While researchers have extensively studied the initial decomposition mechanism of Monomethylhydrazine (MMH, CH3NHNH2) in MMH/dinitrogen tetroxide (NTO) system, investigation Unsymmetrical Dimethylhydrazine (UDMH, (CH3)2NNH2) has been limited due to its high toxicity, corrosiveness, and deterioration rate. Hence, effects UDMH’s products on combustion performance gas-phase reaction mechanisms rem...

This paper introduces two new ideas in the construction of fast universal hash functions geared towards the task of message authen-tication. First, we describe a simple but novel family of universal hash functions that is more eecient than many standard constructions. We compare our hash functions to the MMH family studied by Halevi and Krawczyk 12]. All the main techniques used to optimize MMH...

OBJECTIVE To evaluate the short-term outcomes of hemorrhoidectomy performed using the LigaSure vessel sealing device (Valleylab, Boulder, Colorado) or the conventional approach. DATA SOURCES MEDLINE, EMBASE, Ovid, and Cochrane databases for studies published between 2002 and 2006. STUDY SELECTION Randomized controlled trials published between 2002 and 2006 comparing short-term outcomes for ...

Hash based search has, proven excellence on large data warehouses stored in column store. Data distribution has significant impact on hash based search. To reduce impact of data distribution, we have proposed Memory Managed Hash (MMH) algorithm that uses shift XOR group for Queries and Transactions in column store. Our experiments show that MMH improves read and write throughput by 22% for TPC-...

Introduction: there is no consensus on the ideal anesthesia for hemorrhoidectomy in ambulatory facilities. spinal anesthesia and venous propofol associated with local perianal block (combined anesthesia) are frequently used, and their direct costs may be crucial for the anesthesia type selection. the objective of this study was to compare the direct costs of anesthesia-related materials in hemo...

Background: Stapled Hemorroidectomy is more popular alternative, has higher safety profile, and quickly established than the open procedure. Objective:The study aimed to compare between early post-operative outcomes of haemorrhoidectomy stapled. Methods:A total 50 patients age group 20 70years who were diagnosed with grade 3 4 hemorrhoids, divided into two groups equally. contains 25 Patients u...

BACKGROUND Many researchers studied human Papillomavirus infection in the anal area supposing it represents a risk factor for precursor lesions of anal cancer. AIM To study the association between histological findings suggestive of injury by the virus in hemorrhoidectomy specimens. METHOD Prevalence study was carried out based on histopathological analysis of hemorrhoidectomy specimens to ...