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      • Open Access Article

        1 - بررسی برخی خواص آناتومی و بیومتری الیاف چوب چنار (Platanus sycamore) در محورهای طولی و عرضی ساقه در استان مازندران
        علی حسن پور تیچی مجتبی رضانژاد دیوکلایی رضا علیزاده علی رضا براری
      • Open Access Article

        2 - An Investigation on the Physical, Anatomical and Fiber Biometrical Properties of Orange Wood (Citrus Spp.)
        Ramin Vaysi Iman Khajeali
         This research was aimed to investigate on the physical, anatomical and fiber biometrical properties of orange wood (Citrus Spp.). For this purpose, six discs of orange wood (Citrus Spp.) trunk from the Tonkabon region were randomly chosen. The samples were prepare More
         This research was aimed to investigate on the physical, anatomical and fiber biometrical properties of orange wood (Citrus Spp.). For this purpose, six discs of orange wood (Citrus Spp.) trunk from the Tonkabon region were randomly chosen. The samples were prepared for measured fiber biometrical, physical and anatomical properties by using Franklin and ASTM standard test methods respectively. The results showed that wood of orange wood had semi-ring porous, vessels are pairs of 2-3 group's vessels with simple aperture. The parenchyma's were longitudinal and around the vessels. There were a lot of heterogeneous rays in orange wood. The average of the number and vessel diameter were 14 and 89.5, ray thickness 41.4, fiber length 734.1, Runkel coefficient 136, dry density 0.75gr/cm3, basic density0. 64 gr/cm3, shrinkage and porosity 16.5 % and 49.2% percent, respectively. The results also indicated that orange wood properties were very fit and same the hard woods. The results also pointed out that the above-mentioned of orange wood properties can to replace some or full of the raw material for production pulp and paper, fiber board, particle board and another wood composition boards in the wood and paper industries. Manuscript profile
      • Open Access Article

        3 - Introducing a new effective technique in iris detection using iris image histogram
        Mostafa akhavansaffar
        Nowadays, biometric systems have received a lot of attention. Iris identification is one of the safest and most reliable biometric methods. Fast, reliable, and reliable algorithms are needed to implement these biometric systems in real-time. In this paper, a useful loca More
        Nowadays, biometric systems have received a lot of attention. Iris identification is one of the safest and most reliable biometric methods. Fast, reliable, and reliable algorithms are needed to implement these biometric systems in real-time. In this paper, a useful local technique for identifying the pupil and iris boundaries using the iris image histogram is presented. Two small iris sections have been used for symmetrical conversion to reduce computation time and increase system efficiency. Wavelet transform has been used to generate feature vectors. The system was tested on a hypothetical iris database we created. The results show that the proposed system increases efficiency. Manuscript profile
      • Open Access Article

        4 - Multimodal biometric system combining fingerprint and iris at decision level
        Fatemeh Keshavarzi Kaveh Pashaei Hossein Momenzadeh Haghighi
        Mono-modal biometric systems, by using only a biometric feature to determine the identity of individuals, we will face some problems such as noisy data, low distinction biometric feature, unacceptable error rates and spoofs attacks. But by using multi-modal biometric sy More
        Mono-modal biometric systems, by using only a biometric feature to determine the identity of individuals, we will face some problems such as noisy data, low distinction biometric feature, unacceptable error rates and spoofs attacks. But by using multi-modal biometric systems, we will largely overcome these problems and increase the performance and reliability of biometric identification even more, because these systems in comparison with mono-modal biometric systems have more accuracy and greater security. In this regard, this study combines two common and widely used biometric trait fingerprint and iris at the level of decision-making by using the fuzzy logic method. Therefore we have used CASIA database for iris and FVC2004 database for the fingerprint. Results of tests and studies indicate that the proposed combination of biometric systems has more precision and reliability than mono-modal biometric systems. In the fusion system, the error Type I (FAR) and Type II (FRR), respectively are 0.3% and 1.2%. Manuscript profile
      • Open Access Article

        5 - شناسایی مولکولی و مطالعه فیزیولوژیک و مورفولوژیک سیانوباکتری Nostoc sp. ISC101 تحت تیمارهای مختلف نفت خام
        فریبا امیرلطیفی ندا سلطانی سارا سعادتمند شادمان شکروی مهروز دزفولیان
      • Open Access Article

        6 - شناسایی مولکولی و مطالعه اثر کلرید سدیم بر پاسخ‌های فیزیولوژیک و مورفولوژیک سیانوباکتری Leptolyngbya sp. ISC25
        شقایق ایرانشاهی ندا سلطانی طاهر نژاد ستاری شادمان شکروی مهروز دزفولیان
      • Open Access Article

        7 - Robust Identification Based on Extracted Features With Visual Ventral Stream
        Zohreh Yaghoubi Morteza Eliasi Ardalan Eliasi
        Biometrics based personal identification is regarded as an effective method for automatic identification, with a high confidence coefficient. A multi modal biometric system consolidates the evidence presented by multiple biometric sources and typically provides better r More
        Biometrics based personal identification is regarded as an effective method for automatic identification, with a high confidence coefficient. A multi modal biometric system consolidates the evidence presented by multiple biometric sources and typically provides better recognition performance compared to systems based on a single biometric modality. So in this paper we use combination of Face, Palm print and Ear characteristic to individual’s authentication. In our approach, features extracted using HMAX model are translation and scale-invariant. Then we applied Support vector machine and K-nearest neighbor classifiers to distinguish the classes. In fusion stage we use matching-score level. Experimental results showed 96% accuracy rate on ORL Face database and 96/6% accuracy rate on POLYU Palm print database and 97% accuracy rate on USTB Ear database; however we achieve 100% accuracy rate on Face, Palm print and Ear multi modal biometric. Manuscript profile
      • Open Access Article

        8 - اثر چهار بافت و دو سطح پروتئین جیره غذایی بر عملکرد رشد و ابعاد بیومتری گوساله‌های هلشتاین
        ع. شاهورانی 1. سراج ک. جعفری خورشیدی
        این تحقیق برای ارزیابی اثرات بافت و سطوح مختلف پروتئین در جیره غذایی بر عملکرد رشد و ابعاد بیومتری گوساله‏های نر هولشتاین طی دوره آغازین (از سن 1 تا 60 روزگی) انجام شد. در این آزمایش، از 56 رأس گوساله‏ نر استفاده شد و به طور تصادفی در طرح آزمایشی فاکتوریل 2 &tim More
        این تحقیق برای ارزیابی اثرات بافت و سطوح مختلف پروتئین در جیره غذایی بر عملکرد رشد و ابعاد بیومتری گوساله‏های نر هولشتاین طی دوره آغازین (از سن 1 تا 60 روزگی) انجام شد. در این آزمایش، از 56 رأس گوساله‏ نر استفاده شد و به طور تصادفی در طرح آزمایشی فاکتوریل 2 × 4 با 4 سطح بافت جیره غذایی (آسیاب شده، آجیلی، پلت شده و دانه‏ای) و دو سطح پروتئین (22 و 24 درصد) در قالب طرح کاملاً تصادفی با 8 تیمار و 7 تکرار قرار داده شدند. صفات مورد اندازه‏گیری عبارت بودند از: افزایش وزن بدن، میانگین خوراک مصرفی روزانه، دمای بدن، ابعاد بیومتری (ارتفاع از جدوگاه، طول و عمق دوره سینه)، شاخص‏های خونی (گلوکز و بتا هیدروکسی بوتیرات)، امتیاز مدفوع و اسیدهای چرب شکمبه. نتایج نشان داد که میانگین مصرف خوراک، وزن بدن و غلظت گلوکز و بتاهیدروکسی‏بوتیرات در خون برای دو سطح پروتئین اختلافی نداشتند. امّا ساختار خوراک عمدتاً بر این صفات مؤثر بود. جیره‏ آجیلی سبب افزایش مصرف خوراک و وزن زنده شدند. جیره‏ آسیاب شده سبب افزایش تولید اسیدهای چرب فرّار درون شکمبه‏ گوساله‏ها شد. بافت جیره بر ابعاد بیومتری تأثیر داشت. جیره‏ دانه‏ای و آجیلی سبب افزایش ارتفاع بدن و دور سینه شدند. امتیاز مدفوع و تراکم اسیدهای چرب فرار با مصرف جیره‏های مختلف دارای تغییراتی بود ولی اختلاف معنی‏داری مشاهده نشد. در رابطه با دمای بدن، جیره‏های آجیلی و پلت شده‏ی حاوی 22 درصد پروتئین سبب افزایش دمای بدن شده و جیره‏ آسیاب شده سبب کاهش دمای بدن به میزان 25/0 درجه‏ سانتی‏گراد گردید و نشان داد که تغییر بافت جیره‏ غذایی ممکن است ابزار مفیدی برای کنترل استرس گرمایی باشد. یافته‏های این تحقیق نشان داد که مصرف جیره‏ استارتر آجیلی سبب افزایش مصرف خوراک و افزایش وزن معنی‌دار در مقایسه با بافت آسیاب شده، دانه‏ای و پلت شده گردید. پیشنهاد می‏گردد برای افزایش عملکرد رشد دوره‏ پرورش گوساله از آن استفاده شود. Manuscript profile
      • Open Access Article

        9 - اثرات عوامل غیر ژنتیکی و محیط دائمی مادری بر روی صفات بیومتریک در گوسفندان مغانی
        س. بخشعلی زاده م. غفاری ع. هاشمی ش. جعفری
        تحقیق حاضرآمار توصیفی صفات بیومتریک و عوامل غیر ژنتیکی مؤثر در تغییرات این صفات در گوسفندان مغانی را مورد مطالعه قرار داده است. مجموعه داده‌ مورد استفاده از رکوردهای بیومتریک ایستگاه پرورش و اصلاح نژاد گوسفند مغانی در یک دوره 15 ساله (1375 تا 1390) استخراج شد. سال تولد، More
        تحقیق حاضرآمار توصیفی صفات بیومتریک و عوامل غیر ژنتیکی مؤثر در تغییرات این صفات در گوسفندان مغانی را مورد مطالعه قرار داده است. مجموعه داده‌ مورد استفاده از رکوردهای بیومتریک ایستگاه پرورش و اصلاح نژاد گوسفند مغانی در یک دوره 15 ساله (1375 تا 1390) استخراج شد. سال تولد، ماه تولد، نوع تولد و جنس بره و محیط دائمی مادری به عنوان پارامترهای غیر ژنتیکی در نظر گرفته شدند. صفات بیومتریک مورد مطالعه عبارت بودند از: ارتفاع از جدوگاه (HW)، ارتفاع از کپل (HR)، طول بدن (BL)، دور سینه (HG) و دور ران (LC). میانگین حداقل مربعات (سانتیمتر) ± خطای اشتباه برای صفات ارتفاع از جدوگاه، ارتفاع از کپل، طول بدن، دور سینه و دور ران به ترتیب 1/4 ± 8/69، 2/4 ± 7/69، 6/4 ± 2/50، 2/8 ± 9/85 و 4/5 ± 0/29 بود. تمامی صفات به طور معنی‌داری تحت تأثیر اثرات ثابت سال تولد قرار گرفتند (05/0P<). جنس بره اثرات معنی‌داری بروی تمام صفات مورد مطالعه به جزء دور سینه داشت (001/0P<). تمامی صفات مورد مطالعه بطور معنی داری (001/0P<) تحت تأثیر نوع تولد و ماه تولد قرار گرفتند. محیط دائمی مادری به عنوان عامل غیر ژنتیکی اثر معنی‌داری بر روی صفات مورد مطالعه نداشت. نتایج حاصل از مطالعه‌ حاضر نشان داد که عوامل غیر ژنتیکی می‌توانند به عنوان یک منبع تغییر قابل توجه بر روی صفات بیومتریک در نظر گرفته شوند. بنابراین بهبود شرایط محیطی می‌تواند به عنوان عاملی در جهت بهبود صفات بیومتریک در گوسفند مغانی پیشنهاد شود. Manuscript profile
      • Open Access Article

        10 - The analysis of morphological acclimation of cyanobacterium Leptolyngbya sp. Isc25 to monochromatic red, green and blue light rays.
        Ehteram Deylami Taher Nejadsattari Younes Ghasemi Shadman Shokravi
        Background & Objectives: Due to pleomorphic feature of Cyanobacteria in different conditions, confirmation of their identification required several phytochemical, physiologic, molecular and genetic analysis after preliminary morphological analysis.  This study More
        Background & Objectives: Due to pleomorphic feature of Cyanobacteria in different conditions, confirmation of their identification required several phytochemical, physiologic, molecular and genetic analysis after preliminary morphological analysis.  This study is the first report in Iran in which was aimed to identify Cyanobacteria Leptolyngbya sp. Isc25 based on molecular approaches and to analyze their morphologic response to monochromatic red, green and blue light rays. Material & Methods: In order to investigate the morphologic responses of Leptolyngbya sp. Isc25, the purified isolate of this Cyanobacterium in BG11 media were exposed first to autotrophic conditions (white light) and then to to monochromatic red, green and blue light rays. The morphological responses, flock production, structural changes, biometry and situation of trichome of Leptolyngbya sp. were evaluated using light microscopy and scanning electron microscopy (SEM) at different time periods, daily,  weekly and monthly. Results: Based on the morphologic and biometric analysis of the samples using light and scanning electron microscopy, the morphology and growth factor of this Cyanobacteria was affected by different environmental factors, and the best adaptation is obtained in green and red lights in comparison to blue light. Leptolyngbya sp. produced special cells with red pigments in their wall in case of exposure to green and red lights, which confirmed the variability of this species. Conclusion: The results show that Leptolyngbya sp. has morphological diversity and response differently in each light condition. Manuscript profile
      • Open Access Article

        11 - Study ecological characteristics Valeriana sisymbriifolia in Yazd (Case study: Bahabad area)
        fatemeh sharajabian ali asghar mosleh arani zeynalabedin hosseini reza bagheri hengameh zandi
        Valeriana sisymbriifolia species is a kind of Valerianaceae which has been used as soothing nerves, eliminating insomnia from past until now. This study was conducted for recognizing some ecological characteristics, trying in order to farming, and preventing its destruc More
        Valeriana sisymbriifolia species is a kind of Valerianaceae which has been used as soothing nerves, eliminating insomnia from past until now. This study was conducted for recognizing some ecological characteristics, trying in order to farming, and preventing its destruction in the natural habitat. Habitat characteristics of this species such as climatology, soil characteristics, associated species, phenology and biometric characteristics of population were investigated in order to research. After collecting the species' seeds, the effects of different treatments on germination were investigated. The results indicate this species are distributed in height of 1850 meters above sea level in the northern slope of the Kam Kuiye mountains of Bahabad city of the Yazd province. The site's climate is cold and dry based on Dr. Karimi method. Moreover, soil characteristics' studies show that sandy loam texture ,non-saline, with neutral PH near alkaline, low organic material, 30-35% lime for growing of Valerian is suitable. According to this study regeneration of this species is done well and its vegetative growth time is from April to July. In this site, Juniperus, Amygdalus scoparia, Lonicera, Dionysia, Cotoneatster are seen, that indicate adequate moisture need and mountainous areas climate. The results also show that gibberellic acid and potassium nitrate and cooling treatments used in most concentrations did not have significant effect on increasing of seeds germination of this species compared to control. The results of this study can be used to develop this medicinal species in areas with similar ecological conditions for conserving and using of this species. Manuscript profile
      • Open Access Article

        12 - The Effect of Different Salinities on Biologic Performances of A. franciscana and Parthenogenetic Artemia in Laboratory Conditions
        شیوا قنبری سولماز حکیم زاده رضا حیدری رامین مناف فر
        Brain shrimp Artemia is a unique animal of arthropods which can live in waters with very high salinities. These sever conditions make some changes on biologic performances and physiologic responses of the animal. In present study survival, growth and cyst diameter of tw More
        Brain shrimp Artemia is a unique animal of arthropods which can live in waters with very high salinities. These sever conditions make some changes on biologic performances and physiologic responses of the animal. In present study survival, growth and cyst diameter of two parthenogenetic and bisexual Artemia in two salinities 120g.l-1 and 210g.l-1 were studied. In this regard, both strains of the Artemia were reared with Dunaliella tertiolecta algae where survival and growth was assessed by days 3, 7, 11, 15. The produced cysts after maturation (in one month) were collected daily and the diameters of cysts were measured. The results revealed decreasing on survival rate with increasing in the both types of Artemia by which A. franciscana showed high performance in 210g.l-1 comparing to parthenogenetic Artemia. The total length and cyst diameter analyses of both Artemia in laboratory conditions revealed these factors as almost independent ecologic factor which should be used for populations of species identification of Artemia with very caution. Manuscript profile
      • Open Access Article

        13 - The Biometrical comparison between three populations of Caspian bent-toed gecko, Cyrtopodion caspium, in northern parts of Iran
        ویدا حجتی افشین فقیری
        The Caspian bent-toed gecko, Cyrtopodion caspium, belonging to the family Gekkonidae; is nocturnal and its main habitats in Iran are along the Gorgan region of Mazandaran, from northern and eastern Khorasan, extending south to Sistan and west to Azerbaijan. In this stud More
        The Caspian bent-toed gecko, Cyrtopodion caspium, belonging to the family Gekkonidae; is nocturnal and its main habitats in Iran are along the Gorgan region of Mazandaran, from northern and eastern Khorasan, extending south to Sistan and west to Azerbaijan. In this study, which has been done in Moghan Steppe, Damghan and Sari populations; 48 specimens were collected at midnight by hand. Present study was conducted on the basis of morphologic, morphometric and meristic characters of subspecies Cyrtopodion caspium caspium. We show that Moghan population in Northwest of Iran is isolated from two other populations in northeast of Iran. Manuscript profile
      • Open Access Article

        14 - Biometric evaluation of the trunk region of Iranian Arab horse
        Fahimeh Pourjafari bahador shojaei hamid sharifi
        There are more than two hundred horse breeds in the world that have different body structure, color and specific abilities depending on the geographical and weather conditions of their region. The Arabian horse, which history goes back about5 thousand years ago, has pla More
        There are more than two hundred horse breeds in the world that have different body structure, color and specific abilities depending on the geographical and weather conditions of their region. The Arabian horse, which history goes back about5 thousand years ago, has played a key role in the life history of human. Since the size of trunk region of breeds are different, biometric indices could be used to identify different breeds of horses. The present study was designed to determine the biometric indices of different trunk region were evaluated in 30 Iranian Arab horses. In this study 13 characteristics of different trunk regions were evaluated in 30 Iranian Arab horses. These horses were at least 3 years old and were selected from Kerman horse corrals. Then the mean, standard deviation, coefficient of variation and confidence interval of the characteristics were calculated. The data were compared between male and female as well as between the age groups older and younger than 8 years old by independent t-test. The results of this study showed that the gluteal height and length of lateral aspects of pelvis had the lowest and highest coefficient of variation among the measured characteristics, respectively. In this research, the characteristics were compared in different age and sex groups. This comparison showed a significant difference in the gluteal height in two different sex and age groups and length of lateral aspects of pelvis in two different age. Manuscript profile