Examining Strategies For Improving Medication Administration Nursing Essay

Examining Strategies For Improving Medication Administration Nursing Essay Providing care for the patient is the responsibility of nurses. Nurses are the one who are close with patients. They are responsible and accountable to make sure that the treatments and needs of patient are fulfilled. Medication administration is a part of the nurses responsibility in order to make sure clients get the correct medication as supposed. Medication administration error is a universal health care concern.Thus the strategy in improving medication administration system is important to enhance safety. The administration of medication by nurses is the final step in a process that involves multiple steps carried out by a number of health professionals (medical practitioners, pharmacists and registered nurses). The accuracy, efficiency and safety of administration of medications rest primarily with nurses. Medication administration is an activity that is prone to errors, in part because of the development of new medical devices and new drug products that available to fulfill the demand in health care setting. Thus to prevent medication administration error, six rights should be main concern for the nurses in giving medication. There are many type of medical error that leads to injury and may jeopardize patients safety. According to Hughes and Ortiz (2005) the most common type of medical error that happen universally is medication error. Senior citizens are at the highest risk of being affected by this type of errors, since they are the largest consumers of medication (New Tech Media, 2006). However, this is especially true in regards to medication errors. A proper understanding of the contributing factors that increase medication errors is the first step toward preventing them. There are many factors, such as training deficiencies, undue time pressure, and nursing shortages that may have contribute to medication errors. The amount of nursing education and the years of nursing experience are two factors that may have relationship to medication errors. Due to the fact that nursing staff is a large cost to hospitals, these organizations are constantly trying to manage expenses. This is supported by Yang (2003 ) who states nursing professionals typically represent the largest employee group in hospitals, and have become a primary target for redesign measures. Consequently, medication errors are costly and seem to be proportional to the staffing of nurses. Since nurses make up such a large portion of the staff population, it is important to understand the incidents that influence behind these medication errors. These issues of medication errors were present even at the time when Benjamin Franklin founded Americas first hospital and he stated that patients ultimately suffer and die without good nursing care (Clarke, 2003). 1.2 PROBLEM STATEMENT Health care professionals work is hectic and stressful. All the heavy workload had causes the nurses to pay much less attention in giving proper medication administration to patients.I discovered during my clinical posting that sometimes the nurses tend to take for granted so as whether the patient did consume the medications given or not after leaving the medication on the patients bedside . Occasionally proper procedure was not followed by nurses for medication administration. It happens when the nurses just copy down the name of patient in a piece of paper during pass over the report , without rechecking in the patients medication administration record. This unintentional act sometimes will lead to medication administration error when bed of the patient is exchange with another patient or the patient has been transferred to the other ward or may be discharged from the hospital . There is also happen an error due to some of the nurses borrowing medication from another patients cart and administering an unlabelled medication or syringe. This improper practice will harm the patients and can cause medication administration errors. On the other cases, the nurses do not follow the correct time for medication administration. For instance, they just merely combine the medication that should be given at 4p.m with 6p.m. In that case, the effectiveness and toxicity of medication can be query. Thus, medication error can be some way again linked to an inconsistency applying the six rights of medication administration. Definition of terms Nurses A person educated and trained to care for the sick or disabled; One that serves as a nurturing or fostering influence or means (C.L.R James,2009 ) Working experience Work experience is the linking of a period of activity in a work setting (whether paid or voluntary) to the programme of study, irrespective of whether the work experience is an integral part of the programme of study(Harveyet al,2002) Incident Any other incident in which researcher is unsure about exposure potential. 1.3 SIGNIFICANCE OF THE STUDY Medication administration is a crucial part in nursing . Having a study concerning the incident of contributing factors that lead to medication error is important as this study creates awareness about the medication error and it consequences will affect patients safety. Such prevention methods could be taken to reduce the cases of medication error in hospital setting. Through this study, the management team of the hospital may take a serious action to solve the problem arised. Besides that, the nurses may realize the significance of medication administration process to overcome the factors that contribute to medication administration error. Furthermore, nurses need to perform their duty in ethical manner and obey the correct standard procedures as guided by the ministry of health. The function beyond the limit of nursing practice acts or ones ability is to endanger clients life will put the nurses open to malpractice suits such medication administration error. Therefore, it is crucial part for nurses to always be aware of entire the medication administration process in order to maintain the safety of the patient. 1.4 RESEARCH OBJECTIVE 1.4.1 General Objective The general objective for this study is to provide reasons about incidence of factors that contribute to medication error among the nurses. This study also helps to determine the barrier towards medication error which can used as guidelines for the nurses to be more caution on certain situation during administering medication in the hope of facilitating improvements to medication administration processes. 1.4.2 Specific Objective The specific objectives of conducting this research are: 1) To identify the most factors which contribute to medication error 2) To indicate the relationship between working experience with all the contributing factors which potentially lead to medication error 1.5 RESEARCH QUESTIONS What are the commonest factors that contributed to medication error perceived by nurses? Is there any relationship between working experience with all the contributing factors which potentially lead to medication error? 1.6 ADVANTAGES OF RESEARCH 1. This study able to provide reasons about factors that contribute to medication error among the nurses. 2. This study helps to determine the barrier towards medication error which can used as guidelines for the nurses to be more caution on certain situation during serving medication LITERATURE REVIEW Introduction Nurses are the group of health care providers who are closest to the patients. They have a major responsibility in administration of medication for patients, particularly in the wards. The issue of medication administration error (MAE) within the acute-care setting has long been the focus of research. Since nurses are intimately involved in the delivery of medications and the final person who occupy the link on medication administration, thus they are accountable for the responsibilities in medication error. It is important for nurses to understand the factors that contributed to medication administration errors in view of the fact that the burden of reporting medication error falls heavily on nurses. Prevalence of medication error Medical errors harm an estimated 1.5 million people and kill several thousand each year in the United States of America (Joint Comission International ,2007).In Malaysia the Malaysian government does emphasize on the medication safety whereby the government encourages researchers to conduct research on medication safety (Institute for Health Systems Research ,2008). In view of the fact that the prevalance of medication administration error is increasing globally, the serious action should be taken to minize it from occur. Medication The oxford Concise Medical Dictionary stated that, medication is a substance that is administered by mouth, applied to the body, or introduced into the body for the purpose of treatment (p.417). Medication Administration In administration of medication, the nurses must follow several principles that have been set up to prevent medication administration error. While administering medication, the nurses should implement the Six Rights to make sure the effectiveness of the drug effects and gain improvement in treating the disease. The six rights are involved before, during and after giving the medication. According to Bennet (2008), the six rights of medication administration includes the following; right medication, right dose, right client, right route, right time and right documentation. It is a must for the nurses to follow the standard protocol outlined for the implementation of medication administration. Medication administration error An article from joint comission international (2007) stated that errors are common as medications are procured, prescribed, dispensed, administered, and monitored but, they occur most frequently during the prescribing and administering actions. Since, the parts of administering process are bound to nurses job, so that they are responsible for their action and conduct. Mayo et al (2004) found that some medication errors are not reported because nurses are afraid of the reaction they will receive from the Nurse Manager. Hence, the real incident of medication error that occurred cannot be measurable since the nurses do not take responsibility to report the incident. Medication usage is a multidisciplinary process, which begins with the doctors prescription, is followed by the review and provision of medications by a pharmacist, and ends with the preparation and administration of the medication to the patient by a nurse. Inadvertent errors or accidents are encountered if there is a break down at any stage in this process, which leads to overwhelming consequences for the patient and for the career of the healthcare professional (Gladstone 1995). The impact of medication errors can be devastating to the confidence and self-esteem of the healthcare professional. Consequently, healthcare professionals are unwilling and indisposed to report any medication error unless there is an obvious harm to the patient. Factors that contribute to medication error Nurses need to prioritize significant responsibilities for safe patient care. In this hectic and stressful environment, serious medication errors are appearing significantly as a basis for successful malpractice cases against nurses (Lilley et. al, 2005). Proper medication process and system analysis approach are the essential link in the prevention of medication errors from occurring in health care setting. Asim and Nagy ( 2007) in their study showed that there were statistically significant differences in responses across the participants years of experience and the current clinical working area about the medication error to occurred. Research done by Fu et al.(2007) showed that medical wards and intensive critical units are the commonest areas for medication error. Knowledge and practice Henry (2005) revealed that, most of the types of medication administration errors occurring are due to omission of dose, wrong doses. The other study done by Fu et al. (2007) showed the wrong dose is at the highest to occur. Undeniable to say that, most of the errors can occur when the nursing duty during medication administration is not taken seriously. In addition, medication error can occur due to nurse attitude who do not check whether the right patient received the right medication. Medication administration error can occur when the nurse failed to check the patients arm band with the patients medication administration record or calling the patient by name to make sure the right patient receiving the medication. According to (Nancy et.al 2003 ; Ulanimo et al, 2007) through their observations that had been done, they found that nurses were failing to compare the patients wristband with the medication administration record before giving the medication to the respected patient. Whats more, spelling errors and the similarities amongst the appearance different medication can cause confusing to the nurses. Unfamiliarity with drug medication such as new drug name with similar drug packing can cause medication administration error Fu et al (2007). The potential for medication errors will increase and leads to injury to the patient. Cases reported by FDA-Food and drug administration (2008); medication errors associated with Flomax and Volmax, Zantac and Zyrtec caused patient to suffer. For that reasons, unfamiliarity with the medication can cause the medication error to occur. Besides drug administration, there are other factors that lead to medication errors taking place such as interruptions while administering the medication. In the research done by Pape et al.( 2005) ,it mentioned that conversations with other staff members and visitors or multi-tasking that occurs during medication preparation and administration can result in errors. Thus, the normal procedures for checking the six rights are easily neglected. So that, reducing unnecessary conversation and other distractions is an important aspect in administering medication safely to patients. Personal issues Abandon the six essential rights of administering the medication, are latent conditions evidenced to be a part of factors that contribute to medication error. Personal factors mentioned in connection with prescribing errors included physical and mental well being, skills, and knowledge. However, there are few associated factors that contributed to medication error to happen among nurses. The factors are time pressures, fatigue or exhaustion a part of nurses (Mayo et al; Ulanimo et al, 2007). Study by Nick Barber et al (2002), 18 interviewees reported that they had felt tired, hungry, or unwell, and that these factors might have contributed to the error. A considerable percentage of reported that they omitted to give medication or gave at the wrong time, and also indicated that other nurses gave incorrect medication or incorrectly administered treatments; practice issues which were related to the nursing shortage and causing moral distress (Marj.T Mrayyam,2011). Healy and McKay (2000) also found workload to be most significantly correlated with mood disturbance. However, Payne (2001) did not find a significant relationship between workload and burnout, although levels of burnout in her study were lower than in related studies. The reasons for this variation are unclear, but seem likely to include differences of stress hardiness (Simoni Paterson 1997), of coping mechanisms (Payne 2001), of age and experience (McNeese-Smith 2000) or of the level of social support in the workplace (Ceslowitz 1989, Morano 1993, Healy McKay 2000). Hospital setting and workload The terms hectic, hassly, and busier than average were used to describe workload. Sometimes, workloads made nurses change their usual practice to try and save time From the study, it was shown that, it is not only the practice itself that contribute to medication administration error but other external factors can also contributed to medication errors such understaffing, inexperience nurses, design deficiencies, and inadequate equipment while administering the medication( Carlton Bleggen, 2006). Nurses and workload is one of the major factors that should be considered .Most of the hospitals are lacking of nurses and this small issues will lead to big impact of nurses practice. Stordeur et al. (2001) attempted to rank stressors in order of severity of impact, the main ones being ranked as: à ¢Ã¢â€š ¬Ã‚ ¢ High workload, à ¢Ã¢â€š ¬Ã‚ ¢ Conflict with other nurses/physicians, à ¢Ã¢â€š ¬Ã‚ ¢ experiencing a lack of clarity about tasks/goals, à ¢Ã¢â€š ¬Ã‚ ¢ a head nurse who closely monitors the performance of staff in order to detect mistakes and to take corrective action. Lack of staff Staffing issues were also mentioned and included inadequate staffing, the effects of new or locum staff, and attending to another doctors patient. Providing cover for absent colleagues not only increased workload but also meant that care was being given for patients the doctor did not know. Several doctors drew the distinction between those patients whom they had admitted and knew throughout their stay, and those whom they had to take over for only part of their treatment. The most commonly used unit-level workload measure is the nurse-patient ratio( Pronovost PJ et al (2000). The nurse-patient ratio can be used to compare units and their patient outcomes in relation to nursing staffing. Previous research provides strong evidence that high nursing workloads at the unit level have a negative impact on patient outcomes (Olson V et al, 2004). Hospital nurse staffing is a matter of major concern because of the effects it can have on patient safety and quality of care. Nursing-sensitive outcomes are one indicator of quality of care and may be defined as variable patient or family caregiver state, condition, or perception responsive to nursing intervention (Needleman et al, 2003) Briefly, medication administration error should be avoided because direct results of the error can cause harm to the patient as well as increased health care costs. Moreover, indirect results include harm to nurses in terms of professional and personal status, confidence, and practice. Thus, to maintain the professionalism in delivering of care to the patient, medication administration process should take seriously among the nurses. In a 1999 study conducted by the Institute of Medicine, entitled To Err Is Human: Building a Safer Health System, It is estimated that medication errors cause over 7,000 deaths annually. This chapter will explain on the research methodology of the study consist of research design, population, sample, setting and data-collection instrument. 2.1 Research design Research design is an overall plan for conducting study on order to answer the research questions (Polit et al; 2001: 67). The research designs signify the steps which will be used in conducting the research. According to Burns and Grove (2001:223) , research design is a guideline for the research process in order to achieve the intended result which will be the reflection of reality. Polit (1999:155) state that the research design will includes the most important decisions in research methodology that researcher makes in conducting the study. This study used cross-sectional; quantitative non-experimental correlation study using assisted-administered questionnaire to reveal the question incident of contributing factors that lead to medication error. 2.2 Population and sampling Population is an entire group of people that is interested to the researcher as define by Brink (1996:132-133).Burns and Grove (2001:366,810) define population as the whole set of individuals who meet the sampling criteria. A sample taken from population and it will include in the study which representing research population, if random sampling procedures has been adhere to. Random sampling would give every individual in the whole population the same and unbiased chance of participating in the study. Simple random sampling will be used in this study. The respondents are consisting of Registered Nurses in Hospital Tengku Ampuan Rahimah, Klang (HTAR) .The sample will be taken randomly from several discipline in HTAR. In order to get significant result, a sample size calculation formula has been used to determine the size of the sample for this study. Inclusion criteria for respondents are: Registered Nurse with Malaysia Nursing Board Understand Malay and English language and generally healthy. Have working experience at least 1 year. The participants are involves in direct patient care. Have an experience in administering the medication Exclusion criteria area: Unregistered nurses with Malaysia Nursing Board Have working experience less than 1 year Do not have an experience in administering medication 2.3 Research setting The study setting will be conducted in HTAR. The unit chosen is medical ward, surgical ward, Intensive Care Unit, Obstetrics and gynecology ward, Pediatrics ward, Emergency Department and orthopedic ward. HTAR is chosen because affordable cost and time constrain for me. 2.4 Study period Data collection February to April 2011 Data Processing/ analysing and writing up April to May 2011 Grantt Chart (refer to appendix ) First phase Screening for initial data from hospital record (secondary Data) in Hospital Tengku Ampuan Rahimah Identify the discipline units to be study Second phase Pilot study done to confirm feasibility of the study Collection and analyzed the questionnaire Third phase Obtain consent from subject The data are collected by using questionnaire in order to obtain the information regarding the study Fourth phase Analyze the data collection and writing up 2.5 Data collection Dempsey and Dempsey (2000:195) define questionnaires is a paper and pencil data collection instrument filled in by the respondents for the purpose of the research study. Characteristics of questionnaires had been listed out by Gillham (2000: 5-8) as below: A questionnaire is less expensive than interview. A lot of sample can be taken within short period of time. Questionnaires can reduce cost of using telephone and travels thus it is also feasible to be used by researchers who have full time jobs. Questionnaires are an easy way to get more information within a limited period of time. Respondents able to complete the questionnaires at their own time without pressure. Anonymity can be guaranteed. Reassuring the respondents that no one will know any feedback from them. This aspect was deemed to be very important in this study as the respondents could be reassured that they could state their honest opinions about factors might contribute to medication error without fear that employer would take action to them if their knowledge level is low. The research contents will display out numbers, facts and figures .No names should be mentioned not even the researcher nor did the supervisor know who provided which answers for specific questions. No different questionnaires are distributed; all questionnaires are standardized to limit the bias. 2.5.1 Development of questionnaires The development of questionnaires was based on the literature review (Chapter 2) and other research instrument used in similar studies. The questionnaire is compiled and discussed by researcher and supervisor. Changes suggested were implemented. Most of the changing pertaining to rephrasing specific items so that each items had only issues to address rather than multiple issues. There is part of questionnaires that had been corrected and combined from previous study to ensure the objective of study answer. 2.5.2 Pilot Study Pilot study was done to determine feasibility of the instrument .This shows a trial administration of newly developed questionnaires in order to identify the potential -problem encountered by participant. Brink and Wood (1998:259; 373) explained that pre-testing enabled the researcher to interact with the participant similar but they were exclude from the real respondents participating in actual study. These ensure the researcher to predict what would happen to the main study regards to participation. Pilot study was conducted with five staff nurses with year of experience more than 1 at the same hospital but different target unit which they will not selected to participate in the actual study. No apparent problems were encountered during the completion of the questionnaires. 2.5.3 Structure of the questionnaires The questionnaire is conducted in Malay/English language and is assisted-administered questionnaire. The questionnaires will be distributed to the nurses in the unit by the researcher. The researcher needs to explain about the objectives, target population and significance of the study. Some of the respondents will answer the questions by themselves and some of them need assistance while answering the questionnaires. The data obtained will be statistically analyzed using SPSS software. An effective strategy for nurses will be formulated based on the findings. The questionnaire is distributed to the whole chosen unit consist of 30 registered nurses in HTAR. The questions based on a structured questionnaire that composed of three parts.(refer to the appendix) Part 1 that consists of demographic data : year of working experience Part 2 Question consists of six incident of contributing factors which potentially lead to medication error. Factor 1: This section using closed -ended question (dichotomous question) directed towards the knowledge regarding the process for medication administration. This questionnaire edited from study that had done by Raja Lexshimi R.G et al (2009). Factor 2-6: This section is questions regarding factors contribution to medication error edited from the result of study done by Fu et. al (2007) which categorized into five categories which using Likert scale. The respondents are asked to indicate how much the declarative statements given from each category will influence to contribute to medication error. Personal neglect Heavy workload Unfamiliarity with medication New staff Complicated order 2.6 Data Analysis To identify the level of knowledge among nurses towards serving medication .It is also to identify the most incident of contributing factors which lead to medication error. A significant value of 0.05 was used to test for significance for all statistical tests. The chi square analysis was performed to determine the association between incident of contributing factors and the years of experience. The data collected will be analyzed using Statistical Package for Social Science (SPSS) version 18. 0. 2.7 Research Variable Dependent Variable In this study, the dependent variable is years of experience Independent Variable In this study, the independent variables are the 6 incident of contributing factors ; Knowledge, Personal Neglect, Heavy Workload, Unfamiliar Medication, Newly staff and Complicated order. 2.8 Validity and Variable According to Polit and Hungler (1999:418), validity is the degree to which an instrument measures what it is designed to measure. The content of the questionnaire is adapted from the previous survey and study that had been done. Moreover the questionnaire used will be reviewed by a philosophy doctors (PhD). 2.9 Ethical consideration Permission from HTAR will be obtained from hospital authority to conduct this research. Each participants who involve in this study will be given inform consent. Furthermore, before distributing the questionnaire, each participant will be explained about the purpose of the study and consent form was given to the participants. They are free to agree or decline their participation in the study at any time. All information obtained from the participants will be kept confidential. The participants took 15 to 30 minutes to answer the questionnaire and the researcher collected it back after finished answering. Polit and Hungler (1999: 131-134) revealed that researcher therefore need to exercise care that the rights of individuals and institution are safeguarded. Administer medication is an everyday activity in nursing practice and nurses should have enough knowledge in order to perform this important job. The finding of these study shows that nurses knowledge in serving medication is sufficient. Most of the f=29 (96.7%) registered nurses able to answer the questionnaire correctly automatically make knowledge as low incident that will contribute to medication error. Reflected from the result, King (2004) and Coombs et al have similar result which reported the same. Nurses have the knowledge but the knowledge is limited especially on drugs administration. 43.3% did not know the frequent recommended site for heparin injections is at the abdomen (Caffrey, 2003).Nurses should improved their knowledge and highlight on different route of administer medication. Gerry Helen (2003) reported that time-span of experience and level of professional education was linked with level of knowledge in the administration of medications. Having extra educational qualifications among nurses were found to have contributed to a improved knowledge of medications. However in this study, 26.7% nurses practice wrongly which they did not check the patients ID band prior administering medication. It is also surprise 23.3% nurses violate the practice by administering medication prepared by other nurses. Benners and others (2002) agree source of errors include delivering too much medication, missed doses; wrong route; and wrong medication deliver due to misidentification of client. Mattan (1998) revealed that administering medicine effectively was a aspect of practice but it lacked quality, which is due to poor knowledge in pharmacology and practice. Manias et al. (2004) indicated that nurses infatuated the necessary knowledge and skills in medication administration such as monitoring effects of medication, assessing and evaluating patients condition prior to medication administration. In many cases drug errors arise as a result of nurses failure to follow policy (Keill and Johnson, 1993). 2) Personal Neglect From the data analyse, 18 (60%) nurses show personal neglect is in the low incident contribute to medication error. Nevertheless 4(13.3%) nurses indicate in the middle of administering drug, there was interruptions by others. A new study shows that interrupting nurses while theyre nursing to patients medication needs increases the likelihood of error. As the number of distractions increases, so do the number of errors and the risk to patient safety.    According to the study reported in the April 26, 2010 issues of the  Archives of Internal Medicine, four interruptions in the route of a single drug administration doubled the likelihood that the patient would experience a major mishap. 26.7% nurses indicate that personal neglect as a medium indicator of medication error. 3)

The Purpose of Education Essay -- Philosophy of Education Teaching Tea

The Purpose of Education As teachers endeavor into the field of education, it is imperative to ask exactly what the purpose of education is and why education has become one of the fundamental institutions of society. In examining this question, I realize that education serves as the basis for the organization of our culture, and essentially, the entire world and its influence is invaluable. I see four essential purposes of education: to foster thinking and reasoning skills in students, to create a sense of community, to develop life skills such as responsibility and cooperation, among others, and to provide a precursor for life’s continuous education. The most obvious purpose of education, and perhaps the one that many people view as the only purpose, is to instill in students a means of thinking. In our current education, this takes the form of several major subject areas, like math, science, history, and English, but these areas are constantly expanding to reflect our changing culture as students today are encouraged to expand their knowledges. But education goes beyond even providing subject information; it teaches students to think critically and rationally and to consider ideas— skills necessary in all life situations. The structure of education today, and throughout history, helps to provide a strong sense of community within society. Because students’ main access to other people outside their families is in school, thi...

Textile Dyes Biosorption Using Dead Fungal Biomass Environmental Sciences Essay

Over the past three decennaries or so the find and farther development of biosorption phenomena has gained impulse and has transformed the methods by the agencies of which waste H2O wastewater is treated to take pollutants and retrieve valuable resources present in these aqueous systems like dyes. Biosorption is going a promising alternate to replace or supplement the present dye remotion processes from fabric industries wastewater. This engineering has drawn the attending of industries as it is economically feasible and environmentally friendly. The position of scientific development of a engineering can be reflected through analyses of the literatures refering to it, in this reappraisal, we qualitatively examine about all facets of biosorption research through research articles and other reappraisal documents. We have fundamentally focused on biosorption of textile dyes utilizing dead fungous biomass obtained from autoclaved or inactivated Aspergillus Niger. Materials used, methodo logical analysiss used and informations obtained has been assimilated from literature cited below. Finally, we summarized the of import considerations of the current research on biosorption, the consequences and decisions obtained from the information, every bit good as the suggestions and our ideas and thoughts for its future waies. Introduction Rapid industrialisation and urbanisation all over the Earth has resulted in the coevals of big measures of aqueous wastewaters, many of which contain high degrees of toxic pollutants. Assorted physical, chemical and biological procedures are being employed to take pollutants from industrial effluents before discharge into the environment as in the instance of intervention of adsorbent pollutants like heavy metals and ionic dyes, nevertheless, most of the conventional intervention procedures, particularly chemical precipitation, curdling, activated Cs and the usage of ion-exchange rosins go less effectual and more expensive when the adsorbates are in a low concentration scope and their high cost and low efficiency and deficiency of practicality have limited their commercial usage in the field. Since any type of solid stuff has the capacity to absorb pollutants to some grade, a figure of industrial inorganic wastes, such as ash, or natural inorganic stuffs like clay, man-made stuffs, e very bit good as, populating or inanimate biomass/biomaterials, have been investigated as inexpensive adsorbents capable of replacing the well-known, but more expressive 1s as their cost is low and efficiency is higher and the biosorbants can be regenerated, and the possibility of dye recovery following surface assimilation biomass-based adsorbents or biosorbents as they are normally called, are the most attractive options to physical and chemical procedures. The usage of biosorbents for the remotion of toxic pollutants or for the recovery of valuable resources from aqueous waste Waterss is one of the most recent developments in environmental or bioresource engineering. Biosorption of dyes has become a popular environmentally driven research subject, and is one of the most sought after procedures in the modern twenty-four hours where bioremediation is cardinal in continuing the environment for future coevalss. Bohumil Volesky, a innovator in the field, defined ‘biosorption â⠂¬Ëœ as the belongings of certain biomolecules ( or types of biomass ) to adhere and concentrate selected ions or other molecules from aqueous solutions. Biosorption by dead biomass ( or by some molecules and/or their active groups ) is inactive and occurs chiefly due to the ‘affinity ‘ between the biosorbent and adsorbate. Types of Biomass or Biomaterials: Pollutants like metals and dyes can be removed by surface assimilation by populating micro-organisms, but can besides be removed by dead biomass. Surveies on practicality in the field for large-scale applications have demonstrated that biosorptive procedures utilizing dead biomass is much more feasible option than the procedures that use populating biomass, since the latter require a alimentary supply and complicated bioreactor systems. Plus the usage of dead biomass eliminates the care of a healthy microbic population, and the other environmental factors like temperature and pH of the solution being treated. Dye recovery is besides limited in life cells since these may be bound intracellularly. Therefore maintaining these factors in head, attending has been focused on the usage of dead biomass as biosorbents. As mentioned above, dead biomass has advantages over life micro-organisms. A intercrossed procedure can besides be employed which uses both de ad and living biomass so as to increase the efficiency of biosorption. However, we have chosen to concentrate on individual biosorption processes in this reappraisal and to avoid treatment of intercrossed procedures combined with biosorption. The first major challenge faced is to choose the most promising types of biomass from an highly big pool of readily available and cheap biomaterials. To streamline this when taking biomass, for on field or industrial utilizations, the chief factor to be taken into history is its handiness and bargain rate. Therefore maintaining these factors in head, native biomass can come from ( I ) industrial wastes free of charge ; ( two ) organisms easy gettable in big sums in nature ; and ( three ) organisms that can be grown rapidly and which can be cultivated easy. A wide scope of biomass types have been tested for their biosorptive capacities under assorted conditions at this point in clip, but there are no bounds to geographic expedition of new biomas s types holding low cost and high efficiency. Biosorptive capacities of assorted biomass types have been quantitatively compared in many reappraisal documents. Biosorbents chiefly fall into the undermentioned classs: bacteriums, Fungis, algae, industrial wastes, agricultural wastes, natural residues, and other biomaterials. Quantitative comparing of the 100s of biosorbents reported therefore far is non possible hence informations from assorted documents that have done these types of comparings of biosorptive capacities of assorted biosorbents for assorted pollutants were used. It should be noted that the biosorptive capacity of a certain type of biosorbent depends on its pretreatment methods, every bit good as, on experimental conditions like pH and temperature. When comparing biosorptive capacities of biosorbents we consider it for a mark pollutant, hence, the experimental informations should be carefully considered in visible radiation of these factors. After taking a signifier of inexpensive and abundant biomass, the biosorbent capableness for taking a mark pollutant can be derived through simple chemical and/or physical method ( s ) . New biosorbents can be manipulated for better efficiency and for multiple reuses to increase their economic attraction, compared with conventional adsorbents like ion-exchange rosins or activated Cs. Class Examples Bacterias Gram-positive bacteriums ( Bacillussp. Corynebacteriumsp. , etc ) Gram-negative bacteriums ( Es-cherichia sp. , Pseudomonas sp ) blue-green algae. Alga Micro-algae ( Clorella sp. , Chlamydomonas sp. , etc ) macro-algae ( green seaweed ( Enteromorpha sp. ) brown seaweed ( Sargassum sp. ) and ruddy seaweed ) Industrial Wastes Agitation wastes, food/beverage wastes, activated sludges, anaerobiotic sludges, etc. Fungus kingdoms Molds ( Aspergillus sp. , Rhizopus sp. Etc. ) mushrooms ( Agaricus sp. , Trichaptum sp. Etc. ) And Yeast. Agricultural Wastes Fruit/vegetable wastes, rice straws, wheat bran, soya bean hulls, etc. Natural residues Plant residues, sawdust, tree barks, weeds, etc. Others Chitosan-driven stuffs, cellulose-driven stuffs, etc. Table 1: Different type of biosorbents. Mechanisms of Pollutants Removal by Biosorbents: There are many types of biosorbents derived from bacteriums, Fungis, barms, and algae ( Table 1 ) . The complex construction of these implies that there are many ways, by which these biosorbents remove assorted pollutants, but these are yet to be to the full understood. Therefore, there are many chemical/functional groups that can pull and sequester pollutants, depending on the pick of biosorbent. These can dwell of amide, aminoalkane, carbonyl, carboxyl, hydroxyl, imine, iminazole, sulfonate, sulfhydryl, thioether, phenolic, phosphate, and phosphodiester groups. However, the presence of some functional groups does non vouch successful biosorption of pollutants, as steric, conformational, or other barriers may besides be present. The importance of any given group for biosorption of a certain pollutant by a certain biomass depends on assorted factors, including the figure of reactive sites in the biosorbent, handiness of the sites, chem ical province of the sites ( i.e. handiness ) , and affinity between the sites and the peculiar pollutant of involvement ( i.e. adhering strength ) . The apprehension of the mechanisms by which biosorbents take pollutants is really of import for the development of biosorption procedures for the concentration, remotion, and recovery of the pollutants from aqueous solutions, besides on the footing of these mechanisms alterations can be made on the biomass so as to increase the adsorption-desorption capacity of it. When the chemical or physiological reactions happening during biosorption are known, the rate, measure, and specificity of the pollutant consumption can be manipulated through the specification and control of procedure parametric quantities. Biosorption of metals or dyes occurs chiefly through interactions such as ion exchange, complexation, and surface assimilation by physical forces, precipitation and entrapment in interior infinites. Conventional diagram for treating different Biosorption mechanisms types of native biomass into biosorbents. Recovery and Regeneration: One of the of import grounds why biosorption is favoured over conventional procedures is due to the recovery of pollutant from the biosorbent and coincident regeneration of the biosorbent for reuse which makes it economically feasible for industries. In fact, the utility of a specific biomass as a biosorbent depends non merely on its biosorptive capacity, but besides on the easiness of its regeneration and reuse. However, most research workers have tended to concentrate merely on the biosorptive capacity of biosorbent tested, without consideration of the regeneration required for industrial applications. The adsorbate edge onto the surface of a biosorbent through metabolism-independent biosorption may be easy desorbed by simple non-destructive physical/chemical methods utilizing chemical eluants, but intracellularly bound adsorbate through metabolism-dependent bioaccumulation can be merely released by destructive methods like incineration or disintegration into strong acids or bases. If inexpensive biomass is used as a biosorbent for retrieving a certain pollutant, so destructive recovery would be economically executable. However, most attending to day of the month has focused on non-destructive desorption from the laden biosorbent. For this ground, the pick between life or dead biomass systems is of import because of the deduction for recovery. In many instances, dilute mineral acids or bases allow efficient desorption from the biosorbent, but they besides cause serious structural harm to the biosorbent itself, ensuing in a bead in the biosorptive capacity of the biosorbent following regeneration. Organic dissolvers such as ethyl alcohol can be besides used for desorbing organic pollutants such as dyes from the biosorbent. Sometimes heating or micro-cooking can help desorption with an eluant or mixture solution. As good, as antecedently mentioned, the solution pH will hold a strong influence on biosorption of a mark pollutant ; there fore, simple use of the pH of the desorbing solution should theoretically be a good method for regeneration of the biosorbent and recovery of the pollutant.FUNDAMENTAL REVIEWHow is the fabric wastewaters treated today? It is non easy to handle the wastewaters by the conventional biological and physico-chemical procedures, e.g. visible radiation, heat, wash and oxidising agents, used in regular intervention workss. That is because of the complexicity of the dyes aromatic molecular constructions. Adsorption is the most helpful physical procedure in the handling these dye waste Waterss. Today activated C is usually used for surface assimilation in many intervention workss. But the bring forthing costs for activated C is really high, there is a demand of an alternate stuff that is more cost capable. A low costs adsorbent is defined as one which is rich in nature or one that is produces as a by-product in another industry. There have been surveies on tonss of different natural stuffs as adsorbents in handling fabric wastewaters, for illustration proverb dust and agricultural wastes like wheat straw and maize hazelnut. Now biosorption is investigated as a method to absorb the wastewaters and different be ings handling different sorts of dyes are tested. Man-made dyes are widely used in fabric industries. As a consequence, about 10-20 % of the dyes are lost during the built-up and dyeing procedure, bring forthing big sums of dye-containing effluent. Largely dyes used are azo, anthraquinone and triphenylmethane dyes, categories is based on its chromophore.The white putrefaction Fungis are known to be really efficient for azo dye decolorization as assorted Aspergillus species, have been reported to bleach assorted dyes.Aspergillus NigerThe dye solution will be treated with inactivated Aspergillus Niger. A. Niger is a Fungi which has already been used industrially in bring forthing citric acid. Citric acid used to be produced by extraction from lemons and other citrous fruit fruits, but today microbic agitation is a loosely spread technique and about all citric acid is produced this manner. In these agitation industries A. Niger besides comes out as a waste merchandise which makes it suited for probes of the biosorption ability. A. Nige r is a dark colored Fungis ( see Figure a and B ) that could be seen at decomposing nutrient and is so called black cast. It is largely fruits and veggies that are affected by the cast, for illustration grape fruits, onions and peanuts. One should non bury when covering with the Fungi that it could do fungus diseases on both worlds and animate beings. Aspergillus Niger is a common saprophytic fungus in tellurian environments. If the cells of the Fungis are active they are easy affected by toxic compounds and chemicals in the waste H2O and they may so foul the environment by let go ofing toxins or propagules. Figure a: Aspergillus Niger turning Figure B: Onion with black cast on Czapek dox agar in a Petri dish.Dyes:On the whole a big many figure of dyes have been used by different research workers but it is non possible to show the information for all the dyes which were tested therefore in this reappraisal we have concentrated on a few dyes which are most normally used by the fabric industries. Direct Blue 199 Acid Blue 29 Basic Blue 9 Dispersed ruddy 1 Table 2: Different types of dyes. Culture Conditionss and Microorganism: Aspergillus niger pellets were used to obtain the paramorphic signifiers of A. oryzae. Pure civilization was maintained on alimentary beef agar medium at 4 & A ; deg ; C or were grown in potato-dextrose stock at pH 5.6, 29  ± 1 C on the shaker. After seven yearss, when monogenesis occurred, the biomass was autoclaved at 121 C, 103.42 kPa for 45 min in order to kill the fungous biomass ( figure degree Celsius ) . The biomass was separated by filtrating the growing medium through Whatman No. 1 paper after rinsing the fungous biomasses it will dried at 80 C for 20 h. The quantification of fungous biomass was carried out utilizing a additive standardization between volumes of fungous pelletized civilization and its several dry weight. The concentration found may hold suffered minor alterations, accordingly to the processs made during its paramorphogenesis. Figure degree Celsius: Biosorbent powderedBiosorption ExperimentsExperiments were conducted 30 milliliter of the dye solution at an orbital shaking of 120 cycles/min. The temperature and pH conditions were varied for the different experiments The estimative biomass ( autoclaved ) for entire remotion of the dyes were calculated at three different pH values ( 2.50 ; 4.50, and 6.50 ) After the choice of the better pH ( 2.50 ) , the dye solutions were equipped with the same dye concentration. Therefore, the solutions were inoculated with A. niger pellets ( mg mL?1 ) acquiring through different biomass concentration. Samples were withdrawn at specified interval of clip to supervise dye surface assimilation by UV-VIS ( Scanning was performed between 300 and 800 nanometer ) spectrophotometer at the optical density upper limit of the several dye.

The Importance of Criminal Justice - 1617 Words

The Use of Criminal Profiling Criminal Profiling is a method of identifying the perpetrator of a crime based on an analysis of the nature of the offense and the manner in which it was committed. It most notably can be traced back to work done in the later part of the last century, and possibly even earlier in a variety of forms. There has been a definite growth since this early work, with many individuals doing a great deal of both research and practical work in criminal profiling. The investigative technique has recently risen in popularity both in practical use and media portrayals. The first example of profiling available for reference which is referred to as a profile in the contemporary sense were the suggestion made by Dr.†¦show more content†¦This technique was portrayed in the movie The Silence of the Lambs (1991). This movie was actually done with the professional assistance of John E. Douglas and Robert K Ressler, two of the leading experts on criminal personality profiling and pioneers of mo dern criminal investigative analysis. Douglas and Ressler added the organized/disorganized method to the criminal profiling process. However, this work of fiction is not truly realistic in its portrayal of the serial murderers and their hunters; for instance, it combines attributes of several different sorts of offenders - personality dynamics that would be highly unlikely to coexist in one person in real life.(4) For 16 years, mad bomber George Metesky eluded New York City police. Metesky planted more than 30 small bombs around the city between 1940 and 1956, hitting movie theaters, phone booths and other public areas. In 1956, the frustrated investigators asked psychiatrist James Brussel, New York States assistant commissioner of mental hygiene, to study crime scene photos and notes from the bomber. 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