Aiming at the cropping operations widely applied in practical industry production, a new method of bar cropping is presented. The rotational speeds of actuating motor of eccentric blocks are controlled by a frequency-changer, and the shearing die provides the bar with the controllable force, frequency and amplitude of vibration. By utilizing the stress concentration at the bottom of V shape groove on the bar, the low stress bar cropping is realized. The bar cropping experiments of duralumin alloy and steel show that the shear surface has no radial distortion and deviation angle, the cutting force is lower and the die life is longer compared with the common bar cropping method. According to the special feature of cutting surface obtained by the new method, a new method of measurement is proposed and applied to assess the cutting surfaces obtained by the different control curves of frequency. The results show that the linear decrease control method is the best.

To investigate the role played by 8-hydroxy-deoxyguanosine (8-OHdG) in patients with Graves'ophthalmopathy(GO),and the association between 8-OHdG and the disease activity of GO.Serum levels of 8-OHdG were tested in 48 cases with GO and 30 cases with Graves' disease(GD) without ophthalmopathy.30 healthy subjects participated in this study as controls.8-OHdG was detected by enzyme-linked immunosorbent assay (ELISA).Compared with the controls,the mean level of 8-OHdG in GO patients and GD patients was increased significantly [(2.98±1.33),(2.07±1.30) vs(0.72±0.93)ng/ml,P＜0.05].Mean 8-OHdG level in GO patients was markedly higher when compared to GD patients(P＜0.05).Pearson regression analysis showed that elevated levels of 8-OHdG were significantly correlated with the Clinical Activity Score of GO (r =0.54,P＜0.01).The serum level of 8-OHdG in GO patients was raised obviously,it implies that oxidative stress plays an important role in the pathogenesis of GO,and the serum level of 8-OHdG might act as an activity index of GO.

Objective To construct and evaluate the effects of 4C characteristic home health care services model on the health of puerperas and fetuses.Methods A total of 162 puerperas and neonates were recruited,assigned by random nember table to routine community care condition and 4C characteristic home health care condition matched on the type and degree of health condition as well as the puerperas' culture background.The health condition of puerperas and neonates were investigated and compared between the two groups 42 days after delivery.Results The incidence of breast bilges,cracked nipple,re-visit the doctor,re-admission,anxiety and depression were significantly lower in the home health care group than routine community care group [3.7％ (3/81) vs.23.5％ (19/81),2.4％ (2/81) vs.17.3％ (14/81),2.5％ (2/81) vs.16.0％ (13/81),1.2％ (1/81) vs.16.0％ (13/81),(37.35±10.72) scores vs.(41.73±10.55) scores,(39.53±13.19) scores vs.(43.94±13.44) scores,x2=21.753,18.378,8.890,11.259,t=2.621,2.108,P ＜ 0.05 or 0.01].The success breastfeeding rates,correct rate of related knowledge and master degree of newborn,self-nursing newborn skills and puerperas and relatives' satisfaction scores were significantly higher in the home health care group than routine community care group [71.6％ (58/81) vs.37.0％ (30/81),95.1％ (77/81) vs.59.3％ (48/81),91.4％ (74/81) vs.53.1％ (43/81),（92.31±3.61) scores vs.(89.83±5.43) scores,x2=21.202,29.506,29.569,t=3.423,P＜ 0.01].In additon,the rate of re-visit the doctor,re-admission and omphalitis were significantly lower in home health care group than the routine community care group [2.5％ (2/81) vs.13.6％ (11/81),6.2％ (5/81) vs.23.5％ (19/81),4.9％ (4/81) vs.22.2％ (18/81),x2=6.774,9.172,9.288,P＜0.01 or 0.05].Conclusions 4C characteristic home health care reduced the probability of breast problems and unhealthy emotions for the puerperas,reducing the severity of jaundice as well as omphalitis for fetuses,reducing the probability of re-visit the doctor and re-admission for the puerperas and neonates,which can increase patients' satisfactory and promoting the mothers and their families to master self-nursing and newborn nursing skills and the other related knowledge.

OBJECTIVE:To study the pharmacokinetics of recombinant staphylokinase(r-SAK)in a thrombosis model of femoral artery in rabbits.METHODS:Large glass plates were used for modified agar-well diffusion assay to measure r-SAK concentration in plasma of rabbits which had been administered different doses drug by different means respective?ly.RERULTS:The pharmacokinetics of r-SAK infusion in thrombosis model of the femoral artery in rabbits fits two-com?partment model,the plasma levels and the diameter of lytic circles showed a good linear correlation under the scope of20～2500IU/ml(r=0.9960),and the averaged recovery rate was(96.05?9.20)%.The peak concentrations of low,medial and high dose drop group and single iv group are(2.28?1.06),(3.54?0.32),(6.12?1.61)and(5.16?1.02)?g/ml.CONCLUSION:The biological assays is a simple,reliable method to determine the plasma level.

Objective:To comprehensively evaluate and compare the early warning system's ability to predict the risk of maternal disease in China, such as the British National Intensive Care Audit and Research Center (ICNARC)-Obstetric Early Warning Score (OEWS) system, the National Maternal Safety Early Warning Standard (MEWC) recommended by the National Coalition for Maternal Safety, the Irish Maternity Early Warning System (IMEWS) proposed in the clinical practice guidelines issued by the head of health services at the Royal Medical College of Ireland.Methods:A total of 872 pregnant women who were admitted to the Women′s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital were prospectively observed from January 2019 to December 2019. The data during hospitalization were collected to calculate the scores of the three obstetric early warning scoring systems, to compare and evaluate the prediction and identification ability of three early warning systems for critically ill pregnant women.Results:A total of 872 cases were included in this study, of which 167 were critically ill, accounting for 19.2%, and 705 were non-critically ill, accounting for 80.8%. The three obstetric early warning systems (OEWS,MEWC,IMEWS) in critical group scored 4(2, 6),3(0, 6),5(3, 6), and non-critical group scored 1(0, 1), 0(0, 0), 2(0, 3), respectively. The critical group scored significantly higher than the non-critical group ( P<0.001). The AUC of OEWS was 0.961 (95% CI 0.948-0.975, P<0.001) and that of MEWC was 0.803 (95% CI 0.757 - 0.850, P<0.001). The AUC of IMEWS was 0.853 (95% CI 0.817-0.888, P<0.001). No obstetric critical illness occurred when OEWS was 0. The positive likelihood ratio was 8.208 6 when OEWS≥6. Conclusions:Three kinds of early warning systems have good predictive ability for the occurrence of critical obstetric diseases in China. Among the three warning systems, OEWS has better predictive ability than the other two, and has better hierarchical ability. However, due to the differences in population, environment and conditions in different regions, each obstetric medical unit can improve OEWS according to its own conditions and design an obstetric early warning system that meets its own clinical needs.

Objective:This study was conducted to evaluate the roles of internal mammary sentinel lymph node biopsy (IM-SL-NB) in the treatment of breast cancer patients with clinically positive axillary lymph nodes. Methods:This study is a one-armed clini-cal research conducted from June 2013 to October 2014. A total of 64 breast cancer patients from Shandong Cancer Hospital with clini-cally positive axillary lymph nodes were enrolled in the study. All patients underwent axillary lymph node dissection. Meanwhile, IM-SLNB was performed in all patients using the new injection method of radiotracer. Results:Among the 64 enrolled patients, the visual-ization rate of internal mammary lymph node was 59.4%(38/64). For the 38 patients who were subjected to visualization of the internal mammary node, the detection rate was 100%(38/38), and the incidence of complications was 7.9%(3/38). The metastasis rate of inter-nal mammary lymph node was 21.1%(8/38). Patients with upper inner quadrant tumors and metastasis of more axillary lymph nodes had a significantly higher chance of developing sentinel lymph node metastasis (P<0.001 and P=0.017, respectively) than the other pa-tients. The clinical benefit rate of the above mentioned treatment was 59.4%. Among the patients, 12.5%(8/64) received extra internal mammary radiotherapy, whereas 46.9%(30/64) patients avoided the unnecessary internal mammary radiotherapy. Conclusion:IM-SL-NB should be performed in breast cancer patients with clinically positive axillary lymph nodes because IM-SLNB could provide the ac-curate indication of radiation to the internal mammary area, especially for the patients with upper inner quadrant tumors and those with a suspiciously high level of axillary lymph node metastasis.

Objective To explore the clinical variables associated with the shrinkage modes of primary breast tumor in women after neoadj uvant chemotherapy (NAC ), and to develop a nomogram for predicting non-concentric shrinkage mode(NCSM).Methods Sixty-one women with pathologically proven solitary invasive ductal carcinoma (ⅡA-ⅢC)were recruited. Breast specimen was prepared with PMSS, and residual tumors were microscopically outlined,scanned and registered by Photoshop CS 5 software.The 3D model of residual tumors was reconstructed with 3D-DOCTOR 4.0 software to evaluate the shrinkage mode.17 factors such as age and body mass index and menopausal status were chosen as independent variables,and the clinic-pathologic shrinkage mode was considered as dependent variable. A Logistic regression model was used to construct the nomogram. Results Primary tumor stage,lymph node down-staging, PR and mammographic malignant calcification before NAC were independent predictors of clinic-pathologic shrinkage mode (β:1.538,OR:4.656,95%CI:1.414-15.328,P=0.011;β:1.555,OR:4.735, 95%CI:1.082-20.722,P=0.039;β:-1.707, OR:0.181, 95%CI:0.044-0.741,P = 0.017;β:- 1.405, OR:3.808, 95% CI:0.06 - 0.998,P = 0.048, respectively ). The nomogram predicting the risk of NCSM showed a good concordance index(0.869),and its conformity of mean absolute error was 0.039. Conclusion Based on the clinicopathological findings of primary breast tumor, a nomogram to predict shrinkage modes after NAC in breast carcinoma patients is constructed.The statistical tool is helpful for individually selecting the patients who can be treated with BCT after NAC.

Objective:To summarize up the care experience about a woman with broad ligament haematoma after cesarean section.Methods:The clinical data of 1 case of broad ligament haematoma of uterus after cesarean section and summarized the main points of clinical nursing was reviewed. The nurse found the signs of intraperitoneal bleeding through closely observation, and it was confirmed to be a hematoma of broad ligament of uterus by B ultrasound. After removal of hematoma, the nurse strengthened the abdominal drainage and circulation monitoring to prevent re-bleeding in the abdominal cavity, nursing the fever in the process of hematoma absorption. At last, it was important to pay attention to psychological nursing, helping the maternal to live through acute period.Results:The woman was discharged on the 8 thpost-operative day. Conclusions:The nurses of obstetric should have the ability of critical thinking in clinical work, carry out postoperative monitoring strictly after cesarean section and timely find signs of internal bleeding. Through multidisciplinary rescue, a serious adverse outcome of broad ligament haematoma can be prevented.

OBJECTIVETo explore the effect of recombinant human soluble CD(40) ligand (rhsCD(40)L) and CD(40)L cDNA transfected cell (CD(40)L-TC) on the behavior of malignant B lymphocytes, and investigate the possibility of using rhsCD(40)L as a new bio-factor in tumor immunotherapy.

METHODrhsCD(40)L and CD(40)L-TC were obtained by gene recombinant techniques. Multiple myeloma cell lines, XG2, XG7, U266 and 8226, B-lymphoma cell lines, Raji and Daudi were selected to detect responses to rhsCD(40)L and CD(40)L-TC stimulation. Cell growth curve, cell cycle, early apoptosis as well as membrane surface molecules on these cell lines were analyzed.

RESULTS(1) The expression levels of CD(40) molecule on malignant B lymphocytes showed heterogeneity. High level of CD(40) on XG2, moderate on 8266, Raji, and Daudi, and no expression on U266 and XG7 were detected. The rhsCD(40)L stimulation gave rise to a typical homo-type cell aggregation of XG2 and Daudi. Meanwhile, at least 10 to 20 of CD(40)(+) XG2 or CD(40)(+) Daudi cells were found adherent to one pre-treat ed CD(40)L-TC. (2) Co-incubation with rhsCD(40)L (5 micro g/ml), or CD(40)L-TC (tumor cell: CD(40) = 5:1) resulted in a significant inhibition of in vitro cell growth of XG2, Raji and Daudi, with G(1)-phase arrest for XG2 and G(2)-phase for Raji and Daudi. These two kinds of CD(40) stimulators induced XG2, Raji and Daudi cells to apoptosis in vitro. The apoptotic rate for XG2 was 23.3% (rhsCD(40)L) and 18.8% (CD(40)L-TC), for Daudi 14.2% and 15.9%, and for Raji 11.6% and 8.9% respectively. (3) Phenotype analysis showed that CD(95) expression levels were significantly up-regulated on XG2, Raji and Daudi after stimulation with rhsCD(40)L or CD(40)L-TC, and CD(80) and CD(18) expression levels on Raji were respectively enhanced and decreased.

CONCLUSIONThe abilities to directly inhibit XG2, Daudi and Raji cell proliferation, to induce themapoptosis, as well as to up-regulate immune co-stimulator molecule CD(80) expression on Raji cells would make rhsCD(40)L a potential bio-factor for tumor immuno-therapy.

B-Lymphocytes ; drug effects ; metabolism ; pathology ; CD40 Antigens ; metabolism ; CD40 Ligand ; genetics ; metabolism ; pharmacology ; Cell Division ; drug effects ; Coculture Techniques ; DNA, Complementary ; genetics ; Humans ; Lymphoma, B-Cell ; metabolism ; pathology ; Recombinant Proteins ; pharmacology ; Time Factors ; Transfection ; Tumor Cells, Cultured ; drug effects