scholarly journals LEXICAL BUNDLES AND MOVES IN RESEARCH ARTICLE ABSTRACTS OF DIFFERENT DISCIPLINES

2020 ◽  
pp. 71
Author(s):  
Purificacion Sánchez Hernández
Keyword(s):  
Academic Writing ◽  
Structure And Function ◽  
Lexical Bundles ◽  
Writing Courses ◽  
Research Article ◽  
And Function

ABSTRACTMuch has been published about abstracts as a written genre and less attention has been paid to lexical bundles and “moves” in the abstracts of different disciplines.  The purpose of this paper is to select the most common lexical bundles of abstracts in four different fields of knowledge, analyse their structure and function and classify them according to the “moves” they perform. 210 abstracts of 4 different disciplines were collected and the lexical bundles extracted were analysed. The results reveal important differences associated to disciplinary variation in the types of bundles, their structure and function and in the structure of the moves. These finding suggest that disciplinary variation should be considered in academic writing courses. 

Comparing lexical bundles across the introduction, method and results sections of the research article

Corpora ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Hesamoddin Shahriari
Keyword(s):  
Applied Linguistics ◽  
Structure And Function ◽  
Discourse Structure ◽  
Functional Categories ◽  
Lexical Bundles ◽  
Token Frequency ◽  
Research Article ◽  
Functional Differences ◽  
Close Relationship ◽  
And Function

Despite the prolific amount of research into the discourse structure of the research article (RA), comparisons between the different sections of this important register have been extremely rare. This study is an attempt to analyse the structure and form of three main sections of the RA (i.e., Introduction, Method and Results) through examining the frequency, structure and function of lexical bundles found within each. By comparing the three sections, a better understanding of in-text linguistic variation (i.e., differences in the use of lexical bundles across the three sections) can be achieved. For this purpose, a corpus of 200 research articles in applied linguistics, segmented into the three sections noted above, was compiled. A list of four-word lexical bundles occurring at least thirty times per million words in the overall, one million-word corpus was made. Subsequently, each of the three sub-corpora was searched for any of the bundles on the list. The findings reveal the Results to be the most densely formulaic part of the RA, both in terms of the type/token frequency of bundles and the number of unique bundles that were not seen in any of the other sections. This section of the RA also included longer sequences of bundles than any other part. Structural and functional differences were also discovered among the three sections; some of these differences, especially in the distribution of various functional categories, indicated the existence of a close relationship between the discourse aims of a given section and the lexical bundles that are most characteristic of that part of the RA.

Bridging boundaries across genre traditions

2017 ◽  
Vol 24 (3) ◽  
pp. 259-293
Author(s):  
Isaac Nuokyaa-Ire Mwinlaaru
Keyword(s):  
Identity Construction ◽  
Frequency Distribution ◽  
Academic Writing ◽  
Systemic Functional Linguistics ◽  
Applied Linguistics ◽  
Research Articles ◽  
Lexical Bundles ◽  
Functional Linguistics ◽  
Research Article

Abstract This study explores the benefits of a synergy between ESP research on genre and theoretical dimensions of Systemic Functional Linguistics (SFL). It models genre on SFL dimensions and employs this model to analyse 200 biodata written by Applied Linguistics scholars, 100 each from research articles and seminar posters. Data were analysed from contextual, logico-semantic and lexicogrammatical perspectives. The findings reveal five generic stages in biodata. The frequency distribution of these stages and the phases that realise them shows variation between research article bios and seminar bios. The most frequent logico-semantic (or rhetorical) relations identified among stages and phases are of the expansion type, namely addition and elaboration, Further, collocational frameworks are used in organising some generic phases into waves of meaning and in construing different identities. Finally, evaluative resources, in the form of lexical bundles, modification and circumstantial elements in the clause, are employed by writers to boost their professional achievements and promote themselves. These findings contribute to theoretical discussions on genre and the scholarship on the interface between identity construction and academic writing, and also motivate further research.

scholarly journals EFL Learners’ Development of Voice In Academic Writing: Lexical bundles, Boosters/Hedges and Stance-taking Strategies

2018 ◽  
pp. 96-124
Author(s):  
Christian Christian Fallas Escobar ◽  
Lindsay Chaves Fernández
Keyword(s):  
Academic Writing ◽  
Teaching And Learning ◽  
Composition Courses ◽  
Student Surveys ◽  
Lexical Bundles ◽  
Efl Learners ◽  
Writing Courses ◽  
L2 Learners ◽  
Efl Composition ◽  
Authorial Voice

In EFL composition courses, teaching and learning normally orbit around norms of unity, coherence, support, and sentence skills that L2 learners are expected to comply with, at the expense of opportunities to develop voice. Against this backdrop, we resolved to examine the extent to which students’ exposure to and practice with lexical bundles, boosters/hedges and stance-taking strategies allows them to build a stronger discoursal and authorial voice as future academic writers. Evaluation of the students’ works revealed their level of success in this endeavor and analysis of student surveys unveiled the tensions and struggles they faced along the way. At the end of this paper, we advocate for academic writing courses to be transformed into spaces where students not only come to terms with the basic norms they have to conform to, but also build a discoursal and authorial voice as L2 writers.

scholarly journals Protein acetylation: an important mechanism in actinobacteria

2018 ◽  
Vol 38 (2) ◽  
Author(s):  
Huaidong Zhang ◽  
Ximing Xu
Keyword(s):  
Amino Acid ◽  
Structure And Function ◽  
Lysine Acetylation ◽  
Protein Acetylation ◽  
Research Article ◽  
Act Domain ◽  
Amino Acid Binding ◽  
Amino Acid Sensing ◽  
And Function ◽  
The Relationship

This is a commentary on the research article by Lu et al. recently published in Bioscience Reports. The GCN5-like acetyltransferases with amino acid-binding (ACT)-GCN5-related N-acetyltransferase (GNAT) domain organization have been identified in actinobacteria by Lu et al. (2017). The ACT domain is fused to the GNAT domain, conferring amino acid-induced allosteric regulation to these protein acetyltransferases (Pat) (amino acid sensing acetyltransferase (AAPatA)). Members of the AAPatA family share similar secondary structure and are divided into two groups based on the allosteric ligands of the ACT domain: the asparagine (Asn)-activated PatA and the cysteine (Cys)-activated PatA. The former are mainly found in Streptomyces; the latter are distributed in other actinobacteria. The authors investigated the effect of Asn and Cys on the acetylation activity of Sven_0867 (SvePatA, from Streptomyces venezuelae DSM 40230) and Amir_5672 (AmiPatA, from Actinosynnema mirum strain DSM 43827), respectively, as well as the relationship between the structure and function of these enzymes. Research history and progress on acetyltransferases and lysine acetylation of proteins were discussed. The activity of PatA and acetylation level of proteins may be closely correlated with intracellular concentrations of Asn and Cys in actinobacteria.

scholarly journals Investigations of Protein Structure and Function Using the Scientific Literature: An Assignment for an Undergraduate Cell Physiology Course

2003 ◽  
Vol 2 (4) ◽  
pp. 248-255 ◽  
Author(s):  
Amy B. Mulnix
Keyword(s):  
Protein Structure ◽  
Student Perceptions ◽  
Small Groups ◽  
Scientific Literature ◽  
Structure And Function ◽  
Cell Physiology ◽  
Protein Structure And Function ◽  
Undergraduate Biology ◽  
Research Article ◽  
And Function

Undergraduate biology curricula are being modified to model and teach the activities of scientists better. The assignment described here, one that investigates protein structure and function, was designed for use in a sophomore-level cell physiology course at Earlham College. Students work in small groups to read and present in poster format on the content of a single research article reporting on the structure and/or function of a protein. Goals of the assignment include highlighting the interdependence of protein structure and function; asking students to review, integrate, and apply previously acquired knowledge; and helping students see protein structure/function in a context larger than cell physiology. The assignment also is designed to build skills in reading scientific literature, oral and written communication, and collaboration among peers. Assessment of student perceptions of the assignment in two separate offerings indicates that the project successfully achieves these goals. Data specifically show that students relied heavily on their peers to understand their article. The assignment was also shown to require students to read articles more carefully than previously. In addition, the data suggest that the assignment could be modified and used successfully in other courses and at other institutions.

scholarly journals Indonesian lexical bundles in research articles: Frequency, structure, and function

2020 ◽  
Vol 10 (2) ◽  
pp. 292-303
Author(s):  
Adi Budiwiyanto ◽  
Totok Suhardijanto
Keyword(s):  
Structural Characteristics ◽  
Academic Discourse ◽  
Structure And Function ◽  
Research Articles ◽  
Learning Material ◽  
Lexical Bundles ◽  
Discourse Function ◽  
Frequency Structure ◽  
And Function ◽  
Lexical Bundle

Recent studies show that lexical bundles in English are pervasively found in academic discourse. In addition, the characteristics of lexical bundles found vary and differ across registers and genres. Nevertheless, it is still interesting to carry out in languages other than English. This study aims to discover the characteristics of Indonesian lexical bundles that cover frequency, structure, and function in research articles. This study adopted a mixed-method. Identification of the lexical bundle was carried out using WordSmith 7.0 on a corpus comprising 3,125,546 words, taken from 1126 texts, and consisting of six disciplines. With a frequency threshold of 40 per million words and a minimum distribution of 5 texts, 197 lexical bundles have been obtained, consisting of three- to six-word bundles with a total occurrence of 51,813 times. In terms of structure, the incomplete structure is dominating the bundles by 78.7%, with a total frequency of occurrence 38,749 times. This research finds that the pattern of lexical bundles can be classified into five types: noun-based, prepositional-based, verb-based, adjective-based, and clause-based bundles. Lexical bundles in research articles are generally clause-based (49.2%). This indicates that Indonesian lexical bundles vary in structure. The use of clause fragments and passive verbs are the main features in this genre. In terms of the discourse function, research-oriented bundles are the functions that are commonly used, while participant-oriented bundles are the least. Each discourse function has its own structural characteristics. It is also found that one lexical bundle can have two functional categories. These findings contribute to a better understanding of the characteristics of written academic discourse. From the pedagogical point of view, the findings can be used as learning material for both native and non-native speakers.

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

Osseointegration interface of calcified bone and endosseous implants

1992 ◽  
Vol 50 (2) ◽  
pp. 1096-1097
Author(s):  
K.E. Krizan ◽  
J.E. Laffoon ◽  
M.J. Buckley
Keyword(s):  
Structure And Function ◽  
Titanium Implants ◽  
En Bloc ◽  
Endosseous Implants ◽  
Ultrastructural Studies ◽  
The Past ◽  
Cacodylate Buffer ◽  
One Year ◽  
And Function

With increase use of tissue-integrated prostheses in recent years it is a goal to understand what is happening at the interface between haversion bone and bulk metal. This study uses electron microscopy (EM) techniques to establish parameters for osseointegration (structure and function between bone and nonload-carrying implants) in an animal model. In the past the interface has been evaluated extensively with light microscopy methods. Today researchers are using the EM for ultrastructural studies of the bone tissue and implant responses to an in vivo environment. Under general anesthesia nine adult mongrel dogs received three Brånemark (Nobelpharma) 3.75 × 7 mm titanium implants surgical placed in their left zygomatic arch. After a one year healing period the animals were injected with a routine bone marker (oxytetracycline), euthanized and perfused via aortic cannulation with 3% glutaraldehyde in 0.1M cacodylate buffer pH 7.2. Implants were retrieved en bloc, harvest radiographs made (Fig. 1), and routinely embedded in plastic. Tissue and implants were cut into 300 micron thick wafers, longitudinally to the implant with an Isomet saw and diamond wafering blade [Beuhler] until the center of the implant was reached.

Use of human autoantibodies and immunoelectron microscopy to study structure and function of the nucleolus and nuclear bodies

1992 ◽  
Vol 50 (1) ◽  
pp. 506-507
Author(s):  
Robert L. Ochs
Keyword(s):  
Electron Microscopy ◽  
Structure And Function ◽  
Nuclear Bodies ◽  
Nuclear Interior ◽  
Coiled Bodies ◽  
Interchromatin Granules ◽  
And Function ◽  
Conventional Electron Microscopy ◽  
Perichromatin Granules ◽  
Perichromatin Fibrils

By conventional electron microscopy, the formed elements of the nuclear interior include the nucleolus, chromatin, interchromatin granules, perichromatin granules, perichromatin fibrils, and various types of nuclear bodies (Figs. 1a-c). Of these structures, all have been reasonably well characterized structurally and functionally except for nuclear bodies. The most common types of nuclear bodies are simple nuclear bodies and coiled bodies (Figs. 1a,c). Since nuclear bodies are small in size (0.2-1.0 μm in diameter) and infrequent in number, they are often overlooked or simply not observed in any random thin section. The rat liver hepatocyte in Fig. 1b is a case in point. Historically, nuclear bodies are more prominent in hyperactive cells, they often occur in proximity to nucleoli (Fig. 1c), and sometimes they are observed to “bud off” from the nucleolar surface.

Depletion and Reconstitution of Active E. Coli Ribosomes

1975 ◽  
Vol 33 ◽  
pp. 640-641
Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins
Keyword(s):  
Protein Biosynthesis ◽  
Large Subunit ◽  
High Resolution Electron Microscopy ◽  
Small Subunit ◽  
Structure And Function ◽  
Biologically Active ◽  
Biological Macromolecules ◽  
E Coli ◽  
Resolution Electron ◽  
And Function

Correlations between structure and function of biological macromolecules have been studied intensively for many years, mostly by indirect methods. High resolution electron microscopy is a unique tool which can provide such information directly by comparing the conformation of biopolymers in their biologically active and inactive state. We have correlated the structure and function of ribosomes, ribonucleoprotein particles which are the site of protein biosynthesis. 70S E. coli ribosomes, used in this experiment, are composed of two subunits - large (50S) and small (30S). The large subunit consists of 34 proteins and two different ribonucleic acid molecules. The small subunit contains 21 proteins and one RNA molecule. All proteins (with the exception of L7 and L12) are present in one copy per ribosome.This study deals with the changes in the fine structure of E. coli ribosomes depleted of proteins L7 and L12. These proteins are unique in many aspects.

Sign in / Sign up

Export Citation Format

Share Document