The measures taken by Library of Southern Medical University to improve the use of its electronic re-sources were described according to the major problems in use of electronic resources in domestic college and uni-versity libraries from resources assessment, resources integration and revealing, resources popularization and librarians support, with certain rational suggestions proposed for increasing the utilization ratio of electronic resources, inclu-ding popularization of resources, training of user information literacy, and improvement of users ability.

OBJECTIVE:To provide reference for the improvement of supervision system of online drug sale in China. METH-ODS:Usingonline pharmacyonline drugstoreinternet drugssupervisionas keywords,CNKI,Wanfang database from Jan. 2015 to Jan. 2016 and related websites were retrieved,experience about legislation,legal provisions and regulatory bodies in the United States,Britain,Germany and other countries were summarized. The problems existing in the current supervision system in China were analyzed,and related suggestions were proposed. RESULTS & CONCLUSIONS:The legal system of the online drug sale in the United States,Britain,Germany and other countries is more complete,legislation content is relatively perfect,pay-ing attention to the combination of administrative supervision and industry supervision. The supervision system of online drug sale in China exists problems as follows as legislation level relatively lower,conflict between laws and regulations;the legislation con-tent being not perfect,contents missing or provisions blur in many aspects;law enforcement existing in the government depart-ments,industry regulation being weak and others. It is suggested that the country should develop high-order law when improving the supervision system of online drug sale,modifying the existing law or promulgating the relevant specialized laws by legal form rather than regulations and rules;develop clear,actionable law and learn from foreign related systems (such as electronic evi-dence,blacklist)to improve legal contents;and further clear the powers and responsibilities of the regulatory authorities,actively develop industry associations(such as pharmaceutical association,etc.)to conduct supervision for online drug sale.

Objective: To investigate the effect of psychological intervention on mental health status in women who accepted artificial abortion.Methods: 576 cases of women accepted artificial abortion were randomly divided into psychological intervention group and control group,and evaluated their psychological state before artificial abortion and at first visit with SCL-90.Results: Compared with control group,psychological intervention group had obvious improvement in mental health states(P

Objective To investigate the clinical and computed tomography (CT) features of lung isolated ground-glass opaci-ty and to analyze the predictive factors that may discriminate benign from malignant nodules .Methods Clinical features , CT charac-teristics, pathological diagnosis , and the follow-up results were retrospectively analyzed with 108 cases of isolated ground-grass opacity (GGO) that was confirmed by histopathology from January 2011 to March 2013.Results A total of 108 isolated GGOs [52 men,56 women,mean age (58.12 ±10.34)years] included 19 benign nodules and 89 malignant nodules.The diversity of age, gender, clini-cal symptom, margin (speculation, spine-like process), internal characteristics (ovule sign, air bronchograms) of the lesions were no statistically significant differences between benign and malignant GGOs ( P >0.05 ) .The lymphocyte and CT findings of shape , lobu-lation, interface (ill/well defined) and pleural indentation sign were significantly different between benign and malignant GGOs ( P <0.05 ) .Besides significant difference in pleural indentation sign was also found between bronchioalveolar carcinoma and adenocarcino -ma ( P =0.0252).Among the 44 patients who were followed up after finding GGO initially , there were 7 GGOs (7/44,15.91%) to grow up after 3years, and GGOs of 32 patients had no obvious change , besides the patients'age of malignant GGO was bigger than the benign( P =0.0416).Conclusions Clinical features were of little value to discriminate the benign from malignant GGOs .CT fea-tures including round/oval shape, lobulation, and well defined and pleural indentation sign were of important value in the diagnosis of malignant GGO .Surgical resection should be applied in the process of follow-up when the sizes of GGO become bigger or newly formed solid components were detected .GGO that can't be diagnosed should be followed up for at least 3 years.

Objective To compare the clinical efficacy between endoscopic thyroidectomy via breast approach and conventional open thyroidectomy in patients with nodular goiter.Methods A series of 75 patients with unilateral nodular goiter was divided into two groups,either receiving endoscopic thyroidectomy through breast approach(Endoscopic Group,24 cases)or conventional open thyroidectomy(Open Group,51 cases).The therapeutic efficacy was compared between the two groups.Results In the Endoscopic Group,the endoscopic operation was successfully performed in 23 cases,whereas a conversion to open surgery was needed in 1 case because of large nodule(6 cm in diameter)and extensive adhesion of infrahyoid muscles(resulted from a previous injection therapy).The operating time was significantly longer in the Endoscopic Group(100.4?26.6 min)than in the Open Group(73.5?14.5 min)(t=5.627;P=0.000).The postoperative drainage volume in the Endoscopic Group(66.7?24.9 ml)was significantly more than that in the Open Group(13.3?6.4 ml)(t=14.403,P=0.000).The postoperative hospital stay was significantly longer in the Endoscopic Group(4.3?1.1 d)than in the Open Group(3.6?0.9 d)(t=2.886;P=0.005).The Endoscopic Group had significant higher hospital costs(11 572?1675.1 yuan)than the Open Group(5015.9?1211.0 yuan)(t=19.058;P=0.000).And a satisfactory cosmetic result was achieved in significantly more patients in the Endoscopic Group(22/24 cases)than in the Open Group(34/51 cases)(?2=7.235;P=0.007).There was no significant difference in intraoperative blood loss between the Endoscopic Group(22.5?15.3 ml)and the Open Group(18.3?7.5 ml)(t=1.273;P=0.207),and in consumption of analgesics between the Endoscopic Group(9/24 cases)and the Open Group(21/51 cases)(?2=0.028;P=0.867),respectively.No severe complications were encountered,such as massive hemorrhage,injuries of the recurrent or superior laryngeal nerve,or parathyroid gland injury.During a follow-up for 6 months,none of the patients was found recurrence after surgery.Conclusions Both breast approach endoscopic thyroidectomy and conventional open thyroidectomy are safe and effective.The former gives better cosmetic outcomes but slower recovery and high hospital costs compared to the latter.

Objective To explore the related factors influencing the condensate infection level in order to provide a reference for ventilator pipe care and reducing condensate infections.Methods A total of 80 patients using ventilator in ICU of the First Hospital of Liaoning Medical University was chosen as the research object,and the related factors influencing the condensate infection using correlation and regression analysis method were explored,and the regression model was estabhshed as well.Results Condensate infection were correlated with pipe length (r=0.837,P＜0.01),temperature difference between ward and gas in the pipe (r=0.875,P＜0.01),exhaled gas humidity (r=0.793,P＜0.01) and ventilation (r=0.932,P＜0.01),but the pipe length could not enter the regression equation (t=-0.09,P＞0.05),and the regression equation was y=-168.08 +9.96x1 (temperature difference) +0.33x2 (exhaled gas humidity) +20.98x3 (ventilation).Conclusions Pipe length,temperature difference between ward and gas in the pipe,exhaled gas humidity and ventilation were the influencing factors,and medical personnel can control the infection of condensate considering the influencing factors.

Mild stroke refers to ischemic stroke with mild neurological defects.In recent years,its incidence rate has increased gradually.However,there is no standardized definition for mild stroke,and there is a great controversy about whether to conduct thrombolytic therapy for mild stroke.The conventional wisdom holds that the patients with mild stroke should not be treated with intravenous thrombolysis;however,many studies have indicated that the short-term and medium-term outcomes are poor in patients with mild stroke without receiving thrombolytic therapy,and many patients with mild stroke may benefit from thrombolytic therapy.This article summarizes about the definition of mild stroke and the clinical studies of thrombolytic therapy in recent years,hoping to provide reference for clinicians in order to make better clinical decisions.

ObjectiveTo explore the correlation of unknown gene AI408225 and humoral immunity involved in rat regenerating liver. MethodsIsolation of rat 8 liver cell types, detection of their genes expression change were accorded to Percoll density gradient centrifugation combined with immune magnetic beads separation method, and their genes sequence homoeology and coexpression relation were analyzed by Microsoft Excel, BLAST software, and the prediction physiological activities were analyzed by bioinformatics and systematic biology. Results A total of 93 humoral immunity-ass ociated genes yielded the meaningful expression changes in liver regeneration, the corresponding gene numbers in 8 liver cell types included hepatocytes, bile duct epithelial cells, oval cells, hepatic stellate cells, sinus endothelial cells, Kupffer cells, pit cells and dendritic cells were 33, 46, 17, 59, 48, 35, 53, 68. Among that AI408225 and cd4 are homology and coexpression.Conclusion The rat liver regeneration is closely associated with humoral immunity, and AI408225 participates in the formation of compound of MHC II-antigen peptide-CD4-TCR.

Objective:To investigate the protective effect of intratracheal transplantation of different dose of human umbilical cord mesenchymal stem cells (MSCs) in rats with acute lung injury induced by severe burns.Methods:Seventy-five male Wistar rats were randomly divided into five groups:Sham(group A),Saline group(group B) and different doses of hUMSCs transplantation groups(C,D and E).The dosage ofhUMSCs was 1 × 105,5 × 105 and 1 × 106 respectively.Rats inflicted by 50 ％TBSA Ⅲ degree scalding employed as the model.After modeling,rats in group B and transplantation groups were immediately fluid resuscitated.Transplantation groups were intratracheally administered different dose hUCMSCs (0.2 mL),and group B were given normal saline in the same dose intratracheally.The lung tissue samples were collected on day 1,day 3 and day 7 after administration.HE staining was used to observe the pathological changes of lung tissue.MPO and CD68 immunohistochemical staining were used to observe the positive expression of neutrophils and macrophages in lung tissue.Results:Lung pathology showed that alveolar cavity was clear,alveolar structure integrity,occasionally a small amount of inflammatory cells of group A at each time point.At 1 day after scald,group B and the transplantation group (group C,D,E)the alveolar septum was thickened,and there was visible pulmonary capillary hyperemia,as well as a large amount of inflammatory cell infiltrations in the pulmonary capillaries and alveolar space.At 3 day,group B and the transplantation group alveolar structural damage,pulmonary hemorrhage and inflammatory cell infiltrations were better than those in 1 day.Compared with group B,the alveolar structure was clear and the septum was thinner,but there was no significant difference between the transplantation groups.On the 7 day after scald,the lung injury in the transplanted group was significantly less than group B,and the recovery of the injured lung tissue in E group was the most obvious.The number of the MPO positive cells increased significantly on the first day after scald (P ＜0.05) compared with group A,but there was no significant difference between the two groups.Compared with B group,the number of positive cells in transplantation group was significantly reduced at 3 and 7 day after scald,(P＜0.05),and the number of positive cells in group E was significantly lower than other groups (P＜0.05).CD68 staining showed a significant increase in positive cells in each group on day 1 (P＞ 0.05).The number of positive cells decreased in 3 day after transplantation (P＜0.05),but there was no significant difference between the transplantation groups.The number of positive cells in transplantation group was significantly lower than group B (P＜0.05) after 7 day.Compared with group C and D,there was significant difference in group E (P＜0.05).Conclusions:Intratracheal transplantation of different dose hUCMSCs have protective on severe burns induced acute lung injury models;the protection mechanisms may be that the hUCMSCs transplantation can inhibit the invasion of the inflammatory cells in lung tissues,and the optimal dosage is 1 × 106.

Objective To study the expression of CDK4 andβ-Catenin and their relevance in glioma. Methods We used immunohistochemistry to detect the expression of CDK4 andβ-Catenin in forty-five glio-ma tissues and eight normal tissues.According to the classification standard of WHO in 2000 classify and grade the tissues.Results There were significant differences of CDK4 andβ-Catenin expressions between normal tis-sues and glioma tissues(P<0.01).The expression of CDK4 and β-Catenin had positive correlation with the pathological grades of glioma and histological type and increased(P <0.05).Furthermore,the expression of CDK4 was positively correlated with the expression ofβ-Catenin in glioma(r=0.52,P<0.01).Conclusion The increased expression of CDK4 andβ-Catenin may have correlation with malignant change of glioma and oc-curance of glioblastoma,and their combination is expected to become an important indicator in assessing malignant glioma.