ABSTRACT Springback is the reverse elastic deformation produced by the unloading process, which is a common phenomenon in the sheet metal stamping and forming process and affects the final forming accuracy of the part. Aiming at the problem of springback error in the multi-point forming process of hyperbolic component for ships, the springback phenomenon of hyperbolic component was studied by combining theoretical analysis, numerical simulation and forming test. The mechanical property parameters and stress-strain curves were obtained by tensile tests using a new corrosion-resistant aluminum alloy as the sheet material. The springback compensation method is introduced, the springback compensation formula based on surface curvature is derived, and the compensated mold surface is further corrected and fitted using the cubic B-sample method. The multi-point punch tooling was generated and modeled by the multi-point 3D modeling software MPFCAD and finite element software to simulate the multi-point forming and unloading springback process of the hyperbolic member. Multi-point forming tests were conducted on a multi-point forming press for corrosion-resistant aluminum alloy hyperbolic component, and the formed parts were checked for accuracy and error analysis by 3D scanning and GOM Inspect software. The results show that the springback compensation method used in this paper can effectively reduce the springback error in the multi-point forming process of corrosion-resistant aluminum alloy hyperbolic component, and the effect is very good. part multipoint multi point ships test stressstrain stress strain corrosionresistant corrosion resistant material introduced derived Bsample B sample D member Multipoint Multi good

Background The objective of this study was to compare the level differences of mRNA transcription and protein expression of PPARγ, FAS and HSL in different parts of the carcass in different tail-type sheep. Six Tan sheep and six Shaanbei fine-wool sheep aged 9 months were slaughtered and samples were collected from the tail adipose, subcutaneous adipose, and longissimus dorsi muscle. The levels of mRNA transcription and protein expression of the target genes in these tissues were determined by real-time quantitative PCR and western blot analyses. Results The results showed that PPARγ, FAS, and HSL were expressed with spatial differences in tail adipose, subcutaneous adipose and longissimus dorsi muscle of Tan sheep and Shaanbei fine-wool sheep. Differences were also observed between the two breeds. The mRNA transcription levels of these genes were somewhat consistent with their protein expression levels. Conclusion The present results indicated that PPARγ, FAS and HSL are correlated with fat deposition, especially for the regulating of adipose deposition in intramuscular fat, and that the mRNA expression patterns are similar to the protein expression patterns. The mechanism requires clarification in further studies.

Background The objective of this study was to investigate proliferator-activated receptor (PPARγ), fatty acid synthase (FAS) and hormone-sensitive lipase (HSL) mRNA and protein expression in fat tails of Tan sheep. Rams from different developmental stages (aged 3, 6, 9, 12, 15 and 18 months) were selected, and their tail measurements including length (L), width (W) and girth (G) were recorded. The mRNA and protein expressions of PPARγ, FAS and HSL were examined by quantitative real-time polymerase chain reaction (PCR) and Western blot. Results The tail measurements increased with age. We observed no significant differences (P > 0.05) of PPARγ mRNA expression between ages 9 and 15 months, and between 12 and 15 months; FAS mRNA expression levels at each developmental stage were observed significantly in Tan sheep (P < 0.05); HSL mRNA expression with no significant differences were only observed between 6 and 15 months (P > 0.05). Significant differences (P < 0.05) of PPARγ, FAS and HSL protein expressions at each developmental stage were observed in Tan sheep. Conclusion We observed that the mRNA expression patterns of PPARγ and FAS decreased first before they increased again and then this process repeated. Conversely, the mRNA expression patterns of HSL increased first before they decreased and then this process repeated. The protein expression patterns of PPARγ and FAS decreased first before they increased again and then this process repeated. Conversely, the protein expression pattern of HSL increased first before it decreased again and then increased again.

Multidrug resistance (MDR) poses a serious impediment to the success of chemotherapy for laryngeal cancer. To identify microRNAs and mRNAs associated with MDR of human laryngeal cancer Hep-2 cells, we developed a multidrug-resistant human laryngeal cancer subline, designated Hep-2/v, by exposing Hep-2 cells to stepwise increasing concentrations of vincristine (0.02-0.96'µM). Microarray assays were performed to compare the microRNA and mRNA expression profiles of Hep-2 and Hep-2/v cells. Compared to Hep-2 cells, Hep-2/v cells were more resistant to chemotherapy drugs (∼45-fold more resistant to vincristine, 5.1-fold more resistant to cisplatin, and 5.6-fold more resistant to 5-fluorouracil) and had a longer doubling time (42.33±1.76 vs 28.75±1.12'h, P<0.05), higher percentage of cells in G0/G1 phase (80.98±0.52 vs69.14±0.89, P<0.05), increased efflux of rhodamine 123 (95.97±0.56 vs 12.40±0.44%, P<0.01), and up-regulated MDR1 expression. A total of 7 microRNAs and 605 mRNAs were differentially expressed between the two cell types. Of the differentially expressed mRNAs identified, regulator of G-protein signaling 10, high-temperature requirement protein A1, and nuclear protein 1 were found to be the putative targets of the differentially expressed microRNAs identified. These findings may open a new avenue for clarifying the mechanisms responsible for MDR in laryngeal cancer.

OBJECTIVE: The Global Campaign Against Epilepsy demonstration project in rural China aimed: to reduce the treatment gap and morbidity of people with epilepsy by using community-level interventions; to train and educate health professionals; to dispel stigma; to identify potential for prevention and to develop models of integration of epilepsy control into the local health systems. We report the overall results of the demonstration project, focusing on the prevalence and the change in the treatment gap of epilepsy after an intervention. METHODS: Door-to-door epidemiological surveys were carried out before, and 6 months after the end of, an intervention project for epilepsy in rural settings in five provinces of China. The intervention consisted of a treatment programme available to patients without prior appropriate treatment and a public health educational programme about epilepsy. The sampled population in the second survey was 51 644 people. FINDINGS: In the second survey, epilepsy was confirmed in 320 people, yielding a lifetime prevalence of 6.2/1000 and a prevalence of active epilepsy of 4.5/1000. The lifetime prevalence and prevalence of active epilepsy in the first survey were 7.0/1000 and 4.6/1000, respectively. The treatment gap of active epilepsy in the second survey was 49.8%, 12.8 percentage points lower than that of the first survey (62.6%). CONCLUSION: The results of this study suggest that the intervention measures used were possibly effective and evidently feasible in rural China, contributing to a decrease in the treatment gap of epilepsy.

OBJETIVO: El proyecto piloto de la Campaña Mundial Contra la Epilepsia en la China rural se propuso los siguientes objetivos: reducir la brecha de tratamiento y la morbilidad de las personas con epilepsia aplicando intervenciones comunitarias; capacitar y educar a los profesionales de la salud; combatir la estigmatización; identificar las posibilidades de prevención, y desarrollar modelos de integración del control de la epilepsia en los sistemas de salud locales. Se informa aquí de los resultados globales del proyecto piloto, haciendo hincapié en la prevalencia y en la variación de la brecha de tratamiento de la epilepsia después de una intervención. MÉTODOS: Se llevaron a cabo encuestas epidemiológicas domiciliarias antes de iniciar y a los 6 meses de finalizar un proyecto de intervención contra la epilepsia en entornos rurales de cinco provincias de China. La intervención consistió en un programa terapéutico ofrecido a los pacientes sin tratamiento previo apropiado y un programa de educación de salud pública sobre la epilepsia. La población muestreada en la segunda encuesta fue de 51 644 personas. RESULTADOS: En la segunda encuesta se confirmó la existencia de epilepsia en 320 personas, lo que indica una prevalencia durante toda la vida de 6,2/1000 y una prevalencia de epilepsia activa de 4,5/1000. La prevalencia durante toda la vida y la prevalencia de epilepsia activa en la primera encuesta fueron de 7,0/1000 y 4,6/1000, respectivamente. La brecha terapéutica en el caso de la epilepsia activa en la segunda encuesta fue del 49,8%, un 12,8% menos que en la primera encuesta (62,6%). CONCLUSIÓN: Los resultados de este estudio parecen indicar que las medidas de intervención aplicadas fueron posiblemente eficaces y sin duda factibles en la China rural, reduciéndose en consecuencia la brecha de tratamiento de la epilepsia.

OBJECTIF: Le projet de démonstration en Chine rurale de la Campagne mondiale contre l'épilepsie avait pour objectifs : de réduire l'écart de prise en charge thérapeutique et de morbidité entre les épileptiques faisant appel à des interventions communautaires ; de former et d'éduquer les professionnels de santé ; de dissiper la stigmatisation ; d'identifier les possibilités de prévention et de développement de modèles d'intégration de la lutte contre l'épilepsie dans les systèmes de santé locaux. Nous rendons compte des résultats globaux de ce projet de démonstration, en nous concentrant sur la prévalence et l'évolution du déficit de traitement de l'épilepsie après une intervention. MÉTHODES: Des enquêtes épidémiologiques «porte à porte» ont été effectuées avant et 6 mois après un projet d'intervention concernant l'épilepsie dans des zones rurales de cinq provinces chinoises. L'intervention con sistait en un programme de traitement proposé aux patients n'ayant bénéficié auparavant d'aucun traitement approprié, et en un programme d'éducation en santé publique concernant l'épilepsie. La population échantillonnée dans la seconde enquête comprenait 51 644 personnes. RÉSULTATS: Dans la seconde enquête, l'épilepsie a été confirmée chez 320 personnes, ce qui donne une prévalence sur la durée de vie de 6,2/1000 et une prévalence de l'épilepsie active de 4,5/1000. Dans la première enquête, la prévalence sur la durée de vie et la prévalence de l'épilepsie active étaient respectivement de 7,0/1000 et de 4,6/1000. Le déficit de traitement de l'épilepsie active dans la seconde enquête était de 49,8 %, soit 12,8 % de moins que dans la première enquête (62,6 %). CONCLUSION: Les résultats de cette étude laissent à penser que les mesures d'intervention utilisées pouvaient être efficaces et étaient à l'évidence applicables en Chine rurale, où elles ont contribué à une diminution du déficit de traitement de l'épilepsie.