Introduction Styrene-[ethylene-(ethylene-propylene)]-styrene (SEEPS) is a styrenic thermoplastic elastomer (TPE). Basically it is a block copolymer with rigid styrene blocks and elastomeric ethylene-(ethylene-propylene) blocks. Styrene blocks function as hard segments those form physical cross-linking centers between elastomeric phase 1–3.  Because of so called physical-crosslinks, SEEPS is highly flexible with good recoverability and resilience those make it a promising material for various …

Introduction Shot peening ranks among the most important surface treatments and with the greatest potential for development in the near future also thanks to its ductility of use, which allows its application in many industrial sectors, and to the reduced environmental impact (shot peening does not require the disposal of toxic waste) 1-4. This treatment basically consists of bombarding the …

Today, the world is facing a lot of shortage of potable water due to the discharge of untreated industrial wastewater from the textiles, dying, pharmaceutical and paper industry into the natural resources that cause water pollution. This has led to a serious situation by reducing the quantity and quality of pure and potable water. Polluted water causes a long-lasting effect …

Introduction Wastewater, if managed well, can be an important water resource especially in maintaining environmental flows and groundwater recharge in dry seasons. In Harare, the water supply dams are situated downstream of the city in order to increase the catchment yields. However, this has brought to the fore the issue of pollution from untreated wastewater streams from both domestic and …

Introduction Construction history is a pillar for developing the modern-day construction strategies proposed by engineers. The authors have demonstrated several reports and ideas to make construction easy and reliable worldwide. Composite columns are built involving different blends of underlying steel and cement to utilize the beneficial properties of every material. The integral and interactive way of behaving of concrete and …

 Introduction GaN nanostructures have been widely studied, because of their physical and chemical properties compared to those of bulk structure1,2. Small size, band gap shifts and high surface to volume ratio were opened many possibilities for various potential applications in optoelectronics devices. To create GaN nanostructures there are two major methods, bottom up or top down. The bottom up growth …

Introduction The tribological properties of the interacting surfaces may be enhanced by the surface texturing of any one or both the surfaces in contact. The surface texturing methods like burnishing, vibro rolling, embossing, chemical etching, laser surface texturing etc. are generally used for the fabrication of textures on the interacting surfaces. Amongst all these laser surface texturing method is mostly …

Introduction The space-based solar power (SBSP) [1] means to gather solar energy in space and distribute it to Earth. Because there is no darkness in space, we can create more electric power. However, on Earth, 50 to 60% of solar energy is wasted as it travels through the atmosphere. Due to the high cost of transporting material into orbit, space-based …

Biosensors have been widely used in a variety of applications since its inception by Clark et.al., in 1962 including cancer diagnosis, toxin detection, food analysis, health prognosis, etc. 1-5. A biological receptor and a physical-chemical transducer are typically combined to form biosensors, analytical devices that translate biological responses into electrical signals. While the latter translates responses from the biochemical domain, …

Human population has been increased more than 10 times since industrial revolution and it is expected to increase more than 20% in the next 80 years. Considering the currently used materials and production techniques, 1-fold increase in population causes 1.8-fold increase in demands. This increase leads to development of new materials and production techniques. Today, annual material consumption has exceeded …

Introduction Wood is heterogeneous substance composed of cellulose, hemicelluloses andlignin1 and their composition varies among different morphological areas.2 It is a sustainable resource which has been used in both indoor and outdoor applications since ancient times. ToonaciliataM. Roem,is also known as the Red Cedar, Tuni and Indian Mahogany, of family Meliaceae, grows in a subtropical climate in moist localities such …

Introduction ZnO is very low cost and a nontoxic material that can be found naturally as rock salt, zinc blend and hexagonal structure wurtzite phase1-3. From these three different phases the wurtzite crystal system is the most common and famous demonstrated in several activity and stable in a wide range of variation of surrounding environmental conditions. The lattices constant of …

Introduction Graphene-based materials that are graphene, graphene oxide (GO) and reduced graphene oxide (rGO) have received considerable attention due to their high potential for many practical applications including creation of new materials and innovative electronics. Mostly, graphene-based materials are used in applications in the form of composites with other materials such as polymers because they enhance properties of such materials …

Introduction Since the early centuries, silver ions have been used as a biocide, antibacterial, disinfectant, and antiseptic against pandemic diseases such as cholera, eye infection, and burn wounds 1. Silver-based products have recently been employed in a variety of food industries, including food packaging materials, medical healthcare, and hard surface materials and textiles.2, 3. There is a lot of evidence …

Introduction Acinetobacter (Gram-negative) is a genus of microorganisms belonging to the proteobacteria family, whose species are found in a wide variety of environments1. The bacteria extensively spread in hospitals where they offer the risk of transmitting resistance to other pathogens2. Most of the bacterial infections are commonly caused by Staphylococci and it is considered to be the most important source of …

Introduction Water is a biological necessity of humans, plants, and animals on the earth. Less than 1% of freshwater is accessible from the ground water level for human consumption. In some cases, the resource does not satisfy the desirable levels regarding their chemical composition such as hardness, nitrate contamination, heavy metals, soluble iron, etc. Among these factors, water hardness is …

Introduction Coffee leaves have been used in food and medicine 1. It has a long history in tropical medicinal application 2. An attention has been gained for ethno-pharmacological applications due to its abundant bioactive phytochemicals such as phenolic acids, flavonoids, phytosterol, amino acids, alkaloids, carotenoids, terpenes, tannins, which are devoted to their anti-bacterial, anti-fungi, antioxidant, anti-hypertensive and anti-inflammatory activities. Type …

Introduction Magnetic materials are ubiquitous throughout industry. Two well-known major branches of magnetic materials are metallic magnetic materials and ceramic mag-oxides. These magnetic materials are called ferrites. There are three types of ferrite materials: spinels, garnets and hexaferrites 1-5. The spinels and garnets exist as cubic crystal structures, whereas the hexaferrites exist as hexagonal crystal structures. Basically, different crystal structures …

Introduction Material science is highly versatile branch which covers almost every field of science and technology. The new materials under the heading of nanotechnology are being reported by the researchers such as nanocomposites, modified semiconductors, transition metal doped materials, nanomaterial synthesis using plant extract etc. There is variety of materials reported by the researchers based on the green chemistry approach. …

Introduction Wire ropes with diamond beads used in machines for cutting blocks of stone are subjected to fatigue, contact fatigue, corrosion and corrosion-fatigue loads in an aggressive environment. As shown in Figure 1 1-3, multi-wire machines for cutting blocks of stone are made of two structural main components: the supporting structure, fixed with flanged bolts to the ground, (1 in …

Introduction Accurate and critical cleaning with the help of advance technique is now a day in industry as well as domestic are huge in demand to avoid situation like pandemic due to unwanted and unknown disorder. The rapid progression in various current advances and the reliable example in scaling down of parts have made a necessity for advanced tidiness levels. …

Introduction Cement is an essential construction material 1 since it is widely used as a binder in the making of mortar 2. Nevertheless, manufacturing of cement results in discharge of greenhouse gases in the environment 3. According to research conducted by Joseph Davidovit it was elaborated that while producing every ton of cement, about 1 ton of CO2 is released …