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نویسندگان: 

نشریه: 

NANOSCALE RES LETT

اطلاعات دوره: 
  • سال: 

    2018
  • دوره: 

    13
  • شماره: 

    1
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    88
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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نویسنده: 

RAHMATI M. | MOHAMMADINASAB E.

اطلاعات دوره: 
  • سال: 

    2014
  • دوره: 

    22
تعامل: 
  • بازدید: 

    127
  • دانلود: 

    0
چکیده: 

IN THE FIRST PART OF THIS STUDY, PHYSICALPROPERTIES OF 11 DIFFERENT TYPES OF POLYETHYLENE GLYCOLS: C2NH4N+2ON+1 (N: 1-11) SUCH ASDIPOLE (D), QUADRUPOLE (Q), OCTAPOLE (O) AND HEXADECAPOLE (HEX) ELECTRIC MOMENTS ARE CALCULATED BY USE OF THE GAUSSIAN 98 PROGRAM AT THE HARTREE-FOCK (HF) LEVELS ON 3-21G BASIS SET. IN THE SECOND PART OF THIS STUDY FOR ABOVE MENTIONED MOLECULES ARE CALCULATED 5 TOPOLOGICAL INDICES SUCH AS RANDIC (X), ZAGREB (M1), SCHULTZ (MTI), WIENER (W) AND BALABAN (J) AND THEN THE RELATIONSHIP OF MENTIONED PHYSICAL PROPERTIES WITH ABOVE MENTIONED TOPOLOGICAL INDICES IS STUDIED. AFTER CALCULATING THE INDICES PREVIOUSLY DEFINED, PARTIAL LEAST SQUARES REGRESSION WAS PERFORMED AND THE BEST MODEL WAS TAKEN AS THE ONE PRESENTING THE OPTIMAL VALUE OF PREDICTION COEFFICIENT, TAKING INTO ACCOUNT THE NUMBER OF DESCRIPTORS USED.ACCORDING TO THE DATA: RESULT 1) THE VALUES OF Q AND HEX MOMENTS DECREASE BYINCREASING NUMBER OF CARBONS AND INCREASING VALUES OF THE X, M1, MTI, W, J INDICES OF THE POLYETHYLENEGLYCOLS. THE LOGARITHMIC OF ABSOLUTEVALUES OF Q AND HEXMOMENTS INCREASE BY INCREASING NUMBER OF CARBONS AND INCREASING VALUES OF THEMENTIONED INDICES OF THE STUDIED MOLECULES. DAND O MOMENTS HAVE NOT GOOD CORRELATION WITH VALUES OF THE X, M1, MTI, W, J INDICES. RESULT 2: LINEAR DIAGRAMS OF Q, HEX, LOGQ, LOGHEX VERSUS THE X, M1, MTI, W, J ARE DRAWN AND THEIR ONE DEGREE EQUATIONS WAS DEFINED AND THE VALUES OF R2 IS CHARACTERIZED FOR THEM. ACCORDING TO THE DATA THE VALUES OF R2 IN LINEAR EQUATION OF Q MOMENT VERSUS THE 4 TOPOLOGICAL INDICES SUCH AS X, M1, MTI, W IS ACCEPTABLE AND IS NEAR TO 1. THE VALUES OF R2 IN LINEAR EQUATIONS OF HEX MOMENT VERSUS THE W, MTI INDICES IS ACCEPTABLE AND NEAR TO 1. THE VALUES OF R2 IN LINEAR EQUATION OF LOGQ AND LOGHEX VERSUS THE 3 TOPOLOGICAL INDICES SUCH AS X, M1, J IS ACCEPTABLE (NEAR TO 1). QUANTITATIVE STRUCTURE-PROPERTY RELATIONSHIPS (QSPR) SUBJECTS ARE STUDIED AND THE RESULTS OF QUANTUM CALCULATIONS ARE COMPARED WITH THE RESULTS OF LINEAREQUATIONS OF GRAPH THEORY CALCULATIONS AND THEN IS DEFINED THAT THE VALUES OF THE Q AND HEX MOMENTS HAVE NOT CORRELATION WITH ABOVE MENTIONED TOPOLOGICAL INDICES, BUT THE VALUES OF LOGQ HAS GOOD CORRELATION WITH M1, X INDICESRESPECTIVELY, THEREFORE M1 IS THE BEST INDEX FOR PREDICTING THE VALUES OF LOGQ. AND ALSO THE VALUES OF LOG HEX HAS GOOD CORRELATION WITH J, M1, X INDICES RESPECTIVELY. THEREFORE J IS THE BEST INDEX FOR PREDICTING THE VALUES OF LOGHEX. FURTHER, THE RESULTS OF SUCH STUDIES ARE USED TO GET INTO THE QSPR SUBJECTS.

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اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    22
تعامل: 
  • بازدید: 

    160
  • دانلود: 

    0
چکیده: 

IN THIS STUDY, PHYSICAL PROPERTIES OF 10 DIFFERENT TYPES OF AMINOACIDS, C3NON+1NNH5N+2 (N: 1-10) SUCH AS DIPOLE (D), QUADRUPOLE (Q), OCTAPOLE (O) AND HEXADECAPOLE (HEX) ELECTRIC MOMENTS ARE COMPUTED BY USE OF THE GAUSSIAN 09 PROGRAM AT THE HARTREE-FOCK (HF) LEVELS ON 6-311G BASIS SET, AND ALSO THE RANDIC (X), HARARY (H), SCHULTZ (MTI), WIENER (W) AND BALABAN (J) INDICES ARE CALCULATED....

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نویسندگان: 

Baghernejhad Elnaz

اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    11
  • شماره: 

    2
  • صفحات: 

    29-60
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    206
  • دانلود: 

    29
چکیده: 

ABSTRACT Despite a wide range of components and criteria affecting travel behavior presented through empirical research, the results of these studies are inconclusive, which could be due to the difference between these components and criteria in the study areas. Therefore, this research presented a method to determine which factors in different physical developments affect travel behavior due to the differences in various physical developments. The required information was collected through 271 questionnaires at the level of three neighborhoods of Monirieh, Koye Bimeh, and Koye Golestan in Tehran, Iran, as the old, conventional, and new neighborhoods, respectively. ANOVA test was exerted to analyze the significant difference between different development patterns in three neighborhoods. Dunnett's T3 was applied to determine which neighborhood caused the difference between groups. Also, the factors affecting travel behavior were obtained based on exploratory factor analysis indicators. Finally, by comparing the results of the ANOVA test and regression analysis, it was discovered that factors such as car ownership, dependence and pro-liking for private cars, density and access to educational centers and parks, access to medical and service centers, and variety and density of retail stores had been introduced as the factors affecting travel behavior due to the differences in development patterns. However, proximity to the public transportation station, accessibility preferences in choosing a residence, dependence, and pro-liking for other than a private car, having a license, number of children under five years old, and age have influenced travel behavior regardless of the variation between neighborhoods. Extended Abstract Introduction Finding factors affecting travel behavior has been one of the main concerns of transportation planners. However, in the last two decades, the importance of the influence of the features of the built environment, including land use, along with demographic-economic characteristics, travel behavior, and attitudes of people, has been raised by urban planners. Studies seek to find factors affecting travel behavior, especially land use characteristics. Despite presenting a wide range of components and criteria affecting travel behavior, the results of the studies are inconclusive, which could be due to the difference between these components and criteria in the study areas. Therefore, this research presented a method to determine which factors in different physical developments affect travel behavior due to the differences in various physical developments. In order to do this, it must first be determined whether the study areas/different development patterns have a significant difference in terms of travel behavior or not. In case of a positive answer to the previous question, the following question is which study areas caused this difference. The next question arises: -Which physical and non-physical characteristics affect travel behavior due to distinctions between different development patterns?   Methodology The present research method is analytical and experimental based on quantitative methods. This research chose the frequency of travel by private car, public transportation, and walking as the travel behavior. According to the research's purpose, indicators and criteria affecting travel behavior were extracted after reviewing the theoretical and experimental literature. Then, the required information was collected through 271 questionnaires at the level of three neighborhoods of Monirieh, Koye Bimeh, and Koye Golestan as the old, conventional, and new neighborhoods, respectively. The questionnaire was compiled as a Likert scale in five parts of travel information, demographic-economic characteristics, perceptual characteristics of land use, travel habits, and access preferences of people in choosing their residence. ANOVA test was used to analyze the significant difference between different groups of a characteristic (here, different development patterns or the three case studies). Dunnett T3 was exerted to determine which neighborhood caused the difference between groups. Also, the factors affecting travel behavior were obtained based on exploratory factor analysis indicators. Finally, by comparing the results of the ANOVA test and regression analysis, it was discovered which factors affecting travel behavior were due to the differences in study areas and which factors affect travel behavior regardless of development patterns.   Results and discussion This research aims to identify the factors affecting travel behavior due to the differences in development patterns. In this regard, the findings in line with the first research question show that the frequency of three modes of travel, by private car, transportation, and pedestrian, differ significantly in the three neighborhoods. Furthermore, ANOVA test results depict that there is a significant difference between these three neighborhoods in terms of factors affecting travel behavior, such as perceptually environmental characteristics of the neighborhood, dependence and pro-liking for personal cars, variety and density of retail stores, density and access to educational units and parks, access to medical and service centers, and car ownership. Finally, by comparing the results of the ANOVA test with the regression analysis assessing the relationship between physical and non-physical factors (the same indicators in the same study areas) with travel behavior, the factors affecting travel behavior owing to different development patterns were identified. Factors such as car ownership, dependence and pro-liking for private cars, density and access to educational units and parks, access to medical and service centers, and variety and density of retail stores have been introduced as the factors affecting travel behavior due to the differences in development patterns. However, proximity to the public transportation station, accessibility preferences in choosing a place of residence, dependence, and pro-liking for other than a private car, having a certificate, number of children under five years old, and age have influenced on travel behavior regardless of the variation between neighborhoods (different physical development patterns).   Conclusion In In order to discover the factors affecting travel behavior due to the differences in patterns of physical development, this research has provided a more detailed analysis of the factors affecting travel behavior. It has achieved more accurate components than previous studies in this regard. Detailed analysis of studies related to travel behavior and finding the main components affecting it, considering the extent of variables and data, can pave the way for professionals in transportation planning and urban planning, in addition to providing detailed methods and criteria in the related literature.   Funding There is no funding support.   Authors’ Contribution Authors contributed equally to the conceptualization and writing of the article. All of the authors approved thecontent of the manuscript and agreed on all aspects of the work declaration of competing interest none.   Conflict of Interest Authors declared no conflict of interest.   Acknowledgments  We are grateful to all the scientific consultants of this paper.

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اطلاعات دوره: 
  • سال: 

    2017
  • دوره: 

    6
  • شماره: 

    2
  • صفحات: 

    69-73
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    260
  • دانلود: 

    0
چکیده: 

Introduction: Previous studies revealed that anise (Pimpinella anisum L.) has several pharmacological effects including analgesic, antidepressant, anxiolytic, anti-inflammatory and antispasmodic activities. This study aimed to evaluate its effect on morphine physical dependence in mice.Methods: In this experimental study, 40 male NMRI mice (25-30 g) were randomly divided into 5 groups of 8. Control group received morphine and normal saline (10 mL/kg, i.p.) and other groups received diazepam (5 mg/kg) plus one of three doses of P. anisum (50, 100 or 200 mg/kg, i.p.). Dependence was induced by administration of increasing doses (50-75 mg/kg, i.p.) of morphine. A time of 30 minutes after naloxone injection was considered for the critical period of the withdrawal syndrome. The number of jumps and scores of 0 to 3 were given for incidences of wet dog shakes, teeth chattering, climbing, writing, diarrhea, grooming, and rearing during a 30-minute period.Results: All doses of P. anisum (P<0.01) reduced the number of jumps. Additionally, all doses of the extract reduced the behaviors of grooming (P<0.05, P<0.01 and P<0.01, respectively) and writhing (P<0.05, P<0.001and P<0.001, respectively). None doses of the extract could reduce diarrhea (P>0.05). Climbing, rearing and wet dog shakes reduced only by the high dose of the extract (P<0.05). Teeth chattering reduced by 100 and 200 mg/kg of the extract (P<0.05).Conclusion: These results obviously show that P. anisum ethanolic extract is effective in suppression of morphine physical dependence and further studies are needed to find out the responsible constituents and also the exact mechanisms of actions.

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نویسندگان: 

نشریه: 

ADDICTION BIOLOGY

اطلاعات دوره: 
  • سال: 

    2018
  • دوره: 

    23
  • شماره: 

    5
  • صفحات: 

    1010-1019
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    65
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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نشریه: 

کومش

اطلاعات دوره: 
  • سال: 

    1396
  • دوره: 

    19
  • شماره: 

    3 (پیاپی 67)
  • صفحات: 

    648-654
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    876
  • دانلود: 

    194
چکیده: 

هدف: مطالعات قبلی نشان داده اند که ورزش اختیاری و شنا شدت وابستگی فیزیکی و روانی را در موش صحرایی وابسته و قطع مورفین کاهش می دهد. هدف مطالعه حاضر بررسی اثر ورزش اجباری تریدمیل در طول القای وابستگی به مورفین بر روی نشانه های قطع مورفین به دنبال نالوکسان و رفتار شبه اضطرابی می باشد.مواد و روش ها: موش ها به مدت 7 روز فعالیت ورزشی تریدمیل نیم ساعته، هم زمان تزریق زیر جلدی مورفین با دوزهای تدریجی افزایشی(64 mg/kg و 56، 46، 36، 26، 16، 8) یک بار در روز دریافت کردند. در روز هشتم، 2 ساعت بعد از تزریق مورفین با دوز 56mg/kg سطح اضطراب ارزیابی شد. سپس در روز نهم نیز 2 ساعت بعد از تزریق مورفین با دوز 56 mg/kg با تزریق نالوکسان هیدروکلراید (0.4 mg/kg) به صورت داخل صفاقی شدت وابستگی فیزیکی مطابق مدل Gellert–Holtzman ارزیابی گردید.یافته ها: نتایج نشان داد که نشانه های درجه بندی شده شامل تعداد انقباضات شکمی، درصد از دست دادن وزن و نمره کل Gellert–Holtzman و هم چنین نشانه های چک شده مثل اسهال، بی قراری، دندان قروچه در موش های وابسته به مورفین دونده با تریدمیل از شدت کم تری نسبت به گروه غیر دونده برخوردارند. هم چنین نتایج نشان داد که تعداد ورود و مدت زمان ماندن در بازوی باز در گروه وابسته به مورفین دونده با تریدمیل بیش تر از گروه وابسته به مرفین غیر دونده است.نتیجه گیری: یافته های این مطالعه نشان داد که ورزش اجباری تریدمیل در طول القای وابستگی به مورفین موجب کاهش شدت وابستگی و رفتار شبه اضطرابی می شود. بنابراین، ورزش اجباری تریدمیل نیز همانند دیگر ورزش ها ممکن است برخی از نتایج رفتاری فیزیکی و روانی وابستگی به مورفین را کاهش دهد.

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نویسندگان: 

Fong Lores Onel | Azalea Berenguer Rivas Clara | De La Vega Acosta Jorge Eduardo | Betancourt Hernandez Juan Esmerido | Alvarez Limonta Frankoe | Mora Tasse Yoandra | Magale Santiago Ortiz Miriam | Joaquin Morris Quevedo Humberto | Meneses Mayo Marcos

اطلاعات دوره: 
  • سال: 

    2025
  • دوره: 

    12
  • شماره: 

    3
  • صفحات: 

    39-48
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1
  • دانلود: 

    0
چکیده: 

Background and Objectives: Mimosa pudica L., belonging to the Fabaceae family, has been used in the Cuban traditional culture by exposure to smoke of aerial parts combustion and in the smokable form of cigarettes, for recreational or leisure purposes and medical applications. The aim of this study was to evaluate the toxicity and physical dependence of M. pudica by the acute inhalation toxicity study and spontaneous withdrawal test in rats exposed to smoke inhalation of the plant. Methods: Mimosine content was determined by a colorimetric method. The acute inhalation toxicity study was performed following the Organization for Economic Cooperation and Development test guidelines 433. The addictive potential of the combustion products of the dried aerial parts, was evaluated through a non-precipitated withdrawal test in female Sprague Dawley rats, in both studies using plant doses of 1000 mg/kg. Results: Quantitative analysis of mimosine content in smoke showed levels of 0. 62±0. 05 µg/mg dried weight. The inhalation toxicity assessment revealed congestion in nasal cavity, focal gliosis in brain and peribronchial pneumonitis. The plant caused signs of physical dependence characterized by the manifestation of hyperactivity (excitability and aggressiveness), piloerection and soft feces, along with decreased body weight and increased rectal temperature during the period of abstinence. Conclusion: Rats exposed to M. pudica showed signs of acute inhalation toxicity similar to smokable substances such as tobacco and marijuana, and evidenced physical dependence comparable to chlordiazepoxide. These findings highlight the potential risks associated with the traditional use of M. pudica in smokable form.

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اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    12
  • شماره: 

    47
  • صفحات: 

    75-93
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    182
  • دانلود: 

    11
چکیده: 

Background: The expansion of the use of audio and video media technology has faced society with many medical, cultural and economic challenges. In the meantime, excessive use of mobile phones can cause many problems. Objective: The aim of this study was to construct and validate a questionnaire on physical and psychological injuries of mobile phones. Method: The method of the present study was descriptive-correlational and confirmatory factor analysis. The statistical population of the study consisted of all citizens of Khorramabad with a diploma or higher in 1399, which was selected as a statistical sample by available sampling method of 200 people online and virtual. Results: The results showed that the factorized physical and psychological harm questionnaire of cell phone with 42 questions and 10 components (fear of loss, vibration syndrome, duck syndrome, nomophobia, insomnia, hearing problem, eye syndrome, tunnel and neck syndrome SMS) and has good reliability, validity and flexibility in terms of psychometrics. Discussion and Conclusion: The questionnaire of factor analysis of physical and psychological injuries of mobile phones can be used to identify and study the physical and psychological injuries of mobile phones.

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اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    21
تعامل: 
  • بازدید: 

    230
  • دانلود: 

    0
چکیده: 

GINGER (ZINGIBER OFFICINALE ROSCOE), A WELL-KNOWN SPICE PLANT, HAS BEEN USED TRADITIONALLY IN THE TREATMENT OF A WIDE VARIETY OF AILMENTS SUCH AS OPIATES WITHDRAWAL-INDUCED DISORDERS. HOWEVER, ITS INFLUENCES ON OPIOID TOLERANCE AND DEPENDENCE HAVE NOT YET BEEN CLARIFIED. ...

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