نتایج جستجو برای: ماده RPP

تعداد نتایج: 35589  

ژورنال: :پژوهش و توسعه جنگل 0
فاطمه موسوی دانشکده منابع طبیعی، دانشگاه تهران احسان عبدی دانشکده منابع طبیعی، دانشگاه تهران

بیشتر خاک ­های جنگلی دارای بافت ریز بوده و خمیرایی زیاد دارند، بنابراین دارای قابلیت تورم­ پذیری بسیار بالایی هستند. قابلیت تغییر حجم زیاد ناشی از نوسانات رطوبت این خاک­ها، به عنوان پدیده­ ای زیان­بخش در ساخت جاده ­های جنگلی محسوب می ­شود. در این پژوهش، از ماده پلیمری road packer plus (rpp)به­ عنوان گزینه­ ای جدید به جای استفاده از مواد تثبیت کننده متعارف، جهت بهبود خواص تورمی خاک ریزدانه رسی ا...

2015
Hye Won Lee Hwang Gyun Jeon Byong Chang Jeong Seong Il Seo Seong Soo Jeon Hyun Moo Lee Han Yong Choi

The aim of this study was to investigate a single-institution experience with radical perineal prostatectomy (RPP), radical retropubic prostatectomy (RRP) and minimally invasive radical prostatectomy (MIRP) with respect to onco-surgical outcomes in patients with intermediate-risk (IR; PSA 10-20 ng/mL, biopsy Gleason score bGS 7 or cT2b-2c) and high-risk (HR; PSA > 20 ng/mL, bGS ≥ 8, or ≥ cT3) p...

Journal: :American journal of physiology. Renal physiology 2009
K L Siu J M Ahn K H Chon

In this paper, we describe our design for a new electrohydraulic (EH) pump-driven renal perfusion pressure (RPP)-regulatory system capable of implementing precise and rapid RPP regulation in experimental animals. Without this automated system, RPP is manually controlled via a blood pressure clamp, and the imprecision in this method leads to compromised RPP data. This motivated us to develop an ...

Journal: :Hypertension 2009
Aaron J Polichnowski Allen W Cowley

The susceptibility to renal perfusion pressure (RPP)-induced renal injury was investigated in angiotensin II (Ang II)- versus norepinephrine (NE)-infused hypertensive rats. To determine the magnitude of RPP-induced injury, Sprague-Dawley rats fed a 4% salt diet were instrumented with a servocontrolled aortic balloon occluder positioned between the renal arteries to maintain RPP to the left kidn...

2009
Aaron J. Polichnowski Allen W. Cowley

The susceptibility to renal perfusion pressure (RPP)–induced renal injury was investigated in angiotensin II (Ang II)– versus norepinephrine (NE)-infused hypertensive rats. To determine the magnitude of RPP-induced injury, Sprague-Dawley rats fed a 4% salt diet were instrumented with a servocontrolled aortic balloon occluder positioned between the renal arteries to maintain RPP to the left kidn...

2015
Prema Sembulingam Saraswathi Ilango

Rate Pressure Product (RPP) is a valuable marker of cardiac function.It is the product of heart rate (HR) and systolic blood pressure (SBP) (HR x SBP/1000). RPP up to 12 at rest and up to 22 in stressed conditions is considered as normal. This study deals with RPP evaluation in60 young normal subjects of 18 to 22 years old (30 males and 30 females).HR and SBP were recorded before and after 5 mi...

ژورنال: جنگل ایران 2016

به‌طور کلی مصالح روسازی عمدتا از بستر رودخانه‌ها یا معادن داخل جنگل برداشت می‌شود که باعث تخریب محیط زیست و تاثیر منفی بر زیستگاه آبزیان و جانوران و از دست رفتن رویشگاه‌ها می‌شود. امروزه استفاده از روش‌های جایگزین برای تثبیت و تامین مصالح مناسب و در عین حال کاهش هزینه اقتصادی و زیست محیطی، به عنوان مسئله‌ای مهم مطرح شده است. در این پژوهش ماده Road Packer Plus به عنوان تیمار برای بهبود خواص مکان...

2017
Qingyu Ma Yan Guo Liping Sun Yongliang Zhuang

Recent studies have shown that rambutan peel phenolic (RPP) extract demonstrate high antioxidant and antiglycation activities in vitro and in vivo. This study further evaluated the anti-diabetic activity of RPP in a mouse model of Type II diabetes induced by streptozotocin combined with high-fat diet. Results showed that RPP increased the body weight and reduced the fasting blood glucose level ...

Journal: :Circulation 2001
A Butkevich R A Phillips

Independent Antihypertensive Effect? To the Editor: In a recent issue of Circulation, Nafz and colleagues1 described the antihypertensive effects of oscillations of renal perfusion pressure (RPP) in conscious dogs. One of the key findings in that article was that plasma renin activity increased in response to a decrease in the mean RPP to 85 mm Hg; this increase was significantly reduced by 0.1...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2008
Min Xia Pin-Lan Li Ningjun Li

The present study was designed to take advantage of telemetry data acquisition and develop an easy and reliable system to servocontrol renal perfusion pressure (RPP). Digitized pressure signals from lower abdominal aorta in rats, reflecting RPP, was obtained by a telemetry device and dynamically exported into an Excel worksheet. A computer program (LabVIEW) compared the RPP data with a preselec...

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