نتایج جستجو برای: buffer zone

تعداد نتایج: 152622  

Journal: :Journal of the National Science Foundation of Sri Lanka 2003

AR Shafaati BJ Clark

Two Capillary Zone electrophoresis (CZE) methods were developed in this study, one using an acidic buffer (sodium citrate pH = 2.5) and the other using a basic buffer (sodium tetraborate pH = 9.8). The two methods were compared on the basis of repeatability and reproducibility of results and the CZE method developed with the basic buffer was then selected for further studies. The method was ful...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2006
Guo-Ni Fu You-Zhao He Lei Wang Xiao-Kui Wang

A fast, convenient and sensitive method of capillary zone electrophoresis (CZE) and indirect UV detection was proposed for the determination of 16 amino acids. p-Aminobenzoic acid (PAB) was selected as a background electrolyte (BGE). An isolated cell included a BGE buffer part and an electrode buffer one, which were jointed with a glass frit. The isolated cell can prevent PAB from the electrode...

2003
Steven C. Chan Kenneth L. Shepard Phillip Restle

This paper presents a new approach to global clock distribution in which traditional tree-driven grids are augmented with onchip inductors to resonate the clock capacitance at the fundamental frequency of the clock node. Rather than being dissipated as heat, the energy of the fundamental resonates between electric and magnetic forms. The clock drivers must only provide the energy necessary to o...

2015
Dennis Collentine Holger Johnsson Peter Larsson Hampus Markensten Kristian Persson

Riparian buffer zones are the only measure which has been used extensively in Sweden to reduce phosphorus losses from agricultural land. This paper describes how the FyrisSKZ web tool can be used to evaluate allocation scenarios using data from the Svärta River, an agricultural catchment located in central Sweden. Three scenarios are evaluated: a baseline, a uniform 6-m-wide buffer zone in each...

Journal: :Analytica chimica acta 2006
Wa Lok Jacky Chou Paul C H Li

Acoustic wave detection of various underivatized amino acids that were hydrodynamically introduced into and electrokinetically migrated along a capillary tube has been achieved. The detection principle is based on the measurement of the ultrasonic absorption and density change of the aqueous amino acid samples as they pass by the detection zone. Acoustic wave detection of underivatized leucine ...

2015
Li-Ju Chen Shih-Wen Hu Jiandong Wen Chusheng Ye

a r t i c l e i n f o A good harvest usually leads to a collapse of agricultural prices since the price elasticity of agricultural products is relatively low. To stabilize the market and protect farmers, many countries have introduced a target zone policy, together with product purchasing or price subsidy strategies. This article analyzes the effect of a target zone with different strategies op...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1390

مطالعه 148 نمونه از سازند سروک در برش تنگ چنارباشی در جنوب شرق شهرستان ایلام واقع در مرکز استان ایلام از جهت سنگ چینه نگاری، سیستماتیک، زیست چینه نگاری (بر اساس فرامینیفرا و الیگوستژینید) و چینه نگاری سکانسی بر اساس (hunt&tucker, 1992 ; 1995) انجام شد. با مطالعه سنگ چینه نگاری مشخص شد که در این مطالعه مرز زیرین سازند سروک با شیل آهکی و میان لایه سنگ آهک سازند گرو پیوسته و با سنگ آهک های رسی س...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2007
John A Crawford Raymond D Semlitsch

Many species of wildlife depend on riparian habitats for various life-history functions (e.g., breeding, foraging, overwintering). Although this unique habitat is critical for many species, delineations of riparian zones and buffers for various taxa are lacking. Typically when buffer zones are determined to mitigate edge effects, they are based on criteria that protect aquatic resources alone a...

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