Primary myeloid sacrom (MS) is a rare tumor and even more rare in multiple organs with no evidence of bone marrow involvement. This report describes an unusual case of a 19-year-old male presenting scrotal MS with a history of subconjunctival MS, 5 months ago. Bone marrow biopsies showed no evidence of acute leukemia. Despite radiotherapy for first involvement and chemotherapy for second presen...

Three novel cadinane dimers, involucratusins A-C (1-3), five unique nor-cadinane-dimers, involucratusins D-H (4-8), together with a known compound (9) were isolated from the rhizomes of Stahlianthus involucratus. Their challenging structures and absolute configurations were determined by spectroscopic data, CD experimentation, chemical conversions and single-crystal X-ray diffraction. Compounds...

Abstract A short squeeze occurs if borrowed shares are recalled and the seller is unable to find another source of shares. This forces terminate a position early. For most stocks, probability very low. Short squeezes, however, not unusual for hardest borrow stocks. these trading costs from squeezes high have significant impact on returns selling. hard-to-borrow sellers also miss out abnormal be...

Many bioinspired methods are based on using several simple entities which search for a reasonable solution (somehow) independently. This is the case of Particle Swarm Optimization (PSO), where many simple particles search for the optimum solution by using both their local information and the information of the best solution found so far by any of the other particles. Particles are partially ind...

We discuss the structure of Dyson–Schwinger equations in quantum gravity and conclude in particular that all relevant skeletons are of first order in the loop number. There is an accompanying sub Hopf algebra on gravity amplitudes equivalent to identities between n-graviton scattering amplitudes which generalize the Slavnov Taylor identities. These identities map the infinite number of charges ...

Programming with parallel skeletons is an attractive framework because it encourages programmers to develop e cient and portable parallel programs. However, extracting parallelism from sequential speci cations and constructing e cient parallel programs using the skeletons are still di cult tasks. In this paper, we propose an analytical approach to transforming recursive functions on general rec...

This paper presents a new approach to parallel programming with algorithmic skeletons, i.e. common parallelization patterns. We use an imperative language enhanced by some functional features as host for the embedding of the skeletons. This allows an eecient implementation and at the same time a high level of programming. In particular, low level communication problems such as deadlocks are avo...

Parallel tree skeletons are basic computational patterns that can be used to develop parallel programs for manipulating trees. In this paper, we propose an efficient implementation of parallel tree skeletons on distributed-memory parallel computers. In our implementation, we divide a binary tree to segments based on the idea of m-bridges with high locality, and represent local segments as seria...

A scheme for arbitrary nesting of algorithmic skeletons is explained which is based on the idea of groups in MPI. The scheme is part of a semi-automatic compilation system which generates parallel code for nested HOFs. Two skeletons were developed which run in a nested mode: a binary divide and conquer and a process farm for a parallel implementation of fold and map HOFs respectively. Examples ...

Preview You learned in the Chapter 1 that all organic molecules have carbon skeletons. These carbon skeletons show great diversity in the ways that C atoms bond to each other, and in their three-dimensional shapes. Alkanes and cycloalkanes consist entirely of carbon skeletons bonded to H atoms since they have no functional groups. As a result, they serve as a basis for understanding the structu...