Management of solid wastes is considered as an economic and environmental issue in the building stone industry. The current study uses raw and calcined calcareous sludge, generated in the stone cutting factories, in order to remove sulfur dioxide. Sludge characterization has been performed, using X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-d...

We introduce a natural strengthening of Gomory-Chvátal cutting planes for the important class of 0/1-integer programming problems and study the properties of the elementary closure that arises from the new class of cuts. Most notably, we prove that the new closure is polyhedral, we characterize the family of all facet-defining inequalities, and we compare it to elementary closures associated wi...

A cutting-plane procedure for integer programming (IP) problems usually involves invoking a blackbox procedure (such as the Gomory-Chvátal (GC) procedure) to compute a cutting-plane. In this paper, we describe an alternative paradigm of using the same cutting-plane black-box. This involves two steps. In the first step, we design an inequality cx ≤ d where c and d are integral, independent of th...

Lead Management Dialer App for your CRM Manage LeadsFor Ideas Inspiration To Create Your Ideal Home, Visit Inside Out!online expo for manufacturers of the automation robotics industry14 Feb 2006. The main subjects in this book relate to software development using cutting-edge technologies for real-world industrial automation applications.The main subjects in this book relate to software develop...

In this paper, we compare the strength of the semantic and syntactic version of the cutting planes proof system. First, we show that the lower bound technique of [22] applies also to semantic cutting planes: the proof system has feasible interpolation via monotone real circuits, which gives an exponential lower bound on lengths of semantic cutting planes refutations. Second, we show that semant...

The development of high-speed metal cutting has resulted in the use of emulsion-type cutting oils which incorporate the cooling properties of water with the lubricating and anticorrosive qualities of fatty oils. Emulsion-type cutting oils are subject, however, to bacterial degradation and usually contain considerable numbers of bacteria. Lee and Chandler (1941) found the bacterial content of cu...

The surface roughness is analysed in different feeds and turning procedures (rotational conventional) this paper. Cutting experiments were made on cutting speeds feed rates with 2 tool helical edge geometry 1 traditional tool. measured 2D values compared between the tools. benefit of circular application showed by decrease parameters machining time.

The paper deals with the problem of proper selection of tools and cutting parameters for a given task in external turning on the basis of catalogue recommendation. The described method takes into account, in its algorithms, various factors influencing machining operation like an actual machine tool and properties of workpiece material. The architecture of the CAPP system including a module for ...

Bone cutting is widely used in orthopaedic, dental and neuro surgeries and is a technically demanding surgical procedure. The major concern in current research is thermal damage of the bone tissue caused by high-speed power tools, which occurs when temperature rises above a certain tissue threshold value that is called bone necrosis. Hence optimization of cutting parameters is necessary to avoi...

background and aim: although nuchal cord is a common occurrence at birth, there is little attention to its importance or management at birth, and teaching includes premature clamping and cutting of the cord as the common option.  although grade 1 evidence is lacking, the optimal management of the nuchal cord,  the somersault manoeuvre  is not taught or included in any current guidelines. what e...