The aim of this research is to investigate object omission based on Role and Reference Grammar. Object omission is a valency-reduction process in which a verb which is transitive in nature, appears without its object. This study, will indicate semantic, syntactic and pragmatic representation of the aforementioned construction with respect to the presented concepts in Role and Reference Grammar including the layered structure of the clause, logical structure, semantic macroroles, information structure, activation status of the referents and linking algorithm. Explaining object omission in the framework of RRG, indicates one of the advantages of this Grammar. Although RRG attends to the interaction between form and function, it declines the abstract layers or elements in the syntactic analysis. Accordingly, in this Grammar the syntactic structure of the clause is represented based on what is explicitly applicable. Therefore, RRG is not faced with any restriction in explaining object omission and regarding what is explicitly presented in the sentence, it behaves with transitive verbs which omit their objects as intransitive ones. The most specific attainments of investigating object omission in the framework of RRG are as follows: In the layered structure of a clause with omitted object, one of the arguments of the core will be reduced and the syntactic representation will be like an intransitive verb with just one argument (subject) in the core. The logical structure of such verbs, likewise, will be represent with just one argument (x), unlike transitive verbs which has two arguments (x, y) in logical structure. Regarding the aktionsart type of the verbs, the findings indicate that activities are the most frequent verbs in object omission construction. the reason is that the second argument of activity verbs is not a macrorole and therefore can be omitted. Describing object omission with regard to information structure and activation status of the referents in RRG shows that as in the aforementioned construction the object is omitted, it cannot be a focal or topical element and its referent can be considered as an accessible one. Since it is the hearer’s knowledge of the world that makes it possible to understand the notion of the omitted object. Moreover, in this study, regarding object omission construction, linking algorithm from semantic to syntax and from syntax to semantics has been provided. The bidirectional diagrams show that the linking principles of selecting and linking undergoer in both directions will not exist in the objectless sentences.

This study is concerned with a formal representation of auxiliation in four auxiliary constructions in Persian. These include the modal ‘ bayad’ construction, the future tense ‘ khastan’ construction, the aspectual ‘ dashtan’ construction, and the modal ‘ tavanestan’ construction. Conducted within a Role and Reference Grammar framework, the study explored the degree of grammaticalization in each construction utilizing three parameters of person/number inflection, tense-sensitivity, and contiguity. Each construction reacts differently with respect to these parameters to the extent that the auxiliary verb in the relevant construction receives a distinctive syntactic treatment in the layered structure of the clause. ‘ Bayad’ is taken to be a fully developed operator exclusively projected in the operator projection. ‘ Khastan’ , together with the lexical head, forms a complex nucleus demonstrating tenseinflection as well in the operator projection. ‘ Dashtan’ , constituting a non-predicating nucleus, stands in an ad-nuclear subordinate relation to the lexical head in the progressive construction. ‘ Tavanestan’ is the only modal verb within this quadripartite division that fails to constitute an auxiliary construction due to the fact that it predicates a separate argument structure of its own in the spirit of the least amount of semantic bleaching. These all attest to the fact that the syntactic projection of each auxiliary verb in the layered structure of the clause is a reflection of the degree of grammaticalization in the relevant auxiliary construction.

In this paper, the Mukriyani’s layered structure of NPs (one of the Surani’s Kurdish dialects) has been examined according to Van Valin’s (2005) framework. In this framework, NPs consist of two projections: a constituent projection consisting of a Nucleus and a Core plus one or more Peripheries for each of them, and a grammatical projection consisting of operators. This research is a descriptive-analytic one in which the data have been extracted from the written sources of Mukriyani dialect, and also from the intuition of one of the researchers who is a native Mukriyani speaker. These data have been analyzed according to the mono-layered pattern of RRG and finally the proposed Mukriyani’s NPs pattern has been offered. Among the results of this research, we can refer to the independence of NPs’ structure from the linier order of their elements; however, the enclitics attached to the NUCNreflecting the number or definiteness are among the Core or NP operators. Another result of the research shows that in Mukriyani, the post-Nucleus adjectives make the Nucleus peripheries and the pre-Nucleus adjectives are among the Core operators.

This paper is concerned with the study of locative predicates in Persian within the Role and Reference Grammar (RRG) framework and two different analyses presented by Van Valin and LaPolla (1997) and also Boutin (2004). Providing a semantically based classification of mentioned predicates in Persian is one of the objectives of this study. The other objective is testing the efficiency of the two analyses especially Boutin’ s suggestion about locative predicates in Persian. Boutin (2004) argues that there is discrepancy between semantic and syntactic valency of locative predicates within the RRG framework, since, they have a semantic valency of two and a syntactic valency of one in a large number of languages. Hence, these predicates have been treated as exceptions in terms of valency correlation. He believes that if the location (one of the arguments of locative predicates) is treated as a separate predicate, rather than referring expression, then these verbs are intransitive and not exceptions in terms of valency correlation. The findings of the present study reveal that Boutin’ s suggestion (2004) holds true in Persian locative states, achievements, accomplishments and active accomplishments, but not for activities.

This article, first, is concerned with the study of left-dislocation and its information-structural implications in Persian. Left-dislocation in Persian is syntactically manifested by the topical and contrastive left-dislocation constructions. The double external possession construction as an instantiation of the topical left-dislocation is characterized by the sequence of two external possessors in the left-periphery of the core. The contrastive left-dislocation construction is distinguished from the topical one via the focality and position of the left-dislocated element figuring inside the clause. Each construction has specific syntactic and information-structural properties that the layered structure of the clause in the present RRG, as the framework of this study, fails to account for. Incorporating the concepts of discourse saliency and contrast as explicit selection among alternatives into the information-structural lexicon in RRG, the author of the present study tries to extend the scope of the left-periphery in the theory so as to increase its typological adequacy.

In the present study Azeri Turkish noun phrase construction is investigated in the framework of Role and Reference Grammar and Van Valin's (2005) theoretical pattern. In this descriptive analytical study, the data was selected from written resources and by listening to the conversations of the Azeri-speaking inhabitants of eastern Azerbaijan and only sentences containing complex and compound nominal phrases were selected by purposive sampling.Data analyses revealed that complex nominal phrase consists of restrictive clauses, nonrestrictive clauses and nominal complements.Relationship in restrictive relative group is of subordinative type and the link is of nucleus type.Due to this point that nonrestrictive relative clauses don`t transfer essential information for recognizing noun to listener and haven`t semantically close relationship with nominal nucleus, relationship in this type of noun phrase is subordinative and the link is of nominal core type.Constructions that have nominal complement have a clause as an argument of nominal nucleus core.The type of relationship in this noun phrase is of subordinative type and the link is of nominal nucleus core type.Compound nominal phrase consists of conjunctive nominal phrases,endocentric,exocentric and appositive.And also, Studying of noun phrase construction based on Role and Reference Grammar,we can refer to points that are specific to this ....

By adopting library based research methodology and based on semantic and structural theories, the authors of present study have tried to prepare a report on the historical evolution of Persian complex predicates from yesterday to today including its investigation and criticism. The results of this study showed that the more we go away from the beginning of Grammar textbooks compilation and special scientific attention to the category of the verb, the more complex predicates construction and the manner we should recognize them get evolved. In this respect, it should simultaneously pay attention to the morphological, syntactic and semantic criteria. Thus, a complex predicate consists of two parts (Noun or adjective +light verb) where both blocks in sum have a unified meaning and has the attributive function in the sentence and its ability to expand does not concern its compounding.

In our ordinary and everyday speech and in the informal and colloquial contexts in general, we encounter the use of constructions, in which two verbs appear in a “ verb-verb” situation, thus making a complex predicate construction, such as "keš id bordeš ", "gereft xabid", and "daram miravam". All these three constructions have a common feature of adjacency of verbs, in which one verb has a matrix function and the other has a dependent function. Thus, in the present study, they were studied under the title of "adjacent verbs". The authors believed that the “ Role and Reference Grammar (RRG)” would provide a useful theoretical framework for better understanding of the “ construction of adjacent verbs” . In RRG, all linguistic constructions are explained in three dimensions: syntactic, semantic, and pragmatic (focus structure). Accordingly, in the present paper, we first classified the different types of adjacent verbs and then discussed their features. It starts by identifying the syntactic, semantic, and focus structure representations will be discussed and then, the constructional scheme of adjacent verbs in Persian will be represented.

Introduction: The expected values of hematologic and serum biochemical parameters in domestic animal species can be affected by breed, age, environment, and nutrition. Established breed-specific Reference intervals (RI) are an important tool for monitoring the health of sheep. There is a lack of published data on biochemical RI for Sngsari sheep. Thus, the aims of this study were to establish RI for select of serum biochemical parameters for Sangsari sheep by Reference Value Advisor (RVA) method and provide information on the studied parameters for both sex of this breed in order to form a basis for clinical interpretation. Materials and Methods: Sixty healthy Sangsari sheep including 26 ewes and 34 rams (2– 4 years old) were chosen from the breeding station of Sangsari sheep among 150 sheep in Damghan, Semnan, Iran. The type of feeding, all the animals had free access to water and to good-quality alfalfa hay (90. 0 % DM, 15. 8 CP % DM, 50. 4NDF%DM, 31. 6ADF%DM, 5. 8 lignin% DM, and 2. 2 EE % DM). Concentrate (23 % oats, 36 % corn, 38 % barley, and 3%mineral and vitamin supplements) was provided once daily (200 g per animal per day). In the sampling day, breeder signed a subscription form and completed a primary questionnaire consisting of specific questions about past and current health status, sexual status, medications used, and familial and reproductive medical history. Complete physical examinations were performed by the same experienced veterinarian on each sheep. In order to reduce stress, blood samples were taken in the station with minimal changes in the usual schedule of the sheep. Blood samples (taken from the jugular vein) were collected in simple tubes in order to separate the serum (centrifuged at 3000 rpm for 10 min) for biochemical analysis. Samples transported at +4 ° C to the laboratory department of the Faculty of Veterinary Medicine, Semnan, Iran. Biochemical parameters were measured by a autoanalyzer. These parameters included alkaline phosphatase (ALP), gamma glutamyletransferase (GGT), aspartate aminotransferase (AST), blood urea nitrogen (BUN), total protein (TP) and albumin (Alb). For statistical analysis, data were analyzed by Reference Value Advisor and outliers were deleted if detected according to Tukey or Dixon. RIs, according to sample size, were determined using a robust method and following Box-Cox transformation of data. The data were normally distributed, and differences between sexes in biochemical parameters were analyzed using independent sample T test. A value of P<0. 05 was considered as significant. Results and Discussion: The RI of biochemical parameters obtained from adult healthy Sangsari sheep includes the following: ALP 49. 24-564. 84 u/l; GGT 24. 14-62. 23 u/l; AST 10. 86-338. 40 u/l; BUN 6. 91-26. 43 mg/dl; TP 5. 19-13. 95 gr/dl and Alb 0. 92-3. 63 gr/dl. Established RI of biochemical parameters for ewes and rams, respectively including: ALP 29. 98-702. 89 u/l; GGT 22. 41-54. 49 u/l; AST 1. 36-279. 89 u/l; BUN 5. 9526. 86 mg/dl; TP 5. 75-12. 83 gr/dl; Alb 0. 84-2. 77 gr/dl and ALP 106. 08-568. 55 u/l; GGT 20. 80-58. 30 u/l; AST 360. 12 u/l; BUN 8. 15-26. 04 mg/dl; TP 4. 66-15. 59 g/dl and Alb 0. 74-3. 77 g/dl. Interpretation of the biochemical results in different breeds of sheep, with regard to RI for each parameter, in conjunction with history, clinical findings and other paraclinical tests helps the clinician to reach a definitive diagnosis. A unique feature of Sangsari sheep is that they are highly adaptable with desert and mountain ranges with high tolerance of drought conditions. This breed is also relatively small size and light weight, and most studies have focused on genetic characteristics associated with this trait. In view of the characteristics mentioned above and considering the lack of Reference range for biochemical parameters, it is necessary to determine Reference intervals in Sangsari sheep. In order to establish a comprehensive Reference interval in Sangsari sheep, a select biochemical parameters were evaluated in the present study. Almost most of the established RI for biochemical parameters in this study differed from previously published RI, so that the lower and upper limits of RI of theses parameters (with the exception of BUN) were lower and higher than the values previously reported. Differences between obtained RI for the Sangsari sheep and previously reported RI for other breeds may be attributed to variations in hormonal influences, hydration status, dietary differences, or adaptations to a desert environment, age, breed, season of study and analytic method. Conclusion: The obtained data provided Reference interval for biochemical parameters in Sangsari sheep for the first time. Present study demonstrates significant differences in most of the biochemical parameters. Reference intervals determined in this study provide a baseline for interpreting biochemical results in Sangsari sheep, and contribute to optimization of the management of this species.

Background & Objective: In addition to pyramidal neurons and interneurons, the hippocampus contains Astrocytes that play important roles in regulating ion flux currents, energy production, neurotransmitter release and memory. Learning needs some instrument for information storage and information maintenances mechanisms resemble to memory. The aim of this study was determination of spatial memory effect on the number of astrocytes in rat’s hippocampus.Materials & Methods: In this experimental study, with usage of Morris Water Maze and Reference memory technique, we used 10 male albino wistar rats. 5 rats were in control group and 5 rats in Reference memory group. After histological preparation, the slides were stained with PTAH staining for showing the Astrocytes. Results: The findings of this study showed significant difference in astrocytes number in CA1, CA2 and CA3 area of hippocampus between control and Reference memory group. The mean and SD of astrocytes in CA1, CA2 and CA3 of Reference memory group were 118.57±25.29, 58.91±23.59 and 116.6±31.14, that they are more than control group with 49±17.29 in CA1, 48.8±25.21 in CA2 and 41.95±11.22 in CA3. Conclusion: We concluded that the number of astrocytes increased due to spatial learning (e.g. Reference memory method).