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A compact analytical approximation for a light sterile neutrino oscillation in matter

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Chinese Physics C 2020年第10期44卷 1-18页

作者： Bao-Biao Yue Wei Li jia-jie ling Fan-Rong Xu School of Physics Sun Yat-sen UniversityNo.135Xingang Xi RoadGuangzhou 510275China Department of physics Jinan UniversityNo.601Huang Pu RoadGuangzhou 510632China Department of Physics and Astronomy National Taiwan UniversityNo.1Sec.4Roosevelt RoadTaipei 10617China

The existence of light sterile neutrinos is a long-standing question in particle *** experimental“anomalies”might be explained by introducing eV mass scaled light sterile *** experiments are actively searching for such light sterile neutrinos through neutrino *** long baseline experiments,the matter effect should be treated carefully for precise calculation of the neutrino oscillation ***,this is usually time-consuming or analytically *** this manuscript,we adopt a Jacobi-like method to diagonalize the Hermitian Hamiltonian matrix and derive analytically simplified neutrino oscillation probabilities for 3(active)+1(sterile)-neutrino mixing for a constant matter *** approximations can reach a considerably high numerical accuracy while retaining their analytical simplicity and fast computing *** would be useful for current and future long baseline neutrino oscillation experiments.

关键词： neutrino oscillation sterile neutrinos MSW

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

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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

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红外隐身防护材料研究进展

包装工程 2023年第9期44卷 137-146页

作者：许毅辉贾凌杰贾贤补陈尔余武警士官学校杭州310000

目的综述近年来国内外先进的红外隐身防护材料技术的研究进展,并对红外隐身材料的未来进行展望。方法从红外探测技术与红外隐身原理出发,着重介绍低发射率材料、控温材料、新型智能红外隐身材料以及协同复合材料等一系列有优异性能的材... 详细信息

目的综述近年来国内外先进的红外隐身防护材料技术的研究进展,并对红外隐身材料的未来进行展望。方法从红外探测技术与红外隐身原理出发,着重介绍低发射率材料、控温材料、新型智能红外隐身材料以及协同复合材料等一系列有优异性能的材料。结果红外隐身可通过降低物体表面温度及降低物体表面辐射率来实现,依据这两方面原理研制的红外隐身防护材料具有良好的隐身效果。结论不同种类的红外隐身材料具有不同的特点,已广泛运用于军事装备、织物等方面,但依然存在一些不足,未来要针对不同应用环境要求进一步优化,以期满足现代化战争需求。

关键词：红外隐身低发射率材料控温材料复合材料

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miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu Xiao-Li Li Xiao-Ting Sun Li-Ting Wang Xia Wu ling-jie Zhu Xiao-jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Pretreatment red blood cell distribution width as a predictive marker for postoperative complications after laparoscopic pancreatoduodenectomy

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 143-157页

作者： Xian-Rang Cao Yin-Long Xu jia-Wei Chai Kai Zheng Jun-jie Kong Jun Liu Shun-Zhen Zheng Department of Liver Transplantation and Hepatobiliary Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021Shandong ProvinceChina Department of Breast and Thyroid Surgery Shandong Provincial Maternal and Child Health Care HospitalJinan 250014Shandong ProvinceChina

BACKGROUND Red blood cell distribution width(RDW)is associated with the development and progression of various *** To explore the association between pretreatment RDW and short-term outcomes after laparoscopic pancreatoduodenectomy(LPD).METHODS A total of 804 consecutive patients who underwent LPD at our hospital between March 2017 and November 2021 were retrospectively *** between pretreatment RDW and clinicopathological characteristics and short-term outcomes were *** Patients with higher pretreatment RDW were older,had higher Eastern Cooperative Oncology Group scores and were associated with poorer short-term outcomes than those with normal *** pretreatment RDW was an independent risk factor for postoperative complications(POCs)(hazard ratio=2.973,95%confidence interval:2.032-4.350,P<0.001)and severe POCs of grade IIIa or higher(hazard ratio=3.138,95%confidence interval:2.042-4.824,P<0.001)based on the Clavien-Dino classification *** analysis showed that high pretreatment RDW was an independent risk factor for Clavien-Dino classi-fication grade IIIb or higher POCs,a comprehensive complication index score≥26.2,severe postoperative pancreatic fistula,severe bile leakage and severe *** pretreatment RDW was positively associated with the neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio and was negatively associated with albumin and the prognostic nutritional *** Pretreatment RDW was a special parameter for patients who underwent *** was associated with malnutrition,severe inflammatory status and poorer short-term *** could be a surrogate marker for nutritional and inflammatory status in identifying patients who were at high risk of developing POCs after LPD.

关键词： Biomarker Laparoscopic pancreatoduodenectomy Postoperative complication Red blood cell distribution width Short-term outcomes

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脑卒中全周期康复的思考与策略

中国全科医学 2025年第2期28卷 129-134页

作者：贾杰复旦大学附属华山医院康复医学科上海市200040 福建医科大学附属第一医院福建省福州市350004 国家老年疾病临床医学研究中心(华山) 上海市200040 国家神经疾病医学中心上海市200040 国家区域医疗中心福建省福州市350000

脑卒中后患者常会遗留不同程度功能障碍,从医疗机构返回至社区家庭过程中,需要各级医疗机构配合互动、上下转介,形成良好的全周期康复闭环。目前,脑卒中全周期康复的落地应用正逐步推进,但仍存在一些阻力。本文以脑卒中全周期康复理念... 详细信息

脑卒中后患者常会遗留不同程度功能障碍,从医疗机构返回至社区家庭过程中,需要各级医疗机构配合互动、上下转介,形成良好的全周期康复闭环。目前,脑卒中全周期康复的落地应用正逐步推进,但仍存在一些阻力。本文以脑卒中全周期康复理念为基础,结合脑卒中社区康复发展现状,思考脑卒中全周期康复-社区康复环节的发展,强调“社区拐点康复”的重要意义以及基层社区康复标准建立的必要性,重视脑卒中患者康复的全周期阶段,探讨社区基层康复的发展策略,切实提高脑卒中患者社区及家庭生存质量。

关键词：脑卒中全周期康复社区康复康复标准

Association of stent thrombectomy and conventional treatment with neuroprotection, complications, anxiety, and depression in acute ischemic stroke patients

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World Journal of Psychiatry 2025年第1期15卷 72-82页

作者： Kai-jie Yang jia-jian Huang Cai-Xia Xuan Department of Neurology Qinzhou Second People's HospitalQinzhou 535000Guangxi Zhuang Autonomous RegionChina

BACKGROUND Acute ischemic stroke(AIS)is an abrupt blood flow cessation to a specific brain region within a vascular zone,causing a subsequent decline in neurological *** thrombectomy is a recently established technique for treating *** provides the benefits of being a relatively simple and safe procedure,capable of partially enhancing a patient’s ***,some patients may experience endothelial damage and recurrent thrombosis,with clinical outcomes that are not always ***,the efficacy of this method remains *** To survey the association of stent thrombectomy vs standard treatment with neurological function protection,complications,and short-term prognosis in patients diagnosed with *** This study assigned 90 patients with AIS to the observation and control groups(n=45 patients)from December 2020 to December *** thrombectomy was conducted in the observation group,whereas routine treatment was provided to the control *** study assessed the therapeutic outcomes of two groups,including a comparison of their neurological function,living ability,anxiety and depression status,plaque area,serum inflammatory factors,serum Smur100βprotein,neuron-specific enolase(NSE),homocysteine(Hcy),and vascular endo-thelial ***,the incidence of complications was calculated and analyzed for each *** The total effective rate of treatment was 77.78%and 95.56%in the control and observation groups,*** 8 weeks of treatment,the scores on the National Institutes of Health Stroke Scale,Hamilton Anxiety Scale,and Hamilton Depression Scale decreased remarkably;the Barthel index increased remarkably,with better improvement effects of the scores in the observation group(P<0.05);total cholesterol,triglyceride,C-reactive protein,and plaque area lessened remarkably,with fewer patients in the observation group(P<0.05);S-100βprotein,NSE,and Hcy levels lessened remarkably,with fewer patients in

关键词： Stent thrombectomy Acute ischemic stroke Neurological function Complications Short-term prognosis

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脐动脉血气异常相关危险因素的病例对照研究

泰山医学院学报 2017年第7期38卷 721-724页

作者：邱佳琳魏洁玲广州市海珠区妇幼保健院妇产科广东广州510000

目的探讨脐动脉血气异常的相关危险因素。方法本研究采用病例对照研究设计,以270例脐动脉血pH值40)、胎儿娩出方式(经阴道分娩)、羊水性质(Ⅲ度)、胎儿窘迫以及产程时间长是引起新生儿脐动脉血气异常的重要危险因素。

关键词：新生儿脐动脉血气分析病例对照研究危险因素

Social function scores and influencing factors in patients with residual depressive symptoms

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World Journal of Psychiatry 2025年第1期15卷 117-127页

作者： Zong-ling Liao Xiao-Li Pu Zhi-Yi Zheng jie Luo Department 1 of Psychiatry Gele Mountain Hospital of Chongqing Mental Health CenterChongqing 400030China Department of Psychology Chongqing Jiangjin District Psychiatric HospitalChongqing 402260China Department of Psychiatry Chongqing Third Social Welfare InstituteChongqing 400036China Women and Children’s Mental Health Center Affiliated Hospital of Chongqing Population and Family Planning Research InstituteChongqing 400020China

BACKGROUND At present,the influencing factors of social function in patients with residual depressive symptoms are still *** depressive symptoms are highly harmful,leading to low mood in patients,affecting work and interpersonal communication,increasing the risk of recurrence,and adding to the burden on *** the influencing factors of their social function is of great *** To explore the social function score and its influencing factors in patients with residual depressive *** This observational study surveyed patients with residual depressive symptoms(case group)and healthy patients undergoing physical examinations(control group).Participants were admitted between January 2022 and December *** functioning was assessed using the Sheehan Disability Scale(SDS),and scores were compared between *** influencing SDS scores in patients with residual depressive symptoms were analyzed by applying multiple linear regression while using the receiver operating characteristic curve,and these RESULTS The SDS scores of the 158 patients with depressive symptoms were 11.48±*** with the control group,the SDS scores and all items in the case group were *** scores were higher in patients with relapse,discon-tinuous medication,drug therapy alone,severe somatic symptoms,obvious residual symptoms,and anxiety scores≥*** history,medication compliance,therapy method,and residual symptoms correlated positively with SDS scores(r=0.354,0.414,0.602,and 0.456,respectively).Independent influencing factors included disease history,medication compliance,therapy method,somatic symptoms,residual symptoms,and anxiety scores(P<0.05).The areas under the curve for predicting social functional impairment using these factors were 0.713,0.559,0.684,0.729,0.668,and 0.628,respectively,with sensitivities of 79.2%,61.8%,76.8%,81.7%,63.6%,and 65.5%and specificities of 83.3%,87.5%,82.6%,83.3%,86.7%,and 92.1%,respectively.C

关键词： Depressive Residual symptoms Social function Influence factors