1,354,205 research outputs found
Hypoaspis surenai Joharchi & Shahedi 2016
No full text140. Hypoaspis surenai Joharchi & Shahedi, 2016: 107. Paratype females (ARS-20150304-1h, i), IRAN, TAFT, Coll. Alireza Shahedi. AVAILABLE.Published as part of Saboori, Alireza & Shirvani, Zeinab, 2021, A checklist of Acari type specimens deposited in the Jalal Afshar Zoological Museum, Karaj, Iran, pp. 289-311 in Zootaxa 4949 (2) on page 302, DOI: 10.11646/zootaxa.4949.2.4, http://zenodo.org/record/463640
Contribution of human oocyte architecture to success of in vitro maturation technology.
No full textThe use of ovarian stimulation for infertility treatment is associated with side effects of ovarian hyperstimulation syndrome (OHSS) and potential cancer risk. This is also true in high risk women such as those polycystic with ovary (PCO) and polycystic ovarian syndrome (PCOS). In vitro maturation (IVM) of oocytes was primarily developed to make IVF safe for women with PCO and at high risk of OHSS. The application of IVM of oocytes to assist clinical infertility treatment remains poor because of the reduced developmental competence of oocytes after IVM, despite several decades of research. Reduced meiotic maturation and fertilization rates, as well as low blastocyst production reveal short-term developmental insufficiency of oocytes when compared with in vivo-matured counterparts. In this review, the structural role of human oocytes, revealed by different technical approaches, to the success of IVM technology is highlighted
Vitrification of human immature oocytes before and after in vitro maturation: a review
No full textThe use of immature oocytes subjected to in vitro maturation (IVM) opens interesting perspectives for fertility preservation where ovarian reserves are damaged by pathologies or therapies, as in PCO/PCOS and cancer patients. Human oocyte cryopreservation may offer some advantages compared to embryo freezing, such as fertility preservation in women at risk of losing fertility due to oncological treatment or chronic disease, egg donation and postponing childbirth. It also eliminates religious and/or other ethical, legal, and moral concerns of embryo freezing. In addition, a successful oocyte cryopreservation program could eliminate the need for donor and recipient menstrual cycle synchronization. Recent advances in vitrification technology have markedly improved the oocyte survival rate after warming, with fertilization and implantation rates comparable with those of fresh oocytes. Healthy live births can be achieved from the combination of IVM and vitrification, even if vitrification of in vivo matured oocytes is still more effective. Recently, attention is given to highlight whether vitrification procedures are more successful when performed before or after IVM, on immature GV-stage oocytes, or on in vitro matured MII-stage oocytes. In this review, we emphasize that, even if there are no differences in survival rates between oocytes vitrified prior to or post-IVM, reduced maturation rates of immature oocytes vitrified prior to IVM can be, at least in part, explained by underlying ultrastructural and biomolecular alterations
Contribution of human oocyte architecture to success of in-vitro maturation technology
No full textThe use of ovarian stimulation for infertility treatment is associated with side effects
of ovarian hyperstimulation syndrome (OHSS) and potential cancer risk. This is also
true in high risk women such as those polycystic with ovary (PCO) and polycystic
ovarian syndrome (PCOS). In-vitro maturation (IVM) of oocytes was primarily
developed to make IVF safe for women with PCO and at high risk of OHSS. The
application of IVM of oocytes to assist clinical infertility treatment remains poor
because of the reduced developmental competence of oocytes after IVM, despite
several decades of research. Reduced meiotic maturation and fertilization rates, as
well as low blastocyst production reveal short-term developmental insufficiency of
oocytes when compared with in vivo-matured counterparts. In this review, the
structural role of human oocytes, revealed by different technical approaches, to the
success of IVM technology is highlighted
Properties of a new protein film from bitter vetch (Vicia ervilia) and effect of CaCl2 on its hydrophobicity
No full textThis work was aimed to investigate the potential preparation of an edible film from bitter vetch seed proteins. The film was cast from bitter vetch protein concentrate (BPC) and glycerol. CaCl2 at the ratio of 0.1–1% (w/w) of the BPC was tested to improve film properties, specially its hydrophobicity. Some physicochemical properties of the films obtained in the absence and presence of CaCl2 were evaluated. The results indicated that moisture content, total soluble matter, water vapour permeability and contact angle of the films prepared in the presence of CaCl2 were significantly modified in comparison with the control values, while their mechanical properties did not significantly change. The surface morphology of the films was also considerably affected by the presence of CaCl2. Therefore, CaCl2 could improve BPC-film barrier properties especially their hydrophobicity, even though calcium concentration seems to be a crucial factor
Safavid architecture as a historical precedent and design paradigm to the aesthetic of contemporary Iranian architecture / Bahram Shahedi
No full textThe architectural aesthetic design has been a powerful influence and a rich source of reference to the formation of novel ideas throughout the early stages of architectural history. The implementation of architectural aesthetic design by applying historical precedents has generated significant impact on the overall quality of the built environment. A notable historical architectural precedent known as the Isfahani style, during the era of Safavid Architecture is proposed in this doctoral study to possess highly attractive aesthetic values with respect to the current contemporary Iranian architecture, specifically Iranian architectural designs built in the last five decades. The main objective of this study was to investigate the architectural aesthetic design features experienced by the users and nonusers of the Safavid buildings. Additionally, to identify and validate the design criteria that make Safavid Architecture still highly useful and relevant in terms of how it expresses architectural aesthetic design features. Furthermore, the values and attributes used in the design processes found in today’s contemporary architectural phenomenon possess little evidence of a design approach that places importance on the architectural aesthetic experience. Hence, this research explored the historical precedent of Safavid Architecture by examining chosen historical buildings, using qualitative multiple case study techniques and by collecting data from multiple sources for each of the case studies. The sources included direct observational data collected through video and audio documentation of the cases being studied, semi-structured interviews with experts, and a perception study survey using questionnaires given to users and nonusers of the Safavid architectural buildings. The findings, obtained from experts’ interviews were used to validate the findings obtained from users and nonuser’ perceptions through cross checking and triangulation. Research findings and results were analyzed using quantitative and qualitative approaches. Data analysis included categorization of themes defined by a theoretical framework through content analysis of patterns and a systematic redefinition of categories after validation. The veracity of the research was improved by triangulating the data obtained from multiple sources. The findings suggested positive and favorable analysis results, lending proof to the premise of the study. Additionally, three chief themes were uncovered with its unique design values, attributes and approach, which could be used to form the basis of a historical, architectural precedent. The analyzed results highlight the importance of aesthetic design characteristics, which include systematic process, and design concept, interaction with spatial and physical context, identity, meaning, rationalism, structural honesty, minimalism, unity, pattern, ordering principle, and paradigm of design. In conclusion, the research provided a framework for a holistic theoretical explanation, summed up based on research findings related to the issue being researched.
Keywords: Historical architectural precedents, Safavid Architecture, Contemporary Iranian Architectur
Oribatula (Zygoribatula) connexa subsp. connexa connexa Berlese 1904
No full text<i>Oribatula</i> (<i>Zygoribatula</i>) <i>connexa connexa</i> Berlese, 1904 <p> <i>Sample code</i>: S8, S9, T11, T7.</p> <p> <i>Global distribution</i>: Mediterranean.</p> <p> <i>Distribution in Iran</i>: Yazd (Abarkouh), Hamadan, Khuzestan, Fars, Razavi Khorasan, East & West Azerbaijan, Mazandaran, Kerman, Zanjan, Alborz, Tehran, Golestan, Ardabil and Kermanshah provinces.</p>Published as part of <i>Akrami, Mohammad Ali & Shahedi, Alireza, 2020, Oribatid mites (Acari: Oribatida) of Taft county, Yazd province of Iran, with new records, pp. 141-160 in Persian Journal of Acarology 9 (2)</i> on page 152, DOI: 10.22073/pja.v9i2.58955, <a href="http://zenodo.org/record/4644976">http://zenodo.org/record/4644976</a>
Phthiracarus (Phthiracarus) lentulus
No full text<i>Phthiracarus</i> (<i>Phthiracarus</i>) <i>lentulus</i> (Koch, 1841) <p> <i>Sample code</i>: D25, T24, A8, D6, T28, D26, D11, T1, A6</p> <p> <i>Global distribution</i>: Holarctic (Palearctic and Neartic), Ethiopian (Angola and Madagascar) and southeastern China.</p> <p> <i>Distribution in Iran</i>: Yazd (Abarkouh), Fars, East & West Azerbaijan, Mazandaran, Guilan, Kerman, Zanjan and Esfahan provinces.</p>Published as part of <i>Akrami, Mohammad Ali & Shahedi, Alireza, 2020, Oribatid mites (Acari: Oribatida) of Taft county, Yazd province of Iran, with new records, pp. 141-160 in Persian Journal of Acarology 9 (2)</i> on page 146, DOI: 10.22073/pja.v9i2.58955, <a href="http://zenodo.org/record/4644976">http://zenodo.org/record/4644976</a>
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Development of a qualified nodalization for small-break LOCA transient analysis in PSB-VVER integral test facility by RELAP5 system code
No full textThis paper deals with development and qualification of a nodalization for modeling of the PSB-VVER
integral test facility (ITF) by RELAP5/MOD3.2 code and prediction of its primary and secondary systems
behaviors at steady state and transient conditions. The PSB-VVER is a full-height, 1/300 volume and
power scale representation of a VVER-1000 NPP. A RELAP5 nodalization has been developed for PSBVVER
modeling and a nodalization qualification process has been applied for the developed nodalization
at steady state and transient levels and a qualified nodalization has been proposed for modeling of the PSB
ITF. The 11% small-break loss-of-coolant-accident (SBLOCA), i.e. rupture of one of the hydroaccumulators
(HA) injection lines in the upper plenum (UP) region of reactor pressure vessel (RPV) below the hot legs
(HL), inlets has been considered for nodalization qualification process. The influence of the different steam
generator (SG) nodalizations on the RELAP5 results and on the nodalization qualification process has
been examined. The “steady state” qualification level includes checking the correctness of the initial and
boundary conditions and geometrical fidelity. In the “transient” qualification level, the time dependent
results of the code calculation are compared with the experimental time trends from both the qualitative
and quantitative point of view. For quantitative assessment of the results, a Fast Fourier Transform Based
Method (FFTBM) has been used. The FFTBM was used to establish a range in which the steam generators
nodalizations can vary
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