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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science Vol. 234, No. 21 ( 2020-11), p. 4200-4214
    In: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, SAGE Publications, Vol. 234, No. 21 ( 2020-11), p. 4200-4214
    Abstract: Aiming at the aircraft composite skin grinding, a new three degree-of-freedom (DOF) parallel mechanism with asymmetrical structure (TAM) is proposed to replace manual grinding. The TAM is achieved by integrating one of active limbs into the passive limb while keeping the required DOF unchanged, which is divided into two closed-loop chains: telescopic rod and parallelogram. The inverse kinematics models of the two chains are established according to closed-loop vector method. Thus, the actuation and the constraint Jacobian matrix are obtained. Based on the perturbation principle, the error modeling of the TAM is built. Adopting the constraint Jacobian matrix, 15 uncompensated errors are distinguished from the error model. In order to improve the working accuracy of the TAM, accuracy analysis and synthesis are necessary for all the uncompensated errors. The mapping function reflects the influence of uncompensated errors on the pose accuracy. The global sensitivity evaluation indexes are established by mapping function. Since Sobol sequences are superior in uniformity and convergence, the Quasi-Monte Carlo method based on Sobol sequences (Sobol-QMC) is introduced for sensitivity analysis. Taking the minimum manufacturing and installation costs as the optimization target, the objective function of accuracy synthesis is constructed. Ultimately, the reasonable tolerance zone of each uncompensated error is calculated by genetic algorithm. Simulation is performed by Sobol-QMC to verify the rationality of the optimization. The results show the probability is above 97% where most pose errors are in [[Formula: see text], [Formula: see text]] within the workspace. Therefore, accuracy synthesis is correct and practical.
    Type of Medium: Online Resource
    ISSN: 0954-4062 , 2041-2983
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2024890-8
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  • 2
    In: European Stroke Journal, SAGE Publications
    Abstract: Venous outflow (VO) is emerging as a marker of microvascular integrity in acute ischemic stroke. Using hemorrhagic transformation (HT) and infarct growth as mediators, we tested whether a favorable VO profile benefited functional outcome by reducing consequences of microvascular dysfunction. Patients and methods: Patients receiving thrombectomy in three comprehensive stroke centers due to acute anterior circulation occlusion were included. VO was assessed semi-quantitatively by the opacification of ipsilateral vein of Labbé, Trolard and superficial middle cerebral vein. HT was graded on follow-up CT. Infarct growth volume (IGV) was the difference of final infarct volume and baseline core volume. The association of VO and functional independence (90-day modified Rankin Scale ⩽ 2) was examined by logistic regression. Mediation analysis was performed among VO, HT or IGV, and functional outcome in patients with or without recanalization, respectively. Results: In 242 patients analyzed, VO was strongly correlated with functional independence and VO ⩾ 4 was defined favorable. In 175 patients recanalized, favorable VO was associated with a reduced risk of HT (OR = 0.82, 95% CI 0.71–0.95, p = 0.008), which accounted for 13.1% of the association between VO and favorable outcome. In 67 patients without recanalization, favorable VO was associated with decreased IGV (β = −0.07, 95% CI −0.11 to −0.02, p = 0.007). The association of favorable VO and functional independence was no longer significant (aOR = 4.84, 95% CI 0.87–38.87, p = 0.089) after including IGV in the model, suggesting a complete mediation. Discussion and Conclusion: In patients with acute anterior large vessel occlusion, the clinical benefit of VO may be mediated through reduced microvascular dysfunction.
    Type of Medium: Online Resource
    ISSN: 2396-9873 , 2396-9881
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2024
    detail.hit.zdb_id: 2851287-X
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 2021
    In:  Trauma, Violence, & Abuse Vol. 22, No. 5 ( 2021-12), p. 1326-1338
    In: Trauma, Violence, & Abuse, SAGE Publications, Vol. 22, No. 5 ( 2021-12), p. 1326-1338
    Abstract: To evaluate the neglect of left-behind children (LBC) in China. Method: Participants: Children separated from one or both parents for at least 6 months. Intervention: Trauma of separation. Comparison: Non-left-behind children (NLBC). Outcomes: Neglect rates and severity. Only case–control studies were included. Results: Thirteen studies were included; there were 18,688 LBC in a large sample ( N = 42,003) of children aged 0–18 years in China. The overall neglect rate was significantly higher in LBC compared to NLBC (odds ratio [ OR] = 1.58, 95% confidence interval [CI] = [1.50, 1.67], p 〈 .01) based on the Chinese Rural Child Neglected Evaluation Model (CRCNEM) and the Parents–Child Conflict Tactics Scales ( OR = 1.44, 95% CI [1.35, 1.54], p 〈 .01). The overall neglect severity in LBC was also significantly higher than NLBC ( SMD = 0.31, 95% CI [0.28, 0.33], p 〈 .01). The same trends were observed in sex subgroups. With regard to subtypes, LBC were significantly more likely to have emotional neglect ( OR = 2.29, 95% CI [1.88, 2.78], p 〈 .01), medical neglect ( OR = 1.79, 95% CI [1.62, 1.98], p 〈 .01), physical neglect ( OR = 1.75, 95% CI [1.60, 1.91], p 〈 .01), security neglect ( OR = 1.52, 95% CI [1.32, 1.75], p 〈 .01), educational neglect ( OR = 1.50, 95% CI [1.31, 1.72], p 〈 .01), and social neglect ( OR = 1.33, 95% CI [1.18, 1.51], p 〈 .01). Furthermore, LBC had significantly higher severity in medical neglect ( SMD = 0.31, 95% CI [0.27, 0.35], p 〈 .01), emotional neglect ( SMD = 0.28, 95% CI [0.24, 0.32], p 〈 .01), physical neglect ( SMD = 0.24, 95% CI [0.18, 0.29], p 〈 .01), security neglect ( SMD = 0.26, 95% CI [0.23, 0.29], p 〈 .01), educational neglect ( SMD = 0.25, 95% CI [0.20, 0.31], p 〈 .01), and social neglect ( SMD = 0.25, 95% CI [0.10, 0.40], p 〈 .01). Conclusion: The neglect rates and severity in LBC in China were both significantly higher than those in NLBC. There was a strong association between neglect and LBC. Public policy changes are urgently needed to improve the dire situation and the well-being of the LBC.
    Type of Medium: Online Resource
    ISSN: 1524-8380 , 1552-8324
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2070884-1
    SSG: 5,2
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  • 4
    In: Applied Spectroscopy, SAGE Publications, Vol. 72, No. 5 ( 2018-05), p. 706-714
    Abstract: Primary pancreatic α, β, δ, and pancreatic polypeptide (PP) cells are reliable cell models for diabetes research. However, the separation and purification of these cells in living conditions remains an obstacle for researchers. The interaction of visible light with cellular molecules can produce Raman scattering, which can be analyzed to obtain cellular intrinsic molecular fingerprints. It has been speculated that primary pancreatic α, β, δ, and PP cells can be identified and separated from each other according to their spectral differences. To test this hypothesis, Raman spectra detection was performed on rat islet cells. Single islet cells identified by Raman scattering under living conditions were verified using immunohistochemistry. Thus, Raman data were acquired from a pure line of islet cells as a training sample and then used to establish the discriminant function. Then, using the principal component analysis–linear discriminate analysis (PCA-LDA) method, the four types of islet cells could be identified and discriminated by Raman spectroscopy. This study provides a label-free and noninvasive method for discriminating islet cell types in a randomly distributed mixed islet cell population via their physical properties rather than by using antibodies or fluorescence labeling.
    Type of Medium: Online Resource
    ISSN: 0003-7028 , 1943-3530
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 1474251-2
    SSG: 11
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  • 5
    Online Resource
    Online Resource
    SAGE Publications ; 2022
    In:  Therapeutic Advances in Gastroenterology Vol. 15 ( 2022-01), p. 175628482210982-
    In: Therapeutic Advances in Gastroenterology, SAGE Publications, Vol. 15 ( 2022-01), p. 175628482210982-
    Abstract: Liver cirrhosis is a major global health burden worldwide due to its high risk of morbidity and mortality. Role of terlipressin for the management of liver cirrhosis–related complications has been recognized during recent years. This article aims to develop evidence-based clinical practice guidance on the use of terlipressin for liver cirrhosis–related complications. Methods: Hepatobiliary Study Group of the Chinese Society of Gastroenterology of the Chinese Medical Association and Hepatology Committee of the Chinese Research Hospital Association have invited gastroenterologists, hepatologists, infectious disease specialists, surgeons, and clinical pharmacists to formulate the clinical practice guidance based on comprehensive literature review and experts’ clinical experiences. Results: Overall, 10 major guidance statements regarding efficacy and safety of terlipressin in liver cirrhosis were proposed. Terlipressin can be beneficial for the management of cirrhotic patients with acute variceal bleeding and hepatorenal syndrome (HRS). However, the evidence regarding the use of terlipressin in cirrhotic patients with ascites, post-paracentesis circulatory dysfunction, and bacterial infections and in those undergoing hepatic resection and liver transplantation remains insufficient. Terlipressin-related adverse events, mainly including gastrointestinal symptoms, electrolyte disturbance, and cardiovascular and respiratory adverse events, should be closely monitored. Conclusion: The current clinical practice guidance supports the use of terlipressin for gastroesophageal variceal bleeding and HRS in liver cirrhosis. High-quality studies are needed to further clarify its potential effects in other liver cirrhosis–related complications.
    Type of Medium: Online Resource
    ISSN: 1756-2848 , 1756-2848
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2440710-0
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  • 6
    Online Resource
    Online Resource
    SAGE Publications ; 2023
    In:  The Cleft Palate Craniofacial Journal Vol. 60, No. 11 ( 2023-11), p. 1462-1473
    In: The Cleft Palate Craniofacial Journal, SAGE Publications, Vol. 60, No. 11 ( 2023-11), p. 1462-1473
    Abstract: In the previous study, we identified bone morphogenetic protein 4 (BMP4) responsible for non-syndromic cleft lip with or without cleft palate (NSCL/P). We aimed to elucidate the effects and mechanisms of BMP4 on epithelial–mesenchymal transition (EMT) through Smad1 signaling pathway to be involved in NSCL/P. Methods The human oral epidermoid carcinoma cells (KBs) were transfected with plasmids or small interfering RNA (siRNA) to build the models. The migration of the cells was evaluated by transwell assay. Western blotting and quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR) were used to detect the expressions of BMP4, E-cadherin, N-cadherin, EMT-related transcription factors snal1 and snal2, matrix metalloproteinase 2 (MMP2), MMP9, Smad1, and phosphorylated Smad1. Results In the overexpression group, the migration number of cells was increased significantly. The protein expression of E-cadherin was decreased significantly, while the protein expression level of the N-cadherin was increased significantly. The protein and mRNA expressions of MMP2, MMP9, snal1, and snal2 were significantly higher. The expression level of Smad1 was not significantly changed, while the phosphorylation of Smad1 was significantly increased. In the BMP4-siRNA group, the migrating number cells was significantly decreased. The protein expression of E-cadherin was increased significantly, while the expression of N-cadherin was significantly decreased. The protein and mRNA expressions of MMP2, MMP9, snal1, and snal2 were significantly lower than that of the control group. The expressions of Smad1 and phosphorylation of Smad1 were not significantly changed. Conclusions BMP4 enhances cell migration and promotes cell EMT through Smad1 signaling pathway. Abnormal BMP4 mediates migration and EMT through other relevant signaling pathways resulting in NSCL/P. The study provides new insight into the mechanisms of NSCL/P associated with BMP4.n
    Type of Medium: Online Resource
    ISSN: 1055-6656 , 1545-1569
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2030056-6
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  • 7
    Online Resource
    Online Resource
    SAGE Publications ; 2021
    In:  Clinical and Applied Thrombosis/Hemostasis Vol. 27 ( 2021-01), p. 107602962110401-
    In: Clinical and Applied Thrombosis/Hemostasis, SAGE Publications, Vol. 27 ( 2021-01), p. 107602962110401-
    Abstract: Objective: We tried to find the relationship between statin and diabetes retinopathy (DR) in patients with type 2 diabetes mellitus (T2DM). Methods: We searched the databases of PubMed, EMBASE, and the Cochrane Library for eligible studies reporting on the relationships between statin use and DR, from inception to September 25, 2020. The terms searched including Diabetes Mellitus, Type 2, Hydroxymethylglutaryl-CoA Reductase Inhibitors, and Diabetic Retinopathy. We expressed the results as the odds ratios (ORs) with 95% confidence intervals (CIs) which were calculated using a random-effects model. Results: A total of 6 eligible studies, including 43 826 patients, were included in the meta-analysis. The meta-analysis showed that statin was not associated with elevated risk of DR [OR = 0.96 (95% CI: 0.80-1.16), P = .68] . Similarly, no differences were found between statin and placebo in participants ≥500 [OR = 0.98 (95% CI: 0.80-1.21)] or participants 〈 500 [OR = 0.90 (95% CI: 0.49-1.66)]. Further, we conducted a meta-analysis to study the effect of statin therapy on DR in people with type 2 diabetes according to age and found that statin use was associated with a decreased risk of DR in patients with type 2 diabetes 40 years of age or older [OR = 0.87 (95% CI: 0.82-0.92)] . Conclusion: Our meta-analysis revealed that statin was not associated with elevated risk of DR in patients with T2DM. Moreover, statin use was associated with a lower incidence of DR in patients with type 2 diabetes 40 years of age or older.
    Type of Medium: Online Resource
    ISSN: 1076-0296 , 1938-2723
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2230591-9
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  • 8
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Journal of Orthopaedic Surgery Vol. 24, No. 2 ( 2016-08), p. 183-187
    In: Journal of Orthopaedic Surgery, SAGE Publications, Vol. 24, No. 2 ( 2016-08), p. 183-187
    Abstract: To compare the analgesic effect of preoperative ropivacaine with or without tramadol for femoral nerve block in total knee arthroplasty (TKA). Methods 14 men and 46 women aged 59 to 80 years who were American Society of Anesthesiologists (ASA) grade I or II and were scheduled for TKA were randomised to receive preoperative femoral nerve block with 20 ml of 0.375% ropivacaine plus tramadol 0 mg (n=15), 50 mg (n=15), or 100 mg (n=15), or no preoperative femoral nerve block (control) [n=15]. Femoral nerve block was performed by a single anaesthesiologist before the standardised combined spinal epidural anaesthesia. Postoperatively, patient-controlled analgesia was given. The visual analogue score (VAS) for pain at rest and on movement was recorded at 8, 12, 24, 48, and 72 hours. Passive knee range of motion (ROM) was measured at 24, 48, and 72 hours. Results The 4 groups were comparable in terms of age, gender, weight, ASA grade, and operating time. Compared with patients who received no femoral nerve block or ropivacaine alone, those who received femoral nerve block with 20 ml of 0.375% ropivacaine plus tramadol 50 mg or 100 mg recorded a lower VAS for pain at rest and on movement at 8 to 72 hours, longer sensory and motor block time, and lower demand, delivery, and total amount of patient-controlled analgesia. The passive knee ROM at 24 to 72 hours was greater in patients with femoral nerve block than in those without. Conclusion Preoperative femoral nerve block with 20 ml of 0.375% ropivacaine and 100 mg tramadol resulted in the best analgesic effect.
    Type of Medium: Online Resource
    ISSN: 2309-4990 , 2309-4990
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2128854-9
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  • 9
    Online Resource
    Online Resource
    SAGE Publications ; 2019
    In:  Acupuncture in Medicine Vol. 37, No. 1 ( 2019-02), p. 72-76
    In: Acupuncture in Medicine, SAGE Publications, Vol. 37, No. 1 ( 2019-02), p. 72-76
    Abstract: There are multiple treatment options for hiccups, including non-pharmacological therapies, but little evidence of superiority of one treatment over another. The aim of this study was to investigate the effects of acupuncture on persistent hiccups after arthroplasty. Methods: From April 2010 to December 2015, 15 patients with primary unilateral total hip/knee arthroplasty were diagnosed with persistent hiccups and given acupuncture at PC6, CV12 and ST36. Each acupuncture session lasted 30 min. The total number of treatment sessions was determined by the persistence of symptoms, but acupuncture was administered no more than three times over the course of a week. The hiccups assessment instrument (HAI) was used to assess the severity of hiccups pre-treatment and post-treatment. Adverse events were also recorded. Results: Absolute resolution was observed in all 15 patients after less than three acupuncture sessions. Of these, 10 patients required only one acupuncture session, 3 patients required two sessions and 2 patients required three sessions. The HAI score improved after each round of acupuncture treatment (P 〈 0.05). The average HAI score improved significantly post-acupuncture compared to baseline values pre-treatment (P 〈 0.05). Symptoms accompanying the hiccups included pain in the diaphragmatic area (five patients), mild dyspnoea (three patients), dysphagia (two patients) and nausea/vomiting (one patient). All these accompanying symptoms disappeared at the point of resolution of the hiccups. There were no adverse effects related to acupuncture during the study period. Conclusion: Based on our results, acupuncture may represent a potential treatment option for hiccups after arthroplasty. Caution must be exercised, however, given the lack of a control group. Accordingly, randomised controlled trials will be required to verify the efficacy and effectiveness of acupuncture for the treatment of hiccups.
    Type of Medium: Online Resource
    ISSN: 0964-5284 , 1759-9873
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2126127-1
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  • 10
    In: American Journal of Rhinology & Allergy, SAGE Publications, Vol. 30, No. 2 ( 2016-03), p. 143-148
    Abstract: Functional endoscopic sinus surgery (FESS) is considered to be the standard procedure for chronic rhinosinusitis with nasal polyps (CRSwNP). However, for CRSwNP that accompanies asthma, the results are not satisfying. Extensive endoscopic sinus surgery (EESS) aimed at reducing the inflammatory load has been indicated as a viable option for refractory chronic rhinosinusitis. Objective To evaluate the clinical outcomes and safety of EESS (middle turbinate and superior turbinate resection and total ethmoidectomy) for patients with CRSwNP and with asthma. Methods This was a prospective, single-institute cohort study conducted in a tertiary teaching hospital. Patients with CRSwNP and with asthma who were proceeding to surgery were enrolled. There were 23 patients in the EESS group and 24 patients in the FESS group. The preoperative disease severity was evaluated by the visual analog scale (VAS), Lund-Kennedy (L-K) endoscopy score, computed tomography Lund-Mackay score, asthma control test (ACT), and pulmonary function test. Clinical outcomes were comparatively evaluated between the two groups after a 1-year follow-up by using the VAS score, the postoperative endoscopic score (E score), L-K score, ACT score, and pulmonary function test. Results The disease severity (general VAS score, endoscopic L-K score, computed tomography score, ACT score) showed no significant differences between the two groups before surgery (p 〉 0.05). One year after surgery, both groups achieved significant improvement in the VAS score and endoscopic L-K score. The EESS group showed better improvement in the olfactory VAS score and E score compared with the FESS group (mean [standard deviation] change of olfactory VAS, 6.00 ∓ 3.67 versus 3.30 ∓ 3.44, p = 0.015; mean [standard deviation] E score, 0.31 ∓ 0.18 versus 0.66 ∓ 0.26, p 〈 0.001). No significant differences were found in the change of general nasal symptom VAS score, other individual VAS scores (nasal congestion, discharge, headache and/or facial pain), L-K score, ACT score, and pulmonary function between the two groups (p 〉 0.05). Conclusion EESS for patients with CRSwNP and with asthma may help to improve the subjective olfaction and endoscopic appearance.
    Type of Medium: Online Resource
    ISSN: 1945-8924 , 1945-8932
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2554548-6
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