Analyzing the Influence of Titanium Content in 5087 Aluminum Filler Wires on Metal Inert Gas Welding Joints of AA5083 Alloy.

As the demand for lightweight structures in the transportation industry continues to rise, AA5083 aluminum alloy has become increasingly prominent due to its superior corrosion resistance and weldability. To facilitate the production of high-quality, intricate AA5083 components, 5087 aluminum filler wire is commonly utilized in metal inert gas (MIG) welding processes for industrial applications. The optimization of filler wire composition is critical to enhancing the mechanical properties of AA5083 MIG-welded joints.

Defects-Rich Heterostructures Trigger Strong Polarization Coupling in Sulfides/Carbon Composites with Robust Electromagnetic Wave Absorption.

Defects-rich heterointerfaces integrated with adjustable crystalline phases and atom vacancies, as well as veiled dielectric-responsive character, are instrumental in electromagnetic dissipation. Conventional methods, however, constrain their delicate constructions. Herein, an innovative alternative is proposed: carrageenan-assistant cations-regulated (CACR) strategy, which induces a series of sulfides nanoparticles rooted in situ on the surface of carbon matrix.

Twist elastic constant of chiral nematic cellulose nanocrystals determined by tactoid reconfiguration in electric field.

Lyotropic chiral nematic cellulose nanocrystals (CNCs) have attracted significant attention and great progress has been made. Investigating their physical parameters, especially the twist elastic constant (K), is pivotal for advancing our comprehension of fundamental viscoelastic property of chiral nematic phase. In this study, we demonstrate a straightforward method to simultaneously estimate K and helical twisting power (K) of chiral nematic CNCs.

Ni nanoparticles supported on AlO + LaO yolk-shell catalyst for photo-assisted thermal decomposition of methane.

Catalytic methane decomposition (CMD) has emerged as an appealing technology for large-scale production of H and carbon nanostructures from natural gas. As the CMD process is mildly endothermic, the application of concentrated renewable energy sources such as solar energy under a low-temperature regime could potentially represent a promising approach towards CMD process operation. Herein, Ni/AlO-LaO yolk-shell catalysts are fabricated using a straightforward single-step hydrothermal approach and tested for their performance in photothermal CMD.

Tunable sulfur vacancies and hetero-interfaces of FeS-based composites for high-efficiency electromagnetic wave absorption.

Controlling Vacancies and heterointerfaces of nano/microstuctures is very challenging, importantly, which tailors the electromagnetic (EM) parameters to develop the high-performance electromagnetic wave (EMW) absorbers. Herein, we report a strategy using various sulfur-source modifying FeO nanosphere by one-step hydrothermal method to prepare a series of FeS-based composites. Diverse sulfur sources determine their morphologies, crystal structures and compositions, and further affect EMW absorption abilities.

Comparison of outcomes in intrauterine insemination, fertilisation and intracytoplasmic sperm injection in men with and without varicocele.

To investigate the differences in clinical pregnancy, miscarriage, and live birth rates when male partners were diagnosed with a varicocele and to compare these outcomes to those without and study the outcomes based on the grade of varicocele. The retrospective study was based on a cohort of consecutive infertile couples undergoing assisted reproductive technology (ART) at the Reproductive Center of Shandong Provincial Hospital affiliated to the Shandong University during the period between January 2017 and December 2018. A total of 4203 couples comprised of men with and without varicocele undergoing the first ART cycle (1501 intrauterine inseminations (IUI), 1623 fertilisations (IVF) and 1079 intracytoplasmic sperm injections (ICSI)) were included.

A Novel Splicing Mutation in the Gene in a Family With Congenital Contractural Arachnodactyly.

Congenital contractural arachnodactyly (CCA) is an extremely rare monogenic disorder in humans, and the prevalence of CCA is estimated to be less than 1 in 10,000 worldwide. CCA is characterized by arachnodactyly, camptodactyly, the contracture of major joints, scoliosis, pectus deformities, and crumpled ears. Mutations in (which encodes fibrillin-2) are responsible for causing this disease.

Effective Cocatalyst Pt/PtO Nanodots on La₂O₃ Microspheres for Degradation of Methyl Orange.

Platinum (Pt) has been intensively studied as an effective cocatalyst for photocatalysis, but most reports have focused on metallic Pt rather than PtO. Here, Pt/PtO nanodots were deposited on porous yolk-shell La₂O₃ microspheres. XRD patterns and XPS analysis demonstrated the coexistence of Pt and PtO, which was beneficial for photocatalytic performance.

Synthesis of Single-Component Metal Oxides with Controllable Multi-Shelled Structure and their Morphology-Related Applications.

Multi-shelled hollow spheres metal oxides, namely materials with more than three shells, have attracted increasing attention due to their unique structure. The preparation methods of typical metal oxides including NiO, Co O and ZnO etc. have been summarized in this review.

Clinical Correlation of Prostatic Calculi With Semen Parameters in Adult Men With Fertility Intention.

To investigate the correlation of prostatic calculi (PC) with semen parameters in men with fertility intention, this retrospective case-control study enrolled 1,303 participants ranging from 20 to 59 years old; 725 were diagnosed with PC using abdominal ultrasonography. Patients with PC were classified into the type A calculi group (discrete and small echoes) and type B calculi group (coarse and large masses of multiple echoes). Five hundred and seventy-eight men without PC were recruited for the control group.

Treatment of smouldering coal refuse piles: an application in China.

Coal refuse pile fires are a serious health, safety, and environment hazard. The fires in Guoshan Coal Refuse Pile affect daily life of the local residents. Although conventional fire control methods (water injection, grouting and surface sealing) were used to control the fires, they rekindled soon after the fire-fighting engineering was quitted.

Success rates of fertilization versus intracytoplasmic sperm injection in men with serum anti-sperm antibodies: a consecutive cohort study.

Antisperm antibodies (ASAs) are assumed to be a possible causative factor for male infertility, with ASAs detected in 5%-15% of infertile men but in only 1%-2% of fertile ones. It remains unclear whether ASAs have an adverse effect on the outcome of in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). This study investigated differences in the rates of fertilization, pregnancy, and live births associated with serum ASA-positive and ASA-negative men following IVF or ICSI.

The association between testicular microlithiasis and semen parameters in Chinese adult men with fertility intention: experience of 226 cases.

Objective: To investigate the association between testicular microlithiasis (TM) and semen parameters in Chinese adult men with fertility intention.

Materials And Methods: We retrospectively reviewed the ultrasonography results of the reproductive system of 16,204 consecutive adult male patients in our hospital with fertility intention from November 2012 to October 2013. TM was diagnosed by scrotal ultrasonography.

Association of cystic fibrosis transmembrane-conductance regulator gene mutation with negative outcome of intracytoplasmic sperm injection pregnancy in cases of congenital bilateral absence of vas deferens.

Objective: To evaluate intracytoplasmic sperm injection (ICSI) results with regard to congenital bilateral absence of vas deferens (CBAVD) versus non-CBAVD obstruction, cystic fibrosis transmembrane-conductance regulator (CFTR) mutations versus non-CFTR mutations, and miscarriages or stillbirths versus live births per embryo transferred.

Design: Retrospective study with detailed chart review.

Setting: Center for reproductive medicine.

Different cystic fibrosis transmembrane conductance regulator mutations in Chinese men with congenital bilateral absence of vas deferens and other acquired obstructive azoospermia.

Objective: To investigate cystic fibrosis transmembrane conductance regulator (CFTR) gene in Chinese men with congenital bilateral absence of vas deferens (CBAVD) and other obstructive azoospermia.

Materials And Methods: Four hundred one patients with obstructive azoospermia were included. Patients were grouped as 158 with CBAVD and 243 with other acquired obstructive azoospermia.

[Use of L-carnitine before percutaneous epididymal sperm aspiration-intracytoplasmic sperm injection for obstructive azoospermia].

Objective: To explore the use of L-carnitine before percutaneous epididymal sperm aspiration-intracytoplasmic sperm injection (PESA-ICSI) in the treatment of obstructive azoospermia.

Methods: Seventy-nine cases of obstructive azoospermia treated in our center from Sep 2008 to Aug 2009 were divided into an L-carnitine (n = 43) and a control group (n = 36), the former given oral L-carnitine at 1 g bid for 3 months before PESA-ICSI, while the latter left untreated. Comparisons were made between the two groups in the number of retrieved oocytes and fertilized oocytes as well as the number and rate of good embryos.