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Tuesday, 23 May 2017

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Where to get Information as developers or tech expert - Apress

Complete tools for tech experts - Apress

About Apress

Apress is a Springer nature company.  They publish information needed by developers and IT experts. So if you what to start a career in such feeds you need all the informations you can get your hands on.


What they can do for you

They publish high-quality, practical content helps technology professionals at all levels increase the skills they need to advance in their day-to-day work.

Key topics on their list of over 2,500 titles include big data, databases, open source, web development, Java, Python, Apple & Swift, and of course there is Apress’ well-known line of Microsoft and .NET titles.

Links to get their resources.

Apress IT Ebooks
Become an expert with Apress IT eBooks.

Shop now for the latest development titles on the hottest IT technologies

Shop now for the latest development titles on the hottest IT technologies at


If you are aspiring to be great, you must read and work.

If you have any suggestions on my next post, comment or Send me an email at:
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Monday, 22 May 2017

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Hazards in chemical process industries - Chemical hazard

Chemical hazard

What are hazards?

 Situations that have the potential for causing harm to people, the environment, or property.

 What is Industrial hazard? -

Any condition produced by industries that may case injury or death to personnel or loss of property. Hazards may be dormant, armed or active.


 Prioritization of hazards involves making visible all risks in an operation, the probability of occurrence and the potential damage.

 Then, what is Chemical Hazard: 

     This is a type of occupational hazard caused by exposure to chemicals in the workplace. It is any chemical that can cause illness, injury, or an emergency.

 It can be divided into; Physical and health risk Chemical hazard may be: Toxic, corrosive, irritant, carcinogenic, mutagenic, flammable etc.
Physical and health hazard

Many chemical may cause severe burns, if they come in contact with living tissue. Routes to exposure ingestion inhalation from fumes poisoning explosion

    Duration of Exposure of chemicals

Acute - Short Mins to Hrs
Sub acute - Longer up to 90 days
Chronic - Prolonged /Repeated over days, months & years.
    The effect of the chemicals is independent on duration of exposure, but dependent on concentration and type of chemicals exposed.

Safety measures

1) Wear all required PPEs (professional protective equipment) such as: hand gloves, helmets, eye goggles, safety boots and so on, depending if you will be working with a solid, liquid or gaseous form of hazardous chemicals.

2) Identify the hazardous characteristics of a chemicals using a safety data sheet or a pictogram to know how best to handle them.

 Hazardous-waste management is the collection, treatment, and disposal of waste material that, when improperly handled, can cause substantial harm to human health and safety or to the environment. 

Characteristics of untreated hazardous waste.

  • Reactivity 
  • Radioactivity 
  • Ignitability 
  • Corrosivity 
  • Infectiousness 
  • Toxicity

Watch this self explanatory video

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Saturday, 20 May 2017

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Calendars: The real reason why you need it!

What is a calendar?

    A series, table or chart that shows the days, weeks and months of a particular year. A calendar is so important that we can't go through life without it.

Why is it so important?

1) It helps us keep track of our busy schedules.
2) It indicates seasonal periods, so we can plan for it.
3) It gives us purpose.
4)It helps us to organize our time properly and efficiently.
5) It helps students to keep track of admission, exam, study, mock,quiz and presentation dates.
6) So you can keep track of special days such as birthdays, events, weddings, anniversaries etc.
7) You will be able to write a to-do list used to identify when you’re going to do those things and how much time is needed to complete them.
8) It favours productivity.
9) It identifies the best time to plant or harvest.

Types of calendars

   The most widely used calendar today is the Gregorian calendar which is a complete calendar (i.e. it names each consecutive day)
     Other Types of calendar includes: The arithmetic calendar which is a rule-based calendar and the Astronomy calendar which is an Observation-based calendar, for example: Religious Islamic calendar and old religion Jewish calendar.
     These days you will be able to find different calendars for specific activities.

Where can I get these calendars?

    Most of us are bad at keeping time, so many things you just forget to do because of one reason or the other. It's not enough having a calendar on your phone, you need one that would actually work.

Get from

This the world's biggest retailer of calendars, carrying 8,000+ wall calendars, desk calendars, and engagement calendars as well as over 4,000 games, toys, and puzzles.
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Your calendar is a flexible tool which allows you to work with time, it gives you the medium to postpone or reschedule if there is an unforeseen occurrence.

Quote: "If you fail to plan you plan to fail"

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Wednesday, 17 May 2017

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Cohesive and Adhesive forces: Definition, differences and effects.

Cohesive vs adhesive force

Adhesion and cohesion

Someone emailed me and suggested do a piece on this topic. Well, for easy understanding of the concept of cohesion and adhesion force, i wrote this brief post.

Happy Learning!


  The force of attraction between the molecule of the same substance is called cohesion force.
 The force of attraction between the molecules of different substance is called adhesion force.

     Water has both adhesive and cohesive properties. Adhesion of water to glass is stronger than the cohesion of water. hence, when water is spilled on a clean glass surface it wets the glass.

On the other hand, the cohesion of mercury is greater than the adhesion to glass. Thus, when mercury is spilled on glass it forms small spherical droplet or larger flattened droplets and does not wet glass.
Mercury forming a small spherical droplet on glass.

Effects of Cohesion

1) Surface tension: This is a property of liquid that gives it an elastic surface, this is as a result of cohesive forces between adjacent molecules. Here, the molecules at the main body of liquid are pulled equally in allowing directions by neighboring molecules.
       Water because of this property, heavier objects with less force compared to surface tension to float across it.

2) Meniscus: This is the property of liquid that gives it a curved surface. It has both cohesive and adhesive properties.

Meniscus property at the surface forming a concave and convex curve.

     If the cohesive forces between the liquid molecules is greater than its adhesive force, the surface will form a convex curve.
     If the adhesive forces between the liquid molecules is greater than the cohesive forces, the surface will form a concave curve.

  If  both the adhesive and cohesive forces are equal, the surface is horizontal.

3)  Capillary  action: Here, the cohesive and adhesive forces work together to keep the liquid away from its's natural forces of gravity. The cohesive forces causes the water to form droplets and the adhesive forces keeps the drop in place.
Capillary action
Capillary action on leaves.

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Saturday, 8 April 2017

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Measuring instruments: Micrometer screw gauge vs vernier caliper

Vernier caliper and micrometer screw gauge

Measuring instruments: Micrometer screw gauge vs vernier caliper

What is measurement?

     This is the bedrock of the trade and statistics used for centuries now. It is the ability of one to ascertain the height, size and quantity of something by comparison.
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