112 research outputs found

    Developing LBGTGEQIAP+ Allies for Action: A Developmental Counselor Training Model

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    The authors present a model for helping students and supervisees to move beyond competence and toward action-based advocacy utilizing the MSJCC (AMCD, 2015) and extant literature in counselor and ally development. Four developmental stages are posited based on the MSJCC domains, and various strategies for teaching competencies at each level are provided

    Transcriptome Profiling of Testis during Sexual Maturation Stages in Eriocheir sinensis Using Illumina Sequencing

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    The testis is a highly specialized tissue that plays dual roles in ensuring fertility by producing spermatozoa and hormones. Spermatogenesis is a complex process, resulting in the production of mature sperm from primordial germ cells. Significant structural and biochemical changes take place in the seminiferous epithelium of the adult testis during spermatogenesis. The gene expression pattern of testis in Chinese mitten crab (Eriocheir sinensis) has not been extensively studied, and limited genetic research has been performed on this species. The advent of high-throughput sequencing technologies enables the generation of genomic resources within a short period of time and at minimal cost. In the present study, we performed de novo transcriptome sequencing to produce a comprehensive transcript dataset for testis of E. sinensis. In two runs, we produced 25,698,778 sequencing reads corresponding with 2.31 Gb total nucleotides. These reads were assembled into 342,753 contigs or 141,861 scaffold sequences, which identified 96,311 unigenes. Based on similarity searches with known proteins, 39,995 unigenes were annotated based on having a Blast hit in the non-redundant database or ESTscan results with a cut-off E-value above 10−5. This is the first report of a mitten crab transcriptome using high-throughput sequencing technology, and all these testes transcripts can help us understand the molecular mechanisms involved in spermatogenesis and testis maturation

    Influence of Process Parameters on the Thermophysical Properties of C/C-SiC

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    Ceramic matrix composites (CMCs) with low porosity are obtained via the well estab-lished Liquid Silicon Infiltration Process (LSI), which is characterized by short processing times and fairly low manufacturing costs [1]. The key step is the infiltration of liquid silicon in porous car-bon/carbon composites (C/C) whose distinct microstructure is built in the pre-ceding py-rolysis step of carbon fiber reinforced plastics (CFRP). Those were produced by resin trans-fer molding (RTM) in a first step. This process leads to C/C-SiC composites being character-ized by high mass-specific proper-ties in combination with an extreme thermal shock stabil-ity. Besides aerospace applications, such as hot structures for reentry vehicles, more and more applications beyond this classic field of CMCs are of increasing interest, e.g. brake discs, zero expansion materials, high temperature heat exchangers, etc. By applying special process pa-rameters the microstructure as well as the physical properties can be tailor-designed to match specific re-quirements. The thermal conductivity of C-fibers and thus of a C/C-SiC composite is con-siderably increased with pyrolysis and graphitization temperature as known from C/C-com-posites [2,3]. This paper reports upon the influence of various C-fibers, precursors and annealing process parameters of C/C as well as the microstructure, obtained by pre-treating C-fibers, on the thermophysical properties of C/C-SiC. Therefore, C-fabrics were used as received or ther-mally pretreated and submitted to LSI-processing. Another route is to graphitize the C/C in-termediate with subsequent sili-conizing [4,5]. Due to the fact that the thermal conductivity (TC) of carbon fibers after graphitization can be higher than that of SiC the dominating con-tribution to the TC of the composite is expected from the fibers. Because of the pronounced orientation of the fibers in one plane there is a strong anisotropy of the TC parallel and trans-versal to main fiber orien-tation, whereby the values parallel to the fibers are by a factor 2 to 3 higher compared to transversal direction [6]. In this paper, only the results of measurements in transversal direc-tion are presented

    Mathematical principles of multicomponent analysis

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    Microscopic thermal characterization of C/C-SiC composites

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    The C/C-SiC composites are made of several micro-components, whose properties are often not characterized precisely. Such a lack of knowledge makes difficult the use of multi-scale numerical simulations that require reliable microscopic data to estimate the influence of individual micro-parameters on the composite macroscopic properties. Because of the small volume of matter to be characterized, conventional methods are generally unpractical and modulated photothermal techniques, which operate without any contact at scales ranging from micrometers to millimeters, are the only convenient techniques

    Numerical evaluation of enzyme analyses

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