Researchers at the Naval Research Laboratory (NRL) have been developing a formal method, known as the SCR (Software Cost Reduction) method, to specify the requirements of software systems using tables. NRL has developed a formal state machine model de ning the SCR semantics and support tools for analysis and validation. Recently, a veri cation capability was added to the SCR toolset. Users can ...

The removals of NOx by catalytic technology at low temperatures (100–300 °C) for industrial flue gas treatment have received increasing attention. However, the development of low temperature catalysts for selective catalytic reduction (SCR) of NOx with ammonia is still a challenge especially in the presence of SO2. The current status of using Mn-based catalysts for low temperature SCR of NOx wi...

The normal expression of the homeotic gene Sex combs reduced (Scr) is initially restricted to parasegment 2, later extends to 3, and by germ band retraction extends further to part of parasegment 4 (T1p). We find that in the absence of the bithorax complex (BX-C) genes there is Scr expression in the epidermis of the posterior compartments of the thoracic and abdominal parasegments. This ectopic...

In Drosophila, the Deformed (Dfd) and Sex combs reduced (Scr) genes determined the developmental pathways followed by the most anterior metameric units. Using in situ hybridization, we have monitored the spatial distributions of transcripts from these two genes. Dfd RNA accumulates in parasegments 0 and 1; Scr RNA accumulation shows a dynamic pattern spanning parasegments 2 and 3. The expressio...

A 0.5 wt.% Pt/TiO2 catalyst was prepared and used for the low-temperature selective catalytic reduction (SCR) of NO with C3H6 in the presence of excess oxygen. The effects of Pt loading and O2 concentration on Pt/TiO2 catalytic performance for low-temperature SCR were investigated. It was found that optimal Pt loading was 0.5 wt.% and excess O2 favored low-temperature SCR of NOx. The mechanism ...

Pulse IV methylprednisolone therapy is the intermittent administration of supraphysiological quantities of the drug to enhance its therapeutic effects while reducing its toxic effects.1 A typical pulse regimen ranges from 500 to 1000 mg IV daily for 2–4 consecutive days.1,2 It has been suggested that methylprednisolone may cause an acute increase in serum creatinine (SCr), which can be misinter...

سابقه و هدف: هزینه مبادله که برخاسته از اقتصاد نهادگرا است، با مفهوم کارایی مرتبط است. یکی وظایف برنامه‌ریزان، افزایش فرایند برنامه‌ریزی به همین دلیل شناسایی عوامل مؤثر بر همچون هزینه‌های جست‌وجوی اطلاعات، مذاکره، ایجاد اعمال ساز­و­کارهای نظارتی حائز اهمیت زیرا این طریق است برنامه‌ریزان می‌توانند تکیه طراحی نهادی ساختارهای حکمرانی، را کاهش دهند. طرح تفصیلی در نظام ایران، برنامه‌ای بازیگران متعد...

Most patients are discharged early (within 24 hours) after coronary angiography (CAG) and may miss identification the late (24-48 hours) increase in serum creatinine (SCr), whose characteristics and prognosis have been less intensively investigated.We prospectively recruited 3065 consecutive patients with SCr measurement, including only1344 patients with twice SCr measurement (both early and la...