نتایج جستجو برای: weiyuan paleo oil pool

تعداد نتایج: 187465  

Journal: :Eastern European Economics 2022

Using data on 17 listed public banks from Russia over the period 2008 to 2016, we analyze whether international oil prices affect bank stability in an oil-dependent country. We resort a Pool Mean Group (PMG) estimator, and show that increase has long-run positive effect Russian stability. While oil-price shocks contribute long run, opposite is recorded for negative shocks. However, no significa...

ژورنال: :پژوهش های دانش زمین 0
مهران مقصودی دانشگاه تهران سید محمد زمان زاده دانشگاه تهران افسانه اهدائی دانشگاه تهران روح الله یوسفی زشک دانشگاه آزاد اسلامی واحد ورامین- پیشوا مجتبی یمانی دانشگاه تهران

ویژگی های محیط طبیعی، مهمترین عامل در جهت شکل گیری سکونت گاه های انسانی خصوصاً در ادوار باستانی می باشد و بهترین راه درجهت پی بردن به ویژگی های طبیعی سکونت گاه های باستانی در زمان برپایی آنها، بررسی های زمین باستان شناسی است. هدف از این پژوهش، بررسی نقش عوامل محیطی در مکان گزینی تپه باستانی چالتاسیان بوده است. این تپه باستانی، در دشت ورامین و در قسمت-های میانی مخروط افکنه جاجرود، واقع شده است. ا...

Journal: :The Nansen Legacy Report Series 2020

2014
Kai Ziervogel Nigel D'souza Julia Sweet Beizhan Yan Uta Passow

We conducted a series of roller tank incubations with surface seawater from the Green Canyon oil reservoir, northern Gulf of Mexico, amended with either a natural oil slick (GCS-oil) or pristine oil. The goal was to test whether bacterial activities of natural surface water communities facilitate the formation of oil-rich marine snow (oil snow). Although oil snow did not form during any of our ...

Journal: :Biochemical Society transactions 2000
L M Hill S Rawsthorne

The aim of this work was to find out how the sugars in the endosperm of oilseed rape contribute to the flux of oil synthesis. While the hexose content of the liquid endosperm decreased during development the sucrose content increased. It is important to understand the relative rates of use of the endosperm sugars for two reasons. Firstly we need to know which sugars are used, and at what stages...

Journal: :Journal of visualized experiments : JoVE 2013
Diana Klingler Markus Hardt

Stable isotopes are essential tools in biological mass spectrometry. Historically, (18)O-stable isotopes have been extensively used to study the catalytic mechanisms of proteolytic enzymes(1-3). With the advent of mass spectrometry-based proteomics, the enzymatically-catalyzed incorporation of (18)O-atoms from stable isotopically enriched water has become a popular method to quantitatively comp...

Journal: :FEMS microbiology ecology 2005
Birte Gerdes Robin Brinkmeyer Gerhard Dieckmann Elisabeth Helmke

The danger of a petroleum hydrocarbon spillage in the polar, ice-covered regions is increasing due to oil exploration in Arctic offshore areas and a growing interest in using the Northern Sea Route (NSR) as an alternative transportation route for Arctic oil and gas. However, little is known about the potential impact of accidental oil spills on this environment. We investigated the impact of cr...

2016
Yong Nie Jie-Yu Zhao Yue-Qin Tang Peng Guo Yunfeng Yang Xiao-Lei Wu Fangqing Zhao

Oil reservoirs exhibit extreme environmental conditions such as high salinity and high temperature. Insights into microbial community assemblages in oil reservoirs and their functional potentials are important for understanding biogeochemical cycles in the subterranean biosphere. In this study, we performed shotgun metagenomic sequencing of crude oil samples from two geographically distant oil ...

Journal: :Public Health Nutrition 2007

Journal: :Current Biology 2013

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