At present, with the development of science and technology, a lot of new technologies have been developed, which has brought great convenience to people's lives. Face recognition technology is a very innovative technology. Therefore, in the field of computer science, professionals have been studying the related technologies. And the technology has been applied in the fields of industry and biology. In this paper, a deep analysis of the theory of face recognition was made. Through the gabor wavelet and memetic ecological algorithm, the technology was further studied.

In this article, the effect of direct current electric field on the phenol biodegradation by laccase was studied. The results showed that the DC electric field could enhance the biodegradation activity of laccase. Specifically, the rate of phenol biodegradation when catalyzed by laccase was significantly higher in the presence of the DC electric field than in its absence. In the presence of the DC electric field, the biodegradation rate of phenol which catalyzed by laccase was 98.6%, and the phenol concentration in the residual solution was below 0.7 mg/L after 96 h. In the absence of the electric field and with laccase, the biodegradation rate of phenol laccase was 81.7%, and the phenol concentration in the residual solution was 9-10 mg/L after 96 h. Therefore, the combination of DC electric field and laccase is likely to create a stable, simple and environmentally friendly biodegradation system.

Introduction: Moyamoya disease is a progressive, chronic occlusive vascular disease of the circle of Willis arteries leading to the development of collateral circulation to compensate the occlusion. Purpose: This study aims to investigate the potential causes and clinical and imaging characteristics of Moyamoya Disease (MMD) in children. Methods: A retrospective analysis was performed on the clinical data of 14 MMD children, in which the potential causes were analysed, and the clinical and imaging characteristics were observed. Results: The average patient age was 6.15 y (range 21 months-13 y), and the female/male ratio was 1.3:1.0. There were 332 cases of ischemia and 196 hemorrhages. Eight cases had inducing factors including five cases of upper respiratory tract infection. Twelve cases exhibited limb weakness or hemiplegia. Among these patients, eight cases developed these manifestations as initial symptoms. Furthermore, seven cases presented language barriers, two cases had twitch, and two cases had headaches with unclear vision. All 14 patients underwent cranial Magnetic Resonance Imaging (MRI) and the results revealed that twelve cases had cerebral infarction, and two cases had cerebral hemorrhage. Five of 14 patients experienced stenosis or occlusion at the siphon part of the bilateral internal carotid arteries, seven patients had bilateral anterior cerebral artery stenosis or occlusion, 8 were bilateral middle cerebral artery stenosis or occlusion, and 2 were bilateral posterior cerebral artery stenosis or occlusion. All patients smoke-like vessels in the basal ganglia region. Conclusion: High-risk age of child MMD ranged between 4-10 y old, which mostly manifested as transient cerebral ischemic insults; and inducing factors were mostly upper respiratory tract infections.

Objective: To determine the efficiency of granulocytes and monocytes upon radiotherapy in Saudi females with breast cancer. Method: Samples from fifteen Saudi females with breast cancer and 30 control samples were included in this study. Functions of specific granulocytes and monocytes were examined by Phagotest, and data were analysed by FACS Calibur flow cytometer. These investigations were performed for control and patient groups after obtaining three different samples: pre-radiotherapy (pre-RT), immediately after completing the radiotherapy course, and six weeks following the completion of the radiotherapy course. Patients’ biochemical tests including those for blood sugar, total bilirubin, alkaline phosphatase, aspartate transaminase, alanine transaminase, blood urea nitrogen, and creatinine levels, were assessed to evaluate their health status pre-RT. In addition, the correlation between each of the total doses and volume of an irradiated area with complete blood count (CBC) and the phagocytic functions of granulocytes and monocytes were studied. Results: The following changes were observed: (1) at pre-RT baseline, the changes in CBC and monocytes’ phagocytic activities were non-significant; significant decrease was found in granulocytes’ phagocytic percentages and geographic mean (GMs); (2) at the end of RT, a significant reduction occurred in total white blood cell counts, platelets, lymphocytes count, and a significant increase in red blood cell counts, hemoglobin level, and granulocytes’ phagocytic GMs; (3) after 6 weeks, changes in CBC and phagocytic activities of granulocytes and monocytes were non-significant. Conclusion: Saudi breast cancer patients might be at hematological and immunological risk following RT. Therefore, the follow-up of such patients needs to include the assessment of phagocytic activities besides CBC.

A novel series of arylidiene, isoxazole, pyrazolines, and their derivatives 2-8 were synthesized by using estrone (3-hydroxyestran-17-one, 1) as starting material. Some of the synthesized compounds were screened as follicle-stimulating hormone (FSH) agents. The synthesized compounds were illustrated by elemental analysis and spectroscopic evidences.

Objective: To observe the expression of heparanase (HPA) in human astrocytomas tissue and its effect on invasiveness of tumor cells. Methods: Immunohistochemical Elivision™plus two step method and Realtime-PCR method were used to detect the expression of HPA protein and mRNA in 75 cases of astrocytoma tissues and 40 cases of normal brain tissues. Silencing HPA expression in astrocytoma U87 cells by siRNA interference technique, and adopting Realtime PCR, Western blot, Transwell chamber experiment, the expression and cell invasiveness change of tumor cells HPA, vascular endothelial growth factor (VEGF), matrix metalloproteinase -9 (MMP.9) were detected. Results: The expression of HPA protein was not found in normal brain tissues, HPA positive expression rate in astrocytoma tissues was 78.67% (59/75), and the positive expression rate of HPA in astrocytoma tissues was significantly higher than that in normal brain tissues, and its expression level of mRNA was significantly higher than that in normal brain tissues, the difference of which was statistically significant (χ2=67.8, P<0.05). The positive expression rate of HPA in grade II to IV group of astrocytoma increased gradually, the difference of which was statistically significant (χ2=131.5, P<0.05); the positive expression rate of HPA in metastasis group was significantly higher than that in non-metastasis group (χ2=89.3, P<0.05). SiRNA can effectively inhibit the expression of HPA in astrocytoma U87 cells, and down regulate the expression of VEGF, MMP-9, at the same time the number of transmembrane cells decreased significantly, and the difference was statistically significant (P<0.05). Conclusion: HPA is highly expressed in astrocytomas tissues, and with the increase of malignancy of tumor, the expression increases gradually. The cell invasiveness decreased significantly after siRNA silenced HPA, and HPA might be a potential target for the treatment of astrocytomas.

Considering the great significance of proper clinical education in training nurses qualifying for provision of quality care, this study has been conducted with the aim of investigating the obstacles against clinical education among the nurses. In this systematic review study, international databases (PubMed, Web of Science, Scopus, CINHAL, EMBASE, ERIC, Google scholar, as well as national banks including Magiran and SID) were searched from the time of inception until January 30, 2018. The obstacles of clinical education in individual areas (associated with students (Lack of motivation in students), professors (Absence of experience professor with a high academic level), and nurses (Personnel uncooperativeness)), managerial (Shortage of time), facilities (Deficit of facilities and working conditions), structures, and other areas were identified. Based on the obstacles identified across various dimensions, proper plans and strategies should be designed and implemented with each of the obstacles to enhance the quality of clinical education.

Our objective is to explore and analyse the effect of social medical security on residents' health and economic burden of diseases. We analysed the national data of China to figure out the impact of medical security on the residents' health and the economic burden of disease. The investigation found that reasonable medical security played a key role in residents' health; with the improvement of medical security policies and the increase of government’ investments, the residents paid much less for their diseases, reducing their economic burden. After generalizing the previous studies, it is not hard to find that a sound medical security improves the health of people and eases the economic burden of disease in positive, but some people don’t agree with it for its lack of evidences.

Background: Arsenic Trioxide (As2O3) is a FDA-approved agent for the treatment of Acute Promyelocytic Leukemia (APL). But the high-toxicity is a bottleneck of the effect of As2O3. Methods: In our previous work, we made a novel nanoparticle formulation of As2O3. The aim of the present study was to preliminary study the possible mechanisms of the antitumor effect of As2O3 nanoparticles on NB4 cells. We examined the proliferation and apoptosis of NB4 cells incubated with the As2O3 or As2O3 nanoparticles. Protein levels of p-PTEN, p-AKT, Bax, caspase-3, caspase-9 and AIF of NB4 cells after using As2O3 nanoparticles and traditional As2O3 were determined by Western blotting analysis. Results: In vitro cytotoxicity test showed that the inhibition rate and apoptosis level of NB4 cells treated with As2O3 nanoparticles was much higher than that of traditional As2O3. Moreover, As2O3 nanoparticles resulted in a more significant increase in p-PTEN expression and a greater reduction in p- Akt expression compared with traditional As2O3. Conclusions: Our findings indicated the obvious anticancer effect of As2O3 nanoparticles and demonstrate the possible mechanism of its therapeutic potential. The results provide a foundation for the future clinical studies of As2O3 nanoparticles in APL patients.

A procedure which has a tendency to find the micro aneurysms and hemorrhages in shading color fundus picture utilizing computerized or semi-mechanized divisions for vein division in fundus structure upheld by a discriminatively prepared, completely associated contingent irregular field demonstrate. Since it has high exactness it is prudent and checks by its size thus utilized as a part of early discovery, analysis and treatment. Since Image division assumes a basic part in numerous therapeutic applications. The objective of this research or to conquer the issue a restrictive irregular field demonstrates with a ton of open possibilities, exploiting ongoing outcomes sanctionative intelligent reasoning of completely associated models for all intents and purposes continuously. The proposed framework method which is a six stage process from spatial adjustment till classification is expected to improve the information pictures taken for activity. By following this sort of system early recognition of the variations from the norm made without the loss of the blood tests every last time that happens while checking for the irregularity. The outcomes show the solid execution of the proposed strategy in recognizing the micro aneurysms and hemorrhages in fundus pictures of various determination and quality and from various securing frameworks. Additionally work concentrating on splendid injury and neo vessel location will finish the proposed framework effectively than other existing methods.