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مرکز اطلاعات علمی SID1
اسکوپوس
مرکز اطلاعات علمی SID
ریسرچگیت
strs
Issue Info: 
  • Year: 

    2020
  • Volume: 

    39
  • Issue: 

    3 (97)
  • Pages: 

    1-13
Measures: 
  • Citations: 

    0
  • Views: 

    289
  • Downloads: 

    222
Abstract: 

The purpose of this study was to design educational content of Green Chemistry METRICS for undergraduate chemistry students. Based on the purpose of the research, it was an applied-development type, and in terms of collecting and analyzing the data; a descriptive-analytical type is used. The statistical sample was a collection of books, articles, journals, and dissertations related to green chemistry which were selected and analyzed up to getting theoretical saturation. By reviewing related literature and investigating various sources on how to design the educational contents of the chemistry green, and also by directions of the field experts, during several revers phases of core coding, chapters were determined, then, according to the designated chapters, objectives were written for each topic in the target-content table. The results of this study showed that for the design of the content of training green chemistry measurements, two categories of mass measurements and environmental measurements can often be quantitatively evaluated in the twelve principles of green chemistry. In these two categories, there are various methods for assessing the greenness of a reaction (organic reaction synthesis) were identified, including atomic economy, reaction mass efficiency, material recovery parameter, environmental factor, process mass intensity, and effective mass efficiency are presented in a conceptual framework.

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Journal: 

JOURNAL OF NEUROSCIRE

Issue Info: 
  • Year: 

    2008
  • Volume: 

    28
  • Issue: 

    45
  • Pages: 

    11433-11434
Measures: 
  • Citations: 

    373
  • Views: 

    10006
  • Downloads: 

    13939
Keywords: 
Abstract: 

Yearly Impact:

View 10006

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Issue Info: 
  • Year: 

    2001
  • Volume: 

    12
  • Issue: 

    1
  • Pages: 

    1-19
Measures: 
  • Citations: 

    397
  • Views: 

    21569
  • Downloads: 

    17487
Keywords: 
Abstract: 

Yearly Impact:

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گارگاه ها آموزشی
Author(s): 

SUMATI KUMARI P.

Journal: 

J. ADV. STUD. TOP

Issue Info: 
  • Year: 

    2012
  • Volume: 

    3
  • Issue: 

    2
  • Pages: 

    66-74
Measures: 
  • Citations: 

    370
  • Views: 

    6952
  • Downloads: 

    13583
Keywords: 
Abstract: 

Yearly Impact:

View 6952

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Journal: 

AMIRKABIR

Issue Info: 
  • Year: 

    2006
  • Volume: 

    16
  • Issue: 

    63-E
  • Pages: 

    35-41
Measures: 
  • Citations: 

    0
  • Views: 

    36419
  • Downloads: 

    17229
Abstract: 

The symmetric curvature and associated curvatures of a vector bundle E with connection Ñ on a manifold M with connection Ñ were introduced. It is well-known that a total space of semi-Riemannian vector bundle over a semi-Riemannian manifold can be made into a semi-Riemannian manifold. In this case, the relation between curvatures of the Levi-Civita connections of E and M was studied. Here, the relation between symmetric curvatures of the Levi-Civita connections and their associated curvatures of E and M is studied.

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Author(s): 

REZAEI B. | RAZAVI A. | SADEGHZADEH N.

Issue Info: 
  • Year: 

    2007
  • Volume: 

    31
  • Issue: 

    A4
  • Pages: 

    403-412
Measures: 
  • Citations: 

    0
  • Views: 

    584
  • Downloads: 

    214
Abstract: 

In this paper we consider some (a, b)- METRICS such as generalized Kropina, Matsumoto and F=(a+b)2/a METRICS, and obtain necessary and sufficient conditions for them to be Einstein METRICS when b is a constant Killing form. Then we prove with this assumption that the mentioned Einstein METRICS must be Riemannian or Ricci flat.

Yearly Impact:

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strs
Author(s): 

MOGHISEH Z. | Shokrzaddeh N.

Issue Info: 
  • Year: 

    2020
  • Volume: 

    30
  • Issue: 

    4 (120)
  • Pages: 

    8-23
Measures: 
  • Citations: 

    0
  • Views: 

    372
  • Downloads: 

    247
Abstract: 

Purpose: To investigate the characteristics of misleading METRICS and identify the extent to which Iranian journals use such indicators. Methodology: Charctrisitcs were harvested form th eliterature. Then, 410 Iranian journals using such METRICS were identified from the misleading METRICS websites. Data analysis was conducted using Microsoft Excel. Findings: Sudden disappearance from the web, large number of indexed journals, ambiguous and non-scientific methodologies, lack of accurate contact information, failure to notify about the scientific and administarive staff, charging journals for the calculation of METRICS and conducting the evaluation in a short period of time were common. The name and information of 410 Iranian journals were listed in the website of 23 misleading METRICS, 49 accredited by The Iranian Ministry of Science, Research and Technology (MSRT) and 101 titles accredited by The Iranian Ministry of Health and Medical Education (MHME) mentioned at-least one misleading metric in their websites. Out of medical science journals 56% are affiliated with the medical science universities and institutions. Conclusion: Utilizing misleading METRICS negatively affect the reputation of scientific journals. That put them at the rist to be listed as as predatory journals. Editorial boards are advised to avoid being indexed in misleading METRICS and focus on reputable information and citation databases.

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Issue Info: 
  • Year: 

    2015
  • Volume: 

    10
  • Issue: 

    2
  • Pages: 

    67-75
Measures: 
  • Citations: 

    0
  • Views: 

    81677
  • Downloads: 

    31944
Abstract: 

In this paper, we study generalized Douglas-Weyl Finsler METRICS. We find some conditions under which the class of generalized Douglas-Weyl (a, b)-metric with vanishing S-curvature reduce to the class of Berwald METRICS.

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Author(s): 

TAYEBI A. | PEYGHAN E.

Issue Info: 
  • Year: 

    2012
  • Volume: 

    7
  • Issue: 

    1
  • Pages: 

    1-6
Measures: 
  • Citations: 

    544
  • Views: 

    78063
  • Downloads: 

    39505
Abstract: 

In this paper, we study the class of C 3-like Finsler METRICS which contains the class of semi-C-reducible Finsler metric. We find a condition on C 3-like METRICS under which the notions of Landsberg curvature and mean Landsberg curvature are equivalent.

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Issue Info: 
  • Year: 

    2011
  • Volume: 

    16
  • Issue: 

    -
  • Pages: 

    1323-1328
Measures: 
  • Citations: 

    315
  • Views: 

    7828
  • Downloads: 

    9195
Keywords: 
Abstract: 

Yearly Impact:

View 7828

Download 9195 Citation 315 Refrence 0
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