High-Resolution Manifold Acoustic Holography Based on High-Pixel-Array Binary Metasurfaces.

Acoustic holograms using artificial materials have become an area of intense interest in acoustics due to the great potential in various applications such as medical imaging, underwater detection and object manipulation, etc. In this article, a general approach is proposed for designing high-pixel-array binary metasurfaces and then fabricating the intricate ultrathin structures via picosecond laser processing for implementing high-resolution manifold holograms in far fields. The angular spectrum propagation is utilized in combination with the forward optimization, instead of the Rayleigh-Sommerfeld integral, to efficiently simulate far-field holograms at the target plane.

Efficient conversion of waterborne acoustic waves into electrical energy by using the phase-reversal Fresnel zone plate.

Acoustic energy harvesting assisted by metamaterial devices, deemed as a promising way of utilizing green energy, has been extensively investigated in the science and engineering communities during the past years, considering the ubiquitous sound waves in nature. To date, one of the biggest challenges in the acoustic energy harvesting lies in the improvement of efficiency and output power. In this work, we propose to use the phase reversal Fresnel zone plate (PR-FZP) for efficient acoustic energy harvesting in aquatic environment instead of using the traditional FZP.

Experimental investigation of acoustic moiré effect controlled by twisted bilayer gratings.

Recently, the moiré pattern has attracted lots of attention by superimposing two planar structures of regular geometries, such as two sets of metasurfaces or gratings. Here, we show the experimental investigation of acoustic moiré effect by using twisted bilayer gratings (i.e.

Metabolomic and transcriptomic responses of mouse testis to the dextran sulfate sodium induced colitis.

Inflammatory bowel diseases (IBDs), including Crohn's disease (CD) and ulcerative colitis, are widespread in developed countries and gradually increasing in developing countries. Evidences showed that man with CD has a decrease of serum testosterone, but how IBD take effects on testicular testosterone synthesis is not well elucidated. To investigate the effects of IBD on testis, we analyzed testicular metabolome and transcriptome data of the dextran sulfate sodium (DSS) induced IBD mice.

Maturation conditions, post-ovulatory age, medium pH, and ER stress affect [Ca]i oscillation patterns in mouse oocytes.

Insufficiency of oocyte activation impairs the subsequent embryo development in assisted reproductive technology (ART). Intracellular Ca concentration ([Ca]i) oscillations switch the oocytes to resume the second meiosis and initiate embryonic development. However, the [Ca]i oscillation patterns in oocytes are poorly characterized.

Integrin-Linked Kinase (ILK) Regulates Urinary Stem Cells Differentiation into Smooth Muscle via NF-B Signal Pathway.

Objectives: Urinary stem cells (USCs) have the capacity for unlimited growth and are promising tools for the investigations of cell differentiation and urinary regeneration. However, the limited life span significantly restricts their usefulness. This study is aimed at exploring the effect of integrin-linked kinase (ILK) on the smooth muscle cells (SMCs) differentiation of the dog USCs and investigating its molecular mechanism.

[Penile erectile strength measurement band for differentiation and classification of erectile dysfunction].

Objective: To study the clinical application value of the penile erectile strength measurement (PESM) band in the differentiation of psychogenic from organic erectile dysfunction (ED).

Methods: Eighty ED patients unable to achieve or maintain adequate penile erection to complete sexual intercourse were included in the experimental group and another 40 healthy subjects with normal erectile function enrolled as controls. The ED cases were classified into mild, moderate and severe ED according to the IIEF-5 scores and divided into psychogenic and organic ED based on the results of the nocturnal penile tumescence (NPT) test.

[Circumcision reduces the incidence of human papillomavirus infection in men].

Objective: To investigate the association of circumcision with the incidence of human papillomavirus (HPV) infection in men.

Methods: We collected the samples from the surface of the coronal sulcus, glans penis, penile shaft and scrotum of 351 males examined for HPV infection in our hospital from January 2016 to August 2017, of whom 118 had received circumcision while the other 233 had not. We compared the incidence rate of HPV infection between the circumcision and non-circumcision groups and analyzed the association of the age of circumcision with the incidence of HPV infection.

[Value of the serum free testosterone level in detecting erectile dysfunction].

Objective: To investigate the values of serum calculated free testosterone (cFT), testosterone secretion index (TSI), and free testosterone index (FTI) in the diagnosis of ED with androgen deficiency by observing their changes in the patient.

Methods: We conducted this study among 185 men complaining of ED and 35 20－40 years old healthy males presenting at the clinic for premarital medical checkup. We asked them about their medical history, to fill in the International Index of Erectile Function (IIEF-5) Questionnaire, and to complete the nocturnal penile tumescence (NPT) test.

Miniature piezoelectric conical transducer: fabrication, evaluation and application.

This paper reports a new type miniature-conical transducer for acoustic emission measurements. The transducer follows the basic idea and structure of a conventional NBS conical transducer, but is much compact in size and easier to use. The improvements are made possible by introducing an excimer laser micromachining method for fabricating smaller PZT conical elements, which play a key role in the transducer.