نتایج جستجو برای: cold egr

تعداد نتایج: 107396  

Journal: :American journal of physiology. Gastrointestinal and liver physiology 2006
Tetyana Khomenko Sandor Szabo Xiaoming Deng Martin R Jadus Hideki Ishikawa Klara Osapay Zsuzsa Sandor Longchuan Chen

Previously, we demonstrated that cysteamine releases endothelin-1 in the rat duodenal mucosa, followed by increased expression of early growth response factor-1 (egr-1). We hypothesized that egr-1 is a key mediator gene in the multifactorial mechanisms of duodenal ulcer development and healing because its protein, transcription factor product Egr-1, regulates the expression of angiogenic growth...

Journal: :Journal of engineering for gas turbines and power 2021

Abstract This work evaluated the effect of cooled exhaust gas recirculation (EGR) on fuel consumption and pollutant emissions from a diesel engine fueled with B8 (a blend biodiesel no. 8:92% by volume), experimentally numerically. Experiments were carried out power generator varying loads 5 kW to 35 10% cold EGR ratio. Exhaust (e.g., total hydrocarbons (THCs), nitrogen oxides (NOx), carbon mono...

ژورنال: :تحقیقات موتور 0
پرویز سلطانی parviz soltani iranایران حسین حاجی آقا علیزاده hossien haji agha alizadeh iranایران حسن پوروثوقی گرگری hassan poorvousooghi gargari iranایران حمیده فریدی hamideh faridi iranایران

آلاینده های خودرو یکی از عوامل اصلی آسیب های زیست محیطی است. موتورهای خودرو تولید کننده ی دی اکسید کربن (co2)، هیدروکربن (hc)، اکسیدهای نیتروژن (nox) و بسیاری دیگر از مواد مضر هستند. یک بررسی با استفاده از موتور اشتعال تراکمی راه اندازی شده با نسبت های مختلف دیزل و بیودیزل به همراه نرخ مختلف egr انجام شد. تاثیر نسبت های مختلف مخلوط سوختی و نرخ egr بر مشخصات آلاینده هایی مثل هیدروکربن های نسوخته...

2010
Jun-ichi Suehiro Takao Hamakubo Tatsuhiko Kodama William C. Aird Takashi Minami

Endothelial cell activation and dysfunction underlie many vascular disorders, including atherosclerosis, tumor growth, and sepsis. Endothelial cell activation, in turn, is mediated primarily at the level of gene transcription. Here, we show that in response to several activation agonists, including vascular endothelial growth factor (VEGF), tumor necrosis factor, and thrombin, endothelial cells...

2013
S. C. Hsia L. P. Graham G. R. Bedadala M. B. Balish F. Chen R. W. Figliozzi

AIMS To understand the mechanisms of Early Growth Response Protein 1 (Egr-1) induction upon HSV-1 lytic infection and its roles in regulating viral gene expression and replication. STUDY DESIGN Rabbit corneal cell line SIRC and other cell lines were infected by HSV-1 to investigate the Egr-1 induction and its occupancy on the viral genome in different conditions. UV-inactivated HSV-1 and a re...

A. Arjangnia, A. Sharifzadeh, M. Ghazikhani, M. Sharifzadeh,

In this study a heat exchanger is designed for cooling exhaust gas and an experiment is carried out to investigate the effect of Exhaust Gas Recirculation (EGR) temperature on destruction of the fuel’s availability due to combustion processes in IDI diesel engine cylinder. To serve this aim an exergy analysis is conducted on the engine cylinder which provides all the availability terms by which...

ژورنال: سوخت و احتراق 2018

در این پژوهش تاثیر بار و سرعت موتور و همچنین نسبت EGR و نسبت سوخت بیودیزل بر متغیرهای عملکردی و آلاینده‌‌های یک موتور دیزل تک سیلندر چهار زمانه بررسی گردید. همچنین با استفاده از روش بهینه سازی سطح پاسخ (RSM)، عوامل در نظر گرفته شده، بهینه سازی گردید. با استفاده از سامانه EGR، آلاینده 〖"NO" 〗_"x" کاهش یافت به گونه‌‌ای که بالاترین مقدار کاهش آلاینده 〖"NO" 〗_"x" برابر با 7/63 درصد و برای سوخت B10 ...

Journal: :Journal of immunology 2006
Randy Q Cron Rupa Bandyopadhyay Anna Genin Michael Brunner Gilbert J Kersh Jiyi Yin Terri H Finkel Mary K Crow

CD154 (CD40 ligand) expression on CD4 T cells is normally tightly controlled, but abnormal or dysregulated expression of CD154 has been well documented in autoimmune diseases, such as systemic lupus erythematosus. Beyond regulation by NFAT proteins, little is known about the transcriptional activation of the CD154 promoter. We identified a species-conserved purine-rich sequence located adjacent...

2017
Bao-Le Zhang Ting-Wen Guo Le-Le Gao Guang-Quan Ji Xiao-He Gu Yu-Qi Shao Rui-Qin Yao Dian-Shuai Gao

The specific mechanisms for epigenetic regulation of gene transcription remain to be elucidated. We previously demonstrated that hyperacetylation of histone H3K9 in promoter II of glioma cells promotes high transcription of the glial cell line-derived neurotrophic factor (GDNF) gene. This hyperacetylation significantly enhanced Egr-1 binding and increased the recruitment of RNA polymerase II (R...

Journal: :Circulation research 2004
Evis Harja Loredana G Bucciarelli Yan Lu David M Stern Yu Shan Zou Ann Marie Schmidt Shi-Fang Yan

Early growth response-1 (Egr-1) regulates expression of proinflammatory and procoagulant genes in acute cell stress. Experimental evidence suggested that Egr-1 transcripts were upregulated in human atherosclerotic plaques versus adjacent unaffected tissue. To test the impact of Egr-1 in chronic vascular stress, we examined its role in a murine model of atherosclerosis. Real-time PCR analysis of...

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