Objective To investigate the species and ecosystem of lepisma breeding in libraries of universities.Methods The lepisma samples were collected from the libraries of universities in Anhui by trapping bottle and chemical stimulating and the life cycle and the biocycle were observed meanwhile,from June 2005 to June 2007.Results 38 libraries were examined and 3 748 lepismas were gathered,belonging to 1 family 1 genus and 4 species.The first activity peak appeared in May,and the second in October.Lepismas were active from 20:00 to 5:00.The activity peak appeared at 24:00.This was identical with the living habits of their hiding by day and coming out at night.Conclusion The lepisma pollution in libraries of universities is serious in Anhui province and the Ctenolepisma villosa is the dominant species.

Objective To probe into the clinical application value of dynamic contrast-enhanced MR imaging (DCE-MRI) and diffusion weighted imaging (DWI) in identifying benign and malignant breast lesions.Methods 60 patients with clinically suspected breast lesions underwent MR examination.Morphologic features,early enhancement rate,time-signal intensity curve (TIC),apparent diffusion coefficient (ADC) value,as well as the differences between ADC values of the surrounding normal tissues and these of the lesions were compared and analyzed.Results The areas under the receiver operating characteristic curves (AUC) of the early enhancement rate,TIC,ADC value,ADC difference value were 0.741,0.808,0.882 and 0.959,respectively;the best diagnostic thresholds for the early enhancement rate,ADC value,and ADC difference value were 163％,1.30× 10-3 mm2/s and 0.47× 10-3 mm-2/s,respectively.The sensitivity of morphologic features,early enhancement rate,type Ⅲ curve,type Ⅱ and type Ⅲ curve,ADC value and ADC difference value in differentiating benign and malignant breast lesions was 53.1％,59.4％,43.8％,90.6％,93.8％ and 96.9％,respectively;the specificity was 85.7％,82.1％,89.3％,57.1％,75.0％ and 82.1％,respectively;the positive predictive values were 81.0％,79.2％,82.4％,70.7％,81.1％ and 86.1％,respectively;the negative predictive values were 61.5％,63.9％,58.1％,84.2％,91.3％ and 95.8％,respectively;and the accuracy was 68.3％,70.0％,65.0％,75.0％,85.0％,90.0％,respectively.Conclusion DCDMRI and DWI play important roles in differential diagnosis of benign and malignant breast lesions,among which ADC difference value is associated with the highest diagnostic capability.Combination of multiple imaging diagnostic methods is necessary to improve the diagnostic accuracy of breast lesions.

Objective To investigate the changes of urine conductivity in common kidney diseases and the relationship between urine conductivity and cystatin C.Methods A total of 723 patients in the First Affiliated Hospital of Dalian Medical University were selected in this study and divided into IgA nephropathy group(81 patients),diabetic nephropathy group(104 patients),ne-phritic syndrome group(130 patients),multiple myeloma group(89 patients),chronic glomerulonephritis group(1 1 5 patients),renal calculus group(101 patients)and chronic renal failure group(103 patients).Other 205 healthy persons were recruited into control group.The urine samples were analyzed by Sysmex automatic urinary sediment analyzer UF 1000i to determine the urine conductivi-ty,while the serum samples were analyzed by Hitachi automatic biochemical analyzer 7600 to determine the cystatin C.All the re-sults were statistically analyzed by SPSS1 9.0 software.Results The urine conductivity in kidney patients was significant lower than that of healthy people (P <0.05).There was a significant negative correlation between urine conductivity and the cystatin C in the kidney patients(P <0.05).Conclusion The urine conductivity might serve as an important index in evaluating the kidney func-tion and urine concentration.

Objective To explore the current situation of mobile phone addiction and the relationship between mobile phone addiction and impulsive behavior among nursing students .Methods Using convenience sampling, 213 students from College of Nursing in Nanjing University of Chinese Medicine were investigated by the mobile phone addiction index scale ( MPAI) and Barratt impulsiveness scale ( Chinese version BIS-11) from May 2014 to November 2014.The correlation of mobile phone addiction and impulsive behavior among nursing students was analyzed.Results Among 213 students, 18.3 percent of the students were addicted to mobile phones (39/213).In the students who were addicted to mobile phones , the BIS score was (62.05 ±7.18) ;attentional impulsivity, exercising impulsivity and unplanned impulsivity were (15.62 ±2.22),(20.92 ±3.55)and(23.21 ± 3.87)respectively, which were all higher than those in the students who were not addicted to mobile phones .The significant differences existed in the BIS score , the scores of attentional impulsivity and exercising impulsivity (P<0.05).No significant difference was found in the unplanned impulsivity ( P >0.05).Mobile phone addiction among nursing students was positively correlated with impulsive behavior , attentional impulsivity and exercising impulsivity(r=0.328,0.493,0.210;P<0.01).Impulsive behavior could effectively predict mobile phone addiction of nursing students .The forecast value was 10.3%.Conclusions Mobile phone addiction is common among nursing students .A higher level of impulsive behavior in nursing students often brings a higher level of mobile phone addiction .

Objective To investigate the safety and acute toxicities of intraoperative electron radiotherapy for patients with abdominal tumors.Methods From May 2008 to August 2009, 52 patients with abdominal tumors were treated with intraoperative electron radiotherapy,including 14 patients with breast cancer,19 with pancreatic cancer,3 with cervical cancer, 4 with ovarian cancer, 6 with sarcoma, and 6 with other tumors.Fifteen patients were with recurrent tumors.The intraoperative radiotherapy was performed using Mobetron mobile electron accelerator, with total dose of 9 - 18 Gy.In all, 29, 4 and 19 patients received complete resection, palliative resection and surgical exploration, respectively.The complications during the operations and within 6 months after operations were graded according to Common Terminology Criteria for Adverse Events v3.0 (CTC 3.0).Results The median duration of surgery was 190 minutes.Intraoperative complications were observed in 5 patients, including 3 with hemorrhage, 1 with hypotension,and 1 with hypoxemia, all of which were treated conservatively.The median hospitalization time and time to take out stitches was 12 and 13 days, respectively.And the in-hospital mortality was 4% (2/52).Twentyfour patients suffered post-operative adverse events, including 3 postoperative infections.With a median follow-up time of 183 days, 20% of patients sufferred from grade 3 to 5 adverse events, with hematological toxicities being the most common complication, followed by bellyache.Grade 1 and 2 toxicities which were definitely associated with intraoperative radiotherapy was 28% and 4%, respectively.None of grade 3 to 5 complications were proved to be caused by intraoperative radiotherapy.Conclusions Intraoperative electron radiotherapy is well tolerable and could be widely used for patients with abdominal tumors, with a little longer time to take out stitches but without more morbidities and toxicities compared surgery alone.

The application of isotope exchange can realize radiolabeling in partially aqueous media, proceed under mild reaction conditions, and exclude complex purification procedure. It is suitable for one-step labeling of sensitive biomolecules with clinical application potential. This review systematically introduces the 18F/ 19F isotope exchange reactions based on carbon and those non-carbon-based reaction centers including silicon, boron, phosphorus, sulfur, gallium and iron. Discussions of the effects on isotope exchange radiochemical yields and molar activities by different reaction types, and labeling conditions and substitute groups on classic labeled substrate are held where possible, as well as recent applications in using these methodologies to develop PET probes.

Objective: To investigate the feasibility of parameter-optimized magnetic resonance imaging (MRI) as the first choice for imaging examination in patients with acute ischemic stroke (AIS), and to assess the effects of quality improvement (QI) measures on shortening the door-to-needle time (DNT). Methods: A retrospective case-control study was conducted. A total of 69 AIS patients hospitalized at the Department of Neurology of the People's Hospital of Wuzhou from August 2015 to July 2018 were enrolled in the study, and the head MRI was used as the first choice for imaging examination. All patients received the intravenous thrombolytic therapy with recombinant tissue plasminogen activator (rt-PA). Patients with AIS undergoing intravenous thrombolysis from August 2015 to March 2017 were included in the control group, and those receiving intravenous thrombolysis after QI measures from April 2017 to July 2018 were included in the experimental group. QI included informing the stroke team in advance by emergency physicians, treatment process changing from serial procedure to the parallel one, optimization of MRI scanning parameters, and use of rapid test instruments. The MRI scanning time was compared between the two groups. The DNT of the two groups was compared, and paired-samples t test was used. The proportion of patients who underwent MRI scan and DNT<60 min was compared between the two groups, and the χ² test was used. Results: Compared with the control group, the proportion of patients undergoing MRI scan in the experimental group was increased (82% vs 58%, χ²=4.58, P=0.032); MRI scanning time was shortened (4 min 37 s vs 10 min 21 s); DNT (min) was shortened (59.32±10.19 vs 93.48±24.81, t=7.189, P<0.01); and the proportion of patients with DNT<60 min was significantly increased (68% vs 6%, χ²=27.190, P<0.01). Conclusion Parameter-optimized MRI as the first choice for imaging examination in AIS patients with the onset time <4.5 h was feasible, and the DNT was significantly shortened by QI measures.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.