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Purpose This study aims to explore the characteristics and related factors of insomnia of patients after operation for gastric cancer. Methods A cross-sectional survey was carried out and finally 115 patients with insomnia after operation for gastric cancer were included. The general information, gastric cancer-related information, sleep quality, and other symptoms were investigated. Results ① The Pittsburgh sleep quality index score of most insomnia patients after gastric cancer surgery was 11-15 points, and the sleep quality rating was “poor”. ② The sleep quality of patients with insomnia after surgery for gastric cancer is related to the number of chemotherapy cycles, fatigue, and depression. ③ The probability of reduced sleep quality with the number of chemotherapy cycles >6 is 3.640 times that of ≤6. The probability of reduced sleep quality during moderate to severe fatigue was 4.390 times that of patients with no or mild fatigue. Conclusion Attention to related factors may be associated with improvement of sleep quality in patients with gastric cancer after surgery.

Background: Kanglaite injection (KLTI) is a traditional Chinese medicine (TCM) preparation with anti-tumor activity, which has been used to treat malignant tumors in China. The purpose of this study was to evaluate the efficacy and safety of intrapleural infusion with KLTI in the treatment of malignant pleural effusion (MPE).Methods: Randomized controlled trials (RCTs) on the efficacy and safety of intrathoracic infusion with KLTI in the treatment of MPE were searched from the PubMed, EMBASE, the Cochrane Library, CNKI, VIP, Wanfang and CBM databases. The primary outcome was objective remission rate (ORR). Secondary outcomes included quality of life (QOL) and incidence of adverse events (AEs). The Stata15.1 software and RevMan5.3 software were used to calculate risk ratios (RR) at 95% confidence intervals (CI) and conduct the meta-analysis.Results: This meta-analysis included 20 RCTs, involving 1,291 patients. The ORR of intrapleural infusion with KLTI + chemotherapy drugs in the treatment of MPE was higher than that of chemotherapy alone (RR) 1.23; 95%CI; 1.11–1.36, I2 = 0%, z = 3.876, p = 0.000]. When KLTI is combined with cisplatin or KLTI 200 ml is used in every time, it is more advantageous to improve ORR. Moreover, compared with intrapleural infusion of chemotherapy drugs alone, KLTI combined with chemotherapy drugs significantly improved the QOL of patients with MPE (RR 1.28; 95%CI; 1.70–1.53, I2 = 0%, z = 2.70, p = 0.007). In addition, the participation of KLTI reduced the gastrointestinal reaction (RR 0.79; 95% CI; 0.66–0.96; I2 = 0%, z = 2.37, p = 0.018) and renal damage (RR 0.468; 95% CI; 0.23–0.945, I2 = 0%, z = 2.11, p = 0.035) caused by chemotherapy drugs, but did not increase other adverse reactions (p > 0.05).Conclusion: The efficacy and safety of traditional chemotherapy drugs plus KLTI was superior to traditional chemotherapy drugs alone via intrapleural injection in controlling MPE, which suggested that KLTI can be used to treat MPE. However, a more rigorous RCT should be designed and completed before it is widely recommended.

Purpose This study aims to explore the characteristics, related factors and risk factors of insomnia of patients after operation for gastric cancer. Methods A cross-sectional survey was carried out and finally 115 patients with insomnia after operation for gastric cancer were included. The general information, gastric cancer related information, sleep quality and other symptoms were investigated. Results ①The Pittsburgh sleep quality index score of most insomnia patients after gastric cancer surgery was 11–15 points, the sleep quality rating was “Poor”. ②The sleep quality of patients with insomnia after surgery for gastric cancer is related to the number of chemotherapy cycles, fatigue and depression. ③The risk of reduced sleep quality with the number of chemotherapy cycles > 6 is 3.640 times that of ≤ 6. The risk of reduced sleep quality during moderate to severe fatigue was 4.390 times that of patients with no or mild fatigue. Conclusion Attention to related factors and risk factors may be associated with improvement of sleep quality in patients with gastric cancer after surgery.

Entrepreneurial and innovative activities are becoming a global economic and social phenomenon, especially in emerging economies. This study focuses on a typical emerging economy, China, and its entrepreneurial and innovative activities. On the basis of current research, the literature review and the chain of &ldquo, cognition&ndash, behavior&ndash, outcome&rdquo, are used for constructing the theoretical model for the relationship among entrepreneurial team cognition characteristics, behavior characteristics, and venture performance. A total of 101 valid copies of questionnaire are collected from entrepreneurial team members, as the research objects, and the structural equation modeling (SEM) method is applied to test the theoretical hypotheses. The research results reveal (1) significant effects of entrepreneurial team cognition characteristics and behavior characteristics on venture performance and (2) partial mediating effects of entrepreneurial team behavior characteristics on the relationship between cognition characteristics and venture performance. The research results are the expansion of research on entrepreneurial teams as well as the important reference for entrepreneurial team management and behavioral practice.

BACKGROUND Perioperative shivering is clinically common during cesarean sections under neuraxial anesthesia, and several neuraxial adjuvants are reported to have preventive effects on it. However, the results of current studies are controversial and the effects of these neuraxial adjuvants remain unclear. AIM To evaluate the effects of neuraxial adjuvants on perioperative shivering during cesarean sections, thus providing an optimal choice for clinical application. METHODS A systematic review and network meta-analysis were conducted following the PRISMA (Preferred Reported Items for Systematic Review and Meta-analysis) guidelines. Analyses were performed using Review Manager 5.3 and Stata 14.0. We searched PubMed, EMBASE, Web of Science, and Cochrane Central databases for eligible clinical trials assessing the effects of neuraxial adjuvants on perioperative shivering and other adverse events during cesarean sections. Perioperative shivering was defined as the primary endpoint, and nausea, vomiting, pruritus, hypotension, and bradycardia were the secondary outcomes. RESULTS Twenty-six studies using 9 neuraxial adjuvants for obstetric anesthesia during caesarean sections were included. The results showed that, compared with placebo, pethidine, fentanyl, dexmedetomidine, and sufentanil significantly reduced the incidence of perioperative shivering. Among the four neuraxial adjuvants, pethidine was the most effective one for shivering prevention (OR = 0.15, 95%CI: 0.07-0.35, surface under the cumulative ranking curve 83.9), but with a high incidence of nausea (OR = 3.15, 95%CI: 1.04-9.57) and vomiting (OR = 3.71, 95%CI: 1.81-7.58). The efficacy of fentanyl for shivering prevention was slightly inferior to pethidine (OR = 0.20, 95%CI: 0.09-0.43), however, it significantly decreased the incidence of nausea (OR = 0.34, 95%CI: 0.15-0.79) and vomiting (OR = 0.25, 95%CI: 0.11-0.56). In addition, compared with sufentanil, fentanyl showed no impact on haemodynamic stability and the incidence of pruritus. CONCLUSION Pethidine, fentanyl, dexmedetomidine, and sufentanil appear to be effective for preventing perioperative shivering in puerperae undergoing cesarean sections. Considering the risk-benefit profiles of the included neuraxial adjuvants, fentanyl is probably the optimal choice.

With the rapid development of Internet technology, the state supports greatly to apply the Internet technology to the various walks of life. The combination of the Internet + the marketing of rural tourism products is a new kind of marketing model, opening a new way for the marketing innovation of rural tourism products. Through analyzing the questionnaire results of the Internet + the marketing of rural tourism products, this paper has found out some existing related problems, and finally put forward some corresponding strategies.

Spasers can serve as a pure surface plasmon generator with a coupling efficiency to plasmonic modes approaching 100%., Spasers are a new class of laser devices with cavity sizes free from optical diffraction limit. They are an emergent tool for various applications, including biochemical sensing, superresolution imaging, and on-chip optical communication. According to its original definition, a spaser is a coherent surface plasmon amplifier that does not necessarily generate a radiative photon output. However, to date, spasers have only been studied with scattered photons, and their intrinsic surface plasmon emission is a “dark” emission that is yet to be revealed because of its evanescent nature. We directly image the surface plasmon emission of spasers in spatial, momentum, and frequency spaces simultaneously. We demonstrate a nanowire spaser with a coupling efficiency to plasmonic modes of 74%. This coupling efficiency can approach 100% in theory when the diameter of the nanowire becomes smaller than 50 nm. Our results provide clear evidence of the surface plasmon amplifier nature of spasers and will pave the way for their various applications.

Terahertz (THz) digital holography is a combination of THz technology and digital holography which has drawn wide attention. Exact measurements of real recording distances in terahertz (THz) digital holography are important. Autofocusing experimental researches have been conducted based on the holograms in THz off-axis digital holography. Five criterion functions are utilized in this paper. Autofocusing performance of these criterion functions has been analyzed and compared by changing the numbers of the superposition frames of holograms. Experiment results show that five criterion functions all have preferable autofocusing performance with the 5-frame averaged holograms; standard deviation–based correlation criterion function has the worst autofocusing performance.

The technology of terahertz (THz) is a major research area in the 21st century. THz imaging is an important research direction. The single-frequency continuous-wave THz technology is combined with coaxial reflection-mode confocal scanning microscopic imaging in this article. Under the given system parameters, the transverse response character of 2.52THz (118.83μm) coaxial reflection-mode confocal scanning microscopic imaging is emulated and analyzed. The results of emulation show that coaxial reflection-mode confocal scanning microscopic imaging is feasible in THz region.

Because of the particularity of terahertz radiation, terahertz digital holographic imaging has attracted increasing attention. Thereinto, the resolution is the key to this field. Within an inverse problem framework, the simulation on the single point resolution of 2.52 THz on-axis digital hologram at different recording distances and object positions is made in this paper. Simulation results show that the recording distance and the object position have a great influence on the single point resolution. Simulation results have important directive significance to the practical terahertz digital holographic imaging.

Ochotona curzoniae is one of the main creature calamities in Qinghai-Tibet Plateau. With the development of advanced biological recognition technologies, a new scientific method is provided for the Ochotona curzoniae's research using the automatic identification system of the Ochotona curzoniae. Image processing is one of the important procedures in the automatic identification system of the Ochotona curzoniae. In this paper, on the basis of research on traditional methods of edge detection, in order to solve the problems existed in the traditional algorithms of the edge detection in Ochotona curzoniae image, the algorithm of edge detection based on grayscale morphology is applied to the edge detection of the Ochotona curzoniae image. The results showed that the methods of edge detection based on mathematical morphology can overcome the problems existed in traditional methods of edge detection in Ochotona curzoniae image, such as noise- sensitive, no clear boundary etc, and can obtain good effect on edge detection. It is benefitial for the follow-up feature extraction and target recognition.

Ochotona curzoniae is one of the main creature calamities in the Qinghai-Tibet Plateau. With the development of advanced biological recognition technologies, a new scientific method is provided for the Ochotona curzoniae's research using an automatic identification system of this animal. But due to the relative motion between the object and the video camera, the obtained image of Ochotona curzoniae is often blurred in the process of image acquisition. The technology of image restoration can eliminate the blur of image and improve the quality of image. In this paper, on the basis of the analysis of the degradation model of motion blurred image and the restoration process of motion blurred image, the methods of image restoration of motion-blurred images of Ochotona curzoniae are studied and implemented. These motion blurred images are restored by the methods of inverse filter and Wiener filter to improve the quality of the image of Ochotona curzoniae to better carry out the follow-up feature extraction and target recognition.