Wednesday, October 9, 2019
Workaholics Research Proposal Example | Topics and Well Written Essays - 250 words
Workaholics - Research Proposal Example The interest on the topic emerged from recognizing that current job responsibilities in various work endeavors tend to manifest increasing challenges that necessitate longer working hours than expected. As organizations have been continually besieged with economic and financial challenges, in conjunction with increasing competition, various strategies that aim to minimize cost from the workforce include requiring current personnel to do multi-tasking activities and assuming responsibilities of others. The current study therefore aims to determine the impact of adding responsibilities and work load on a limited pool of personnel in the long run. Miller, G. (2010, October 12). The U.S. is the Most Overworked Developed Nation in the World ââ¬â When do we Draw the Line? Retrieved from 20 Something Finance: http://20somethingfinance.com/american-hours-worked-productivity-vacation/ Rettner, R., & MyHealthNewsDaily. (2013, January 29). Overworked Doctors May Jeopardize Patient Safety. Retrieved from Scientific American:
Monday, October 7, 2019
Personal Development As a Strategic Leader and Strategic Performance Essay
Personal Development As a Strategic Leader and Strategic Performance management - Essay Example It is an exercise in helping me hone my skills, boost my strengths and improve on my weaknesses. In creating this Personal Development Plan as a Strategic Leader (PDP), I shall follow assessment criteria as my outline so I am ensured that nothing will be missed. The Department of Transportation (DoT) in Abu Dhabi upholds lofty ideals in professionalism. It honors its commitment to serving the people by providing quality service in terms of transportation. Its vision is as follows: Streamline the Department of Transport: More efficient delivery to the public sector the services and processes and provision of greater transparency and accountability to all stakeholders. This is made possible through five key policy divisions. Such divisions will be responsible for policy and strategic planning, regulation and relevant programs in Aviation, Maritime, Public Transport, Roads Safety and Highways Management. It is the Chairman of the Department of Transport, assisted by an Undersecretary, who oversees the regulation and supervision of transport conducted by these divisions. Two departmental functons have been created for purposes of assisting the Chairman, namely an integrated planning and performance management function and an internal audit capability. Expand Etihad Airlines and the Abu Dhabi International Airport: In an effort to expand its customer base and promote Abu Dhabi as a tourist destination, the DoT strategizes plans of increasing the number of destinations of Etihad Airlines, Abu Dhabiââ¬â¢s official air transportation to significantly more destinations by the year 2018. Apart from this, plans for the improvement of the Abu Dhabi Airport are under way. -The requirements of DoT for leaders seem to be call for mature individuals who can handle the multiple tasks embedded in the position with efficiency and deliver a high quality of input
Sunday, October 6, 2019
The history of coal in the 19th century Essay Example | Topics and Well Written Essays - 750 words
The history of coal in the 19th century - Essay Example The demand of coal was highly increased. It was admitted that in 1700 year coal production stand for the ââ¬Å"2.7 million tonnesâ⬠while in 1800 year that number corresponded to the ââ¬Å"10 million tonnesâ⬠(HistoryLearningSite, 2014). Moreover, till the end of nineteenths century of coal mining increased extremely high. The statistic data showed that in 1900 year coal production enlarged toââ¬Å"250 million tonnesâ⬠(HistoryLearningSite, 2014). Such increase of coal production happened due to the number of different reasons that are highly essential. First and foremost, it could be mentioned that the industrial revolution led to the urbanization and increasing of population. It was more comfortable to use coal as a fuel than to use wood or charcoal, as the city dwellers have no opportunity to live near the forest and provide wood as a fuel (Wilde, 2015). Moreover, it was a few times cheaper; therefore, it was popular among the city dwellers. Coal industry played a significant role in the production of other things and issues in that period. For example, it was admitted that ââ¬Å"after 1800 towns began to be lit by coal powered gas lampsâ⬠(Wilde, 2015). It was relevant to admit that people used coal for the lightening their houses and flats. Moreover, this material provided a helping hand in the development of small and huge industries in Europe (Wilde, 2015). Each factory had used coal as a fuel because of its practice and price. As it was admitted coal was used as a fuel ââ¬Å"from iron production to simply bakeriesâ⬠(Wilde, 2015). In addition, nineteenth century was marked by the expansion of borders between countries. People constructed channels that made the market of coal production wider (Wilde, 2015). That functioned through the trains and railways. It was worse to admit that they also were in need for coal as a fuel (Wilde, 2015). It was relevant
Saturday, October 5, 2019
Global Trends in Crime Research Paper Example | Topics and Well Written Essays - 2750 words
Global Trends in Crime - Research Paper Example These crimes have more or less infiltrated all corners of the globe, making the apprehension and prosecution process difficult and complicated to carry out. This paper shall discuss the current global trends in crimes, paying particular attention to the infiltration and increased rates of internet crimes and the remedies which have been set forth by the different governments of the world. This paper is being carried out with the hope of establishing a clear and comprehensive discussion of the subject matter and its impact on the governments and the general population. Discussion With the advent of information and communication advancements, the geographical borders of countries have become virtually penetrable (Rosenau, 1995). The porosity of our borders as well as the anonymity of transactions in the internet has created opportunities for criminals and violent groups, as well as for terrorist groups to expand their operations in the international scene. Government-supported cyber-te rrorism groups in some regions and hackers have strengthened their skills further in the digital world (Comite Europeââ¬â¢en Des Assurance, 2004). With the coordinated processes between organized crimes and the digital world, the general security of the global landscape has been made vulnerable (Williams, 2001). The Federal Bureau of Investigation sets forth that cyber criminals have launched attacks on many Fortune 500 corporations. In fact, based on reports by the International Data Corporation, about 39% of Fortune 500 companies have been attacked in the digital world via security breaches. Hackers have also been known to attack the Pentagon, the White House, and NATO (Lunev, 2001). Attacks on Microsoft have also led to the theft of their secret source codes; and credit card numbers from various banks have also been accessed illegally by these hackers. About 20 years ago, terrorist activities had to be carried out with much bloodshed and physical contact among combatants, and now, the digital world has made it possible to achieve the same ends of terrorism without the necessity of physical contact among combatants (Verton, 2002). Consequently, terrorism has become an even more dangerous practice and the FBI and other law enforcement authorities have recognized the dangers it poses to the general population. Through the rapid digitization of businesses and other political and social establishments, thieves and other criminals have also gone digital with the manner of their commission of crimes (Carblanc and Moers, 2003). These organizations and corporations have been prompted by these attacks to worry and protect the security of their digital networks. But these crimes seem to evolve as the digital technologies are also evolving. Some of these crimes shall be discussed in this paper. Cyber crimes or cyber attacks are simply defined as crimes which are carried out with the use of a computer network (Kshetri, 2005). In general, cyber crimes include critical infrastructure attack, fraud, online money laundering, criminal uses of Internet communications, identity fraud, use of computers to carry out traditional crimes and cyber extortions (Kshetri, 2005). Other cyber crimes include cyber-stalking and cyber bullying. Other cyber crimes are traditional crimes which are carried out with the use of computer networks. Some of these crimes shall be discussed below. One of the current concerns in the world of crime is the fact that it has become even more difficult to estimate the
Friday, October 4, 2019
Final projec Essay Example | Topics and Well Written Essays - 750 words
Final projec - Essay Example For one to achieve a good structured material he has to ensure all the rules are followed. Improper utilization of commas in writing is common mistake students tend to make in writing. When using a comma, one should ensure that the sentence he is writing remains within the fringes of sense and meaning. Wrong application of comma in a sentence alters the meaning that the writer intended and results to bad material. One realization is that too many commas in a sentence may be distracting, and too few commas may result to text that is hard to comprehend. A mistake that has been noticed in student writing is use of articles: is, are, was and were. These articles are used in sentences as a way of referring to the number or amount of things or subjects being referred to. The rule of these articles in writing sometimes are confusing, this is majorly in the sentences that there are two or more subjects in one sentence. The confusion then ensues when a verb is added in this sentence and the r eference of the verb to a particular subject is mixed up. A sentence like ââ¬Ëfor most things in life that you learn how to do are from observingââ¬â¢ is a good example of this situation. There two subjects which are ââ¬Ëyouââ¬â¢ and ââ¬Ëthingsââ¬â¢ where as the verb is ââ¬Ëobservingââ¬â¢. ... Structuring mistakes are commonly associated to using several tenses in one sentence hence confusing the reader. A proper structure ensures proper flow of material which then becomes easily comprehended by readers. A sentence should have enough points to create meaning and sense to the reader, this ensures that there are connectors of the work from the start to the end of the material. Clarity goes together with proper structuring. In a good written material, the writer should ensure that the points of his work are brought out in such a way as to give the reader an easy time toward understanding the material. Clarity should flow from the beginning of the written materials to the end; this ensures that the reader gets to understand the reasoning and the basis of the whole material in relation to the thesis structure. In writing one should ensure that he understands what material he writes is intended to, this is to ensure relevance. The use of informal words in a material can result n egatively in an essay context whereby the markings are to be made using proper English elements. Using of informal material is however not recommended since some of the words tend to stick and avoiding them becomes tough. Formal language has several advantages over informal language; this is in relation to addressing a wider audience. When a writer uses a word like bro, this only relates to a particular people and not advisable. Formal language in writing ensures that one stays within the rules of English since most of them comply with most of the writing rules. In writing there are stylistic devises that are meant to bring out auxiliary meanings to literal material. Improper use of stylistic devises; using the in places
Thursday, October 3, 2019
Different Views on Ethical Perspectives Essay Example for Free
Different Views on Ethical Perspectives Essay We, as human beings are more often aware of our actions. Before we make decisions critical analysis comes with a great consideration. We are able to analyze these things because are considered as rational beings and we have the ability to think to the highest level we can. We opt to consider whether these things are good or not, if itââ¬â¢s right or wrong and if itââ¬â¢s really needed or not; this we often consider as ethics. Ethics is an issue of morality. There are things that we do that others consider wrong, but others may consider righteous. According to the society we should act as what it considers right; norms are one of the foundations of ethics and we should act accordingly. Norms can be a basis of what is morally right or wrong. There are four perspectives to be discussed in this paper, each of them having their own characteristics and each of them having their strong points and their weaknesses. The perspectives are universally known as the character or virtue, deontology or the perspective of obligation, the theory of utilitarianism and the equity or principle of relativism. The theory of utilitarianism points out two things; one thing is better than the other if we could gain more pleasure from it, and the other thing is not that good, or better yet to say evil, if we could only gain pain from it. This theory also states that we do things voluntarily, that one is considered as the pilot of his own decisions and that such consequences could have not taken place if only he did or did not do such actions. The amount or quantity of pleasure or pain takes into a great consideration in the concept of utilitarianism. Utilitarianism is better understood as having the maximization quantity of benefit and less quantity of bad or the pain it can cause. A person would have two distinct choices, the first one is that if he does the action he would gain more pleasure or shall I say he can maximize the benefits of the action; the other is that if he does the action he would have to gain more risks and consequences. The first choice would be most favored because we, as human beings would not want to suffer from the choices we make, we do not want to be suffering from the consequences of our actions so what we do is do the thing that would give us the most favorable and maximum quantity of pleasure (Moore, 1912). Virtue is an ethical perspective that tackles about the actions that we make and the ideals we have in life that we should strive for and that these ideals help us in developing our highest potentials as human beings. This focuses on the traits or character that one has, the dispositions in life and the attitudes whether be it bad or good. Virtues are acquired through doing it everyday, they become a personââ¬â¢s characteristic when they are practiced for the longer time. There are a lot of characteristics and virtues a person can have; truthfulness, patience, honesty, and courteous are some of these. Virtue would help us in pursuing the ideals that we have in life (C. A. Manuel Velasquez, Thomas Shanks, S. J. , and Michael J. Meyer 1996). The theory of ethical relativism states that morality is based on the culture of a society. It singles out that one can either be wrong or right, bad or evil depending on the society the person belongs to; the society is the one concerned in creating its own culture. This theory is basically called relativism because being good or bad is relative of the kind of society a person belongs to; the society dictates whatever thing is perceived as good or bad. Every single society shares a common culture, this culture defines good and bad and the people should act with accordance to the standards of the society they belong. This theory is often argued because of the fact that every single society has its own culture and therefore has its own perception of bad or good. However, this theory is useful in exploring the reasons behind the differentiation of culture among societies (C. A. Manuel Velasquez, Thomas Shanks, S. J. , and Michael J. Meyer, 1992). Obligation perspective holds the golden rule ââ¬Å"do not do unto others what you donââ¬â¢t want others do unto youâ⬠. It simply states that we should do what is only right and not what is wrong. It holds the principle of doing what is good because of the obligation. Say for example, a person should tell the truth because that person is bound to have an obligation to tell the truth because he doesnââ¬â¢t want other people not to trust him and because he upholds the value of truthfulness. This perspective is sometimes being pertained to utilitarianism, but it is totally different. While obligation is obligatory, utilitarianism is a voluntary act. After taking the ethical awareness test, I have known that what ethic perspective dominates in me is the obligation or the deontology. My perspective is based on my obligation or duty to do what is morally right. With this, I am to consider a thing as ethical if I choose how I act and what rules I am willing to oblige. It is also stated in my ethical perspective that the people should not be treated as a means to justify an end, simply stating ââ¬Å"the end does not justify the meansâ⬠. I also believe that every single individual should be given the respect that any man should have and therefore I wonââ¬â¢t be able to comply with the policies and social traditions aimed at the best interest of the society as a whole. However, my approach to ethics requires legal and humane limits, I simply believe that people should be allowed to make their own choices and I advocate policies that have the intention to ensure equal opportunities for all as well as equal respect. My ethical perspective upholds the principle of doing things in accordance with the standards of right and wrong. However, though my ethical perspective aims to do what is morally right I am faced with numbers of dilemmas with regards to work. These problems would somehow cause me frustrations and may lead to a more devastated life in the future for it is not only concerned in the present but it also pertains to the future. One of the problems I am going to face with this perspective is that the people I work with might argue that some people within a society are not able to act in their own best interests. I may find this a fallacy because it was once used in the denying of the equitable treatment to women and the minorities. This somehow would result to frustration. The second problem I am to face with this perspective is that what I perceived to be morally right may not benefit most of the people. It doesnââ¬â¢t necessarily mean that if I have perceived a thing to be morally right it would maximize the good or pleasure. This would cause me another frustration because if I had made a decision which I perceived to be right and it didnââ¬â¢t work to be beneficial I may have doubts when I make a decision again. It might cause greater problems in the future. Another dilemma I am to face with this perspective is that defending this may end up in economic hardship; in worst cases I can be terminated. Say for example, in a working place several employees should be terminated because the company is having low production because these people are handicapped or they are simply not productive, the best action would be to terminate them but I, as a moralist would say that they should not be terminated because they have children. In the long run, if these people would be in the company and the company has still a low productivity the company would have losses and it may lead to closure because of the losses. Having things perceived as morally right may not be totally right; some may be beneficial but some can create more problems. We as human beings should act accordingly to whatever it is that we perceive because these choices are free of charge, because God created us with the opportunity of having what we call free will and should be practiced. We should not depend on what others may in making our decisions but we should also be ready for the consequences that accompany our decisions. Whatever action we do we should think of it twice, we should think that there are always two sides of a story. We should not be bounded by obligations because this might cause us greater frustrations in the future and this may lead to a very low self-esteem. We donââ¬â¢t want these to happen thatââ¬â¢s why we should think critically and make decisions wisely because we are the pilot of our own lives.
M.bovis Genetic Diversity
M.bovis Genetic Diversity Mycoplasmabovis pneumonia is an epidemic worldwide. To understand M.bovis genetic diversity would help develop novel measures to control this disease. Therefore this study was aimed to determine genotype distribution of Chinese strains and the potential global evolution. Firstly three available methods including two M. bovis multilocus sequence typing (MLST) schemes MLST-1 and MLST-2 and pulsed field gel electrophoresis (PFGE) were comparatively used for 44 Chinese strains and M. bovis type strain PG45 originated fromUSA. The results showed a high genetic homogeneity of Chinese isolates. By MLST-1, 43 of 44 (97.7%) Chinese isolate being ST-10, while 1 of 44 ST-34. The MLST-2 scheme clustered 44 Chinese isolates into two sequence types, ST-10 43 of 44 (97.7%) and 1 of 44 ST-32. PFGE clustered 42 of 44 (95.5%) into PT-I. The discrimination index was highest for PFGE (D = 0.160), while both MLST schemes have similar discrimination power (D = 0.110). The agreement rate among three typing methods is 95.4%à ¯Ã ¼Ãâ 95% CIà ¯Ã ¼Ã
¡84.2%, 99.4%à ¯Ã ¼Ã¢â¬ °. The type strain PG45 gave a unique type by all three methods. Additionally, MLST-2 scheme was used to analyze 8 Australia and 8 Israeli isolates. The results showed 8 Israeli strains represent three STs with ST-10 as the most dominant type comprising 50% of the strains, ST-20 (n=2) and ST-28 (n=2). The 8 Australian isolates showed two sequence types ST-10 (n=7) and another sequence type ST-41 (n=1) identified firstly here. The assay of evolutionary relationship by geoBURST Minimum spanning tree (MST) of 60 isolates typed in this study and 207 isolates of 11 countries from the MLST-2 database. It was revealed that similar dominant clone (ST-10 in CC 3) exists in China, Israel, Australia and United States. This may be related to global livestock movements. In conclusion, we firstly demonstrated the remarkable clonality of M. bovis in China and the dominant ST-10 might originate from a common global source. Key words: Mycoplasma bovis; molecular epidemiology; multilocus sequence typing (MLST); pulsed field gel electrophoresis (PFGE); cattle; evolution. Mycoplasma bovis (M.bovis) is the main causative pathogen of bovine mycoplasmosis worldwide such as in North America, Europe (Nicholas and Ayling, 2003), China (Shi et al., 2008), Australia (Morton et al., 2014) and Israel (Lysnyansky et al., 2016). It results in substantial economic losses to producers by causing M.bovispneumonia and mastitis in beef and dairy cattle. M. bovis was first isolated in 1961 in USA from cattle mastitis milk (Hale et al 1962) and has long been considered a player in bovine respiratory diseases (BRD) since 1976 (Thomas et al., 1986). It then appears to have spread via animal movements to, amongst many countries (Nicholas 2002). Today, infection occurs in most European countries and throughout the world. It was estimated that the economic loss caused by M.bovisin United States was up to $108 million per year. In Europe, M.bovis pneumonia constitutes about 30% of calf respiratory diseases (Nicolas and Ayling, 2003; Maunsell et al., 2011). As the prevalence o f M. bovis associated diseases varies widely across the world, there are important trade implications and a pressing need to monitor cattle for M. bovis. However, to date, there are large gaps in our understanding evolutionary relationships of this pathogen isolates between different countries and globally. In China the first M. bovis mastitis was described in 1983 (Chen et al., 1983) and first M. bovis pneumonia in 2008. Since then reports of M. bovis pneumonia and mastitis outbreaks have been frequently described (Shi et al., 2008; Peng et al., 2011). M. bovis pneumonia is characterized by severe respiratory distress, high fever and at postmortem lung lesions including carnification, extensive caseo-necrotic or suppurative foci in the lungs. M.bovis pneumonia caused over 80% morbidity and between 10% to 60% mortality in calves and stockers newly introduced into beef feedlots (Shi et al., 2008). A major contributing factor to this disease is the stress caused by the long distance transportation of calves and stockers between the feedlots and farms (Shi et al., 2008). The disease is difficult to control with chemotherapy, and vaccination would be an ideal alternative approach. An insight of the genetic diversity and population structure of M. bovis would assist in the development of novel vaccines, as well as gaining an insight into evolutionary trends. A variety of molecular typing methods have been used for epidemiological characterization of M. bovis strains including random amplified polymorphic DNA (RAPD) analysis (Butler et al., 2001), amplified fragment length polymorphism (AFLP) analysis (Kusiluka et al., 2000; Soehnlen et al., 2012), pulsed field gel electrophoresis (PFGE) (Pinho et al., 2012; Arcangioli et al., 2012), insertion sequence (IS) typing (Miles et al., 2005; Aebi et al., 2012) and multilocus variable number tandem repeats (VNTR) analysis (Pinho et al., 2012; Spergser et al., 2013). In addition, three multi-locus sequence typing (MLST) schemes were recently developed to study population structure, evolution and spread of this pathogen (Manso-Silvan et al., 2012;Register et al., 2015; Rosales et al., 2015). The MLST scheme developed by Manso-Silvan et al. (2012) is based on four housekeeping genes fusA, gyrB, lepAand rpoB and showed a discrimination index of 0.833, while improved MLST scheme have been developed by Rosales et al.2015) here after referred as MLST-1 scheme; and by Register et al. (2015) here after referred as MLST-2 scheme. Both schemes use seven housekeeping genes but they only have one gene in common and therefore theire discrimination power higher than the Manso-Silvan scheme. In the present study, it was aimed to firstly evaluate the three methods MLST-1 and MLST-2 schemes and conventional PFGE by comparing the results in typing 44 Chinese M.bovis isolates, secondly assess the genetic diversity and population structure of M. bovis strains isolated in period of 2007 2014 by using the type strain PG45 as the control., and thirdly explore the evolutionary relationship of Chinese M.bovis isolates with globally diverse isolates. Material and Methods Mycoplasma bovis isolates M. bovis Chinese isolates (n=44) were obtained during 2008 to 2014 from nine Chinese provinces: Hubei (n=25), Anhui (n=1), Fujian (n=2), Hunan (n=1), Jiangxi (n=3), Henan (n=8), Inner Mongolia (n=1), Guangzhou (n= 2) and Shandong (n=1). These M. bovis isolates were mostly from lungs in cases of pneumonia (n=41); together with other sources such as milk with mastitis (n=2); throat swab in case of pneumonia (n=1) and fluid of joint with arthritis (n=1). The M. bovis type strain PG45 was purchased from American Type Culture Collection (ATCC 25523) and also used in this study. DNA samples from 8 Israeli M. bovis isolates were kindly offered by Prof. Dr. Inna Lysnyansky from Kimron Veterinary Institute, Israel, collected during 2013-2014 from pneumonia (n=6), stillbirth (n=1) and arthritis (n =1) in seven regions namely Gilboa (n=1), Beer Tuvia (n=3), Hevel Eilot (n=1), Eshkol (n=1), Jerusalem (n=1), Mateh Yehuda (n=1) and EmekYizrael (n=1). In addition, eight whole genome sequences of Australian M.bovis isolates were retrieved from GenBank representing mastitis, (n=4), lungs (n=1), nose swab (n=1), joint fluid (n=1) and semen culture (n=1) in five regions namely New south Wales (n=2), Queensland (n=1), Tasmania (n=3), South Australia (n=1) and Victoria (n=1) with accession no. SAMN05444185, SAMN05444199, SAMN05444228, SAMN05444239, SAMN05444243, SAMN05444247, SAMN05444250, SAMN05444261) included in this study (Table 1). Growth conditions, species identification and DNA extraction M.bovis isolates were confirmed by species-specific PCR as previously described (Subramaniam et al., 1998). The M.bovis samples were grown in PPLO broth (Difco) supplemented with 0.5% (w/v) sodium pyruvate (Biosharp, China), 0.09% (w/v) yeast extract (BD Biosciences, San Jose, CA, USA)à ¯Ã ¼Ã
â0.004% (w/v) phenol red, 1% (v/v) 10- minimum essential medium (MEM) (Sigma-Aldrich, Saint Louis, MO, USA), 20% (v/v) Hyclone donor horse serum (Invitrogen, Carlsbad, CA, USA) and penicillin G 80,000 IU/100 mL and the final pH was adjusted to 7.6(Khan et al., 2016). DNA from each isolate was extracted using the genomic DNA extraction kit (Tiangen, Beijing, China). Multilocus sequence typing (MLST) MLST-1 scheme is based on a partial sequencing of dnaA, metS, recA, tufA, atpA, rpoD and tkt genes (Rosales et al., 2015); For MLST-1 scheme, 44 Chinese isolates and American type strain PG45. The PCR amplification conditions for MLST-1 were used as previously described (Rosales et al., 2015); after amplification, PCR products were further purified and sequenced using PCR Products Extraction Kit (Magnetic Beads) (Enriching Biotechnology, LTD, Wuhan, China) and sequenced. Sequencing reactions were performed by the commercial company (Tianyi Hui Yuan Biological Technology Pvt. Ltd. Wuhan, China).The quality of chromatograms was checked visually and sequence data were assembled and edited using SeqMan software (DNASTAR Inc., Wisconsin, USA). The assembled MLST-1 sequences were compared using non-redundant database (NRDB) comparison tool available in http://pubmlst.org/analysis/ with our previously analyzed 10 strains used as a control to assign allele and Sequence type number (Rosales e t al., 2015). MLST-2 scheme is based on a partial sequencing of adh-1, gltX, gpsA, gyrB, pta-2, tdk and tkt (Register et al., 2015). For MLST-2 scheme, the 44 Chinese strain and PG45 were subjected to PCR, and PCR products were sequenced as above mentioned method. The assembled sequences of all isolates were uploaded to http://pubmlst.org/mbovis/database to identify allele numbers and sequence types (STs). In addition, for the evolutionary assay, 8 Israel strains were typed with the method as described above. Meanwhile, 8 Australian isolates whole genome were annotated using prokka 1.11rapid prokaryotic genome annotation software (Seemann; 2014) at http://www.vicbioinformatics.com. Each locus sequence was extracted from the annotated genome. Pulsed Field Gel Electrophoresis (PFGE) analysis PFGE of 44 Chinese M.bovis field strains and type strain PG45 was performed as previously described (McAuliffe et al., 2004, Arcangioli et al., 2012) with some modifications for agarose block preparation. Briefly, macro-restriction analysis was performed with the restriction enzyme SmaI as follows: Each M.bovis isolate 15 ml culture aliquot was centrifuged at 15000 à ¯Ã¢â¬Å¡Ã ´g for 20 min at 40C, the pellet was washed three times with Tris-EDTA buffer and resuspended in 400 à ¯Ã à l of cold Tris-EDTA buffer (pH 8.0). Agarose plugs were prepared from a 1:1 mixture of the above cell suspension and 2% low-melting-boiling agarose (Bio-Rad). They were then incubated in a lysis buffer containing 10mM Tris-HCl, 1 mM EDTA, 1% lauroyl sarcosine, 1mg of proteinase K per ml for 48 h at 560C. These plugs were washed for 6h with several changes of Tris-EDTA buffer at 40C. The plugs were then cut aseptically into 2 mm sections and equilibrated in 120 à ¯Ã à l restriction buffer (Prom ega) for 30 min at 40C. Subsequently, plugs were digested with 30U of SmaI (Promega, Shanghai, China) at 240C for 4 h. After digestion loaded in 1% pulsed-field-certified agarose gel (Bio-Rad), and run in a CHEF-DRIII system (Bio-Rad) at 6V/cm, in 0.5à ¯Ã¢â¬Å¡Ã ´ TBE buffer at 140C, at 6V/cm with angle of 1200. The initial pulse time was 5s, with a final pulse time of 40s with a running time of 24 h. The lambda DNA ladder PFGE marker (Bio-Rad) was used as a reference. PFGE fragments in the gel were stained with ethidium bromide (EB) (1mg/ml) for 20 min, and destained in distilled water for 1.5 h and visualized under UV transilluminator. Pulsotypes (PT) were assigned numbers consecutively based on differences of more than one band in PFGE patterns upon visual inspection. The banding patterns were analyzed using Dice coefficients with 1% band position tolerance. The clustering of patterns was performed using unweighted pair group matching algorithm (UPGMA) as previously described ( Arcangioliet al., 2012; Timsit et al., 2012). Allelic sequence variance analysis The Sequence Type Analysis and Recombinational Test Version 2 (START2) (Jolley et al., 2001) were used to analyze polymorphic sites, construct UPGM dendrograms and calculate non-synonymous to synonymous ratios (dN/dS). Genetic diversity (H) of each locus and Index of Association (IA) were calculated by using LIAN 3.5 (Haubold and Hudson, 2000) hosted on http://guanine.evolbio.mpg.de/cgi-bin/lian/lian.cgi.pl/query. Global evolution and minimum spanning tree (MST) analysis The evolutionary relationship between isolates and M.bovis population structure was determined using PHYLOViZ (Fransciso et al., 2012) and evaluated by minimum spanning tree (MST) created using eBURST (geoBURST) algorithm (Francisco et al., 2009). MST for MLST-2 was performed for 257 isolates from 11 countries including 60 strains (44 China, 8 Israeli and 8 Australia isolates)à typed in this study and 207 isolatesà retrieved January, 2017 (Supplementary Table 3) from the M.bovis MLST-2 database www.pubmlst.org/mbovis. Statistical analysis The discriminatory ability of both MLST methods and PFGE was calculated using Simpsons index of diversity as previously described (Hunter and Gaston, 1998). Congruence between both typing techniques was measured using the adjusted Rand Coefficient and Wallace Coefficient (Severiano et al., 2011). All statistical analyses were performed using the freely available online tool (http://darwin.phyloviz.net/ComparingPartitions/) Results The comparison of M.bovis typing with three methods MLST-1 analysis A total of 44, out of 10 were previously typed (Rosales et al., 2015) were also used for control and typed by MLST-1. The mean GC contents of seven gene fragments ranged from 29.15% (dnaA) to 37.23% (tufA) while it was 37.4 % in the whole M. bovis HB0801 genome (Qi et al., 2012). For each of seven loci, allelic variation was analyzed including polymorphic sites, guanine-cytosine(GC) content, synonymous and non-synonymousratios (dN/dS)(Table 2).The number of polymorphic sites per locus ranged from 4 (6.2%) in recA to 19 (29.6 %) in dnaA, and a total of 64 polymorphic sites for all seven genes were identified. The number of alleles observed ranged from 2 (metS, recA, tufA, atpA, and tkt) to 3 (dnaA and rpoD). The genetic diversity (H) for each locus was 0.0879 for dnaA and 0.0444 for metS, recA, tufa atpA and tkt. The dN and dS substitutions ranged from 0.0000 to 0.0623. In summary, all 44 Chinese M.bovis isolates typed by MLST-1 were divided into two STs namely ST-10 and ST-34 (Table 1).The ST-10 (with allelic profile of 2,6,2,2,2,5,3) was most numerically dominant, comprising 97.7%à ¯Ã ¼Ãâ 43/44à ¯Ã ¼Ã¢â¬ °of Chinese M.bovis isolates including the Chinese strain HB0801 (Fig.1). In addition, ST-34 (allelic profile of 11,6,2,2,2,5,3) contains only one strain SZ; while ST-1(allelic profile of 1,1,1,1,1,1,1) represented by strain PG45 was identified (Table 1). Genetic relatedness amongst the 44 Chinese M.bovis strains showed two clades A and B. Clade A contained the majority (97.7%) of isolates (43/44) including the Chinese strain HB0801, while clade B contained one Chinese strain SZ (ST-34). M.bovis PG45 type strain was an outlier of these two clades (Fig.1). The geoBURST and MST analysis clustered 44 Chinese in the clonal complex CC2, whereas reference strain PG45 (ST-1) in CC1 (Table 1) as previously described (Rosales et al., 2015) MLST-2 analysis All 44 M.bovis isolates were examined by MLST-2. The mean GC contents of seven gene fragments ranged from 28.76% (tdk) to 35.61% (gyrB).The number of polymorphic sites per locus ranged from 8 in gyrB (8.66%) to 22(23.91%) in gpsA and a total of 92 polymorphic sites were identified (Table 2). The numbers of alleles identified were 2 for adh-1, gpsA, gyrB, pta2 and tkt and, 3 for gltX. The genetic diversity obtained 0.328 for adh-1 to 0.962 for gpsA (Table 2). à The Chinese strains were distributed into two different sequence types. ST-10 with allelic profile 4,3,3,3,5,3,4 was the most numerically dominant type, comprising 97.7% (43/44) of Chinese isolates; and ST-32 had only one isolate, SZ respectively. All M.bovis isolates tested in this study were clustered into two major clades A and B based on genetic relatedness by UPGMA. Clade A was comprised of 97.7% (43/44) of Chinese isolates including the Chinese strain HB0801. Whereas Clade-B contains one Chinese isolate. Same as above, M.bovis PG45 type strain was an outlier of these two clades (Fig. 2) PFGE typing The 44 Chinese M.bovis strains, and type strain PG45 were subjected to PFGE following the use of restriction enzyme SmaI. All isolates were typeable and the banding profile of the isolates ranged from 6 to 10 bands (from
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