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The Quality of Locally-manufactured Cornmill Grinding Plates

Corn mill A KNUST research has revealed people who consume corn-related foods risk contracting all kinds of cancers According to the research, the locally manufactured machine used to grind the corn into dough food wears off faster into the dry maize, thus contaminating it. A study by two lead researchers at the Kwame Nkrumah University of Science and Technology (KNUST) has revealed that consumers of corn-related foods risk contracting all kinds of cancers. The research was undertaken by Prof. Kwofie, who is the Dean of the Faculty of Mechanical and Chemical Engineering (former) of the College of Engineering, and Dr. Anthony Andrews (now Professor) , the Head of Department (former)  for Materials Engineering . The study found that the metals used for the milling plates usually wear off when the food products are being grinded. This, the study said, opens consumers to the risk of contracting cancer, since the metals contain 'iron overloads' which are poisonous. ...

Personality of The Week: Prof Anthony Andrews

Our Personality for this week is none other than Professor Anthony Andrews. On Personality Dialogue today, we bring to you a profile of this outstanding Personality, a Royal and Santa Clausian. PERSONALITY PROFILE Professor Anthony Andrews is a lecturer at the Department Materials Engineering (DMSE), KNUST and is one of Africa’s youngest and most refined professors especially in the field of engineering. His extremely rich blend of academic, research and professional knowledge and experience makes him an ace in his field and beyond. EDUCATION He obtained his SSSCE at Adisadel College, Cape Coast in the year 1996.  He studied B.Sc. Mineral Processing and Extractive Metallurgy at KNUST. He has an M.Sc. in Materials Engineering from the University of the Witwatersrand, South Africa and a Ph.D. in Materials Engineering from the same institution. His M.Sc. research focused on corrosion engineering while his Ph.D. was on ceramics engineering. PROFESSIONAL EXPERIENCE He joined...
 Meet our personality of the week,our Immediate Past President Mr.Samuel Kweku Afari Can you tell us about yourself?   I am Samuel Kweku Afari, born on the 4th of March 1998. I am 23 years of age and I pride myself to be the only child of my parents. I come from Abesim in the Bono Region where I started the earlier part of my junior high education at Sacred Heart Preparatory School.  I moved to Tarkwa to continue my junior education at Golden Age School complex and that is where I had my Basic Education Certificate after completion in 2014. By God’s grace, I went on to have my senior high school education at St John’s School in Sekondi where I read General Science. Whilst in St. Johns School I served as the Sports Prefect (2016/2017). I completed St. Johns School in the year 2017 and by God’s grace had the opportunity to start my university education the same year at my dream university, KNUST.  I am currently in my final year reading BSc. Metallurgical Engineering a...

The Chemistry between Matter and Communication

[Opinion - 5 min read] In this article, I use communication and language; matter and material interchangeably. Basically, both are related in this way – without matter, there is no communication, meaning that matter is the object of communication. The aim of this write-up is for us to appreciate the fact that communication is a key factor in our daily living and hence we must pay critical attention thereof. Let's understand some underlying terms herein as we move on. Communication is the means by which different matter relate with other; it can be verbal or non-verbal, interpersonal or intrapersonal, etc. We communicate mainly through our actions, speech and thoughts. Matter is what makes up the physical world; the things that can be seen or felt, including people and other material in the environment. [Read also: Dear Writer!  ] Having gotten these, let us now look at how communication (language) affects material (matter) in these four well-known areas: Busin...

Alternate Building Materials Used in The Construction Industry

PC: theconstructor.org Alternate building materials are those which can be used economically by replacing the conventional building materials. Alternate building materials are made from waste products and thus they minimize environmental pollution. These alternate building materials can be used when they meet their respective specifications in the code of practice. Here are some novel construction materials and technology, with some briefly discussed: Aluminum Bitumen Materials Soil Conditioning Agents Tempered Glass Crumb Rubber Fiber Reinforced Polymer Glass Fiber Reinforced Plastics Bamboo reinforced plastics Ferro-cement Polyester Fibers ALUMINIUM sound-proof-aluminium-construction. PC: theconstructor.org More than 3000 commercialized applications. 35 percent aluminum produced is used in construction. Non-Corrosive. High durability and low maintenance. Can be alloyed. Ductile and malleable. Aesthetically attractive. Applications of Aluminum In...

Universal adhesive that works under water?

The PDMS/PTFE adhesive in action Sticking different material surfaces together is vital in a huge range of applications from electronics to biomedicine, but finding an adhesive that works instantaneously under damp or wet conditions is difficult. But now a team of researchers believes that they have come up with a universal adhesive that works in both air and underwater [Chipara et al., Materials Today Chemistry 9 (2018) 149]. The adhesive is a simple mixture of equal amounts of liquid and solid polymers, says Chandra Sekhar Tiwary of Rice University and the Indian Institute of Technology, who led the research along with Pulikel M. Ajayan and colleagues at Penn State University, Bruker Nano Surfaces, State University of Campinas in Brazil, University of Texas-Rio Grande Valley, Baylor College of Medicine, and the US Army Research Laboratory at Adelphi. When mixed together, liquid polydimethylsiloxane (PDMS) infiltrates between the solid particles of polytetrafluoroethylene (...

When the Lass I was Loving for Years Finally said Yes!: Episode 3

Episode 3 (Final): The D-Day Presently, both of our families were aware of our relationship. Akos was an only daughter, but not an only child, as she had a brother who was as fine as herself. It seemed to me that fineness ran throughout the family--from dad to mum to children. Akos was much like her mother, and her brother, Yaw, who was older than her, took the form of her father. I had met Yaw a couple of times on campus, when he used to come visit her dear sister. As time elapsed, I became a family friend to the Sarpongs. The D-day finally arrived. I went to Akos’ residence to pick her up for our much anticipated Friday night time-out. Luckily for us it was a holiday, so we both had time to rest from the week’s busi-ness. Of course, holidays bring some delight to those whose weekly schedules are largely occupied by work or school--and without a doubt, the greater joy goes to our dear students. Operation Neptune  arrived at her residence in a black Chevrolet Cruze...

Personality of The Week: Dr Albert Adjaottor

POTW - Dr A. A. Adjaottor Our Personality for this week is Dr Albert Amatey Adjaottor, popularly known by his students as Integrity. We had an interesting interview session with him which has been passively documented. Enjoy the read as you learn something valuable. PROFILE Dr Albert Amatey Adjaottor is a senior lecturer at the Department of Materials Engineering. He also doubles as the International Students Officer for the College of Engineering. Some of of the courses he lectures at the undergraduate level include Transport Phenomena in Materials Processing and Polymer Engineering. EDUCATION Dr Adjaottor as he is commonly referred to attended Achimota School in Accra. He began schooling in 1973 and completed in 1980, spending a total of 7 years to acquire his O’ level and A’ level certificates. He explained that O’ level (Ordinary level) took 5 years to complete, which spanned form 1 to form 5. He also added that A’ (Advanced level) took 2 years to complete, which were low...

New 'Artificial Leaf' That Converts Carbon Dioxide Into Fuel

Scientists have created an “artificial leaf” to fight climate change by inexpensively converting harmful carbon dioxide (CO2) into a useful alternative fuel. The new technology, outlined in a paper published on November 4, 2019, in the journal Nature Energy, was inspired by the way plants use energy from sunlight to turn carbon dioxide into food. “We call it an artificial leaf because it mimics real leaves and the process of photosynthesis,” said Yimin Wu, an engineering professor at the University of Waterloo who led the research. “A leaf produces glucose and oxygen. We produce methanol and oxygen.” Making methanol from carbon dioxide, the primary contributor to global warming, would both reduce greenhouse gas emissions and provide a substitute for the fossil fuels that create them. The key to the process is a cheap, optimized red powder called cuprous oxide. An hour-long chemical reaction creates the engineered red powder that is the key to new technology to tur...

When the Lass I was Loving for Years Finally Said Yes!: Episode 2

Episode 2: Scaling Up Our Friendship It was on one occasion of a date at Chilly Bowl, in the first semester of my final year, that I asked if she would be my girlfriend. (The bond had become too strong to break, and I didn’t want to graduate 4-0, hahaha ). She was stunned at first, and I got stunned too. She asked me to give her some time to think it over. I gladly consented, but deep within I feared I would be bounced . As I patiently waited for my dear Akos to give me a favourable response, I would often get beset with mixed feelings. I told my roommate I had proposed to Akos. Kwao: Boy you for pray say she go accept oo. Me: What else chale. My love for her has transcended the skies. Kwao: You den your vibes. Me: No be small punch line oo chale. But e go source. After about two weeks since we last met at Chilly Bowl, I picked up my phone one Saturday evening to answer a call, and surprisingly, it was Akos. I hadn’t heard from after our recent date. We exchange...