The herbicide atrazine is used extensively throughout the United States, and is a widespread groundwater and surface water contaminant. Biochar has been shown to strongly sorb organic compounds and could be used to reduce atrazine leaching. We used lab and field experiments to determine biochar impacts on atrazine leaching under increasingly heterogeneous soil conditions. Application of pine ch...

A priority queue is a data type where the element with the smallest key value can be found and deleted, and new elements can be inserted. It is also called a priority queue when the element with the largest key value is wanted, instead of the smallest. In some cases, it is interesting to find and delete both the smallest and the largest element, as well as to be able to insert new elements. A s...

Sulfuric acid solution containing ferric iron is the extractant for industrial heap bioleaching of copper sulfides. To start a plant, sulfuric usually added to irrigation maintain adequate acidity (pH 1.0–2.0) dissolution. An practice secondary sulfide ore that began with only water without addition was successfully implemented and introduced in this manuscript. The mineral composition their be...

Despite all the benefits of garbage collection, memory leaks remain a problem for Java programs. A memory leak in Java occurs when a program inadvertently maintains references to objects that it no longer needs, preventing the garbage collector from reclaiming space. At best, leaks degrade performance. At worst, they cause programs to run out of memory and crash. Small continuous leaks in long-...

Several data structures have been proposed to implement double-ended priority queue operations in O(log n) time, e.g., Min-Max heap [ 11, Deap [2], Diamond deque [3] and back-to-back heap [4]. In MinMax heaps, the even layers form a Min-heap and the odd layers form a Max-heap. Deap has separate Minheaps and Max-heaps that are built on the left and right subtrees, respectively. In Diamond deque,...

m this paper, lower and upper bounds for min-max pair heap construction has been presented. It has been shown that the construction of a min-max pair heap with n elements requires at least 2.07n element comparisons. A new algorithm for creating min-max pair heap has been devised that lowers the upper bound to 2.43n. @ 2002 Elsevier Science Ltd. All rights reserved. Keywords-Algorithm, Heap, Min...

The Fibonacci heap is a classic data structure that supports deletions in logarithmic amortized time and all other heap operations in O(1) amortized time. We explore the design space of this data structure. We propose a version with the following improvements over the original: (i) Each heap is represented by a single heap-ordered tree, instead of a set of trees. (ii) Each decrease-key operatio...

The extraction behavior of Cu(II) ions from a real sulfate liquor obtained from the heap leaching stage of a copper oxide ore was investigated using a chelating reagent, Chemorex CP-150 in kerosene. A comparative study was also carried out on the extraction capability of Cu(II) ions using other solvents including D2EHPA and Cyanex 272.Chemorex CP-150 demonstrated an effective and selective extr...

I begin by highlighting the importance of the step size in the induction step of the sorites paradox. A careful analysis reveals that the step size can be characterised as a proper instance of the concept very small. After having accurately described the structure of sorites-susceptible predicates, I argue that the structure of the induction step in the Sorites Paradox is inherently circular. T...