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Tense plays an important and determining role in human verbal communication; therefore, one of the things that should be addressed in language teaching is the discussion of time and ways to recognize it. Considering the role and importance of grammatical tense recognition in language learning and the lack of related research regarding Persian language learning, the purpose of the present research is to investigate the role of available cues in sentences to recognize grammatical tense by Chinese Persian learners of beginner and advanced levels; For this purpose, 49 Persian learners of Chinese language were selected by available sampling method and divided into two groups of Chinese language beginner (26) and advanced (23) based on the level determination test. The instruments used in this research were two tests in two stages; In the first stage, by using the sentence recognition test, the subjects marked the time of the sentences they heard in the answer sheet, and in the second stage, the same test was performed; with the difference that in this test, the sentences did not have time adverbs. The results of this research showed that the subjects of the beginner Chinese language meaningfully used lexical clues when recognizing the time of the sentence, and the subjects of the advanced level simultaneously used two lexical clues and present tense. Regarding the role of gender, the results showed that there is no significant relationship between gender and the ability to understand sentence time. The results of this research can be useful for language learners, teachers, and producers of educational content and also for test designers.
 

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 The notional-functional approach is one of the most influential theories in the field of foreign language teaching and almost all English, French, German, Italian, Spanish and even Arabic, Hebrew and Turkish language teaching resources, have considered the principles of this approach, in order to produce educational contents. The key principle of this approach is to create purposeful and communicative based balance between the language notions and functions and the real situations. Nevertheless, regretfully not much attention to this approach is paid in the authentic teaching Farsi to the foreigners’ resources. In this study, first the notional-functional approach and the foremost language notions and functions in the framework of this approach are presented. Then, the representation rate of these notions and functions in let’s learn Persian (Zolfaghari & Etal., 2002) and Persian language (Safarmoqadam, 2007) teaching series were evaluated. This evaluation have been made through a self-developed checklist. This checklist consists of 10 basic questions on the content of courses and 6 default responses: at all, very low, low, medium, high and very high with respectively 0, 1, 2, 3, 4 and 5 points assigned to each question. According to the results, the let’s learn Persian series gained 35 and the Persian language series gained 16 points out of 50. Although the overall result of this project suggests the superiority of the let’s learn Persian series, but the rate of language notions and functions diversity and distribution in both series, lead us to purposeful planning for teaching Farsi based on language notions and functions.   

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This study was conducted to evaluate seasonal concentrations of macro-minerals in serum or plasma of sheep under grazing conditions to establish mineral deficiencies and excesses over a two-seasonal grazing period (fall-winter and spring-summer corresponding to the rainy and dry seasons) according to variations of year, region and animal classes in Sabalan, Iran. In each flock, ten sheep (38-50 kg body weight, three females groups: yearlings, growing and mature, in addition to one male group) were selected for the study purpose. Approximately 10 ml blood samples were collected in two stages by jugular vein, which were then centrifuged, and plasma or serum were obtained. Plasma phosphorous (P) was determined by the colorimetric method. Serum Ca and Mg were measured by atomic absorption spectrophotometry. Overall, means of serum Ca, Mg and plasma P concentrations were 11.73, 3.24 and 4.92 mg dl^-1 in dry season and 12.01, 3.17 and 5.3 mg dl^-1 in rainy season, respectively. Year, season and region significantly affected (P< 0.001) serum concentration of Ca but region had no effect (P> 0.05) on Plasma P. Unlike season, year effect on Mg concentration was significant (P< 0.05). These macro-mineral concentrations of serum and plasma were not different (P> 0.05) between animal classes. Ca and P deficiencies were higher in rainy than the dry season (6.24 vs. 3.38 and 16.52 vs. 15.2 percent, respectively). Although overall mean of serum Ca and P had higher values than the critical levels of these minerals in sheep blood, our results indicate that sheep in Sabalan need a common salt Ca and P supplement to enhance the blood level of these essential minerals in some sheep.

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The research aims to compare anxiety of non-native (Iraqi) Persian language learners in computer adaptive placement test of Persian grammar and vocabulary with its linear computerized test counterpart. The main concern of this study was to scrutinize the probable relationship between linear and adaptive vocabulary and grammar placement tests and testees’ anxiety (in case there is any)?" Explanatory mixed-method approach was used in the present study. The procedure for data collection was field research via the application of questionnaire and tests. The designed test was given to 48 Iraqi male and female students with the age range of 25-40 years from Persian language center of Tarbiat Modares University, with different language levels and in two forms of adaptive and linear computerized tests. According to positive upper and lower limits of average variance, the researcher came up to the conclusion that the average of anxiety component in linear computer test is more than the average 3. The findings revealed that test anxiety level of Iraqi students in adaptive test was lower than the linear computer test. These results help to encourage teachers and educational centers to design more computer adaptive tests.

1. Introduction
The inefficiency of the language level test cannot be ignored at all. Even if a learner is misplaced and placed in a course that does not suit his needs, it does not diminish the importance of this issue. Inconsistency in the content or at least in the framework of tests will be considered a big weakness in education. Lack of valid placement test means lack of correct identification; and misdiagnosing the learner's level means assessing the needs, determining the wrong goal and curriculum, as well as wasting his and the teacher's energy, and ultimately discouraging the learner. On the one hand, this issue will also lead to increased anxiety in the language learner. On the other hand, according to the world of communication and the ever-increasing progress in technology, more efficient and appropriate methods should be used for test-making or test implementation. In this regard, it should be kept in mind that the quality of the test does not sacrifice its appearance and shape.
Research Question(s)
The main research question of this study can be formulated as follows:
 What is the relationship between linear computerized test and computer adaptive placement test of Farsi vocabulary and grammar on the testee’s anxiety level, if there is a relationship?
Following this question, the present hypothesis is proposed:
The level of test anxiety in the computer adaptive placement test is lower than in the equivalent linear computerized test.

2. Literature Review
Measurement is the process by which a better understanding of existing knowledge is gained. Quantitative and qualitative features are involved in this process. Measurement can be as simple as the teacher's personal judgment based on his classroom observations of language learners in the class, or it can be as complex as a standard test lasting several hours (Birjandi & Mosallinejad, 2012). In the teaching-learning environment, assessment is always needed to measure the efficiency or quality and efficiency of the teaching or learning process (Masters, 2014). This important process, which is generally called assessment, is not only done after teaching but can also be done before teaching or during the teaching process. Assessment and testing are two inseparable and complementary pillars of language teaching. The relationship between teaching and testing is so closely interdependent that it is not possible to only address one of them without paying attention to the other (Zandi et al., 2018).
Until recently, test designers and teachers used traditional paper-and-pencil tests to assess and measure the achievement of cognitive learning goals (Weiss & Kingsbury, 1984). The use of computers in the field of language testing and assessment dates back to 1935 when correctional officers used computers to quickly calculate test scores in the United States (Abukhzam, 2013). Computerized tests opened a new window in future tests to measure the language skills of language learners (Fleming & Hiple, 2004).
There are different types of computer-based tests. The two main types of computer-based tests are adaptive computer tests and direct computer tests. Direct (linear) computerized tests refer to the use of a computer for a test that is the same as a paper-and-pencil test format. In this way, this test has the same questions as the paper-and-pencil test, and the items are displayed in the same order as the paper-and-pencil version. Most computer-based tests are designed based on the classical test theory and extensive studies have been conducted on them (Dunn et al., 1972; Elwood, 1969; Kiely et al., 1986).
However, there will undoubtedly always be those for whom the computer is a mystery. Therefore, computers and how to use them in the language test should be introduced and taught for their needs. Anxiety is a reaction caused by internal feelings in response to external threats (Casbarro, 2005). Test anxiety is an important issue that arises during tests. This multidimensional structure has two main factors: the cognitive dimension and the emotional dimension. The cognitive dimension deals with mental activities around the test situation and leads to worry and unrelated or negative thoughts along with feelings of discomfort. The emotional dimension is related to the psychological component, which includes anxiety, physical reaction, and arousal (Cassady, 2004; Zeidner, 2007).
 
3. Methodology
To evaluate the correctness of the proposed hypotheses, the integrated research method was used. The method of data collection is in the field and using questionnaires and tests. In this way, firstly, the vocabulary and grammar test questions were designed in computer format for male and female Persian learners aged 25-40 with Iraqi nationality at the Persian Language Center for non-Persian speakers of Tarbiat Modares University, Shahid Beheshti University and Imam Khomeini International University, at different language levels. In the form of a computerized test, the characteristics of the test were determined. Then, 48 male and female foreign students of Iraqi nationality, who had participated in the Farsi course of Tarbiat Modares Language Center and were studying at the university at the time of the research, participated in both tests and passed the test. After the test, all language learners completed the test anxiety questionnaire.

4. Results
To answer the question of the present research, the Donald Powers (1999) questionnaire was used after the tests. Examining the research data showed that the average score of the anxiety component in the adaptive test is lower than the average. On the other hand, the average score of the anxiety component in the computer test is more than average. In this way, the average scores of anxiety in the computer test are higher than the adaptive test.
Also, the examination of the scores of both tests showed that the mean scores of anxiety in computerized and adaptive test have a significant difference. Therefore, the average score of computerized test anxiety is significantly higher than the average score of adaptive test. As a result, the level of test anxiety in adaptive computer test is lower than the linear computerized test. These findings are in line with Henning's (1991) research. However, it is contrary to the research findings of Hooper and Hannafin (1989) that computer tests cause more anxiety in testees.
These results help to encourage teachers and educational centers to design more computer adaptive tests. It also shows the effect of these tests in reducing the anxiety of language learners compared to paper-and-pencil tests or direct computer tests. Therefore, by using adaptive computer tests, language learners can take the test according to their level at home or in the institution with less anxiety, and the test results will be more reliable.
 

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Vermicomposting, or using worms along with bacteria and fungi to recycle agricultural and organic wastes into nutrient-rich bio-fertilizer, has a variety of uses including protecting plants from disease. Through semi-structured in-person interviews, vermicompost practitioners across Kermanshah Province of Iran were surveyed to determine the strengths, weaknesses, opportunities, and threats (SWOT) of this emerging technology. The results provide useful implications for agricultural policymakers in general, and, in particular, for farmers who are seeking diversified sources of income. For both vermicompost practitioners and academicians alike, the SWOT analysis methodology combined with Analytic Network Process (ANP) analysis has implications for other types of agribusiness.

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This study aimed to produce and investigate an emulsion film of gelatin by emulsion pickering method containing chitin nanoparticles. Different concentrations of nanochitin (0.2, 0.5, 1, and 2 g/g dry gelatin) and two different concentrations of corn oil (20% and 30% based on dry matter weight) were used to prepare the gelatin emulsion film by the emulsion pickering method. Then the properties of the films were investigated by examining the zeta potential, thickness, moisture and solubility, water vapor permeability (WVP), surface hydrophobicity, mechanical and thermal properties. The results showed that the gelatin emulsion containing 0.5 g/g of chitin nanoparticles was more stable than other samples. Nanochitin-stabilized emulsion films reduced moisture, solubility, and water vapor permeability compared to control films and tween-containing films, and nanochitin-containing films improved mechanical properties. In addition, the addition of nanochitin up to 0.5 g/g to the gelatin emulsion film improved the thermal properties because it led to an increase in melting temperature and enthalpy. The addition of nanochitin also increased the hydrophobic properties of the film. 30% oil concentration had a better effect on film properties than 20% oil. Therefore, the use of nanochitin as a stabilizing emulsion for pickering in gelatin films with a concentration of 30% corn oil can lead to the formation of biodegradable polymers with more acceptable properties for food packaging.