Why the Spacetime Embedding Incompressible Cores of Pulsars Must Be Conformally Flat?

The multi-messenger observations of the merger event in GW170817 did not rule out the possibility that the remnant might be a dynamically stable neutron star with . Based on this and other recent events, I argue that the universal maximum density hypothesis should be revived. Accordingly, the central densities in the cores of ultra-compact objects must be upper-limited by the critical density number ncr, beyond which supranuclear dense matter becomes purely incompressible. Based on the spacetime-matter coupling in GR, it is shown that the topology of spacetime embedding incompressible quantum fluids with n=ncr must be Minkowski flat, which implies that spacetime at the background of ultra-compact objects should be bimetric.

The Progenitor of the Big Bang and Its Connection to the Flatness and Acceleration of the Universe

It was argued that old and massive neutron stars end up as black objects that are made of purely incompressible superconducting gluon-quark superfluid matter (henceforth SuSu-objects). Based on theoretical investigations and numerical solving of the field equations with time-dependent spacetime topologies, I argue that a dense cluster of SuSu-objects at the background of flat spacetime that merged smoothly is a reliable candidate for the progenitor of the big bang. Here, we present and use a new time-dependent spacetime metric, which unifies the metrics of Minkowski, Schwarzschild, and Friedmann as well as a modified TOV-equation for modeling dynamical contractions of relativistic objects. Had the progenitor undergone an abrupt decay, a hadronizing front forms at its surface and starts propagating from outside-to-inside, thereby hadronizing its entire content and changing the topology of the embedding spacetime from a flat into a dynamically expanding curved one. For an observer located at the center of the progenitor, H0, the universe would be seen as isotropic and homogeneous, implying therefore that the last big bang event must have occurred in our neighborhood. For the curved spacetime re-converges into a flat one, whereas the outward-propagation topological front, which separates the enclosed curved spacetime from the exterior flat one, would appear spatially and temporally accelerating outwards. The here-presented scenario suggests possible solutions to the flatness problem, the origin of acceleration of the universe and the pronounced activities of high redshift QSOs. We anticipate that future observations by the James-Webb-Telescope to support our scenario when active QSOs with z >12 would be detected.

Does Our Universe Conform with the Existence of a Universal Maximum Energy-Density <i>p_max<sup style="margin-left:-30px;">uni</sup></i>

Recent astronomical observations of high redshift quasars, dark matter-dominated galaxies, mergers of neutron stars, glitch phenomena in pulsars, cosmic microwave background and experimental data from hadronic colliders do not rule out, but they even support the hypothesis that the energy-density in our universe most likely is upper-limited by pmaxuni which is predicted to lie between 2 to 3 the nuclear density p0. Quantum fluids in the cores of massive NSs with p ≈ pmaxuni each the maximum compressibility state, where they become insensitive to further compression by the embedding spacetime and undergo a phase transition into the purely incompressible gluon-quark superfluid state. A direct correspondence between the positive energy stored in the embedding spacetime and the degree of compressibility and superfluidity of the trapped matter is proposed. In this paper relevant observational signatures that support the maximum density hypothesis are reviewed, a possible origin of pmaxuni is proposed and finally the consequences of this scenario on the spacetime’s topology of the universe as well as on the mechanisms underlying the growth rate and power of the high redshift QSOs are discussed.

Dissipative Quantum Computing with Majorana Fermions

We describe a scheme for universal quantum computation with Majorana fermions. We investigate two possible dissipative couplings of Majorana fermions to external systems, including metallic leads and local phonons. While the dissipation when coupling to metallic leads to uninteresting states for the Majorana fermions, we show that coupling the Majorana fermions to local phonons allows to generate arbitrary dissipations and therefore universal quantum operations on a single QuBit that can be enhanced by additional two-QuBit operations.

电影CL——新的X线CT检查方法

电影CT属于新一代的CT装置,它除用作形态学诊断外,还可用作功能研究。电影CT的电子束光学可使照相的频率达17帧图象/秒,每次曝光时间为50ms。

The Remnant of GW170817: A Trapped Neutron Star with a Massive Incompressible Superfluid Core

Our bimetric spacetime model of glitching pulsars is applied to the remnant of GW170817. Accordingly, pulsars are born with embryonic incompressible superconducting gluon-quark superfluid cores (SuSu-matter) that are embedded in Minkowski spacetime, whereas the ambient compressible and dissipative media (CDM) are imbedded in curved spacetime. As pulsars cool down, the equilibrium between both spacetime is altered, thereby triggering the well-observed glitch phenomena. Based thereon and assuming all neutron stars (NSs) to be born with the same initial mass of , we argue that the remnant of GW170817 should be a relatively faint NS with a massive central core made of SuSu-matter. The effective mass and radius of the remnant are predicted to be and Rrem=10.764 Km, whereas the mass of the enclosed SuSu-core is . Here, about 1/2Mcore is an energy enhancement triggered by the phase transition of the gluon-quark-plasma from the microscopic into macroscopic scale. The current compactness of the remnant is , but predicted to increase as the CDM and cools down, rendering the remnant an invisible dark energy object, and therefore to an excellent black hole candidate.

系统式治疗的理论

系统的概念心理治疗师所说的'系统',是指社会系统内各个成员之间的相互交流,如夫妻、家庭、邻居、医患关系、小组、机构、照顾系统等;也包括由这些交流所引发的生理心理过程,如思维、情感、激素分泌或疾病。心理治疗中的'系统式'观察方法。

胃、十二指肠X线检查诊断价值

自纤维内窥镜应用于临床后,胃、十二指肠X线检查日趋减少,目前,对胃、十二指肠X线检查的诊断价值有完全不同的看法,随着新的影象学方法的开展和介入放射学应用的不断增加,在大医院和教学医院则成了补偿上消化道X线作用的新重点。胃、十二指肠X线检查在小医院和临床X线诊断中仍为日常工作的重点。较大医院的放射科,从培训的理由来看,尤其是对外科医师说来常常要求作一些基本的胃、十二指肠X线的诊断,它是不能废除的。从我们对一所拥有1500张病床的综合医院所进行的研究表明,胃、十二指肠X线检查仍具有非常重要的意义。从多年来与外科内窥镜室密切合作以及近十二年来Mann-heim临床医院对上消化道X线检查的统计结果来看,似乎胃、十二指肠X线检查仍有其优点。

饮酒对经皮腔内冠状动脉成形术和支架植入术后再狭窄率的影响

Objective: To disclose possible influences of alcoholic beverages on restenosi s rate in men with coronary artery disease treated with percutaneous translumina l coronary angioplasty (PTCA) and stent implantation. Design: Retrospective coho rt study. Patients: 225 consecutive male patients underwent PTCA and stent impla ntation. All patients had a control angiography and were contacted for a questio nnaire regarding their drinking habits. Main outcome measures: Mean late loss of luminal diameter, rate of coronary restenosis of 50%or more within the stented segment, and rate of repeat angioplasty. Results: 53 patients (with 80 stents) consumed< 50 g of alcohol a week and 172(with 266 stents) consumed more (50-700 g a week). Baseline characteristics were similar in both groups except for a hi gher prevalence of reduced cardiac function and multivessel disease and a lower high density lipoprotein cholesterol concentration among patients who consumed l ittle or no alcohol. Patients who consumed ≥50 g alcohol a week had a lower mea n late loss of the luminal diameter (1.1 (0.79)mm v 1.45 (0.82) mm, p=0.002), a lower rate of coronary restenosis within the stented segment (33.7%v 48.8%, p= 0.001), and a lower rate of repeat angioplasty(23.3%v 42.5%, p=0.002). In mult ivariate analysis, only alcohol consumption and diabetes were independent and si gnificant discriminators for late loss of luminal diameter (p=0.005 and p=0.01, respectively), restenosis(odds ratio 0.54 and 2.08, respectively), and repeat an gioplasty(odds ratio 0.39 and 2.18, respectively). Conclusion: Alcohol intake is associated with reduced restenosis after PTCA and stent implantation.

接受奈韦拉平或依法韦伦治疗的HIV感染患者发生的皮疹

Efavirenz and nevirapine are frequently used drugs in antiretroviral therapy. Rashes are common side effects of these drugs. In this study, we examined the characteristics of efavirenz- and nevirapine- associated rashes. This prospective nonrandomized multicenter study included 662 HIV- infected patients (efavirenz: 325, nevirapine: 337) to determine incidence, duration, cross- reactivity, and outcome upon reexposure. Of the treated patients, 4.5% (n=30) developed rashes (nevirapine: 2.4% and efavirenz: 6.4% ). In four patients treatment was not interrupted. Three patients were reexposed to the initial drug without any side effects. Therapy with nevirapine or efavirenz does not have to be interrupted if rashes exhibit no blistering, mucosal manifestations, or systemic signs.

浸润性膀胱癌的新辅助化疗

辅助化疗是指完全切除肿瘤后巩固疗效的细胞抑制治疗,在浸润性膀胱癌预定治疗前(膀胱切除术、放疗)的化疗通常分为两类:①诱导性化疗:原发肿瘤不能手术的细胞抑制治疗其目的是降低肿瘤分期,提高随后手术或放疗的治愈机会;②新的辅助化疗;原发肿瘤可以手术治愈的细胞抑制治疗,其日的是通过使原发肿瘤失活和消除微转移提高预定治疗(膀胱全切、放疗)的治愈机会。