AdS Black Hole with Phantom Scalar Field

In this paper, we present an AdS black hole solution with Ricci flat horizon in Einstein-phantom scalar theory. The phantom scalar fields just depend on the transverse coordinates $x$ and $y$, and which are parameterized by the parameter $\alpha$. We study the thermodynamics of the AdS phantom black hole. Although its horizon is a Ricci flat Euclidean space, we find that the thermodynamical properties of the black hole solution are qualitatively same as those of AdS Schwarzschild black hole. Namely there exists a minimal temperature, the large black hole is thermodynamically stable , while the smaller one is unstable, so there is a so-called Hawking-Page phase transition between the large black hole and the thermal gas solution in the AdS spacetime in Poincare coordinates. We also calculate the entanglement entropy for a strip geometry dual to the AdS phantom black holes and find that the behavior of the entanglement entropy is qualitatively the same as that of the black hole thermodynamical entropy.Comment: 6 pages, 8 figure

Low-Power Instrumentation Amplifier IC Design for ECG System Applications

AbstractThis paper describes the development of a low-power instrumentation amplifier (IA) intended for use in recording of the human electrocardiogram (ECG). With the wide-swing cascade bias circuit design, the IA realizes a very high power-supply rejection ratio (PSRR), and can be operated at signal supply voltage in the rage between 2.5 and 5.5 V. It was fabricated using 0.5um double-poly triple-metal CMOS technology, and occupies a die area of 0.2mm2.The amplifier provides a gain of 40 dB and has high common-mode rejection ration (CMRR) better than 100 dB. The IA has a power consumption of 160uW operating from a 3.3 V power supply

The Boundary Value Problem of the Equations with Nonnegative Characteristic Form

We study the generalized Keldys-Fichera boundary value problem for a class of higher order equations with nonnegative characteristic. By using the acute angle principle and the Hölder inequalities and Young inequalities we discuss the existence of the weak solution. Then by using the inverse Hölder inequalities, we obtain the regularity of the weak solution in the anisotropic Sobolev space

Weighted endpoint estimates for commutators of multilinear fractional integral operators

summary:Let $m$ be a positive integer, $0<\alpha <mn$, $\vec {b}=(b_{1},\cdots ,b_{m})\in {\rm BMO}^m$. We give sufficient conditions on weights for the commutators of multilinear fractional integral operators \Cal {I}^{\vec {b}}_{\alpha } to satisfy a weighted endpoint inequality which extends the result in D. Cruz-Uribe, A. Fiorenza: Weighted endpoint estimates for commutators of fractional integrals, Czech. Math. J. 57 (2007), 153–160. We also give a weighted strong type inequality which improves the result in X. Chen, Q. Xue: Weighted estimates for a class of multilinear fractional type operators, J. Math. Anal. Appl., 362, (2010), 355–373

Effectiveness of hydropathic compress of dandelion in ameliorating complications of arteriovenous fistula

Purpose: To investigate the effect of dandelion hydropathic compress on the complications of autologous arteriovenous fistula (AVF).Methods: From January to June 2019, a total of 162 patients treated with arteriovenous fistula for hemodialysis in the blood purification department of Affiliated Hospital of Jining Medical University were enrolled. They were randomly assigned at a ratio of 1:1 to receive either conventional infrared irradiation (control group) or conventional irradiation plus dandelion hydropathic compress (study group). The clinical endpoint was the amelioration of the complications of arteriovenous fistula after 6 months of treatment.Results: Dandelion hydropathic compress combined with conventional infrared irradiation was associated with a significantly higher clinical efficacy (96.30 %) than conventional infrared irradiation alone (77.78 %). The application of dandelion hydropathic compress plus infrared irradiation resulted in significantly reduced pain, a better quality of life, and a lower incidence of complications (p &lt; 0.05).Conclusion: Dandelion hydropathic compress plus routine nursing and infrared irradiation lower the incidence of complications, improve blood flow, relieve pain, and enhance the quality of life of patients. Further clinical trials are needed to confirm the usefulness of this therapeutic strategy

Effect of Phellodendron chinense Schneid Extract on Chronic Bacterial Prostatitis Induced by Chlamydia in Rats

Purpose: To explore the effects of Phellodendron chinense Schneid (PCS) extract on chlamydiainduced chronic bacterial prostatitis (CBP).Methods: Sixty 8-week-old male Sprague-Dawley rats were used in this study. Prostate index (PI) and prostate specific antigen (PSA) were determined after 4 weeks of oral administration of PCS extract (80, 160 or 320 mg/kg) or tetracycline (80 mg/kg) and compared to PI and PSA in untreated rats with CBP and healthy control rats (n = 10). Chronic inflammatory cell infiltrates, acinar changes, and interstitial fibrosis were evaluated by histopathological examination. In addition, pertinent inflammatory factors, including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), cyclooxygenase-2 (COX-2), prostaglandin E2 (PEG2), transforming growth factor β1 (TGF-β1), and connective tissue growth factor (CTGF), were measured in prostate tissues using ELISA kits.Results: High doses of PCS (160 and 320 mg/kg) significantly decreased PI and PSA relative to model group (p &lt; 0.01). PCS treatment also significantly reduced chronic inflammatory cell infiltrates and interstitial fibrosis in prostate tissue of CBP rats. In addition, TNF-α, IL-1β, COX-2, PEG2, TGF-β1, and CTGF decreased in PCS-treated rats compared to untreated control (p &lt; 0.01).Conclusion: PCS extract has significant anti-inflammatory effects on chlamydia-induced CBP.Keywords: Phellodendron chinense Schneid, Bacterial prostatitis, Inflammatory factors, Morphometric analysis, Interstitial fibrosis, Prostate specific antigen, Prostate inde

Cystic cavernous malformation of the cerebellopontine angle: Case report and literature review

<p>Abstract</p> <p>Background</p> <p>Cavernous malformations (CMs) in the cerebellopontine angle (CPA) are rare, and most of such CMs reported to date are solid and extend from the internal auditory canal into the CPA. In contrast, cystic CMs that arise in the CPA and do not involve the internal auditory canal and dura of the skull base are extremely rare.</p> <p>Case presentation</p> <p>A 50-year-old man presented with vertigo and progressive hearing loss in the right ear. MRI examination revealed a lesion in the CPA with solid and cystic components. Surgery was performed. Well-circumscribed adhesion to cranial nerves, the cerebellum, or the brain stem was noted during surgery. The lesion was totally resected. Pathological examination suggested the lesion to be a CM. At 1-year follow-up, the symptoms at presentation had resolved and no complications had occurred.</p> <p>Conclusion</p> <p>Although cystic CMs of the CPA have no established imaging features, a diagnosis of CMs may be suspected when a cystic lesion is present in the CPA and does not involve internal acoustic meatus or dura mater of the skull base. Skillful microsurgical techniques and monitoring of cranial nerves will secure good outcomes for patients with cystic CMs in the CPA.</p