检索结果-南通市图书馆

Prevalence of amblyopia in congenital blepharoptosis: a systematic review and Meta-analysis

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2019年第7期12卷 1187-1193页

作者： jia-ying zhang Xiao-Wei Zhu Xia Ding Ming Lin Jin Li Department of Ophthalmology Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200011China Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology Shanghai 200011China

AIM: To conduct a systematic review and Meta-analysis of the published literature to evaluate the pooled prevalence rate of amblyopia in patients with congenital ***: We searched the PubMed, Embase, the Cochrane Central Register of Controlled Trials, China National Knowledge Infrastructure, Wanfang Data, and Chongqing VIP databases for studies reporting the prevalence of amblyopia in patients with congenital ptosis. The reference lists of relevant studies were scanned. Heterogeneity of effect sizes across studies was tested. We calculated prevalence ratios to compare prevalence estimates for different causes of amblyopia in patients with congenital ptosis, as well as for different geographical regions, year of publication and sample size in subgroup analyses. A systematic review and Meta-analysis were ***: We identified 29 eligible surveys with a total population of 2436. Prevalence rates of amblyopia ranged from 13.8% to 69%. We noted substantial heterogeneity in prevalence estimates for amblyopia in congenital ptosis(Cochran’s χ2 significant at P<0.0001; I2=90%). The pooled prevalence using random-effects models of 29 studies was 32.8%(95%CI: 27.3%-38.4%) in the overall population. Compared to the overall pooled prevalence, amblyopia prevalence was higher in studies in which only subjects with blepharophimosis syndrome were ***: We confirm that nearly one-third of congenital ptosis patients are suffering from or at risk for amblyopia. Patients with blepharophimosis syndrome are more likely to develop amblyopia. The identificationand management of amblyopia should be integral to the treatment of congenital ptosis.

关键词： amblyopia congenital ptosis blepharophimosis systematic review

Comparing gastrointestinal dysfunction score and acute gastrointestinal injury grade for predicting short-term mortality in critically ill patients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第42期30卷 4523-4531页

作者： Chao Shen Xi Wang Yi-ying Xiao jia-ying zhang Guo-Lian Xia Rong-Lin jiang Intensive Care Unit The First Affiliated Hospital of Zhejiang Chinese Medical University(Zhejiang Provincial Hospital of Traditional Chinese Medicine)Hangzhou 310006Zhejiang ProvinceChina

BACKGROUND The prognosis of critically ill patients is closely linked to their gastrointestinal(GI)*** acute GI injury(AGI)grading system,established in 2012,is extensively utilized to evaluate GI dysfunction and forecast outcomes in clinical *** 2021,the GI dysfunction score(GIDS)was developed,building on the AGI grading system,to enhance the accuracy of GI dysfunction severity assessment,improve prognostic predictions,reduce subjectivity,and increase *** To compare the predictive capabilities of GIDS and the AGI grading system for 28-day mortality in critically ill *** A retrospective study was conducted at the general intensive care unit(ICU)of a regional university *** data were collected during the first week of ICU *** primary outcome was 28-day *** logistic regression analyzed whether GIDS and AGI grade were independent risk factors for 28-day *** predictive abilities of GIDS and AGI grade were compared using the receiver operating characteristic curve,with DeLong’s test assessing differences between the curves’*** The incidence of AGI in the first week of ICU admission was 92.13%.There were 85 deaths(47.75%)within 28 days of ICU *** was no initial 24-hour difference in GIDS between the non-survival and survival *** GIDS(OR 2.01,95%CI:1.25-3.24;P=0.004)and AGI grade(OR 1.94,95%CI:1.12-3.38;P=0.019)were independent predictors of 28-day *** significant difference was found between the predictive accuracy of GIDS and AGI grade for 28-day mortality during the first week of ICU admission(Z=-0.26,P=0.794).CONCLUSION GIDS within the first 24 hours was an unreliable predictor of 28-day *** predictive accuracy for 28-day mortality from both systems during the first week was comparable.

关键词： Critical illness Gastrointestinal dysfunction Acute gastrointestinal injury Prognostic indicators Intensive care unit outcomes Mortality prediction Risk stratification Predictive modeling

Dynamic Response of Warship Structure under Air Non-contact Explosion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Shanghai jiaotong university(Science) 2010年第6期15卷 743-748页

作者：王佳颖张世联 School of Naval Architecture Ocean and Civil EngineeringShanghai Jiaotong University

The ship hull is simplified as a free beam with varying sections. Based on hydroelasticity and explosion mechanics theory,mechanical model and kinetic equation for hull girder vibration under non-contact explosion are established. The equation is solved by Wilson-θ algorithm. On the basis of the above principles,a structure kinetics analysis program is compiled. The dynamic response of supposed warship under air explosion is calculated conveniently and quickly. Under the explosion condition designed in the paper,the positive pressure period of non-contact explosion wave is much less than the natural periods of the first four modes of hull girder and the resonance of ship girder overall vibration can be avoided. The ratio of midship maximum moment to ultimate bearing strength under non-contact explosion accelerates with the increment of impact factor.

关键词： non-contact explosion kinetic equation Wilson-θ algorithm additional shear and moment due to explosion

Intervertebral disc degeneration and bone density in degenerative lumbar scoliosis： a comparative study between patients with degenerative lumbar scoliosis and patients with lumbar stenosis

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2011年第23期124卷 3875-3878页

作者： DING Wen-yuan YANG Da-long CAO Lai-zhen SUN Ya-peng zhang Wei XU jia-xin zhang ying-ze SHEN Yong Department of Spine Surgery Third Hospital of Hebei Medical University Shiiiazhuang. Hebei 050051China

Degenerative lumbar scoliosis is common in older patients. Decreased bone density and the degeneration of intervertebral discs are considered to be correlated with degenerative lumbar scoliosis. A means of quantifying the retative signal intensity for degenerative disc disease has not been previously discussed. The purpose of this study was to compare bone mineral density and intervertebral disc degeneration between degenerative lumbar scoliosis and lumbar spinal stenosis patients in a nine-year retrospective study. Methods From January 2001 to August 2010, 96 patients with degenerative lumbar scoliosis were retrospectively enrolled and 96 patients with lumbar spinal stenosis were selected as controls. Cobb angle, height of the apical disc and the contiguous disc superiorly and inferiorly on convex and concave sides, the height of the convex and concave side of the apical and the contiguous vertebral body superiorly and inferiorly were measured in the scoliosis group. The height of L2/L3, L3/L4, L4/L5 discs and the height of L2/L4 vertebral body was measured in the control group. The grade of intervertebral disc degeneration was evaluated using T2Wl sagittal images in both groups. The bone density of lumbar vertebrae was measured with dual-energy X-ray. Results In scoliosis group, the intervertebral disc height on the convex side was greater than the height on the concave side （P 〈0.001）. The vertebral body height on the convex side was greater than the height on the concave side （P=0.016） There was a significant difference between the scoliosis group and the control group （P=0.003）, and between T-value and the rate of osteoporosis between the two groups （both P 〈0.001）. Results were verified using multiple linear regression analysis. Conclusions Degenerative lumbar scoliosis is accompanied by height asymmetry between the intervertebral disc and vertebral body regarding the convex and concave surfaces. There is a positive correlation between the angle of scoliosis a

关键词： degenerative scoliosis osteoporosis intervertebral disc lumbar degeneration

Full retroauricular skin and fascia expansion in microtia reconstruction:a single center experience of 166 cases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plastic and Aesthetic Research 2016年第1期3卷 364-367页

作者： Ji-Hua Wang Ting Tang Yong-Jing He ying-jia zhang Yun Yang Department of Plastic Surgery the Second Affiliated Hospital of Kunming Medical UniversityKunming 650101YunnanChina

Aim:Ear reconstruction is a challenge for plastic and reconstructive *** ear requires sufficient skin coverage and a three-dimensional(3D)cartilage *** this paper,the authors present their 10-year experience in microtia reconstruction using tissue expansion and an autogenous rib cartilage ***:Ear reconstruction was performed in 3 operative *** the first procedure,a 50-80 mL kidney or cylinder-shaped expander was implanted deep to the subcutaneous fascia of the retroauricular mastoid *** a period of 3-5 months,the expander was filled to a final volume of 80-110 *** the next operation,the retroauricular fascia was eliminated or reserved following expander removal,and the autogenous costal cartilage framework was placed below the expanded skin *** the third and final stage,the earlobe transposition,tragus construction and conchal deepening were ***:A total of 165 patients(166 ears)were reconstructed using tissue expansion and an autogenous rib cartilage *** included hematomas in 3 cases,expander exposure in 8 cases,cartilage exposure in 6 cases,infection and cartilage resorption in 2 cases,exposure of steel wire in 4 cases,and aseptic seroma in 2 ***-up ranging from 3 months to 5 years showed that 159 patients were satisfied with the reconstructed ear including size,location,projection,convolution,skin-colour matching,symmetry with opposite ***:Expansion of the retroauricular skin and fascia can provide sufficient non-hair-bearing skin and tissue for coverage of a three-dimensional costal cartilage *** and prompt treatment of complications are advised in order to obtain a satisfactory reconstruction of the ear.

关键词： Microtia expansion autogenous costal cartilage ear reconstruction

Viscosity and structure relationship with equimolar substitution of CaO with MgO in the CaO–MgO–Al_(2)O_(3)–SiO_(2)slag melts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 70-79页

作者： Yong Hou Shuo zhang Jie Dang jia Guo Hanghang Zhou Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

Currently,the Al_(2)O_(3)content in the high-alumina slag systems within blast furnaces is generally limited to 16wt%–18.5wt%,making it challenging to overcome this *** most studies that concentrated on managing the MgO/Al_(2)O_(3)ratio or basicity,this paper explored the effect of equimolar substitution of MgO for CaO on the viscosity and structure of a high-alumina CaO-MgO-Al_(2)O_(3)-SiO_(2)slag system,providing theoretical guidance and data to facilitate the application of high-alumina *** results revealed that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol%MgO *** transform infrared spectroscopy(FTIR)results found that the depths of the troughs representing[SiO_(4)]tetrahedra,[AlO_(4)]tetrahedra,and Si-O-Al bending became progressively deeper with increased MgO *** of the Raman spectra showed that the average number of bridging oxygens per Si atom and the X_(Q^(3))/X_(Q^(2))(X_(Q^(i))is the molar fraction of Q^(i) unit,and i is the number of bridging oxygens in a[SiO_(4)]tetrahedral unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectively,indicating a progressive polymerization of the silicate structure.X-ray photoelectron spectroscopy(XPS)results highlighted that non-bridging oxygen content decreased from 77.97mol% to 63.41mol% with increasing MgO concentration,whereas bridging oxygen and free oxygen contents *** analysis demonstrated a gradual increase in the polymerization degree of the tetrahedral structure with the increase in MgO ***,bond strength is another important factor affecting the slag *** occurrence of a viscosity minimum can be attributed to the complex evolution of bond strengths of non-bridging oxygens generated during depolymerization of the[SiO_(4)]and[AlO_(4)]tetrahedral structures by CaO and MgO.

关键词： aluminosilicate viscosity structure spectroscopy

Effect of thermal exposure on microstructure and mechanical properties of Al-Si-Cu-Ni-Mg alloy produced by different casting technologies

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2020年第7期30卷 1717-1730页

作者： jia-ying zhang Li-jie ZUO jian FENG Bing YE Xiang-yang KONG Hai-yan jiaNG Wen-jiang DING National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China School of Mechanical and Ocean Engineering Jiangsu Ocean UniversityLianyungang 222005China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China Institute of Materials for Mobile Energy School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The effect of thermal exposure at 350 ℃ for 200 h on microstructure and mechanical properties was investigated for Al-Si-Cu-Ni-Mg alloy, which was produced by permanent mold casting(PMC) and high pressure die casting(HPDC). The SEM and IPP software were used to characterize the morphology of Si phase in the studied alloys. The results show that the thermal exposure provokes spheroidization and coarsening of eutectic Si particles. The ultimate tensile strength of the HPDC alloy after thermal exposure is higher than that of the PMC alloy at room temperature. However, the TEPMC and TEHPDC alloys have similar tensile strength around 67 MPa at 350 ℃. Due to the coarsening of eutectic Si, the TEPMC alloy exhibits better creep resistance than the TEHPDC alloy under studied creep conditions. Therefore, the alloys with small size of eutectic Si are not suitably used at 350 ℃.

关键词： Al-Si-Cu-Ni-Mg alloy thermal exposure coarsening creep behavior

Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili zhang Yuefeng Yan Zhen Wang Guansheng Ma Dechang jia Xiaoxiao Huang Yu Zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 2038-2052页

作者： Zhihao Lin Changzhou ying Xiaoli Si Naijia Xue Yi Liu Ran Zheng ying Chen jiali Pu Baorong zhang Department of Neurology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra ***,a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation,plays a vital role in the death of dopaminergic ***,the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely *** oxidase 4 is related to oxidative stress,however,whether it regulates dopaminergic neuronal ferroptosis remains *** aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis,and if so,by what *** found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced Parkinson's disease *** oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic ***,NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model ***,we found that NADPH oxidase 4 interacted with activated protein kinase Cαto prevent ferroptosis of dopaminergic ***,by lowering the astrocytic lipocalin-2 expression,NADPH oxidase 4 inhibition reduced 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced *** findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation,which contribute to dopaminergic neuron death,suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease