Process Control System Of Automation In Food Processing

Process control system of automation in food processing with diagrams and example Abstract: Proper or acceptable automation in food processing strongly relies on process control system. The topic describes the use of process control system in the automation of food processing and the problems associate with it. The aim is to explain the automation at the technical level and also to show the importance of related controllers, sensors and actuators. The automation in food processing is non-linear and it does not even change with time. Studies show that it is unstable as well. These properties have to be handled well by the automation system. The required sensors and relays are missing in the process so open loop control system is used here.†¦show more content†¦In manual system, a person will continuously keep an eye on the system parameters and when the parameter changes its value from ideal value, the control action will start to get that value back to the desired one. In automatic control system, the procedure parameters measured by different sensors and instrumen tation might be controlled by utilizing loops. A regular control loop comprises of three essential segments Sensor: It will sense the parameters and generate a signal for controller if there is any change in its value. Controller: It will compare both the values and generate a signal to know the difference between two values. Final control component: the last control component gets the control flag created by the controller and changes or adjusts the process by bringing the deliberate procedure property to come back to the set point, e.g. fluid stream can be controlled by changing the valve setting or the pump speed. CLOSED LOOP SYSTEM FOR FOOD PROCESSING As the system deals with a feedback it is called a closed loop system where sensor senses the variation in the parameter and send it back to controller, where error is detected and actuator does the repairing task. 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Shakespeare vs. Tom Stoppard Free Essays

Vikas Sharma Honors English Final Exam Essay 5-24-10 Stoppard vs. Shakespeare There are many ways love is presented thematically in A Midsummer Night’s Dream by William Shakespeare and Shakespeare in Love by Tom Stoppard. In a Midsummer Night’s Dream, love is off and on going between most of the characters which shows that love was difficult and not too strong between the characters, while in the play Shakespeare in Love, the love between Shakespeare and Viola seems to be pure and full of passion. We will write a custom essay sample on Shakespeare vs. Tom Stoppard or any similar topic only for you Order Now The idea for love in A Midsummer Night’s Dream starts out with Theseus and Hippolyta. Hippolyta, having been the Queen of the Amazons, has been conquered by Theseus and is therefore under obligation to marry him. Shakespeare presents this kind of love as forced love because Theseus has conquered Hippolyta which means that she is dutiful to Theseus. Throughout the story Hippolyta starts to accept Theseus which shows that the nature of their love is mature. The four main characters in A Midsummer Night’s Dream all have difficulty in their love which shows that it is true but also very young. As Lysander states in the novel â€Å"The course of true love never did run smooth. † He articulates on of A Midsummer Night’s Dreams most important themes. The theme of love’s difficulty is often explored through the motif of love out of balance—that is, romantic situations in which a disparity or inequality interferes with the harmony of a relationship. One of the reasons that love didn’t go smooth with Lysander is because of Egeus, Hermia’s father. By law he has power over her and what he wants for is daughter is what must happen. And by law, Hermia is expected to be dutiful to her father, by respecting and obeying him. His over-protective parenting style demands Hermia a new man, but Hermia’s and Lysander’s true love and determination brings them together. Despite the obstructions that face the couple, their love succeeds in the end to show true love is strong and with determination it prevails. This kind of love is similar with Shakespeare’s and Viola’s love in the movie Shakespeare in Love because throughout the play, there are many obstacles that prevent them from being together. One of the obstacles of their love is that Viola is forced to marry Lord Wessex because she has to obey her father but she does not truly love him. Her love is only with Shakespeare and with poetry. Their love for each other is very mature, and is full of true love, but sometimes does not run smooth just like Lysander’s relationship with Hermia. Next there was the love of Helena and Demetrius. The opposite of true love would be Helena’s and Demetrius’s relationship. Shakespeare uses magic in the story to bring in bizarre events and hilarious situations. One example of why there is awkward and difficult love between all the characters is because of the love potion. The love potion is made from the juice of a flower that was struck with one of Cupid’s misfired arrows; it is used by the fairies to wreak romantic havoc throughout Acts II, III, and IV. Because the meddling fairies are careless with the love potion, the situation of the young Athenian lovers becomes increasingly chaotic and confusing. Helena’s and Demetrius’s relationship is described in a simple sentence by Helena that states, â€Å"The more I love, the more he hateth me. â€Å". This evidently shows Helena’s love for Demetrius, and yet her love for him is not returned for he is blinded by his love for Hermia. This unrequited love shows the cruel nature of love. This kind of love is also seen in Shakespeare in Love by Viola and Sir Wessex. Wessex wants to marry Viola because of her power and money, but Viola in return does not agree to give Wessex her love and passion for it belongs to Shakespeare. This can also be seen as cruel love because the lover in return only gets misery and a broken heart. Finally, Oberon and Titania’s love can be seen as confusing but full of character. Their love starts out to be strong but as time goes by, Oberon become’s jealous. This can be seen as jealous love. This shows there are troubles present in their relationship, since the two do not appear to be on good terms. Oberon and Titania are arguing over the changeling boy, the son of one of Titania’s late friend. Oberon would like to possess this child, but Titania refuses to let him go. This shows that the nature of love can at times be irritating and troublesome and that the love between Oberon and Titania is most definitely not running smoothly. Throughout the story you can see Oberon’s jealousy increase as the story goes on. Jealously is a powerful emotion, and when mixed with love, it has devastating effects. Oberon’s jealousy grows, as Titania’s love for the changeling boy does, and as a result, the relationship between the two worsens as they grow apart from anger. Sir Wessex also starts to become jealous of William Shakespeare because his love with Viola is very passionate and true. Wessex knows that his desire to marry Viola for her money cannot become reality unless he does something to hurt Shakespeare’s and Viola’s relationship. In the end though, true love defines all odds and Shakespeare is meant to be with Viola. All in all there are many ways love is presented thematically between the characters in A Midsummer Night’s Dream by William Shakespeare and Shakespeare in Love by Tom Stoppard. Both authors present love thematically in different and similar ways using many methods. They both like to create bizarre scenes and like to complicate their characters loves. They both have similar but also different ideas to attract their fans and to complicate the scenes in their stories. How to cite Shakespeare vs. Tom Stoppard, Essay examples

Acupuncture An Alternative free essay sample

To support the life of an ailing individual and to relieve pain, the application of formal and conventional medical practice is not alone that can help. The application of complementary and alternative medicine may also relieve the patient of such sufferings. The National Center for Complementary and Alternative Medicine (NCCAM), National Institutes of Health has defined complementary and alternative medicine as â€Å"a group of diverse health care and medical systems, practices and products that are not presently considered to be part of the conventional medicine† (House Select, 2006 p.10). There is a distinction between the complementary medicine alone and alternative medicine alone. Complementary medicine is applied jointly with the conventional medicine such as the use of aromatherapy in reducing the patients pain after undergoing a surgery while alternative medicine is applied as a substitute for conventional medicine such as the use of special diet to treat cancer instead of following the physician’s recommendation to undergo surgery or chemotherapy. The NCCAM classifies complementary and alternative medicine into five major categories. They areà § 1.Alternative Medical Systems that are built upon absolute systems of theory and practice that have often developed before and apart from the conventional medicine of the U.S.A. Some of these are homeopathy, hydropathy and naturopathy as well as the Chinese traditional medicine and Ayurveda. 2. Mind-Body Interventions that use a variety of procedures intended to enhance the minds capacity to affect bodily function and symptoms such as meditating, praying, mental healing, and therapies that use creative outlets like art, music, or dance. 3.Biologically Based Therapies that use substances found in nature like herbs, foods, and vitamins. These kinds of therapies include dietary supplements, herbal products, and the use of other so-called natural but non-scientifically proven methods like the use of shark cartilage to treat cancer. 4.Manipulative and Body-Based Methods which is based upon manipulation and/or movement of one or more parts of the body like massage and chiropractic or osteopathic manipulation. 5.Energy Therapies that include the use of energy fields. It is divided into two subcategories, the biofield therapies and the bioelectromagnetic-based therapies.   Biofield therapies are intended to affect energy fields that purportedly surround and penetrate the human body such as the application of pressure and/or manipulation of the body by placing the hands in, or through   these fields, i.e., qi gong, reiki, and therapeutic touch. On the other hand the bioelectromagnetic-based therapies entail the unconventional use of electromagnetic fields, such as pulsed fields, magnetic fields, or alternating-current or direct-current fields. According to NCCAM, Acupuncture is an â€Å"energy medicine involving putative energy fields†, or the biofields. (Energy Medicine, 2004) II. What is Acupuncture, Its Philosophies, Purpose, and Treatment Principles? Acupuncture can alleviate prolonged pain, discomfort, and anxiety, and end severe dependence on a medical system so huge and impersonal that each patient feels like a forgotten cog in a machine.  (Cargill, 1994, p. 3) That is what Acupuncture can do according to Cargill. But what is it? NCCAM defines Acupuncture as â€Å"a family of procedures involving the stimulation of anatomical points on the body using a variety of techniques, the most common of which is the penetration in the skin with thin, solid, metallic needles that are either manipulated by the hands or by some electrical stimulation†. (An Introduction) The philosophical basis behind Acupuncture for traditional practitioners is the â€Å"qi† (Birch Felt, 1999, p. 88) or the so called vital energy. Qi flows through the twelve major energy pathways called meridians, each of these is connected to specific internal organs of the body or organ systems and â€Å"three hundred sixty-five to two thousand acupoints† (Freeman Lawlis, 2001, p. 311). This qi is blocked when there is imbalance of yin and yang, â€Å"two opposing and inseparable forces†(An Introduction), in the body thereby causing illnesses. Acupuncture can relieve the ailment by unblocking the qi through the insertion of needles at specific anatomic points in the body. Simply stated, the purpose of Acupuncture is to heal or therapeutic. Some healing results of acupuncture, according to research, include alleviation of low back pain, headache, pain from osteoarthritis, neck pain, musculoskeletal and myofascial pain, organic pain, and pain before and after surgery. It has also been used for the treatment of postoperative and chemotherapy-induced nausea, neurologic dysfunction, gynecologic and obstetric conditions, asthma, and substance abuse. With Acupuncture, illness or sickness is prevented while better health is restored. III. Brief Summary and Evolution of Acupuncture Acupuncture evolved from the traditional Chinese medicine (TCM). Earliest evidence regarding this practice can be found in the text, â€Å"The Yellow Emperors Inner Classic (Huang Di Nei Jing), a collection of 81 treatises compiled between 206 BC and 220 AD†Ã‚  (Freeman Lawlis, 2001, p. 316) However, Freeman and Lawlis further noted that â€Å"the oldest surviving classical text dedicated entirely to acupuncture was written sometime in 282 AD by Huang-Fu Mi† entitled, The Comprehensive Manual of Acupuncture and Moxibustion (Zhen Jiu Jia Yi Jing). This book contains the combined classical concepts concerning the theories and teachings of acupuncture points, channels, and the cause of illness, diagnosis, and therapeutic needling  (Freeman Lawlis, 2001, p. 316) It was in 618 AD when the practice reached its peak in China with the foundation of the Imperial Medical College. During this period, the practice was spreading its influence over other Asian nations such as Japan, Korea and Southeast Asia. Acupuncture attained maximum refinements at the end of the sixteenth century. Although it was in 1971 when Acupuncture became popularly recognized in the United States of America (USA), awareness about this therapeutic practice has been introduced in the country long before this period. The first records and studies of the practice became known to the Americans in 1825 in the publication of Morands Memoir on Acupuncturation, a document translated from French by Franklin Bache. However, it was in 1971 when the New York Times correspondent James Reston note down his experience about Acupuncture describing how medical professionals in China utilized needles to alleviate his pain after he have undergone surgery. Currently, the NCCAM reported that in the USA Acupuncture is being widely practiced by thousands of   related medical practitioners such as physicians, dentists, acupuncturists, and other practitioners mainly for alleviation and avoidance of pain and for other health purposes. In fact it was reported that in 2002, the survey showed that 8.2 million of the American adults have made use of Acupuncture. IV. Hazards of the Practice and Its Licensing and Regulatory Requirements The NCCAM provides in its website that the use of Acupuncture has a relatively lower account in terms of health problems and complication despite the huge number of treated individuals in America. Generally the negative complications resulted from the use of inadequately sterilized needles causing serious undesirable effects, including infections and punctured organs. Moreover improper needle placement, patient movements, or a defective needle may cause to tenderness, discomfort, soreness and pain during treatment. The Food and Drug Administration (FDA) regulates acupuncture needles. These needles should be used by licensed practitioners only and need to be manufactured and labeled according to the required standards on   sterilization, nontoxic quality, and must be labeled for single use by qualified practitioners only. Public hearings held   on April 25, 2006 in Asheville, and on September 27, 2006 in New Bern in North Carolina have acknowledged issues regarding the following safety measures in alternative medical practice: a.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Practitioners Training, Qualifications and Credentials of Acupuncturists b.  Ã‚  Ã‚  Ã‚  Ã‚   Consumer Protection of patients c.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Insurance Coverage of patients for possible health problems and side effects d.  Ã‚  Ã‚  Ã‚  Ã‚   An Oversight- Regulatory Board to regulate and control the practice ensuring public safety. Finally, for public awareness the NCCAM Clearinghouse provides information on CAM and NCCAM, as well as publications and searches of Federal databases of medical and scientific texts in service to the American nation regarding alternative medicines. References An Introduction to Acupuncture. (2007). NCCAM Publication No.  D404, NCCAM, National Institutes of Health. Retrieved 15 May 2008 from http://nccam.nih.gov/health/acupuncture/ Birch, S. J., Felt, R. L. (1999).  Understanding Acupuncture. New York: Churchill Livingstone. Retrieved May 15, 2008, from Questia database: http://www.questia.com/PM.qst?a=od=100223449 Cargill, M. (1994).  Acupuncture: A Viable Medical Alternative. Westport, CT: Praeger Publishers. Retrieved May 15, 2008, from Questia database: http://www.questia.com/PM.qst?a=od=81902256 Energy Medicine: An Overview. (2004). NCCAM Publication No.  D235, NCCAM, National Institutes of Health. Retrieved 15 May 2008 from http://nccam.nih.gov/health/backgrounds/energymed.htm Freeman, L. W., Lawlis, G. F. (2001).  Mosbys Complementary Alternative Medicine: A Research-Based Approach. St. Louis, MO: Mosby. Retrieved May 15, 2008, from Questia database: http://www.questia.com/PM.qst?a=od=100735773 House Select Study on Complementary and Alternative Medicine, Final Report to the House of Representatives 2007 North Carolina General Assembly. (2006). Retrieved 15 May 2008, from http://www.ncga.state.nc.us/documentsites/legislativepublications/Study%20Reports%20to%20the%202007%20NCGA/Complementary%20and%20Alternative%20Medicine.pdf