Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake

INTRODUCTIONAsasinkandaninnersourceofnutrients,sedimentsplayanimportantroleinlakeeutroph ication.TheeutrophicationstatusofWestLakeisstillcriticalinrecentyearsevenaftermostpollutionsourcesaroundWestLakehavebeencontrolled(Peietal.,1998) ,mainlythroughtherel…     

Reflective and integrative learning and the role of instructors and institutions—evidence from Malaysia

Higher Education - The shift in contemporary workplaces has caused higher education institutions to place importance on developing non-academic attributes along with academic success to help...     

Purification and Biochemical Characterization of D-hydantoinase and D-N-carbamoylase from Burkholderia cepecia, njut01

Hydantoinase and N-carbamoylase play important roles in the production of optically pure amino acids from racemic 5-monosubstituted hydantoins. In this report, hydantoinase and the N-carbamoylase from Burkholderia cepecia, njut01 were purified to homogeneity by chromatography (Pharmacia Explorer 100 system). The substrate specificity, enantioselectivity, pH dependence of activity and temperature stability of the activity were characterized. The results show that the hydantoinase and N-carbamoylase induced from Burkholderia cepecia, njut01 are both strict D-stereo selective enzymes. They both hydrolyze substrates with side chains containing aliphatic and aromatic residues with higher activity and affinity toward aromatic than aliphatic substituted substrates. The hydantoinase is a homotetramer with subtmit molecular weight near 52,000 and is active between pH 6.5 and 10 with an optimum near pH 9.0. The enzyme is active at temperatures up to 60~C, however, it appears instable at higher temperatures. The subunit molecular weight of N-carbamoylase is about 35KD. The N-carbamoylase is active in the pH range from 6.0 to 9.5. The optira-pH is 7.2 and the optinfizing bioconversion temperature of the N-carbamyolase is 52℃.     

A Contrastive Study of Chicken between Chinese and English from the Perspective of Metaphor

As a phenomenon of language, metaphor has profound cultural connotations. It is not merely a matter of language, but a mode of thought and an effective cognitive tool for human to perceive things. This paper focuses on HUMAN BEINGS ARE AMIMALS metaphor to elaborate, especially from the perspective of chicken.     

The problems of ‘competence’ and alternatives from the Scandinavian perspective of Bildung

The paper aims to show how competence as an educational concept for the 21^st century is struggling with theoretical problems for which the concept of Bildung in the European tradition can offer alternatives, and to discuss the possibility of developing a sustainable educational concept from the perspectives of competence and Bildung. The method of the study is conceptual analysis of ‘competence’ and Bildung. The paper concludes that (1) competence must be abandoned as an educational concept, as its problems cannot be solved due to the lack of a theory of educational content. With competence, the content aspect of education is obscured and hidden from public debate, and human autonomy is threatened. (2) Bildung can be revised as an educational concept by reinventing educational content as subject to interpretation and open debate by autonomous individuals on all levels from the transnational to the classroom. (3) A revised ‘mimetic’ concept of Bildung can prepare students for the knowledge society, as imagining is a type of higher order thinking essential for innovation and creativity. Instructional content in school is meaningful to students if they are able to imagine the representational object ‘as if’ it is both subject matter and real to them.     

The Meaning of “X": Study of Meaning from the Perspectives of Semantics and Pragmatics

ＩｎｈｉｓＰｒｉｎｃｉｐｌｅｓｏｆＰｒａｇｍａｔｉｃｓＬｅｅｃｈｕｓｅｓｔｗｏ ｑｕｅｓｔｉｏｎｓ :[1]Ｗｈａｔｄｏｅｓ“Ｘ”ｍｅａｎ ?[2 ]Ｗｈａｔｄｉｄｙｏｕｍｅａｎｂｙ“Ｘ” ?ｔｏｄｅ ｓｃｒｉｂｅｔｈｅｓｃｏｐｅｏｆｔｗｏｂｒａｎｃｈｅｓｏｆｌｉｎｇｕｉｓｔｉｃｓ :ｓｅｍａｎｔｉｃｓａｎｄｐｒａｇｍａｔｉｃｓ .① Ｔｈｉｓａｒｔｉｃｌｅｉｎｆａｃｔｇｒｏｗｓｏｕｔｏｆｔｈｅｔｗｏｑｕｅｓｔｉｏｎｓａｎｄｔｈｅｐｕｒｐｏｓｅｏｆｉｔｉｓｔｏｄｉｓｃｏｖｅｒｔｈｅｒｅｌａｔｉｏｎｓｈｉｐａｎｄｄｉ…     

Learners＇ and teachers＇ conceptions and dispositions of mathematics from a Middle Eastern perspective

The paper discusses an on-going research project that studies students＇ and teachers＇ conceptions and dispositions of mathematics. Conceptions are the views that students hold on a subject, and what they believe is required in learning and doing the subject. Dispositions are the beliefs or tendencies to exhibit a frequent, conscious and voluntary behavior directed towards learning a subject. The participants are high school students, higher education students and mathematics teachers. The study utilizes self-reporting tools as well as focus groups and interviews in a three-stage research model. This is a work on progress. Results to date are briefly discussed.     

Comparison of Teaching Approaches of the Subjunctive Mood—Comparison of Two Grammar Books from Home and Abroad

This study compared the different approaches of introducing the subjunctive mood in Advanced English Grammar and Grammar Dimensions in the hope that it will help ESL teachers to make choice of the proper ways of teaching the subjunctive mood,one of the most serious grammatical problems ever encountered by most ESL learners in China.Also,the main causes of the students’drawbacks in learning subjunctive mood are excavated and some feasible solutions in mastering this difficult item in English grammar are presented in this study.     

The First Olympic Gold Medallist of China from the Track and Field

Liu Xiang,a 21-year-old Chinese athlete,got the gold medal of the fascinating men's 110 mhurdles(跨栏)before a crowd of 70,000 at the Olympic Stadium in the 28th Olympics in Athens late Friday local time.He clocked an excellent 12.91 seconds to equal the world record set by Britain's Collin Jackson in 1993.Terrence Trammell of the United States,silver medallist at both the Sydney Olympics and last year's world championships,won the silver in 13.18.Anier Garcia of Cuba took the bronze in…     

A Study of Verbal Humor of Undergraduates from the Perspective of Co⁃operative Principle and Relevance Theory

Verbal humor has been widely studied from the perspective of the Cooperative Principle.The verbal humor of undergrad?uates,however,hasn’t been studied thoroughly.Corpus of verbal humor of undergraduates will be analyzed from the perspective of the Cooperative Principle and Relevance Theory.The analyses show that the pragmatic analysis of the verbal humor of the under?graduates can reveal humorous effects,which play an important role in their daily communication.     

Application of derivative ratio spectrophotometry for determination of β-carotene and astaxanthin from Phaffia rhodozyma extract

INTRODUCTION Carotenoids are a class of natural fat-solublepigments generally found in plants, algae, and pho-tosynthetic bacteria, where they play a critical role inthe photosynthetic process. Carotenoids also exist insome non-photo-synthetic bacteria, yeasts, and moldswhere they may carry out a protective functionagainst damages by light and oxygen. Although ani-mals can not synthesize carotenoids within theirbodies, they can intake carotenoids from their dietsleading to bright meat col…     

Die of与Die from

问:The boy was dying fast from a swordthrust.(那男孩因受剑伤快要死了。)(S.B.Z,P35)在此句中的介词from可不可以换成of? 答:一般说,因疾病、饥饿、年老、哀恸、失望等而死,用die of。例如:     

Mabel’s Love Pursuing and Acquiring from the Perspective of Politeness Theory

· The Horse Dealer’s Daughter gradually acquires her love in a tough and unbearable situation after a long dialogue with Doctor Fergusson. By analyzing the linguistic features between Doctor Fergusso...     

Students’ Self Assessment of Academic Attainment: accuracy and stability from 7 to 16 years and influence of domain and social comparison group 1

Pupils’ appraisals of their own ability have been found to be important in their school progress. This paper examines the accuracy and stability of academic self assessments from 7 to 16 years, and the effect of two factors on developments over time: domain/school subject (mathematics or reading/English) and social comparison group (general to children of the same age or specific to own class). Results come from a major longitudinal study of pupils in London schools. An overall lowering in self assessments from 7 to 16 years was accompanied from 11 years by greater accuracy. But systematic differences were found between domains; overall ability ratings were higher in reading/English, and there was more stability in ratings from 11 to 16 years. There was a marked drop in self assessments from the general to the own class social comparison group. But again there were domain differences: there was a greater drop at 11 and 16 years in reading/English.

     

Mabel’s Love Pursuing and Acquiring from the Perspective of Politeness Theory

The Horse Dealer’s Daughter gradually acquires her love in a tough and unbearable situation after a long dialogue with Doctor Fergusson.By analyzing the linguistic features between Doctor Fergusson and Mabel’dialogues from the perspective of politeness principle,one conception of which is that politeness is a social behavior in the contact of human beings,the strategies of Mabel’s love pursuing and acquiring are gradually revealed.     

‘A kind of exchange’: learning from art and design teaching

This paper analyses pedagogic practices in four fields in art and design higher education. Its purpose is to identify the characteristics that might be called signature pedagogies in these subjects and to identify their role in student centred learning. In a time of growing economic pressure on higher education and in the face of tendencies for normative practices brought about through mechanisms such as quality assurance procedures the authors seek to articulate and recognise the issues relating to spaces and pedagogies from this discipline that might be made to wider debates about learning in the sector.     

Inter-generational learning of teachers: what and how do teachers learn from older and younger colleagues?

This paper examines how and what teachers learn from their older and younger colleagues. Data were gathered from interviews and written reports from 27 Belgian and Finnish teachers. Thematic qualitative analysis was used. The results revealed differences in what teachers learn from older and younger colleagues. Teachers reported learning innovative teaching methods and ICT skills from younger colleagues, whereas practical information, classroom management skills, self-regulation and community building were learned mainly from older colleagues. Attitudes regarding teaching and different ways of being a teacher were learned from both younger and older colleagues alike. Similarities were also found in how teachers learned from their older and younger colleagues. Informal activities and relationships, different forms of mentoring, and working in subject teams or seminars were important sources of learning. An intergenerational learning perspective is important with respect to demographic changes in school staff and in preventing knowledge loss and teacher dropout.     

Differences of Phenomenological Reduction and Fusion of Horizons in Analyzing Literary Works——Analysis of Hawthorne's Young Goodman Brown from the Perspectives of Phenomenological Reduction and Fusion of Horizons

Edmund Husserl’s first important move about phenomenology is the“phenomenological reduction”which means that we should reduce the external world to the contents of our consciousness alone. However, Hans-Georg Gadamer holds the opinion that all interpretation of a past work consists in a dialogue between past and present(Eagleton, T. 2009:62). Gadamer’s famous theory is fusion of horizons which means that the event of understanding comes about when our own“horizon”of historical meanings and assumptions“fuses”with the“horizon”within which the work itself is placed. The present thesis takes Hawthorne’s YoungGoodmanBrown as an example to illustrate different understandings when readers apply the two different theories.