chemistry?
Chemistry is the study of the composition, structure, properties and interactions of matter. Chemistry arose from attempts by people to transform metals into gold, first by the Egyptians who wanted it for monetary purposes and secondly by the Chinese who believed gold is a medicine that could confer long life; an effort that became known as Alchemy. Modern chemistry was established as scientists began identifying and verifying through scientific experimentation the elemental processes and interactions that create gases, liquids and solids that compose our physical world.
As the field of chemistry advances, chemists learned how to create new substances that have many applications to human lives. They became more interested in the materials of which an object is made of (contents/active ingredients) than the quantity, size, shape or motion. Chemists began to ask questions like why a solution of salt conduct electricity but solution of sugar does not, what happened when food is said to be digested, what actually transpires during the process photosynthesis, why iron rusts, why iron rusts but tin does not, why some chemical changes proceeds rapidly while others are slow and so on. Chemists, while trying to provide answers to most of these questions arising from natural phenomena have learnt to duplicate and produce large quantities of many useful substances whose properties are quite unique.
The study of chemistry have been able to transform resources such as coal, petroleum, ores, plants, fossils and air into useful materials such as plastics and polymers, medicines and artificial implants, perfumes and flavors, metal alloys, fertilizers and insecticides etc. presently, cotton and wool have been replaced from its numerous uses by synthetic fibres and wool, the same applies to metal and glass whose alternative now is plastic. Often times, chemistry is being regarded as a mother and centre of all other sciences because of its wider applications. Chemistry in fact comes next to God almighty in providing solutions to humanity. If you have ever wondered critically on the applications of chemistry to human existence then you will definitely arrive at the same conclusion with other scientists that nothing, absolutely nothing existed without chemical reaction. Think of it, is it food, paper, textile, leather, ceramics, dyes, paint, gasoline, petroleum, ink, shoes, rubber, goggles, boots, agriculture, jewelries,magnet, adhesives, plastics, printing, detergent and soap, vitamins, cars, motorcycles, electronics, phones, medicines, management and maintenance of both clinical and quality control laboratories, even man himself and other living things are complex chemical factories in which precise and regulated chemical reactions occur. This is also in line with some processes that occur in our everyday life such as: photosynthesis, combustion, digestion, cooking, clothing, dyeing, washing and so on. Although, it is a well established fact that life itself cannot be worth living withoutchemistry.
Being a chemist means taking a certain view of the world, swimming in the aqua of molecules and their behaviours. More specifically, knowing the details of chemistry in day to day life can be simultaneously useful and annoying, since one can’t help seeing things in terms of molecules and their properties. At home for instance, it helps in working out what might be used to improve the scent of your perfume and makes it last longer, also what might be used to clean a stubborn stain. Sometimes when you hear people claiming they have magical mixture for stain removal then you begin to wonder if actually this mixture is outside the chemical reagents employed in chemistry laboratory. Seeing chemistry being abused by some novice who knew nothing about chemicals is quite worrisome. Secondly, a glance at advertisements for expensive bottled waters with their claims about pH, oxygen level and purity does not in any way sound strange to a chemist who can even stand to disproof all their claims.
However, whenever you see yourself as a chemist just like myself, be proud, beat your chest and say chemistry rules the world so as a chemist I rule the world; every other profession comes after me because I provide every material and equipment they need to function. Finally, I would like to conclude by borrowing from the words of a renowned chemistry scholar Babatunde Okesola who said ”Chemistry is all around us and the better we know chemistry, the better we know our world. The chemistry axiom – ‘what on earth is not chemistry?’ is a profound truth that triggered my unquenchable passion for chemistry”.
By
Comr. Nwaiwu Kingsley C.

Open letter to UN

Dear United Nations,
I was told by my teacher many years ago that U.N is an organization or community of different countries tasked to maintain international peace and security, promote Human Rights and proffer solutions to natural disasters and other displeasing conditions through her humanitarian services.
I will start by asking this question, Is Nigeria actually a member state of the UN? If yes, then why the silentness? Why has U.N chosen to be silent on matters concerning Nigeria's peace, security and human right violations.
It is appalling that a country with such a great affluence like Nigeria has been ignored and neglected by the United Nations. Countless times Nigeria has been struck with security challenges ranging from book haram, religious crisis and the most recent attack by Fulani herdsmen which has displaced reasonable number of Nigerians from their respective abodes. Moreover, It is crystal clear that the Nigerian president and commander in chief of the armed forces has been insensitive about these ugly situations as he only resort to unnecessary critics and frivolous excuses. Oftentimes the fundamental Human Rights of innocent Nigerians are being violated without due response from the appropriate authorities. In the light of all these, I remain baffled that United Nations have been silent and pretend not be aware of our plight. The U.N has neglected her onus as an organization. Ofcourse this is quite unlike U.N when it comes to matters concerning any country in Europe or America.
With bitter heart, I ask again, is it that the number of lives being lost in Nigeria on daily basis is very minute therefore U.N should sit and target a certain number or the killing should continue until the whole country especially the Chrisians are wiped out before U.N can intervene with her humanitarian services.
Not quite long, some group of people because of the oppression, maim, humiliation and injustice protested peacefully for referendum to grant them independent for their safety. Surprisingly, the Nigerian government was very proactive enough to proscribe and label them terrorists whereas the so-called herdsmen that have unlawfully murdered and displaced hundreds of Nigerians amid destruction of houses with no remorse are being granted interview to give reasons and defend their malodorous act instead of arresting and prosecuting them.
Sequel to all these, one would expect a diplomatic response and effective peacekeeping effort from UN in order to curtail the blood shed, foster peace and unity and restore our democratic legitimacy but up to this very moment we have neither heard nor noticed a genuine move by the United Nations.
Finally, on behalf of common Nigerians, I urge UN to remember the crisis in Nigeria, hear our cry and intervene timely before its too late. We cannot continue this way else one faithful day Nigeria will turn to a mere refugee camp.
Thanks for your kind consideration.

Sincerely
Nwaiwu Kingsley

This man keep on Washing his dirty linens in the public. (exposing his ignorance)

The problem of Arsene wenger is old age. His mentality is depreciating

Have any person completed the Airforce Dssc online application? I need to confirm it's not scam please

A very big challenge for africa especially Nigeria.It's high time our health experts wake up and take the bull by the horn. we have to prove to the world that our medical students are fit

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INTRODUCTION
Nano’ denotes nanometer (nm109). The concept of nanotechnology was introduced by Richard Feynman in 1989 at a meeting of the American physical society. (Khademhossei and Langer, 2006). Since then nanotechnology has developed into a multidisciplinary field of applied science and technology. Nanotechnology is the ability to work on a scale of about 1-100nm in order to understand, create, characterize and use materials, structures, devices and systems with new properties derived from their nanostructures. Because of their size, nanoparticles have proportionally larger surface area and consequently more surface atoms than their microscale counterparts. By using Nanotechnology techniques, it is possible to assemble molecules into objects, along several length scales, and to disassemble object into molecules, as nature already dose.
Nowadays, most materials used for food packaging are practically undegradable, representing a serious global environmental problem New bio-based materials have been exploited to develop edible and biodegradable film as a big effort to extend shelf-life and improve quality of food while reducing packaging waste.
However, the use of edible and biodegradable polymers has been limited because of problem related to performance (such as brittleness, poor gas and moisture barrier), processing (such as low heat distortion temperature) and cost.
Starch, as an example, has received considerable attention as a biodegradable thermoplastic polymer. However, it has a poor performance by itself because of its water and limited mechanical properties with high brittleness, which is related to the anarchical growth of amylose crystals.
The application of nanotechnology to these polymers may open new possibilities for improving not only the properties but also cost-price efficiency.
Several composites have be developed by adding reinforcing compounds to polymers to enhance their thermal, mechanical and barrier properties. Most of these reinforced materials present poor interactions at the interface of both components.
Polymer composites are mixtures of polymers with inorganic or organic fillers with certain geometries such as fibers, flakes, spheres, particulates.
The use of filler which have at least dimension in nanoparticles produces polymer nanocomposites. Three types of filler can be distinguished, depending on how many dimensions are in the nanoparticle (nanometric range). When only one dimension is in the nanometer range, the composites are known as Polymer-layered Crystal Nanocomposites, almost exclusively obtained by the addition of polymers inside galleries of layered host crystals.
A uniform dispersion of nanoparticles leads to a very large filler interfacial area, which changes the molecular mobility, the relaxation behaviour and the consequent thermal and mechanical properties of the material.
In addition the nanoreinforcement themselves, an interphase region of altered mobility surrounding each nanoparticles is induced by well dispersed nanoparticles, resulting in a percolating interphase network in the composite and playing an important role in improving the nanocomposite properties.
Besides reinforcing nanoparticles, whose main role is to improve mechanical and barrier properties of the packaging materials, there are several types of nanostructure responsible for other functions, packaging system such as antimicrobial act ivity enzyme immobilization, biosensing etc.
The most studied nanoparticles will be presented based on its primary function and application in food packaging and global effect of its composites
NANOREINFORCEMENT
The use of Reinforced plastic composites has increased over the last two decades and this dramatic growth is showing every sign of continuing in the future.
Inorganic fibres and particulates fillers are generally used as reinforcements because of their inherent high rigidity and thermal stability Nanoreinforced nanocomposites offer a great potential for novel properties since the distinct inorganic-organic components are combined in a single material with a uniformity of dispersion in the nanolevel.
An effect exploitation of nanoreinforcemers requires and understanding of nanoscale, structure, property, processing relationship of the nanocomposites, to select the right nanocomponent and to process them properly for target properties.
PROPERTIES, CLASSIFICATION AND TYPES OF NANOCOMPOSITES
The properties of nanocomposites materials depend not only on the properties of their individual parents but also on their morphology and interfacial characteristic.
This rapidly expanding fields is generating new materials with new properties. These properties can be derived by combining properties from the parent constituents into a single material.
The inorganic components can be three dimensional frame work systems such as zeolites, two dimensional layered materials such as clays, metaloxides, metal phosphates, chalcogenides and even one dimensional and zero-dimensional materials such as (mo3 se)n chains and clusters. Experimental work has generally shown that virtually all types and classes of nanocompsite materials lead to new improved properties when compare to their macrocomposite counterparts.
Therefore, nanocomposite provides new application in many fields such as mechanically reinforced light weight components, non-linear optics, battery, cathodes and ionics, nanowires, sensors and other systems.
Organic/Inorganic Nanocomposite and Lamellar nanocomposites
The general class of Organic/inorganic nanocomposites may also be relevance to issues of posits may also be of relevance to issues of bioceramics and biomineralization, in which in – situ growth and polymerization if biopolymer and inorganic matrix is occurring. On the other hand, lamellar nanocomposites represents an extreme case of a composites in which interface interactions between the two phases are maximized.
The later is further divided into two different types of nanocomposites which helps to broaden the general knowledge of this topic. They are sometimes referred as the types of nanocomposites. These include the intercalated Nanocomposites and Exfoliated Nanocomposites.



HEALTH IMPACTS OF NANOTECHNOLOGY
The health impacts of nanotechnology are the possible effects that the use of nanotechnology material and devices will have on human health.
Nanotechnology’s health impact can be split into two aspects: (1) The potential for nanotechnological innovations to have medical application to cure disease, and (2) The potential health hazards posed by exposure to nanomaterials.
Nanotoxicology is the field which studies potential health risks of nanomaterials. The extremely small size of nanomaterial means that they are much more readily taken up by the human body than large sized particles. How these nanoparticles behaves or reacts in the body is one of the significant issues that need to be resolved. The behavior of nanoparticles is a function of their size, shape and surface reactivity with the surrounding tissue. Apart from what happens when non- degradable or slowly degradable nanomaterials or particles accumulate in organs, another concern is their potential interaction with biological processes in the body because of their large surface area, nanoparticles on exposure to tissue and fluids will immediately adsorb onto the surface of the some of the macromolecules they encounter.


ENVIRONMENTAL IMPACT OF NANOTECHNOLOGY
Nanopollution is a common name for all the waste generated by nanodevices or during the nanomaterials manufacturing process. This kind of wastes are always dangerous because of its size. It can float in the air and might easily penetrate animal and plant cells causing unknown effects. Most human-made nanoparticles do not appear in nature, so living organisms may not have appropriate means to deal with nanowaste.
To properly assess the health hazards of engineered nanoparticles the whole life cycle of these particles needs to the evaluated, including their fabrication, storage and distribution, application and potential abuse and disposal environmental assessment is justified as nanoparticles present new environmental impacts.
Beyond the toxicity risk of human health and the environment which are associated with first generation nanomaterials, nanotechnology has broader impacts on societal/social issues which highlights on the effects that the availability of nanotechnological devices will have on politics and human interaction. And speculative issues which is the specific risk associated with the speculative vision of molecular nanotechnology, such as “Grey goo” (a hypothetical substance into which the surface of the earth might be transformed by self-replicating nanobots running amok).
APPLICATIONS OF NANOCOMPOSITES
Due to the novel and improved properties of nanocomposites researchers and companies have found its application in so many fields. The exploration of nanocomposites has lead to confirmation of the following uses below.
1. Producing batteries with greater power output
Researchers have developed a method to make anodes for lithium ion batteries from a composite formed with silicon nanospheres and carbon nanoparticles. The anodes made of the silicon carbon nanocomposites make closer contact with the lithium electrolyte, which allows faster charging or discharging of power.

2. Speeding up the healing process for broken bones. Researchers have shown that growth of replacement bone is speeded up when a nanotube–polymer nanocomposites is placed as a kind of scaffold which guide growth of replacement bone. The researchers are conducting studies/researches to better understand how this nanocompsities increases bone growth.

3. Producing structural components with a high strength- to – weight ratio. For examples and epoxy containing carbon nantubes can be used to produced nanotube-polymer composites windmill blades. This results in a strong but lightweight blade, which makes longer windmill blades practical. This longer balder increases the amount of electricity generated by each windmill.


4. Making light weight sensors with nanocomposites.
A polymer-nanotube composite conducts electricity; how efficient it conducts depends upon the spacing of the nanotubes. This property allows patches of polymer-nanotube nanocomposite to act as stress sensors on windmill blades. When strong wind gusts bend the blades the nanocomposites will also bend. Bending changes the nanocomposites sensor’s electrical conductance, causing an alarm to the sounded. This alarm allow the windmill to be shut–down before excessive damages occurs.

5. Using nanocomposites to make flexible batteries.
A nanocomposite of cellulous material and nanotube could be use to make a conductive paper. When this conductive paper is soaked in an electrolyte, a flexible batter is formed.

6. Making tumors easier to see and remove.
Researchers are attempting to join magnetic nanoparticles and fluorescent nanoparticles in a nanocomposite particle that is both magnetic and florescent. The magnetic ‘property of the nanocomposite particle makes the tumor visible during an MRI procedure done prior to surgery. The fluorescent property of the nanocomposite particle could help the surgeon to better see the tumor while operating.



7. Food packaging
The requirement here is for a non-refrigerated packaging system capable of maintaining food freshness for three years. Nanoclay polymer composites are currently showing considerable promise to this application. From excellent gas barrier properties exhibited by nanocomposites polymer systems, there is a substantial use of nanocomposites as packaging materials and generation of packages with novel properties in future years.

8. Fuel tanks
The ability of nanoclay incorporation to reduce solvent transmission through polymers such as polyamides has been demonstrated. Data provided by De Bievre and Nakamura of UBE industries reveals significant reductions in fuel transmission through polyamide 6/66 polymers by incorporation of a nanoclay filler. As a result, considerable interest is now being shown in these material as both fuel tank and fuel line components for cars.
9. Environmental protection
Water laden atmospheres have long been regarded as one of the most damaging environment which polymeric materials can encounter. Thus an ability to minimize the extent to which water is absorbed can be major advantage. Data provided by Missouri Baptist college indicates the insignificant extent which nanoclay incorporation can reduce the extent of water absorption in a polymer. Specifically, increasing nanoclay aspect ratio on diffusion of water was found to diminish substantially the amount of water absorbed thus indicating the beneficial effects likely from nanoparticle incorporation.

10. Flammability reduction
The ability of nanoclay in corporation to reduce the flammability of polymeric materials was a major theme of the paper presented by Gilman of the National Institute of standards and Technology in the US. In his work, Gilman demonstrated the extent to which flammability behavior could be restricted in polymers such a polypropylene with as little as 2% nanoclay loading. In particular heat release rates, as obtained from colorimetric experiments, were found to diminish substantially by nanoclay incorporation while still maintaining or enhancing other improve properties and characteristics of the polymer unlike when a microparticle filler is used.
Beyond the above applications, nanocomposites have so many other applications which are too numerous to list. Especially in its ability to improve mechanical properties.
By NWAIWU KINGSLEY