نتایج جستجو برای: سوپرآلیاژ پایه نیکل gtd
تعداد نتایج: 56821 فیلتر نتایج به سال:
هدف از این پژوهش، تحقیق اثر عملیات همگنسازی بر ریزساختار ریختگی و سختی سوپرآلیاژ پلیکریستال GTD111 است. انجام عملیات همگن سازی در شرایط بهینه، پارامتری تأثیرگذار بر انجام صحیح عملیات حرارتی آنیل جزئی و پیرسازی آلیاژ است. این سوپرآلیاژ به روش ذوب القایی تحت خلاء ریختهگری شد و سپس در دمای 1200 و 1220 درجه سانتیگراد و زمانهای مختلف تحت عملیات همگنسازی قرار گرفت. بررسیهای ریزساختاری شامل برر...
هدف از انجام این تحقیق بررسی اثرات لایه گذاری بر روی سوپرآلیاژ in738lc و یافتن پوشش مناسب برای محیط هایی با دمای بالا و شرایط اسیدی و اکسیدی است که این سوپرآلیاژ در آن شرایط به کار می رود. برای این منظور دو نوع پوشش آلومینیوم فلزی و اکسید زیرکونیوم، انتخاب شد. این پوشش ها به روش های کندوپاش، تبخیر حرارتی در خلاء، تبخیر با استفاده از باریکه ی الکترونی و پلاسما اسپری بر روی سوپرآلیاژ با ضخامت های...
Gestational trophoblastic disease (GTD) is characterized by abnormal proliferation of pregnancy-associated trophoblastic tissue with malignant potential. GTD covers a spectrum of tumors and tumor-like conditions and may occur in a benign form as hydatiform mole or as malignancy in the form of invasive mole or choriocarcinoma. GTD has become a curable malignant disease since the introduction of ...
BACKGROUND geno2pheno[coreceptor] is a bioinformatic method for genotypic tropism determination (GTD) which has been extensively validated. OBJECTIVES GTD can be affected by sequencing/base-calling variability and unreliable representation of minority populations in Sanger bulk sequencing. This study aims at quantifying the robustness of geno2pheno[coreceptor] with respect to these issues. GT...
Gestational trophoblastic diseases (GTD) are a group of pregnancy-related disorders representing rare human tumours. They encompass premalignant disorders including complete (CHM), partial hydatidiform mole (PHM), exaggerated placental site (EPS), and placental-site nodule (PSN) as well as malignant disorders (also known as “gestational trophoblastic neoplasia [GTN]”) including invasive mole, c...
Objective. Gestational Trophoblastic Disease (GTD) management requires clear guidelines for diagnosis, treatment, and follow-up. Unequal management skills among practitioners, inadequate treatment, irregular surveillance, and drop-out are common in resource-limited settings and can lead to life-threatening complications and morbidities. To address these challenges, we implemented a GTD Manageme...
Rab GTPases recruit myosin motors to endocytic compartments, which in turn are required for their motility. However, no Ypt/Rab GTPase has been shown to regulate the motility of exocytic compartments. In yeast, the Ypt31/32 functional pair is required for the formation of trans-Golgi vesicles. The myosin V motor Myo2 attaches to these vesicles through its globular-tail domain (GTD) and mediates...
Gestational trophoblastic disease is a spectrum of placental disorders ranging from benign molar pregnancies to the neoplastic conditions such as invasive mole and choriocarcinoma. These patients are identified early due to markedly elevated hCG levels and characteristic ultrasound findings. Uterine evacuation is the recommended treatment, while chemotherapy can be reserved for patients with re...
BACKGROUND Although the morphological features characteristic of products of conception specimens including molar pregnancies are well described, substantial histopathological similarities are observed between the different entities, especially in cases of early pregnancies. Furthermore, there are no current solid criteria that could predict cases with progression to persistent gestational trop...
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