The spectral function A(q,v) of doped t-J ladders is presented on clusters with up to 2320 sites at zero temperature applying a recently developed technique that uses up to ;6310 rung-basis states. Similarities with photoemission results for the two-dimensional cuprates are observed, such as the existence of a gap at (p ,0) near half-filling ~caused by hole pair formation! and flat bands in its...

The tetra-nuclear title compound, [Sn4(CH3)8(C3H7O)2O2(C3H4N3S)2], lies about a center of inversion; the mol-ecule features a three-rung-staircase Sn4O4 core in which two Sn(IV) atoms are bridged by the 4-methyl-5-sulfanyl-idene-4,5-dihydro-1H-1,2,4-triazol-1-ide group. The negatively charged N atom of the group binds to the terminal Sn(IV) atom at a shorter distance [Sn-N = 2.236 (2) Å] compar...

We report new astrometric and spectroscopic observations of the star S2 orbiting the massive black hole in the Galactic Center, which were taken at the ESO VLT with the adaptive optics assisted, near-IR camera NAOS/CONICA and the near-IR integral field spectrometer SPIFFI. We use these data to determine all orbital parameters of the star with high precision, including the Sun-Galactic Center di...

Đặt vấn đề: Điều trị chống đông là một trong những biện pháp điều quan trọng nhất của nhiều bệnh lý nội – ngoại khoa thuộc chuyên khác nhau. Thuốc kháng đã được chứng minh hiệu quả dự phòng biến cố thuyên tắc huyết khối các trường hợp như rung nhĩ, van tim cơ học, tĩnh mạch chi dưới v.v… Kết nghiên cứu thực hành lâm sàng hàng ngày sẽ góp phần nhận định cách tiết hơn, cụ thể hơn tình hình sử dụn...

In this study we propose a measure of the entropy norm (R, S) for q-row orthopair fuzzy sets (qROFS). The proposed is validated both theoretically and practically to ensure validity. We also simple methodology purpose solving multi-criteria decision-analysis problems using introduced measure. This method takes into account different circumstances criteria weights, such as unknown well other cas...

Dempster-Shafer theory is widely used in decision-making and considered as one of the potential mathematical tools order to fuse evidence. However, existing studies this show disadvantage due conflicting nature standard evidence set combination rule In paper, we have constructed framework q-rung address issue conflicts based on fuzzy number its more comprehensive range advantage compared other ...

This paper studies the effects of Natural convection and Thermal radiation on nanofluid over a non-linearly stretching sheet. The governing equation nonlinear partial differential equations flow is transformed to ordinary by using similarity transformation, earlier than being solved numerically through Rung-Kutta-Fehlberg method with shooting technique. numerical results have been obtained for ...

The q-rung linear Diophantine fuzzy set is a recently developed tool to handle with uncertain and awkward information in real-life issues applicable where reference parameter-based opinions. Similarity measures are distance dimensions representing features of the objects. Keeping advantages above analysis, this paper proposes similarity based on exponential function for sets thus presents first...