8.3 Rheological properties of WPC Rheological behavior helps to elucidate the fundamental flow behavior of composite melts, and can directly or indirectly reflect the processing performance, internal structure, and physical and mechanical performance of WPCs. For the economical consideration, researchers are attempted to incorporate high amount of wood flour. So, a clear insight of the rheological behavior is necessary in such high wood content to facilities the processing. In addition, additives are frequently used to modify processing or end properties of WPC formulations and proper rheological tests may prove useful in characterizing the efficiency of these additives [13]. The melt flow index (MFI) is one of the rheological parameter of the polymer and is a measure of molecular weight and molecular weight distribution characteristics of plastics. Plastics with higher MFI have shorter chains and low molecular weight and low viscosity whereas low MFI indicates longer chain and high molecular weight and high viscosity. The viscosity of the WPCs …show more content…
It was found that in scratch resistance testing, all wood composites have lower penetration and residual depths compared to neat HDPE. Polymer composites containing untreated wood flour show less viscoelastic recovery, while composites containing modified wood flour (modified with sol-gel silica particle and/or 3-methacryloxypropyl-trimethoxysilane, MPS) gave lower value of the residual depth. The overall high scratch was found in composites, R-HDPE + 50 wt-% wood/sol-gel silica and R-HDPE + 50.0 wt-% wood/3MPS samples. The lowest friction was observed in neat polymer while highest friction was observed in wood polymer composites. Between modified and un modified wood, the friction of the composites containing modified wood showed the lowest friction compared to composites containing the neat or unmodified wood
Adults A Child and Youth Professional (CYC) supports adults in their lives in countless ways. They act as advocates, mentors and teachers to parents that are or have been in difficult situations. Some of these situations are, but not limited to, teaching parents to cook and clean, creating a safe environment for their children that may be involved, and facilitating crisis intervention. As a CYC helping parents and young adults, there are two approaches that are used. The term for the first approach is the surface approach.
Women, Infants and Children (WIC) was established “ To safeguard the health of low-income women, infants, and children up to age 5 who are at nutrition risk by providing nutritious foods to supplement diets, information on healthy eating, and referrals to health care.” In this paper one will weigh the pros and cons, review the information given and come to an overall opinion of the program.
Chemically all polymeric materials comprise of hydro-carbon chains and usually have high heat of combustion. When they are exposed to fire, they burn rapidly with the release of high amount of heat, flame and smoke. Similarly the natural fibers, wood flour, are highly combustible and burn rapidly. So for safely use of the composites materials they must have flame retardant properties as well.
COMMUNICATION SYSTEM What are the strengths and weaknesses of Telerik’s communication strategy and practices? Strengths :- 1. What is the difference between a. and a. Employees at Telerik work in an open space. The atmosphere is informal, flexible and open.
In the year 2000, Cisco Systems had delighted in forty-quarters characterized by a staggering growth. At some instance, it had outdone GE as a highly valued business globally. Cisco was faced with the fortunate challenge being unable to meet its demand. As a solution, it ventured into long-term obligations with its major component producers and manufacturing partners. In addition, it also built up its constituent inventories. Because of communication gaps amid the numerous levels of the company’s suppliers, triple, and double orders were implemented in order to lock in limited components in the boom. The company was entangled in a spiteful cycle of theatrically inflated sale estimates. Cisco never saw
In modern day business, there can be so many pressures that can cause managers to commit fraud, even though it often starts as just a little bit at first, but will spiral out of control with time. In the case of WorldCom, there were several pressures that led executives and managers to “cook the books.” Much of WorldCom’s initial growth and success was due to acquisitions. Over time, WorldCom discovered that there were no more opportunities for growth through acquisitions when the U.S. Department of Justice disallowed the acquisition of Sprint.
WorldCom started as a small long distance telephone service provider in 1983. In the 1990’s, companies were able to attain cheap and plentiful financing. This allowed them to quickly build transcontinental and transoceanic fiber optic networks. This allowed the company to grow financially and increase its customer base. In 1997, WorldCom merged with MCI Communications to become the second largest long distance telephone service behind AT&T. The merger of WorldCom and MCI was the largest corporate merger in US history at that time. Over the next six years, MCI WorldCom successfully acquired 65 other companies in order to expand their services and capabilities even more. Increasing its capacity helped keep WorldCom’s prices lower for its services,
WorldCom, US second largest telecommunication company in the United States behind AT&T, was founded in 1983. The company starts their business under the name “Long Distance Discount Services” (LDDS), providing long distance telecommunication services. The company was profitable from the start. In 1985, Bernie Ebbers became the company’s CEO. The company changes its name to WorldCom in 1995. During the 1990’s, the company starts to grow through series of successful acquisition and merger. However, during the late 1999, the company’s performance begins to decline due to heightened competition and reduced demand for telecommunication services.
composition on the rheological properties of a biscuit industry dough. International Journal of Food Science & Technology, 42(6), 649-657.
In 1984, Long Distance Discount Service (LDDS) was created by Murray Waldron and William Rector in Hattiesburg, Mississippi and began operations as a long distance reseller. Bernie Ebbers was named CEO the next year. Ebbers was able to grow the company through numerous acquisitions and mergers over the course of 15 years. After expanding around the globe the company changed their name to WorldCom. (Ferrell 1) WorldCom was able to complete 65 acquisitions in this time and became an industry leader in telecommunications. However, WorldCom began overextending themselves in their quest for acquisitions which started their downfall (Patra 172).
The development of composite material in the aerospace industry started when Douglas Aircraft Company bought the first roll of fiberglass shipped to the west coast because they believed that the fiberglass would help them solve a production problem. During the production process, the plastic molds were aimed to be reinforced with fiberglass such that it would become strong enough to allow at least a few parts to be made so that the new designs could be quickly verified. Indeed the fiberglass reinforcement did in fact prove to be stronger and it was a successful process. Moreover, new composites were made from fiberglass material and phenolic resin which the only resin available at the time. This was indeed a successful period for composite materials and more interest were attracted by many applications.
The late 90’s ushered in a new economy, IPO-funded .com companies. Apparently, investors believed that this new economy was the next big thing. Consequently, this belief, fostered in over-priced stock value. For instance, companies that had never produced any revenue, witnessed their stock trading at enormous value. Therefore, overnight a lot of executives and employees became millionaires (Ljungqvist, & Wilhelm, 2003). Unfortunately, at the time, there was a myth about how successful these companies would be. Moreover, investors were not interested with the bottom lines of these companies. For this reason, a lot of companies took on massive amounts of debts to grow with the new economy. Nevertheless, at the same time, Microsoft was declared
Communication is the basis by which a company can become successful and achieve a competitive advantage. Information must be able to flow between departments especially if such departments are located globally. The need for communication is what generated the idea that became the company known as Cisco. Husband and wife Len Bosack and Sandy Lerner, both working for Stanford University, wanted to email each other from their respective offices located in different buildings but were unable to due to technological shortcomings (The Network, 2016). The need for communication brought Bosak and Lerner to create the first multi-protocol router, which was the start of Cisco. The name Cisco was derived from the city San Francisco
Fiber architecture of composite properties usually revolves around the fiber geometry, packing arrangement, fiber orientation, and fiber volume fraction that in particular influencing their mechanical properties. The topmost being fiber volume fraction (Vf) which without doubt single handedly steers most mechanical properties that increases with increasing Vf up to a certain point. The geometry of
Cisco’s networking hardware is a fundamental part of business, education, government and home communications. They have transformed how people communicate and collaborate over the Internet. An unexpected surge in demand for essential network products caught Cisco and its manufacturing partners off guard. Backorders and shortfalls abounded as sales attempted rebound, resulting in the new light of virtual inventory management.