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Objective: To explore application of thromboelastography(TEG) on clot formation evaluation of patients with Ovarian Hyperstimulation Syndrome(OHSS). Methods: A total of 35 patients with OHSS and 21 patients without OHSS after embryo transfer therapy were received TEG test and conventional coagulation parameters test, including prothrombin time(PT), activated partial thromboplastin time(APTT), fibrinogen(FIB), etc. The change of conventional coagulation parameters and TEG indicators were analyzed between OHSS and control groups, as well as before and after treatment in OHSS group. Results:(1) Comparing with control group, PT time was significantly higher, while FIB levels were significantly lower in OHSS group. However, no significant difference was found on APTT time(P=0.112).(2) TEG showed that the coagulation index(CI) of OHSS group was significantly higher than that of control group(3.6±0.7:0.8±0.5).(3) After treatment, the average CI of OHSS group was 2.8±0.9, which was significantly decreased than admission(P<0.01). Conclusion: TEG test might be used for the coagulation function evaluation in OHSS patients, and provided important evidence for prevention, judgment and treatment of thrombosis. [ABSTRACT FROM AUTHOR]

A 1 kW photovoltaic grid-connected inverter which uses DSP28335 as the core processor is proposed. Two-stage topological structure is adopted for DC/AC conversion in the inverter. A non-isolated coupled inductor voltage doubler cell Boost converter is used in the pre-stage, it realizes high voltage gain and low loss of the circuit. The double closed-loop control strategy based on PI adjuster is explained. The design process of main circuit and control circuit is introduced in detail. The experiment shows that the prototype meets the proposed design criterion. [ABSTRACT FROM AUTHOR]

Objective To observe the effect of nalbuphine on postoperative analgesia after laparoscopic radical cervical cancer surgery. Methods Sixty patients with ASA Ⅰ - Ⅱ underwent laparoscopic radical cervical cancer surgery in Obstetrics & Gynecology Hospital, Fudan University from Sep 2017 to Feb 2018 were randomly divided into group nalbuphine (N, n=29）and group sufentanil (S, n= 27) by random number table. Nalbuphine and sufentanil were used for pain management during the perioperative period respectively. We measured visual analogue score (VAS) in motion and static state at postoperative 2, 6, 12, 24 and 48 h, the number of patient-controlled analgesia (PCA) the number of nausea, vomiting and adverse reactions. Results VAS scores in both static and motion state at postoperative 2, 6, 12 h as well as VAS scores in motion state at postoperative 24 h in group N were significantly lower than those in group S (P<0.05). The number of PCA, nausea, vomiting and other adverse reactions in the two groups were not significantly different. Conclusion Compared with sufentanil, nalbuphine was associated with lower postoperative pain score after laparoscopic radical surgery for cervical cancer without increasing adverse reactions. [ABSTRACT FROM AUTHOR]

As a type of biodegrada polyvinyl alcohol (PVA) film, its environmentally friendly characteristic has been widely recognized around the world. However, its poor water resistance largely limits the popularization and application, due to a large number of hydrophilic groups in PVA molecules. In this work, glutaraldehyde and urea were used to react with PVA by acetal reaction, and then the plasticizers (glycerol, PEG-400, MgCl2) were added to the system to destroy the hydrogen bonding of PVA and reduce its crystallinity, in order to achieve the plastic modification effect. Finally, the structure of the products and the performance of the cured films were characterized by Fourier transform infrared spectrometer (FT-IR), thermogravimetric (TG) analysis, physical and mechanical properties, and contact angle. The results showed that the water resistance and thermal stability of PVA films could be enhanced by the crosslinking reaction of PVA with glutaraldehyde and urea. The addition of glycerol, PEG-400 and MgCl2 could improve the elongation at break and tensile strength of PVA films. And when the additive amount of glutaraldehyde, urea, glycerol, PEG-400 and MgCl2 in the formula were 4%, 0.5%, 6% and 2%, respectively, the mechanical properties of the film were optimal with the elongation at break of 136.7% and the tensile strength of 3.48 MPa. [ABSTRACT FROM AUTHOR]

In this paper, methyl eleostearate was prepared via the transesterification reaction betweent ung oil and methanol, and then was used to synthesize methyl eleostearate-maleic anh ydride CME-MA) adduct by D-A reaction under UV light. The structure of ME-MA was also identified and characterized by FTIR spectra, UVvis spectra and 1H NMR. Finally, ME-MA adduct was applied to the polyurethane coatings to study the effect of photoinitiator, reactive diluent and ME-MA adduct on the cured films. The experimental results concluded that the optimum formula conditions were as follows: the photoinitiator was TPO, the reactive diluent was HDDA, the amount of TPO was 5% and the addition amount of ME-MA was 20%. The cured film formation possessed good performance, including the highest gel fraction of 96.5%, tensile strength of 11.3 MPa and elongation at break of 23.2%. [ABSTRACT FROM AUTHOR]

Tung oil, as an important strategic biomaterial and renewable biomass resource, has attracted increasing attention due to its high value of research and application. In this study, eleostearic acid glyceride (the main component of tung oil) was transformed to methyl eleostearate (ME) by transesterification, and then reacted with catechol (CAT) via Friedel-Crafts alkylation using SO3 H-functionalized ionic liquid as catalyst. The alkylation products (CAT-ME) similar to urushiol (urushiol analogues) were successfully synthesized, and confirmed by the characterization results of infrared spectroscopy, UV visible spectroscopy, NMR spectra and IIPLC-MS spectra. [ABSTRACT FROM AUTHOR]