abstract background: for infertile women aged over 35 years, failure of the zp (zona pellucida) to rupture is believed to be associated with a decreased implantation rate in in vitro fertilization (ivf) or intra cytoplasmic sperm injection (icsi). objective: in this research, laser assisted hatching (lah) was offered to patients with advanced maternal age to evaluate a possible benefit. materia...

Mechanical sit-to-stand devices assist patient transfers and help protect against work-related injuries in rehabilitation environments. However, observational differences between patient's movements within devices compared to normal sit-to-stand transfers deter clinician use. This study compared kinematics and muscle demands during sit-to-stand transfers with no device (ND), and device-assisted...

To solve the problem of poor treatment high concentration landfill leachate, an electro-assisted ultraviolet (UV)/zero-valent iron (ZVI) synergic activated persulfate (PS) system was used to treat leachate. The effects PS and ZVI dosage, initial pH value, current density on removal efficiency COD NH3-N in leachate were investigated. single PS, electrochemical, UV/PS, ZVI/UV co-activated compare...

An ultrasound-assisted activation method for electroless silver plating is presented in this study. When the ultrasound was applied during the activation step, the amount of the Pd species adsorbed on substrate surfaces was higher than that of sample pretreated with a conventional activation process without ultrasound irradiation. With this activation method, it was also shown that the adsorbed...

Abstract In the present study, we produced SiO x /C from rice husk by NaCl sub‐micron crystal‐assisted synthesis method which can mitigate environmental degradation and hazards, simplify preparation, improve electrochemical performance. During synthesis, induces catalytic graphitization, carbon activation, amorphous silica formation. Moreover, it is only partially consumed be recrystallized reu...

In recent years, environmental pollution has become more serious, especially the organic pollutants. Metal frameworks (MOFs) are promising materials used to degrade pollutants recently. Among them, Materials Institute Lavoisier (MILs) have been widely engaged due their good stability and unique structural characteristics. This paper systematically analyses summarizes progress of MILs in degrada...

Abstract Bicyclic alkenes, including oxa- and azabicyclic readily undergo activation with facial selectivity in the presence of transition-metal complexes. This is due to intrinsic angle strain on carbon–carbon double bonds such unsymmetrical bicyclic systems. During past decades considerable progress has been made area ring opening strained rings by employing concept C–H activation. short revi...

objectives: major depression and anxiety disorders are common psychiatric disorders among cancer patients and are associated with psychosocial impairment and decreased quality of life. depressed and anxious cancer patients also experience a more rapid progression of cancer symptoms, increased mortality, more metastasis and pain, and increased medical utilization. although some research has expl...

The present study examines the handling, activation, and micromanipulation of rat eggs in an attempt to produce live young using nuclear transfer (NT) of adult and genetically modified rat fetal cells. Mature rat eggs cultured in calcium-free medium showed reduced rates (24%) of chromosomal dispersion ("spontaneous activation" characteristic of this species) compared with eggs cultured in calci...